/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-RepeatedSemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/fork_loop_noop.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-0e22065b97d0a1f8b3904e080cebe0f05e88d2b7-0e22065 [2021-06-11 09:22:01,392 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-11 09:22:01,394 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-11 09:22:01,428 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-11 09:22:01,471 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-RepeatedSemanticLbe.epf [2021-06-11 09:22:01,497 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-11 09:22:01,497 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-11 09:22:01,499 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-11 09:22:01,499 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-11 09:22:01,500 INFO L138 SettingsManager]: * Use SBE=true [2021-06-11 09:22:01,500 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-11 09:22:01,500 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-11 09:22:01,500 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-11 09:22:01,500 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-11 09:22:01,500 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-11 09:22:01,501 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-11 09:22:01,501 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-11 09:22:01,501 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-11 09:22:01,501 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-11 09:22:01,501 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-11 09:22:01,501 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-11 09:22:01,501 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-11 09:22:01,501 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-11 09:22:01,501 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-11 09:22:01,501 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-11 09:22:01,502 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-11 09:22:01,502 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-11 09:22:01,502 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-11 09:22:01,502 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-11 09:22:01,502 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-11 09:22:01,502 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-11 09:22:01,502 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-11 09:22:01,502 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-11 09:22:01,502 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-06-11 09:22:01,502 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-11 09:22:01,739 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-11 09:22:01,752 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-11 09:22:01,753 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-11 09:22:01,754 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-11 09:22:01,755 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-11 09:22:01,755 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/fork_loop_noop.bpl [2021-06-11 09:22:01,755 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/fork_loop_noop.bpl' [2021-06-11 09:22:01,781 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-11 09:22:01,783 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-11 09:22:01,783 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-11 09:22:01,783 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-11 09:22:01,783 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-11 09:22:01,792 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 11.06 09:22:01" (1/1) ... [2021-06-11 09:22:01,797 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 11.06 09:22:01" (1/1) ... [2021-06-11 09:22:01,801 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-11 09:22:01,802 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-11 09:22:01,802 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-11 09:22:01,802 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-11 09:22:01,808 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "fork_loop_noop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 09:22:01" (1/1) ... [2021-06-11 09:22:01,808 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "fork_loop_noop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 09:22:01" (1/1) ... [2021-06-11 09:22:01,809 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "fork_loop_noop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 09:22:01" (1/1) ... [2021-06-11 09:22:01,809 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "fork_loop_noop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 09:22:01" (1/1) ... [2021-06-11 09:22:01,811 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "fork_loop_noop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 09:22:01" (1/1) ... [2021-06-11 09:22:01,812 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "fork_loop_noop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 09:22:01" (1/1) ... [2021-06-11 09:22:01,813 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "fork_loop_noop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 09:22:01" (1/1) ... [2021-06-11 09:22:01,814 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-11 09:22:01,814 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-11 09:22:01,814 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-11 09:22:01,814 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-11 09:22:01,815 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "fork_loop_noop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 09:22:01" (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 [2021-06-11 09:22:01,866 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-11 09:22:01,867 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-11 09:22:01,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-11 09:22:01,867 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread given in one single declaration [2021-06-11 09:22:01,867 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2021-06-11 09:22:01,867 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2021-06-11 09:22:01,868 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-11 09:22:01,938 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-11 09:22:01,939 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-06-11 09:22:01,939 INFO L202 PluginConnector]: Adding new model fork_loop_noop.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.06 09:22:01 BoogieIcfgContainer [2021-06-11 09:22:01,940 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-11 09:22:01,941 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-11 09:22:01,941 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-11 09:22:01,942 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-11 09:22:01,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "fork_loop_noop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 09:22:01" (1/2) ... [2021-06-11 09:22:01,943 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26097176 and model type fork_loop_noop.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.06 09:22:01, skipping insertion in model container [2021-06-11 09:22:01,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "fork_loop_noop.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.06 09:22:01" (2/2) ... [2021-06-11 09:22:01,944 INFO L111 eAbstractionObserver]: Analyzing ICFG fork_loop_noop.bpl [2021-06-11 09:22:01,948 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-11 09:22:01,950 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-06-11 09:22:01,951 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-11 09:22:01,969 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:22:01,980 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 09:22:01,994 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:22:01,994 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:22:01,994 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:22:01,995 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:22:01,995 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:22:01,995 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:22:01,995 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:22:01,995 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:22:02,000 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 11 places, 8 transitions, 21 flow [2021-06-11 09:22:02,011 INFO L129 PetriNetUnfolder]: 0/11 cut-off events. [2021-06-11 09:22:02,011 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:02,012 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. [2021-06-11 09:22:02,012 INFO L82 GeneralOperation]: Start removeDead. Operand has 11 places, 8 transitions, 21 flow [2021-06-11 09:22:02,014 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 9 places, 6 transitions, 17 flow [2021-06-11 09:22:02,015 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:02,024 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 9 places, 6 transitions, 17 flow [2021-06-11 09:22:02,027 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 9 places, 6 transitions, 17 flow [2021-06-11 09:22:02,027 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 9 places, 6 transitions, 17 flow [2021-06-11 09:22:02,029 INFO L129 PetriNetUnfolder]: 0/7 cut-off events. [2021-06-11 09:22:02,029 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:02,029 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. [2021-06-11 09:22:02,030 INFO L151 LiptonReduction]: Number of co-enabled transitions 8 [2021-06-11 09:22:02,050 INFO L163 LiptonReduction]: Checked pairs total: 2 [2021-06-11 09:22:02,060 INFO L165 LiptonReduction]: Total number of compositions: 1 [2021-06-11 09:22:02,062 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 48 [2021-06-11 09:22:02,067 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-06-11 09:22:02,067 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:02,067 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:22:02,068 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-06-11 09:22:02,068 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:22:02,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:22:02,071 INFO L82 PathProgramCache]: Analyzing trace with hash 1315, now seen corresponding path program 1 times [2021-06-11 09:22:02,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:22:02,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086620010] [2021-06-11 09:22:02,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:22:02,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:22:02,135 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:22:02,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:22:02,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:22:02,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086620010] [2021-06-11 09:22:02,145 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:22:02,145 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 09:22:02,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880003961] [2021-06-11 09:22:02,151 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:22:02,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:22:02,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:22:02,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:22:02,169 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 9 [2021-06-11 09:22:02,170 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) [2021-06-11 09:22:02,170 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:22:02,170 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 9 [2021-06-11 09:22:02,171 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:22:02,174 INFO L129 PetriNetUnfolder]: 0/4 cut-off events. [2021-06-11 09:22:02,174 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:02,175 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. [2021-06-11 09:22:02,175 INFO L132 encePairwiseOnDemand]: 7/9 looper letters, 0 selfloop transitions, 1 changer transitions 0/4 dead transitions. [2021-06-11 09:22:02,175 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 9 places, 4 transitions, 15 flow [2021-06-11 09:22:02,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:22:02,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:22:02,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 20 transitions. [2021-06-11 09:22:02,183 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7407407407407407 [2021-06-11 09:22:02,183 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 20 transitions. [2021-06-11 09:22:02,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 20 transitions. [2021-06-11 09:22:02,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:22:02,187 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 20 transitions. [2021-06-11 09:22:02,188 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) [2021-06-11 09:22:02,191 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) [2021-06-11 09:22:02,192 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) [2021-06-11 09:22:02,194 INFO L185 Difference]: Start difference. First operand has 8 places, 5 transitions, 15 flow. Second operand 3 states and 20 transitions. [2021-06-11 09:22:02,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 9 places, 4 transitions, 15 flow [2021-06-11 09:22:02,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 9 places, 4 transitions, 15 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-06-11 09:22:02,197 INFO L241 Difference]: Finished difference. Result has 9 places, 4 transitions, 15 flow [2021-06-11 09:22:02,198 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} [2021-06-11 09:22:02,199 INFO L343 CegarLoopForPetriNet]: 8 programPoint places, 1 predicate places. [2021-06-11 09:22:02,199 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:02,199 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 9 places, 4 transitions, 15 flow [2021-06-11 09:22:02,200 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 9 places, 4 transitions, 15 flow [2021-06-11 09:22:02,200 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 9 places, 4 transitions, 15 flow [2021-06-11 09:22:02,204 INFO L129 PetriNetUnfolder]: 0/4 cut-off events. [2021-06-11 09:22:02,204 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:02,204 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. [2021-06-11 09:22:02,204 INFO L151 LiptonReduction]: Number of co-enabled transitions 2 [2021-06-11 09:22:02,205 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:22:02,205 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:22:02,205 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 6 [2021-06-11 09:22:02,206 INFO L480 AbstractCegarLoop]: Abstraction has has 9 places, 4 transitions, 15 flow [2021-06-11 09:22:02,206 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) [2021-06-11 09:22:02,206 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:22:02,206 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2021-06-11 09:22:02,207 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-11 09:22:02,207 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:22:02,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:22:02,208 INFO L82 PathProgramCache]: Analyzing trace with hash 41033, now seen corresponding path program 1 times [2021-06-11 09:22:02,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:22:02,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501099544] [2021-06-11 09:22:02,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:22:02,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:22:02,215 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:22:02,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:22:02,220 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:22:02,233 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:22:02,233 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:22:02,234 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-11 09:22:02,234 WARN L342 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:22:02,235 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2021-06-11 09:22:02,243 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:22:02,243 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 09:22:02,246 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:22:02,246 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:22:02,246 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:22:02,246 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:22:02,246 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:22:02,246 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:22:02,247 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:22:02,247 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:22:02,248 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 16 places, 11 transitions, 34 flow [2021-06-11 09:22:02,252 INFO L129 PetriNetUnfolder]: 0/17 cut-off events. [2021-06-11 09:22:02,252 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:02,252 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. [2021-06-11 09:22:02,253 INFO L82 GeneralOperation]: Start removeDead. Operand has 16 places, 11 transitions, 34 flow [2021-06-11 09:22:02,253 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 14 places, 9 transitions, 30 flow [2021-06-11 09:22:02,253 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:02,253 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 14 places, 9 transitions, 30 flow [2021-06-11 09:22:02,253 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 14 places, 9 transitions, 30 flow [2021-06-11 09:22:02,254 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 14 places, 9 transitions, 30 flow [2021-06-11 09:22:02,260 INFO L129 PetriNetUnfolder]: 0/11 cut-off events. [2021-06-11 09:22:02,261 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:02,261 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. [2021-06-11 09:22:02,264 INFO L151 LiptonReduction]: Number of co-enabled transitions 28 [2021-06-11 09:22:02,330 INFO L163 LiptonReduction]: Checked pairs total: 9 [2021-06-11 09:22:02,330 INFO L165 LiptonReduction]: Total number of compositions: 2 [2021-06-11 09:22:02,330 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 77 [2021-06-11 09:22:02,331 INFO L129 PetriNetUnfolder]: 0/1 cut-off events. [2021-06-11 09:22:02,331 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:02,331 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:22:02,332 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-06-11 09:22:02,332 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:22:02,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:22:02,332 INFO L82 PathProgramCache]: Analyzing trace with hash 1699, now seen corresponding path program 1 times [2021-06-11 09:22:02,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:22:02,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670368709] [2021-06-11 09:22:02,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:22:02,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:22:02,336 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:22:02,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:22:02,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:22:02,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670368709] [2021-06-11 09:22:02,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:22:02,339 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 09:22:02,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936921804] [2021-06-11 09:22:02,340 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:22:02,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:22:02,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:22:02,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:22:02,340 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 13 [2021-06-11 09:22:02,341 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) [2021-06-11 09:22:02,341 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:22:02,341 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 13 [2021-06-11 09:22:02,341 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:22:02,342 INFO L129 PetriNetUnfolder]: 0/6 cut-off events. [2021-06-11 09:22:02,342 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:02,342 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. [2021-06-11 09:22:02,343 INFO L132 encePairwiseOnDemand]: 11/13 looper letters, 0 selfloop transitions, 1 changer transitions 0/6 dead transitions. [2021-06-11 09:22:02,343 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 13 places, 6 transitions, 26 flow [2021-06-11 09:22:02,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:22:02,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:22:02,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 32 transitions. [2021-06-11 09:22:02,343 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8205128205128205 [2021-06-11 09:22:02,343 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 32 transitions. [2021-06-11 09:22:02,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 32 transitions. [2021-06-11 09:22:02,343 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:22:02,343 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 32 transitions. [2021-06-11 09:22:02,344 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) [2021-06-11 09:22:02,344 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) [2021-06-11 09:22:02,344 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) [2021-06-11 09:22:02,344 INFO L185 Difference]: Start difference. First operand has 12 places, 7 transitions, 26 flow. Second operand 3 states and 32 transitions. [2021-06-11 09:22:02,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 13 places, 6 transitions, 26 flow [2021-06-11 09:22:02,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 13 places, 6 transitions, 24 flow, removed 1 selfloop flow, removed 0 redundant places. [2021-06-11 09:22:02,345 INFO L241 Difference]: Finished difference. Result has 13 places, 6 transitions, 24 flow [2021-06-11 09:22:02,345 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} [2021-06-11 09:22:02,345 INFO L343 CegarLoopForPetriNet]: 12 programPoint places, 1 predicate places. [2021-06-11 09:22:02,345 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:02,346 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 13 places, 6 transitions, 24 flow [2021-06-11 09:22:02,346 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 13 places, 6 transitions, 24 flow [2021-06-11 09:22:02,346 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 13 places, 6 transitions, 24 flow [2021-06-11 09:22:02,347 INFO L129 PetriNetUnfolder]: 0/6 cut-off events. [2021-06-11 09:22:02,347 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:02,347 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. [2021-06-11 09:22:02,347 INFO L151 LiptonReduction]: Number of co-enabled transitions 8 [2021-06-11 09:22:02,348 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:22:02,348 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:22:02,348 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 3 [2021-06-11 09:22:02,348 INFO L480 AbstractCegarLoop]: Abstraction has has 13 places, 6 transitions, 24 flow [2021-06-11 09:22:02,349 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) [2021-06-11 09:22:02,349 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:22:02,349 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2021-06-11 09:22:02,349 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-11 09:22:02,349 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:22:02,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:22:02,349 INFO L82 PathProgramCache]: Analyzing trace with hash 1643499, now seen corresponding path program 1 times [2021-06-11 09:22:02,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:22:02,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257069456] [2021-06-11 09:22:02,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:22:02,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:22:02,352 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:22:02,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:22:02,370 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:22:02,371 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:22:02,371 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:22:02,371 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-11 09:22:02,371 WARN L342 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:22:02,372 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2021-06-11 09:22:02,377 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:22:02,377 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 09:22:02,378 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:22:02,378 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:22:02,378 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:22:02,378 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:22:02,379 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:22:02,379 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:22:02,379 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:22:02,379 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:22:02,379 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 21 places, 14 transitions, 49 flow [2021-06-11 09:22:02,382 INFO L129 PetriNetUnfolder]: 0/23 cut-off events. [2021-06-11 09:22:02,382 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:02,382 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. [2021-06-11 09:22:02,383 INFO L82 GeneralOperation]: Start removeDead. Operand has 21 places, 14 transitions, 49 flow [2021-06-11 09:22:02,383 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 19 places, 12 transitions, 45 flow [2021-06-11 09:22:02,383 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:02,383 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 19 places, 12 transitions, 45 flow [2021-06-11 09:22:02,383 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 19 places, 12 transitions, 45 flow [2021-06-11 09:22:02,384 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 19 places, 12 transitions, 45 flow [2021-06-11 09:22:02,386 INFO L129 PetriNetUnfolder]: 0/15 cut-off events. [2021-06-11 09:22:02,386 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:02,386 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. [2021-06-11 09:22:02,386 INFO L151 LiptonReduction]: Number of co-enabled transitions 60 [2021-06-11 09:22:02,443 INFO L163 LiptonReduction]: Checked pairs total: 21 [2021-06-11 09:22:02,443 INFO L165 LiptonReduction]: Total number of compositions: 3 [2021-06-11 09:22:02,443 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 60 [2021-06-11 09:22:02,444 INFO L129 PetriNetUnfolder]: 0/1 cut-off events. [2021-06-11 09:22:02,444 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:02,444 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:22:02,445 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-06-11 09:22:02,445 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:22:02,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:22:02,445 INFO L82 PathProgramCache]: Analyzing trace with hash 2211, now seen corresponding path program 1 times [2021-06-11 09:22:02,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:22:02,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699934440] [2021-06-11 09:22:02,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:22:02,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:22:02,450 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:22:02,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:22:02,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:22:02,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699934440] [2021-06-11 09:22:02,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:22:02,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 09:22:02,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128239216] [2021-06-11 09:22:02,453 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:22:02,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:22:02,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:22:02,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:22:02,454 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 17 [2021-06-11 09:22:02,454 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) [2021-06-11 09:22:02,454 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:22:02,454 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 17 [2021-06-11 09:22:02,454 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:22:02,456 INFO L129 PetriNetUnfolder]: 0/8 cut-off events. [2021-06-11 09:22:02,457 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:02,457 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. [2021-06-11 09:22:02,457 INFO L132 encePairwiseOnDemand]: 15/17 looper letters, 0 selfloop transitions, 1 changer transitions 0/8 dead transitions. [2021-06-11 09:22:02,457 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 17 places, 8 transitions, 39 flow [2021-06-11 09:22:02,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:22:02,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:22:02,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 44 transitions. [2021-06-11 09:22:02,458 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8627450980392157 [2021-06-11 09:22:02,458 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 44 transitions. [2021-06-11 09:22:02,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 44 transitions. [2021-06-11 09:22:02,458 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:22:02,458 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 44 transitions. [2021-06-11 09:22:02,458 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) [2021-06-11 09:22:02,459 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) [2021-06-11 09:22:02,459 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) [2021-06-11 09:22:02,459 INFO L185 Difference]: Start difference. First operand has 16 places, 9 transitions, 39 flow. Second operand 3 states and 44 transitions. [2021-06-11 09:22:02,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 17 places, 8 transitions, 39 flow [2021-06-11 09:22:02,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 8 transitions, 33 flow, removed 3 selfloop flow, removed 0 redundant places. [2021-06-11 09:22:02,460 INFO L241 Difference]: Finished difference. Result has 17 places, 8 transitions, 33 flow [2021-06-11 09:22:02,460 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} [2021-06-11 09:22:02,460 INFO L343 CegarLoopForPetriNet]: 16 programPoint places, 1 predicate places. [2021-06-11 09:22:02,460 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:02,460 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 17 places, 8 transitions, 33 flow [2021-06-11 09:22:02,461 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 17 places, 8 transitions, 33 flow [2021-06-11 09:22:02,461 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 17 places, 8 transitions, 33 flow [2021-06-11 09:22:02,463 INFO L129 PetriNetUnfolder]: 0/8 cut-off events. [2021-06-11 09:22:02,463 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:02,463 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. [2021-06-11 09:22:02,463 INFO L151 LiptonReduction]: Number of co-enabled transitions 18 [2021-06-11 09:22:02,463 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:22:02,463 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:22:02,464 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 4 [2021-06-11 09:22:02,464 INFO L480 AbstractCegarLoop]: Abstraction has has 17 places, 8 transitions, 33 flow [2021-06-11 09:22:02,464 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) [2021-06-11 09:22:02,464 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:22:02,465 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2021-06-11 09:22:02,465 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-11 09:22:02,465 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:22:02,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:22:02,465 INFO L82 PathProgramCache]: Analyzing trace with hash 66279044, now seen corresponding path program 1 times [2021-06-11 09:22:02,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:22:02,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810681852] [2021-06-11 09:22:02,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:22:02,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:22:02,468 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:22:02,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:22:02,470 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:22:02,471 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:22:02,471 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:22:02,471 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-11 09:22:02,471 WARN L342 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:22:02,472 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2021-06-11 09:22:02,477 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:22:02,478 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 09:22:02,478 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:22:02,478 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:22:02,478 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:22:02,479 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:22:02,479 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:22:02,479 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:22:02,479 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:22:02,479 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:22:02,479 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 26 places, 17 transitions, 66 flow [2021-06-11 09:22:02,483 INFO L129 PetriNetUnfolder]: 0/29 cut-off events. [2021-06-11 09:22:02,483 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:02,483 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. [2021-06-11 09:22:02,483 INFO L82 GeneralOperation]: Start removeDead. Operand has 26 places, 17 transitions, 66 flow [2021-06-11 09:22:02,484 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 24 places, 15 transitions, 62 flow [2021-06-11 09:22:02,484 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:02,484 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 24 places, 15 transitions, 62 flow [2021-06-11 09:22:02,484 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 24 places, 15 transitions, 62 flow [2021-06-11 09:22:02,484 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 24 places, 15 transitions, 62 flow [2021-06-11 09:22:02,487 INFO L129 PetriNetUnfolder]: 0/19 cut-off events. [2021-06-11 09:22:02,487 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:02,487 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. [2021-06-11 09:22:02,487 INFO L151 LiptonReduction]: Number of co-enabled transitions 104 [2021-06-11 09:22:02,539 INFO L163 LiptonReduction]: Checked pairs total: 38 [2021-06-11 09:22:02,540 INFO L165 LiptonReduction]: Total number of compositions: 4 [2021-06-11 09:22:02,540 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 56 [2021-06-11 09:22:02,541 INFO L129 PetriNetUnfolder]: 0/1 cut-off events. [2021-06-11 09:22:02,541 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:02,541 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:22:02,541 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-06-11 09:22:02,541 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:22:02,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:22:02,542 INFO L82 PathProgramCache]: Analyzing trace with hash 2851, now seen corresponding path program 1 times [2021-06-11 09:22:02,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:22:02,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77569939] [2021-06-11 09:22:02,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:22:02,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:22:02,546 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:22:02,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:22:02,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:22:02,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77569939] [2021-06-11 09:22:02,549 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:22:02,549 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 09:22:02,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221874524] [2021-06-11 09:22:02,549 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:22:02,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:22:02,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:22:02,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:22:02,550 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 21 [2021-06-11 09:22:02,550 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) [2021-06-11 09:22:02,550 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:22:02,550 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 21 [2021-06-11 09:22:02,550 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:22:02,552 INFO L129 PetriNetUnfolder]: 0/10 cut-off events. [2021-06-11 09:22:02,553 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:02,553 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. [2021-06-11 09:22:02,553 INFO L132 encePairwiseOnDemand]: 19/21 looper letters, 0 selfloop transitions, 1 changer transitions 0/10 dead transitions. [2021-06-11 09:22:02,553 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 10 transitions, 54 flow [2021-06-11 09:22:02,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:22:02,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:22:02,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 56 transitions. [2021-06-11 09:22:02,554 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8888888888888888 [2021-06-11 09:22:02,554 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 56 transitions. [2021-06-11 09:22:02,554 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 56 transitions. [2021-06-11 09:22:02,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:22:02,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 56 transitions. [2021-06-11 09:22:02,554 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) [2021-06-11 09:22:02,555 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) [2021-06-11 09:22:02,555 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) [2021-06-11 09:22:02,555 INFO L185 Difference]: Start difference. First operand has 20 places, 11 transitions, 54 flow. Second operand 3 states and 56 transitions. [2021-06-11 09:22:02,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 10 transitions, 54 flow [2021-06-11 09:22:02,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 10 transitions, 42 flow, removed 6 selfloop flow, removed 0 redundant places. [2021-06-11 09:22:02,556 INFO L241 Difference]: Finished difference. Result has 21 places, 10 transitions, 42 flow [2021-06-11 09:22:02,556 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} [2021-06-11 09:22:02,556 INFO L343 CegarLoopForPetriNet]: 20 programPoint places, 1 predicate places. [2021-06-11 09:22:02,556 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:02,556 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 21 places, 10 transitions, 42 flow [2021-06-11 09:22:02,557 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 21 places, 10 transitions, 42 flow [2021-06-11 09:22:02,557 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 21 places, 10 transitions, 42 flow [2021-06-11 09:22:02,558 INFO L129 PetriNetUnfolder]: 0/10 cut-off events. [2021-06-11 09:22:02,558 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:02,558 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. [2021-06-11 09:22:02,559 INFO L151 LiptonReduction]: Number of co-enabled transitions 32 [2021-06-11 09:22:02,559 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:22:02,559 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:22:02,559 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 3 [2021-06-11 09:22:02,560 INFO L480 AbstractCegarLoop]: Abstraction has has 21 places, 10 transitions, 42 flow [2021-06-11 09:22:02,560 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) [2021-06-11 09:22:02,560 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:22:02,560 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2021-06-11 09:22:02,560 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-11 09:22:02,560 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:22:02,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:22:02,561 INFO L82 PathProgramCache]: Analyzing trace with hash -1646739026, now seen corresponding path program 1 times [2021-06-11 09:22:02,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:22:02,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592831645] [2021-06-11 09:22:02,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:22:02,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:22:02,564 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:22:02,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:22:02,565 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:22:02,566 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:22:02,566 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:22:02,567 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-11 09:22:02,567 WARN L342 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:22:02,567 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2021-06-11 09:22:02,573 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:22:02,574 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 09:22:02,574 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:22:02,575 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:22:02,575 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:22:02,575 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:22:02,575 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:22:02,575 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:22:02,575 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:22:02,575 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:22:02,576 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 31 places, 20 transitions, 85 flow [2021-06-11 09:22:02,579 INFO L129 PetriNetUnfolder]: 0/35 cut-off events. [2021-06-11 09:22:02,579 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:02,579 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. [2021-06-11 09:22:02,580 INFO L82 GeneralOperation]: Start removeDead. Operand has 31 places, 20 transitions, 85 flow [2021-06-11 09:22:02,580 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 18 transitions, 81 flow [2021-06-11 09:22:02,580 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:02,580 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 29 places, 18 transitions, 81 flow [2021-06-11 09:22:02,580 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 29 places, 18 transitions, 81 flow [2021-06-11 09:22:02,581 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 29 places, 18 transitions, 81 flow [2021-06-11 09:22:02,583 INFO L129 PetriNetUnfolder]: 0/23 cut-off events. [2021-06-11 09:22:02,583 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:02,583 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. [2021-06-11 09:22:02,584 INFO L151 LiptonReduction]: Number of co-enabled transitions 160 [2021-06-11 09:22:02,674 INFO L163 LiptonReduction]: Checked pairs total: 60 [2021-06-11 09:22:02,674 INFO L165 LiptonReduction]: Total number of compositions: 5 [2021-06-11 09:22:02,674 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 94 [2021-06-11 09:22:02,681 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-06-11 09:22:02,682 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:02,682 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:22:02,682 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-06-11 09:22:02,682 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:22:02,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:22:02,682 INFO L82 PathProgramCache]: Analyzing trace with hash 3619, now seen corresponding path program 1 times [2021-06-11 09:22:02,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:22:02,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122633777] [2021-06-11 09:22:02,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:22:02,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:22:02,692 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:22:02,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:22:02,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:22:02,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122633777] [2021-06-11 09:22:02,696 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:22:02,696 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 09:22:02,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495009386] [2021-06-11 09:22:02,697 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:22:02,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:22:02,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:22:02,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:22:02,697 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 25 [2021-06-11 09:22:02,698 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) [2021-06-11 09:22:02,698 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:22:02,698 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 25 [2021-06-11 09:22:02,698 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:22:02,701 INFO L129 PetriNetUnfolder]: 0/12 cut-off events. [2021-06-11 09:22:02,702 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:02,702 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. [2021-06-11 09:22:02,702 INFO L132 encePairwiseOnDemand]: 23/25 looper letters, 0 selfloop transitions, 1 changer transitions 0/12 dead transitions. [2021-06-11 09:22:02,702 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 12 transitions, 71 flow [2021-06-11 09:22:02,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:22:02,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:22:02,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 68 transitions. [2021-06-11 09:22:02,703 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9066666666666666 [2021-06-11 09:22:02,703 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 68 transitions. [2021-06-11 09:22:02,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 68 transitions. [2021-06-11 09:22:02,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:22:02,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 68 transitions. [2021-06-11 09:22:02,706 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) [2021-06-11 09:22:02,708 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) [2021-06-11 09:22:02,708 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) [2021-06-11 09:22:02,708 INFO L185 Difference]: Start difference. First operand has 24 places, 13 transitions, 71 flow. Second operand 3 states and 68 transitions. [2021-06-11 09:22:02,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 12 transitions, 71 flow [2021-06-11 09:22:02,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 12 transitions, 51 flow, removed 10 selfloop flow, removed 0 redundant places. [2021-06-11 09:22:02,711 INFO L241 Difference]: Finished difference. Result has 25 places, 12 transitions, 51 flow [2021-06-11 09:22:02,711 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} [2021-06-11 09:22:02,711 INFO L343 CegarLoopForPetriNet]: 24 programPoint places, 1 predicate places. [2021-06-11 09:22:02,711 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:02,712 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 25 places, 12 transitions, 51 flow [2021-06-11 09:22:02,712 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 25 places, 12 transitions, 51 flow [2021-06-11 09:22:02,712 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 25 places, 12 transitions, 51 flow [2021-06-11 09:22:02,715 INFO L129 PetriNetUnfolder]: 0/12 cut-off events. [2021-06-11 09:22:02,715 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:02,716 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. [2021-06-11 09:22:02,716 INFO L151 LiptonReduction]: Number of co-enabled transitions 50 [2021-06-11 09:22:02,718 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:22:02,720 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:22:02,720 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 9 [2021-06-11 09:22:02,721 INFO L480 AbstractCegarLoop]: Abstraction has has 25 places, 12 transitions, 51 flow [2021-06-11 09:22:02,721 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) [2021-06-11 09:22:02,721 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:22:02,724 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-06-11 09:22:02,724 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-11 09:22:02,724 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:22:02,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:22:02,725 INFO L82 PathProgramCache]: Analyzing trace with hash 1085119695, now seen corresponding path program 1 times [2021-06-11 09:22:02,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:22:02,725 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929926787] [2021-06-11 09:22:02,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:22:02,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:22:02,732 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:22:02,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:22:02,744 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:22:02,745 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:22:02,745 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:22:02,745 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-11 09:22:02,745 WARN L342 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:22:02,745 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2021-06-11 09:22:02,756 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:22:02,757 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 09:22:02,757 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:22:02,758 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:22:02,758 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:22:02,758 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:22:02,758 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:22:02,758 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:22:02,758 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:22:02,758 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:22:02,758 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 36 places, 23 transitions, 106 flow [2021-06-11 09:22:02,761 INFO L129 PetriNetUnfolder]: 0/41 cut-off events. [2021-06-11 09:22:02,762 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:02,762 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. [2021-06-11 09:22:02,762 INFO L82 GeneralOperation]: Start removeDead. Operand has 36 places, 23 transitions, 106 flow [2021-06-11 09:22:02,762 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 34 places, 21 transitions, 102 flow [2021-06-11 09:22:02,762 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:02,762 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 34 places, 21 transitions, 102 flow [2021-06-11 09:22:02,762 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 34 places, 21 transitions, 102 flow [2021-06-11 09:22:02,763 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 34 places, 21 transitions, 102 flow [2021-06-11 09:22:02,765 INFO L129 PetriNetUnfolder]: 0/27 cut-off events. [2021-06-11 09:22:02,765 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:02,765 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. [2021-06-11 09:22:02,765 INFO L151 LiptonReduction]: Number of co-enabled transitions 228 [2021-06-11 09:22:02,848 INFO L163 LiptonReduction]: Checked pairs total: 87 [2021-06-11 09:22:02,848 INFO L165 LiptonReduction]: Total number of compositions: 6 [2021-06-11 09:22:02,848 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 86 [2021-06-11 09:22:02,849 INFO L129 PetriNetUnfolder]: 0/1 cut-off events. [2021-06-11 09:22:02,849 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:02,850 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:22:02,850 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-06-11 09:22:02,850 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:22:02,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:22:02,850 INFO L82 PathProgramCache]: Analyzing trace with hash 4515, now seen corresponding path program 1 times [2021-06-11 09:22:02,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:22:02,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010404544] [2021-06-11 09:22:02,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:22:02,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:22:02,854 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:22:02,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:22:02,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:22:02,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010404544] [2021-06-11 09:22:02,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:22:02,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 09:22:02,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139998175] [2021-06-11 09:22:02,857 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:22:02,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:22:02,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:22:02,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:22:02,857 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 29 [2021-06-11 09:22:02,857 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) [2021-06-11 09:22:02,858 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:22:02,858 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 29 [2021-06-11 09:22:02,858 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:22:02,860 INFO L129 PetriNetUnfolder]: 0/14 cut-off events. [2021-06-11 09:22:02,860 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:02,860 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. [2021-06-11 09:22:02,860 INFO L132 encePairwiseOnDemand]: 27/29 looper letters, 0 selfloop transitions, 1 changer transitions 0/14 dead transitions. [2021-06-11 09:22:02,860 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 14 transitions, 90 flow [2021-06-11 09:22:02,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:22:02,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:22:02,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2021-06-11 09:22:02,861 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9195402298850575 [2021-06-11 09:22:02,861 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 80 transitions. [2021-06-11 09:22:02,861 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 80 transitions. [2021-06-11 09:22:02,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:22:02,861 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 80 transitions. [2021-06-11 09:22:02,861 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) [2021-06-11 09:22:02,861 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) [2021-06-11 09:22:02,862 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) [2021-06-11 09:22:02,862 INFO L185 Difference]: Start difference. First operand has 28 places, 15 transitions, 90 flow. Second operand 3 states and 80 transitions. [2021-06-11 09:22:02,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 14 transitions, 90 flow [2021-06-11 09:22:02,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 14 transitions, 60 flow, removed 15 selfloop flow, removed 0 redundant places. [2021-06-11 09:22:02,865 INFO L241 Difference]: Finished difference. Result has 29 places, 14 transitions, 60 flow [2021-06-11 09:22:02,866 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} [2021-06-11 09:22:02,866 INFO L343 CegarLoopForPetriNet]: 28 programPoint places, 1 predicate places. [2021-06-11 09:22:02,866 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:02,866 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 29 places, 14 transitions, 60 flow [2021-06-11 09:22:02,866 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 29 places, 14 transitions, 60 flow [2021-06-11 09:22:02,866 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 29 places, 14 transitions, 60 flow [2021-06-11 09:22:02,872 INFO L129 PetriNetUnfolder]: 0/14 cut-off events. [2021-06-11 09:22:02,873 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:02,873 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. [2021-06-11 09:22:02,873 INFO L151 LiptonReduction]: Number of co-enabled transitions 72 [2021-06-11 09:22:02,873 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:22:02,873 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:22:02,874 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 8 [2021-06-11 09:22:02,874 INFO L480 AbstractCegarLoop]: Abstraction has has 29 places, 14 transitions, 60 flow [2021-06-11 09:22:02,874 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) [2021-06-11 09:22:02,874 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:22:02,874 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 09:22:02,874 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-06-11 09:22:02,874 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:22:02,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:22:02,875 INFO L82 PathProgramCache]: Analyzing trace with hash -1719135375, now seen corresponding path program 1 times [2021-06-11 09:22:02,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:22:02,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549204802] [2021-06-11 09:22:02,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:22:02,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:22:02,877 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:22:02,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:22:02,879 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:22:02,880 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:22:02,880 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:22:02,880 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-06-11 09:22:02,880 WARN L342 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:22:02,880 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2021-06-11 09:22:02,887 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:22:02,887 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 09:22:02,888 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:22:02,888 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:22:02,888 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:22:02,888 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:22:02,888 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:22:02,888 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:22:02,888 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:22:02,888 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:22:02,889 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 41 places, 26 transitions, 129 flow [2021-06-11 09:22:02,891 INFO L129 PetriNetUnfolder]: 0/47 cut-off events. [2021-06-11 09:22:02,891 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:02,891 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. [2021-06-11 09:22:02,891 INFO L82 GeneralOperation]: Start removeDead. Operand has 41 places, 26 transitions, 129 flow [2021-06-11 09:22:02,892 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 39 places, 24 transitions, 125 flow [2021-06-11 09:22:02,892 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:02,892 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 39 places, 24 transitions, 125 flow [2021-06-11 09:22:02,892 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 39 places, 24 transitions, 125 flow [2021-06-11 09:22:02,892 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 39 places, 24 transitions, 125 flow [2021-06-11 09:22:02,894 INFO L129 PetriNetUnfolder]: 0/31 cut-off events. [2021-06-11 09:22:02,894 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:02,894 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. [2021-06-11 09:22:02,894 INFO L151 LiptonReduction]: Number of co-enabled transitions 308 [2021-06-11 09:22:03,008 INFO L163 LiptonReduction]: Checked pairs total: 119 [2021-06-11 09:22:03,008 INFO L165 LiptonReduction]: Total number of compositions: 7 [2021-06-11 09:22:03,009 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 117 [2021-06-11 09:22:03,009 INFO L129 PetriNetUnfolder]: 0/1 cut-off events. [2021-06-11 09:22:03,010 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:03,010 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:22:03,010 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-06-11 09:22:03,010 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:22:03,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:22:03,010 INFO L82 PathProgramCache]: Analyzing trace with hash 5539, now seen corresponding path program 1 times [2021-06-11 09:22:03,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:22:03,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590756894] [2021-06-11 09:22:03,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:22:03,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:22:03,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:22:03,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:22:03,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:22:03,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590756894] [2021-06-11 09:22:03,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:22:03,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 09:22:03,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957541918] [2021-06-11 09:22:03,017 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:22:03,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:22:03,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:22:03,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:22:03,018 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 33 [2021-06-11 09:22:03,018 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) [2021-06-11 09:22:03,018 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:22:03,018 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 33 [2021-06-11 09:22:03,018 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:22:03,020 INFO L129 PetriNetUnfolder]: 0/16 cut-off events. [2021-06-11 09:22:03,021 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:03,021 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. [2021-06-11 09:22:03,021 INFO L132 encePairwiseOnDemand]: 31/33 looper letters, 0 selfloop transitions, 1 changer transitions 0/16 dead transitions. [2021-06-11 09:22:03,021 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 16 transitions, 111 flow [2021-06-11 09:22:03,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:22:03,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:22:03,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 92 transitions. [2021-06-11 09:22:03,022 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9292929292929293 [2021-06-11 09:22:03,022 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 92 transitions. [2021-06-11 09:22:03,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 92 transitions. [2021-06-11 09:22:03,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:22:03,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 92 transitions. [2021-06-11 09:22:03,023 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) [2021-06-11 09:22:03,023 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) [2021-06-11 09:22:03,023 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) [2021-06-11 09:22:03,023 INFO L185 Difference]: Start difference. First operand has 32 places, 17 transitions, 111 flow. Second operand 3 states and 92 transitions. [2021-06-11 09:22:03,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 16 transitions, 111 flow [2021-06-11 09:22:03,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 16 transitions, 69 flow, removed 21 selfloop flow, removed 0 redundant places. [2021-06-11 09:22:03,024 INFO L241 Difference]: Finished difference. Result has 33 places, 16 transitions, 69 flow [2021-06-11 09:22:03,024 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} [2021-06-11 09:22:03,025 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 1 predicate places. [2021-06-11 09:22:03,025 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:03,025 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 33 places, 16 transitions, 69 flow [2021-06-11 09:22:03,025 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 33 places, 16 transitions, 69 flow [2021-06-11 09:22:03,025 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 33 places, 16 transitions, 69 flow [2021-06-11 09:22:03,027 INFO L129 PetriNetUnfolder]: 0/16 cut-off events. [2021-06-11 09:22:03,027 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:03,027 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. [2021-06-11 09:22:03,027 INFO L151 LiptonReduction]: Number of co-enabled transitions 98 [2021-06-11 09:22:03,028 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:22:03,028 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:22:03,028 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 3 [2021-06-11 09:22:03,028 INFO L480 AbstractCegarLoop]: Abstraction has has 33 places, 16 transitions, 69 flow [2021-06-11 09:22:03,029 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) [2021-06-11 09:22:03,029 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:22:03,029 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 09:22:03,029 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-06-11 09:22:03,029 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:22:03,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:22:03,029 INFO L82 PathProgramCache]: Analyzing trace with hash 779611434, now seen corresponding path program 1 times [2021-06-11 09:22:03,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:22:03,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392051664] [2021-06-11 09:22:03,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:22:03,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:22:03,033 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:22:03,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:22:03,035 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:22:03,036 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:22:03,036 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:22:03,036 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-06-11 09:22:03,036 WARN L342 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:22:03,037 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2021-06-11 09:22:03,045 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:22:03,045 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 09:22:03,046 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:22:03,046 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:22:03,046 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:22:03,046 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:22:03,046 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:22:03,046 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:22:03,046 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:22:03,046 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:22:03,062 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 46 places, 29 transitions, 154 flow [2021-06-11 09:22:03,065 INFO L129 PetriNetUnfolder]: 0/53 cut-off events. [2021-06-11 09:22:03,065 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:03,065 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. [2021-06-11 09:22:03,065 INFO L82 GeneralOperation]: Start removeDead. Operand has 46 places, 29 transitions, 154 flow [2021-06-11 09:22:03,066 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 27 transitions, 150 flow [2021-06-11 09:22:03,066 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:03,066 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 44 places, 27 transitions, 150 flow [2021-06-11 09:22:03,066 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 44 places, 27 transitions, 150 flow [2021-06-11 09:22:03,066 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 44 places, 27 transitions, 150 flow [2021-06-11 09:22:03,068 INFO L129 PetriNetUnfolder]: 0/35 cut-off events. [2021-06-11 09:22:03,068 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:03,069 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. [2021-06-11 09:22:03,069 INFO L151 LiptonReduction]: Number of co-enabled transitions 400 [2021-06-11 09:22:03,208 INFO L163 LiptonReduction]: Checked pairs total: 156 [2021-06-11 09:22:03,208 INFO L165 LiptonReduction]: Total number of compositions: 8 [2021-06-11 09:22:03,209 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 143 [2021-06-11 09:22:03,210 INFO L129 PetriNetUnfolder]: 0/1 cut-off events. [2021-06-11 09:22:03,210 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:03,210 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:22:03,210 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-06-11 09:22:03,210 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:22:03,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:22:03,211 INFO L82 PathProgramCache]: Analyzing trace with hash 6691, now seen corresponding path program 1 times [2021-06-11 09:22:03,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:22:03,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101545954] [2021-06-11 09:22:03,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:22:03,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:22:03,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:22:03,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:22:03,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:22:03,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101545954] [2021-06-11 09:22:03,222 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:22:03,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 09:22:03,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379075562] [2021-06-11 09:22:03,222 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:22:03,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:22:03,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:22:03,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:22:03,223 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 37 [2021-06-11 09:22:03,223 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) [2021-06-11 09:22:03,223 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:22:03,223 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 37 [2021-06-11 09:22:03,223 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:22:03,226 INFO L129 PetriNetUnfolder]: 0/18 cut-off events. [2021-06-11 09:22:03,226 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:03,226 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. [2021-06-11 09:22:03,227 INFO L132 encePairwiseOnDemand]: 35/37 looper letters, 0 selfloop transitions, 1 changer transitions 0/18 dead transitions. [2021-06-11 09:22:03,227 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 18 transitions, 134 flow [2021-06-11 09:22:03,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:22:03,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:22:03,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 104 transitions. [2021-06-11 09:22:03,228 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9369369369369369 [2021-06-11 09:22:03,228 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 104 transitions. [2021-06-11 09:22:03,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 104 transitions. [2021-06-11 09:22:03,228 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:22:03,228 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 104 transitions. [2021-06-11 09:22:03,229 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) [2021-06-11 09:22:03,229 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) [2021-06-11 09:22:03,230 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) [2021-06-11 09:22:03,230 INFO L185 Difference]: Start difference. First operand has 36 places, 19 transitions, 134 flow. Second operand 3 states and 104 transitions. [2021-06-11 09:22:03,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 18 transitions, 134 flow [2021-06-11 09:22:03,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 18 transitions, 78 flow, removed 28 selfloop flow, removed 0 redundant places. [2021-06-11 09:22:03,232 INFO L241 Difference]: Finished difference. Result has 37 places, 18 transitions, 78 flow [2021-06-11 09:22:03,232 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} [2021-06-11 09:22:03,232 INFO L343 CegarLoopForPetriNet]: 36 programPoint places, 1 predicate places. [2021-06-11 09:22:03,232 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:03,233 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 37 places, 18 transitions, 78 flow [2021-06-11 09:22:03,233 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 37 places, 18 transitions, 78 flow [2021-06-11 09:22:03,233 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 37 places, 18 transitions, 78 flow [2021-06-11 09:22:03,236 INFO L129 PetriNetUnfolder]: 0/18 cut-off events. [2021-06-11 09:22:03,236 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:03,236 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. [2021-06-11 09:22:03,237 INFO L151 LiptonReduction]: Number of co-enabled transitions 128 [2021-06-11 09:22:03,238 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:22:03,238 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:22:03,238 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 6 [2021-06-11 09:22:03,240 INFO L480 AbstractCegarLoop]: Abstraction has has 37 places, 18 transitions, 78 flow [2021-06-11 09:22:03,240 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) [2021-06-11 09:22:03,240 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:22:03,240 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 09:22:03,240 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-06-11 09:22:03,240 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:22:03,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:22:03,241 INFO L82 PathProgramCache]: Analyzing trace with hash -2053304524, now seen corresponding path program 1 times [2021-06-11 09:22:03,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:22:03,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75875931] [2021-06-11 09:22:03,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:22:03,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:22:03,248 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:22:03,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:22:03,255 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:22:03,259 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:22:03,260 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:22:03,261 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-06-11 09:22:03,261 WARN L342 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:22:03,261 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2021-06-11 09:22:03,273 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:22:03,274 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 09:22:03,274 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:22:03,274 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:22:03,274 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:22:03,275 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:22:03,275 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:22:03,275 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:22:03,275 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:22:03,275 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:22:03,276 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 51 places, 32 transitions, 181 flow [2021-06-11 09:22:03,279 INFO L129 PetriNetUnfolder]: 0/59 cut-off events. [2021-06-11 09:22:03,279 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:03,279 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. [2021-06-11 09:22:03,280 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 32 transitions, 181 flow [2021-06-11 09:22:03,280 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 49 places, 30 transitions, 177 flow [2021-06-11 09:22:03,280 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:03,280 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 49 places, 30 transitions, 177 flow [2021-06-11 09:22:03,281 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 49 places, 30 transitions, 177 flow [2021-06-11 09:22:03,281 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 49 places, 30 transitions, 177 flow [2021-06-11 09:22:03,285 INFO L129 PetriNetUnfolder]: 0/39 cut-off events. [2021-06-11 09:22:03,285 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:03,286 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. [2021-06-11 09:22:03,286 INFO L151 LiptonReduction]: Number of co-enabled transitions 504 [2021-06-11 09:22:03,441 INFO L163 LiptonReduction]: Checked pairs total: 198 [2021-06-11 09:22:03,441 INFO L165 LiptonReduction]: Total number of compositions: 9 [2021-06-11 09:22:03,441 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 161 [2021-06-11 09:22:03,442 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-06-11 09:22:03,442 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:03,443 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:22:03,443 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-06-11 09:22:03,443 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:22:03,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:22:03,443 INFO L82 PathProgramCache]: Analyzing trace with hash 7971, now seen corresponding path program 1 times [2021-06-11 09:22:03,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:22:03,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998792767] [2021-06-11 09:22:03,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:22:03,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:22:03,453 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:22:03,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:22:03,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:22:03,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998792767] [2021-06-11 09:22:03,455 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:22:03,455 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 09:22:03,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219396209] [2021-06-11 09:22:03,456 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:22:03,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:22:03,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:22:03,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:22:03,457 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 41 [2021-06-11 09:22:03,457 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) [2021-06-11 09:22:03,457 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:22:03,457 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 41 [2021-06-11 09:22:03,457 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:22:03,459 INFO L129 PetriNetUnfolder]: 0/20 cut-off events. [2021-06-11 09:22:03,459 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:03,459 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. [2021-06-11 09:22:03,459 INFO L132 encePairwiseOnDemand]: 39/41 looper letters, 0 selfloop transitions, 1 changer transitions 0/20 dead transitions. [2021-06-11 09:22:03,460 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 20 transitions, 159 flow [2021-06-11 09:22:03,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:22:03,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:22:03,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 116 transitions. [2021-06-11 09:22:03,461 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.943089430894309 [2021-06-11 09:22:03,461 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 116 transitions. [2021-06-11 09:22:03,461 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 116 transitions. [2021-06-11 09:22:03,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:22:03,461 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 116 transitions. [2021-06-11 09:22:03,461 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) [2021-06-11 09:22:03,463 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) [2021-06-11 09:22:03,463 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) [2021-06-11 09:22:03,463 INFO L185 Difference]: Start difference. First operand has 40 places, 21 transitions, 159 flow. Second operand 3 states and 116 transitions. [2021-06-11 09:22:03,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 20 transitions, 159 flow [2021-06-11 09:22:03,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 20 transitions, 87 flow, removed 36 selfloop flow, removed 0 redundant places. [2021-06-11 09:22:03,465 INFO L241 Difference]: Finished difference. Result has 41 places, 20 transitions, 87 flow [2021-06-11 09:22:03,465 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} [2021-06-11 09:22:03,465 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, 1 predicate places. [2021-06-11 09:22:03,465 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:03,465 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 41 places, 20 transitions, 87 flow [2021-06-11 09:22:03,466 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 41 places, 20 transitions, 87 flow [2021-06-11 09:22:03,466 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 41 places, 20 transitions, 87 flow [2021-06-11 09:22:03,467 INFO L129 PetriNetUnfolder]: 0/20 cut-off events. [2021-06-11 09:22:03,468 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:03,468 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. [2021-06-11 09:22:03,468 INFO L151 LiptonReduction]: Number of co-enabled transitions 162 [2021-06-11 09:22:03,469 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:22:03,469 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:22:03,469 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 4 [2021-06-11 09:22:03,469 INFO L480 AbstractCegarLoop]: Abstraction has has 41 places, 20 transitions, 87 flow [2021-06-11 09:22:03,469 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) [2021-06-11 09:22:03,469 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:22:03,469 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 09:22:03,469 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-06-11 09:22:03,470 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:22:03,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:22:03,470 INFO L82 PathProgramCache]: Analyzing trace with hash -607272555, now seen corresponding path program 1 times [2021-06-11 09:22:03,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:22:03,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324575853] [2021-06-11 09:22:03,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:22:03,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:22:03,483 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:22:03,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:22:03,485 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:22:03,486 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:22:03,486 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:22:03,486 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-06-11 09:22:03,486 WARN L342 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:22:03,487 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2021-06-11 09:22:03,501 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:22:03,502 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 09:22:03,502 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:22:03,502 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:22:03,502 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:22:03,502 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:22:03,502 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:22:03,502 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:22:03,503 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:22:03,503 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:22:03,504 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 56 places, 35 transitions, 210 flow [2021-06-11 09:22:03,515 INFO L129 PetriNetUnfolder]: 0/65 cut-off events. [2021-06-11 09:22:03,515 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:03,515 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. [2021-06-11 09:22:03,515 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 35 transitions, 210 flow [2021-06-11 09:22:03,516 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 33 transitions, 206 flow [2021-06-11 09:22:03,516 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:03,516 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 54 places, 33 transitions, 206 flow [2021-06-11 09:22:03,516 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 54 places, 33 transitions, 206 flow [2021-06-11 09:22:03,517 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 54 places, 33 transitions, 206 flow [2021-06-11 09:22:03,519 INFO L129 PetriNetUnfolder]: 0/43 cut-off events. [2021-06-11 09:22:03,519 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:03,519 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. [2021-06-11 09:22:03,520 INFO L151 LiptonReduction]: Number of co-enabled transitions 620 [2021-06-11 09:22:03,738 INFO L163 LiptonReduction]: Checked pairs total: 245 [2021-06-11 09:22:03,738 INFO L165 LiptonReduction]: Total number of compositions: 10 [2021-06-11 09:22:03,738 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 222 [2021-06-11 09:22:03,739 INFO L129 PetriNetUnfolder]: 0/1 cut-off events. [2021-06-11 09:22:03,739 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:03,739 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:22:03,739 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-06-11 09:22:03,739 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:22:03,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:22:03,740 INFO L82 PathProgramCache]: Analyzing trace with hash 9379, now seen corresponding path program 1 times [2021-06-11 09:22:03,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:22:03,740 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360413806] [2021-06-11 09:22:03,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:22:03,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:22:03,743 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:22:03,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:22:03,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:22:03,745 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360413806] [2021-06-11 09:22:03,745 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:22:03,745 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 09:22:03,745 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807666448] [2021-06-11 09:22:03,746 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:22:03,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:22:03,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:22:03,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:22:03,746 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 45 [2021-06-11 09:22:03,746 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) [2021-06-11 09:22:03,746 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:22:03,746 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 45 [2021-06-11 09:22:03,747 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:22:03,749 INFO L129 PetriNetUnfolder]: 0/22 cut-off events. [2021-06-11 09:22:03,749 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:03,749 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. [2021-06-11 09:22:03,749 INFO L132 encePairwiseOnDemand]: 43/45 looper letters, 0 selfloop transitions, 1 changer transitions 0/22 dead transitions. [2021-06-11 09:22:03,749 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 22 transitions, 186 flow [2021-06-11 09:22:03,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:22:03,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:22:03,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 128 transitions. [2021-06-11 09:22:03,750 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9481481481481482 [2021-06-11 09:22:03,750 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 128 transitions. [2021-06-11 09:22:03,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 128 transitions. [2021-06-11 09:22:03,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:22:03,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 128 transitions. [2021-06-11 09:22:03,750 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) [2021-06-11 09:22:03,750 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) [2021-06-11 09:22:03,751 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) [2021-06-11 09:22:03,751 INFO L185 Difference]: Start difference. First operand has 44 places, 23 transitions, 186 flow. Second operand 3 states and 128 transitions. [2021-06-11 09:22:03,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 22 transitions, 186 flow [2021-06-11 09:22:03,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 22 transitions, 96 flow, removed 45 selfloop flow, removed 0 redundant places. [2021-06-11 09:22:03,752 INFO L241 Difference]: Finished difference. Result has 45 places, 22 transitions, 96 flow [2021-06-11 09:22:03,752 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} [2021-06-11 09:22:03,752 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 1 predicate places. [2021-06-11 09:22:03,752 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:03,752 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 45 places, 22 transitions, 96 flow [2021-06-11 09:22:03,752 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 45 places, 22 transitions, 96 flow [2021-06-11 09:22:03,753 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 45 places, 22 transitions, 96 flow [2021-06-11 09:22:03,754 INFO L129 PetriNetUnfolder]: 0/22 cut-off events. [2021-06-11 09:22:03,754 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:03,754 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. [2021-06-11 09:22:03,754 INFO L151 LiptonReduction]: Number of co-enabled transitions 200 [2021-06-11 09:22:03,755 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:22:03,755 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:22:03,755 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 3 [2021-06-11 09:22:03,755 INFO L480 AbstractCegarLoop]: Abstraction has has 45 places, 22 transitions, 96 flow [2021-06-11 09:22:03,756 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) [2021-06-11 09:22:03,756 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:22:03,756 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 09:22:03,756 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-06-11 09:22:03,756 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:22:03,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:22:03,756 INFO L82 PathProgramCache]: Analyzing trace with hash -1208304905, now seen corresponding path program 1 times [2021-06-11 09:22:03,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:22:03,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79070468] [2021-06-11 09:22:03,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:22:03,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:22:03,759 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:22:03,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:22:03,760 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:22:03,761 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:22:03,761 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:22:03,761 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-06-11 09:22:03,761 WARN L342 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:22:03,762 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2021-06-11 09:22:03,772 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:22:03,773 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 09:22:03,773 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:22:03,773 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:22:03,773 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:22:03,773 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:22:03,773 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:22:03,773 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:22:03,773 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:22:03,774 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:22:03,774 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 61 places, 38 transitions, 241 flow [2021-06-11 09:22:03,778 INFO L129 PetriNetUnfolder]: 0/71 cut-off events. [2021-06-11 09:22:03,778 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:03,778 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. [2021-06-11 09:22:03,778 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 38 transitions, 241 flow [2021-06-11 09:22:03,778 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 59 places, 36 transitions, 237 flow [2021-06-11 09:22:03,779 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:03,779 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 59 places, 36 transitions, 237 flow [2021-06-11 09:22:03,779 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 59 places, 36 transitions, 237 flow [2021-06-11 09:22:03,779 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 59 places, 36 transitions, 237 flow [2021-06-11 09:22:03,782 INFO L129 PetriNetUnfolder]: 0/47 cut-off events. [2021-06-11 09:22:03,782 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:03,782 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. [2021-06-11 09:22:03,783 INFO L151 LiptonReduction]: Number of co-enabled transitions 748 [2021-06-11 09:22:04,035 INFO L163 LiptonReduction]: Checked pairs total: 297 [2021-06-11 09:22:04,036 INFO L165 LiptonReduction]: Total number of compositions: 11 [2021-06-11 09:22:04,036 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 257 [2021-06-11 09:22:04,037 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-06-11 09:22:04,037 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:04,037 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:22:04,037 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-06-11 09:22:04,037 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:22:04,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:22:04,037 INFO L82 PathProgramCache]: Analyzing trace with hash 10915, now seen corresponding path program 1 times [2021-06-11 09:22:04,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:22:04,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745939777] [2021-06-11 09:22:04,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:22:04,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:22:04,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:22:04,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:22:04,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:22:04,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745939777] [2021-06-11 09:22:04,044 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:22:04,044 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 09:22:04,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567266241] [2021-06-11 09:22:04,044 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:22:04,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:22:04,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:22:04,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:22:04,045 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 49 [2021-06-11 09:22:04,045 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) [2021-06-11 09:22:04,045 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:22:04,045 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 49 [2021-06-11 09:22:04,045 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:22:04,047 INFO L129 PetriNetUnfolder]: 0/24 cut-off events. [2021-06-11 09:22:04,048 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:04,048 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. [2021-06-11 09:22:04,048 INFO L132 encePairwiseOnDemand]: 47/49 looper letters, 0 selfloop transitions, 1 changer transitions 0/24 dead transitions. [2021-06-11 09:22:04,048 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 24 transitions, 215 flow [2021-06-11 09:22:04,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:22:04,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:22:04,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 140 transitions. [2021-06-11 09:22:04,049 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9523809523809523 [2021-06-11 09:22:04,049 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 140 transitions. [2021-06-11 09:22:04,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 140 transitions. [2021-06-11 09:22:04,049 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:22:04,049 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 140 transitions. [2021-06-11 09:22:04,049 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) [2021-06-11 09:22:04,049 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) [2021-06-11 09:22:04,049 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) [2021-06-11 09:22:04,050 INFO L185 Difference]: Start difference. First operand has 48 places, 25 transitions, 215 flow. Second operand 3 states and 140 transitions. [2021-06-11 09:22:04,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 24 transitions, 215 flow [2021-06-11 09:22:04,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 24 transitions, 105 flow, removed 55 selfloop flow, removed 0 redundant places. [2021-06-11 09:22:04,051 INFO L241 Difference]: Finished difference. Result has 49 places, 24 transitions, 105 flow [2021-06-11 09:22:04,051 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} [2021-06-11 09:22:04,051 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, 1 predicate places. [2021-06-11 09:22:04,051 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:04,051 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 49 places, 24 transitions, 105 flow [2021-06-11 09:22:04,051 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 49 places, 24 transitions, 105 flow [2021-06-11 09:22:04,051 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 49 places, 24 transitions, 105 flow [2021-06-11 09:22:04,053 INFO L129 PetriNetUnfolder]: 0/24 cut-off events. [2021-06-11 09:22:04,053 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:04,053 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. [2021-06-11 09:22:04,053 INFO L151 LiptonReduction]: Number of co-enabled transitions 242 [2021-06-11 09:22:04,054 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:22:04,054 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:22:04,054 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 3 [2021-06-11 09:22:04,055 INFO L480 AbstractCegarLoop]: Abstraction has has 49 places, 24 transitions, 105 flow [2021-06-11 09:22:04,055 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) [2021-06-11 09:22:04,055 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:22:04,055 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 09:22:04,055 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-06-11 09:22:04,055 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:22:04,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:22:04,055 INFO L82 PathProgramCache]: Analyzing trace with hash 941462544, now seen corresponding path program 1 times [2021-06-11 09:22:04,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:22:04,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859743516] [2021-06-11 09:22:04,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:22:04,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:22:04,058 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:22:04,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:22:04,060 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:22:04,061 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:22:04,061 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:22:04,061 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-06-11 09:22:04,061 WARN L342 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:22:04,061 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2021-06-11 09:22:04,074 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:22:04,074 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 09:22:04,075 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:22:04,075 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:22:04,075 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:22:04,075 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:22:04,075 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:22:04,075 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:22:04,075 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:22:04,075 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:22:04,075 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 66 places, 41 transitions, 274 flow [2021-06-11 09:22:04,079 INFO L129 PetriNetUnfolder]: 0/77 cut-off events. [2021-06-11 09:22:04,079 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:04,079 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. [2021-06-11 09:22:04,079 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 41 transitions, 274 flow [2021-06-11 09:22:04,080 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 64 places, 39 transitions, 270 flow [2021-06-11 09:22:04,080 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:04,080 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 64 places, 39 transitions, 270 flow [2021-06-11 09:22:04,080 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 64 places, 39 transitions, 270 flow [2021-06-11 09:22:04,080 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 64 places, 39 transitions, 270 flow [2021-06-11 09:22:04,083 INFO L129 PetriNetUnfolder]: 0/51 cut-off events. [2021-06-11 09:22:04,083 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:04,083 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. [2021-06-11 09:22:04,083 INFO L151 LiptonReduction]: Number of co-enabled transitions 888 [2021-06-11 09:22:04,362 INFO L163 LiptonReduction]: Checked pairs total: 354 [2021-06-11 09:22:04,362 INFO L165 LiptonReduction]: Total number of compositions: 12 [2021-06-11 09:22:04,362 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 282 [2021-06-11 09:22:04,363 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-06-11 09:22:04,363 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:04,363 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:22:04,363 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-06-11 09:22:04,363 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:22:04,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:22:04,363 INFO L82 PathProgramCache]: Analyzing trace with hash 12579, now seen corresponding path program 1 times [2021-06-11 09:22:04,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:22:04,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889266239] [2021-06-11 09:22:04,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:22:04,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:22:04,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:22:04,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:22:04,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:22:04,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889266239] [2021-06-11 09:22:04,375 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:22:04,375 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 09:22:04,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734385024] [2021-06-11 09:22:04,376 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:22:04,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:22:04,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:22:04,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:22:04,376 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 53 [2021-06-11 09:22:04,376 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) [2021-06-11 09:22:04,376 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:22:04,377 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 53 [2021-06-11 09:22:04,377 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:22:04,379 INFO L129 PetriNetUnfolder]: 0/26 cut-off events. [2021-06-11 09:22:04,379 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:04,379 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. [2021-06-11 09:22:04,379 INFO L132 encePairwiseOnDemand]: 51/53 looper letters, 0 selfloop transitions, 1 changer transitions 0/26 dead transitions. [2021-06-11 09:22:04,379 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 26 transitions, 246 flow [2021-06-11 09:22:04,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:22:04,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:22:04,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 152 transitions. [2021-06-11 09:22:04,380 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9559748427672956 [2021-06-11 09:22:04,380 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 152 transitions. [2021-06-11 09:22:04,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 152 transitions. [2021-06-11 09:22:04,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:22:04,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 152 transitions. [2021-06-11 09:22:04,380 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) [2021-06-11 09:22:04,381 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) [2021-06-11 09:22:04,381 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) [2021-06-11 09:22:04,381 INFO L185 Difference]: Start difference. First operand has 52 places, 27 transitions, 246 flow. Second operand 3 states and 152 transitions. [2021-06-11 09:22:04,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 26 transitions, 246 flow [2021-06-11 09:22:04,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 26 transitions, 114 flow, removed 66 selfloop flow, removed 0 redundant places. [2021-06-11 09:22:04,382 INFO L241 Difference]: Finished difference. Result has 53 places, 26 transitions, 114 flow [2021-06-11 09:22:04,382 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} [2021-06-11 09:22:04,384 INFO L343 CegarLoopForPetriNet]: 52 programPoint places, 1 predicate places. [2021-06-11 09:22:04,384 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:04,384 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 53 places, 26 transitions, 114 flow [2021-06-11 09:22:04,384 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 53 places, 26 transitions, 114 flow [2021-06-11 09:22:04,384 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 53 places, 26 transitions, 114 flow [2021-06-11 09:22:04,388 INFO L129 PetriNetUnfolder]: 0/26 cut-off events. [2021-06-11 09:22:04,388 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:04,388 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. [2021-06-11 09:22:04,388 INFO L151 LiptonReduction]: Number of co-enabled transitions 288 [2021-06-11 09:22:04,390 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:22:04,390 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:22:04,390 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 6 [2021-06-11 09:22:04,391 INFO L480 AbstractCegarLoop]: Abstraction has has 53 places, 26 transitions, 114 flow [2021-06-11 09:22:04,391 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) [2021-06-11 09:22:04,391 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:22:04,391 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 09:22:04,391 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-06-11 09:22:04,391 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:22:04,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:22:04,391 INFO L82 PathProgramCache]: Analyzing trace with hash 1127292090, now seen corresponding path program 1 times [2021-06-11 09:22:04,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:22:04,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015712547] [2021-06-11 09:22:04,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:22:04,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:22:04,407 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:22:04,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:22:04,409 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:22:04,410 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:22:04,410 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:22:04,410 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-06-11 09:22:04,410 WARN L342 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:22:04,410 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2021-06-11 09:22:04,426 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:22:04,426 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 09:22:04,427 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:22:04,427 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:22:04,427 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:22:04,427 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:22:04,427 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:22:04,427 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:22:04,427 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:22:04,427 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:22:04,429 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 71 places, 44 transitions, 309 flow [2021-06-11 09:22:04,433 INFO L129 PetriNetUnfolder]: 0/83 cut-off events. [2021-06-11 09:22:04,433 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:04,433 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. [2021-06-11 09:22:04,433 INFO L82 GeneralOperation]: Start removeDead. Operand has 71 places, 44 transitions, 309 flow [2021-06-11 09:22:04,435 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 42 transitions, 305 flow [2021-06-11 09:22:04,435 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:04,435 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 42 transitions, 305 flow [2021-06-11 09:22:04,436 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 42 transitions, 305 flow [2021-06-11 09:22:04,436 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 69 places, 42 transitions, 305 flow [2021-06-11 09:22:04,440 INFO L129 PetriNetUnfolder]: 0/55 cut-off events. [2021-06-11 09:22:04,440 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:04,440 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. [2021-06-11 09:22:04,441 INFO L151 LiptonReduction]: Number of co-enabled transitions 1040 [2021-06-11 09:22:04,743 INFO L163 LiptonReduction]: Checked pairs total: 416 [2021-06-11 09:22:04,743 INFO L165 LiptonReduction]: Total number of compositions: 13 [2021-06-11 09:22:04,743 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 308 [2021-06-11 09:22:04,745 INFO L129 PetriNetUnfolder]: 0/1 cut-off events. [2021-06-11 09:22:04,745 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:04,745 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:22:04,745 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-06-11 09:22:04,745 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:22:04,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:22:04,745 INFO L82 PathProgramCache]: Analyzing trace with hash 14371, now seen corresponding path program 1 times [2021-06-11 09:22:04,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:22:04,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553047594] [2021-06-11 09:22:04,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:22:04,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:22:04,755 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:22:04,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:22:04,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:22:04,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553047594] [2021-06-11 09:22:04,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:22:04,759 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 09:22:04,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704345634] [2021-06-11 09:22:04,759 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:22:04,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:22:04,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:22:04,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:22:04,760 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 57 [2021-06-11 09:22:04,760 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) [2021-06-11 09:22:04,760 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:22:04,760 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 57 [2021-06-11 09:22:04,760 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:22:04,765 INFO L129 PetriNetUnfolder]: 0/28 cut-off events. [2021-06-11 09:22:04,765 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:04,765 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. [2021-06-11 09:22:04,766 INFO L132 encePairwiseOnDemand]: 55/57 looper letters, 0 selfloop transitions, 1 changer transitions 0/28 dead transitions. [2021-06-11 09:22:04,766 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 28 transitions, 279 flow [2021-06-11 09:22:04,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:22:04,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:22:04,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 164 transitions. [2021-06-11 09:22:04,766 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9590643274853801 [2021-06-11 09:22:04,766 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 164 transitions. [2021-06-11 09:22:04,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 164 transitions. [2021-06-11 09:22:04,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:22:04,767 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 164 transitions. [2021-06-11 09:22:04,767 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) [2021-06-11 09:22:04,767 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) [2021-06-11 09:22:04,768 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) [2021-06-11 09:22:04,768 INFO L185 Difference]: Start difference. First operand has 56 places, 29 transitions, 279 flow. Second operand 3 states and 164 transitions. [2021-06-11 09:22:04,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 28 transitions, 279 flow [2021-06-11 09:22:04,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 28 transitions, 123 flow, removed 78 selfloop flow, removed 0 redundant places. [2021-06-11 09:22:04,770 INFO L241 Difference]: Finished difference. Result has 57 places, 28 transitions, 123 flow [2021-06-11 09:22:04,771 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} [2021-06-11 09:22:04,771 INFO L343 CegarLoopForPetriNet]: 56 programPoint places, 1 predicate places. [2021-06-11 09:22:04,771 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:04,772 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 57 places, 28 transitions, 123 flow [2021-06-11 09:22:04,772 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 57 places, 28 transitions, 123 flow [2021-06-11 09:22:04,772 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 57 places, 28 transitions, 123 flow [2021-06-11 09:22:04,774 INFO L129 PetriNetUnfolder]: 0/28 cut-off events. [2021-06-11 09:22:04,775 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:04,775 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. [2021-06-11 09:22:04,775 INFO L151 LiptonReduction]: Number of co-enabled transitions 338 [2021-06-11 09:22:04,776 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:22:04,776 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:22:04,776 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 5 [2021-06-11 09:22:04,777 INFO L480 AbstractCegarLoop]: Abstraction has has 57 places, 28 transitions, 123 flow [2021-06-11 09:22:04,777 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) [2021-06-11 09:22:04,777 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:22:04,777 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 09:22:04,777 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-06-11 09:22:04,777 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:22:04,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:22:04,777 INFO L82 PathProgramCache]: Analyzing trace with hash 1451810459, now seen corresponding path program 1 times [2021-06-11 09:22:04,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:22:04,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207099246] [2021-06-11 09:22:04,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:22:04,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:22:04,781 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:22:04,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:22:04,789 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:22:04,792 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:22:04,792 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:22:04,792 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-06-11 09:22:04,793 WARN L342 ceAbstractionStarter]: 13 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:22:04,793 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 14 thread instances. [2021-06-11 09:22:04,812 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:22:04,812 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 09:22:04,813 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:22:04,813 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:22:04,813 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:22:04,813 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:22:04,813 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:22:04,813 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:22:04,813 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:22:04,813 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:22:04,814 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 76 places, 47 transitions, 346 flow [2021-06-11 09:22:04,819 INFO L129 PetriNetUnfolder]: 0/89 cut-off events. [2021-06-11 09:22:04,820 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:04,820 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. [2021-06-11 09:22:04,820 INFO L82 GeneralOperation]: Start removeDead. Operand has 76 places, 47 transitions, 346 flow [2021-06-11 09:22:04,820 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 74 places, 45 transitions, 342 flow [2021-06-11 09:22:04,820 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:04,820 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 74 places, 45 transitions, 342 flow [2021-06-11 09:22:04,821 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 74 places, 45 transitions, 342 flow [2021-06-11 09:22:04,821 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 74 places, 45 transitions, 342 flow [2021-06-11 09:22:04,826 INFO L129 PetriNetUnfolder]: 0/59 cut-off events. [2021-06-11 09:22:04,826 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:04,827 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. [2021-06-11 09:22:04,827 INFO L151 LiptonReduction]: Number of co-enabled transitions 1204 [2021-06-11 09:22:05,201 INFO L163 LiptonReduction]: Checked pairs total: 483 [2021-06-11 09:22:05,201 INFO L165 LiptonReduction]: Total number of compositions: 14 [2021-06-11 09:22:05,202 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 382 [2021-06-11 09:22:05,202 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-06-11 09:22:05,202 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:05,202 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:22:05,202 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-06-11 09:22:05,203 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:22:05,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:22:05,203 INFO L82 PathProgramCache]: Analyzing trace with hash 16291, now seen corresponding path program 1 times [2021-06-11 09:22:05,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:22:05,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492866408] [2021-06-11 09:22:05,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:22:05,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:22:05,207 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:22:05,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:22:05,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:22:05,209 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492866408] [2021-06-11 09:22:05,209 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:22:05,209 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 09:22:05,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540036346] [2021-06-11 09:22:05,209 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:22:05,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:22:05,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:22:05,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:22:05,210 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 61 [2021-06-11 09:22:05,210 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) [2021-06-11 09:22:05,210 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:22:05,210 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 61 [2021-06-11 09:22:05,210 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:22:05,214 INFO L129 PetriNetUnfolder]: 0/30 cut-off events. [2021-06-11 09:22:05,214 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:05,214 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. [2021-06-11 09:22:05,214 INFO L132 encePairwiseOnDemand]: 59/61 looper letters, 0 selfloop transitions, 1 changer transitions 0/30 dead transitions. [2021-06-11 09:22:05,214 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 30 transitions, 314 flow [2021-06-11 09:22:05,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:22:05,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:22:05,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 176 transitions. [2021-06-11 09:22:05,215 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9617486338797814 [2021-06-11 09:22:05,215 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 176 transitions. [2021-06-11 09:22:05,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 176 transitions. [2021-06-11 09:22:05,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:22:05,215 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 176 transitions. [2021-06-11 09:22:05,215 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) [2021-06-11 09:22:05,216 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) [2021-06-11 09:22:05,216 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) [2021-06-11 09:22:05,216 INFO L185 Difference]: Start difference. First operand has 60 places, 31 transitions, 314 flow. Second operand 3 states and 176 transitions. [2021-06-11 09:22:05,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 30 transitions, 314 flow [2021-06-11 09:22:05,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 30 transitions, 132 flow, removed 91 selfloop flow, removed 0 redundant places. [2021-06-11 09:22:05,218 INFO L241 Difference]: Finished difference. Result has 61 places, 30 transitions, 132 flow [2021-06-11 09:22:05,218 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} [2021-06-11 09:22:05,218 INFO L343 CegarLoopForPetriNet]: 60 programPoint places, 1 predicate places. [2021-06-11 09:22:05,218 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:05,218 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 30 transitions, 132 flow [2021-06-11 09:22:05,218 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 61 places, 30 transitions, 132 flow [2021-06-11 09:22:05,218 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 61 places, 30 transitions, 132 flow [2021-06-11 09:22:05,221 INFO L129 PetriNetUnfolder]: 0/30 cut-off events. [2021-06-11 09:22:05,221 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:05,221 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. [2021-06-11 09:22:05,221 INFO L151 LiptonReduction]: Number of co-enabled transitions 392 [2021-06-11 09:22:05,222 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:22:05,222 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:22:05,222 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 4 [2021-06-11 09:22:05,223 INFO L480 AbstractCegarLoop]: Abstraction has has 61 places, 30 transitions, 132 flow [2021-06-11 09:22:05,223 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) [2021-06-11 09:22:05,223 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:22:05,223 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 09:22:05,223 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-06-11 09:22:05,223 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:22:05,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:22:05,224 INFO L82 PathProgramCache]: Analyzing trace with hash -138593667, now seen corresponding path program 1 times [2021-06-11 09:22:05,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:22:05,224 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415550372] [2021-06-11 09:22:05,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:22:05,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:22:05,227 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:22:05,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:22:05,228 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:22:05,230 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:22:05,230 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:22:05,230 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-06-11 09:22:05,230 WARN L342 ceAbstractionStarter]: 14 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:22:05,230 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 15 thread instances. [2021-06-11 09:22:05,243 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:22:05,243 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 09:22:05,244 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:22:05,244 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:22:05,244 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:22:05,244 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:22:05,244 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:22:05,244 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:22:05,244 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:22:05,244 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:22:05,245 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 81 places, 50 transitions, 385 flow [2021-06-11 09:22:05,250 INFO L129 PetriNetUnfolder]: 0/95 cut-off events. [2021-06-11 09:22:05,250 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:05,250 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. [2021-06-11 09:22:05,250 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 50 transitions, 385 flow [2021-06-11 09:22:05,251 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 48 transitions, 381 flow [2021-06-11 09:22:05,251 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:05,251 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 48 transitions, 381 flow [2021-06-11 09:22:05,251 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 79 places, 48 transitions, 381 flow [2021-06-11 09:22:05,251 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 79 places, 48 transitions, 381 flow [2021-06-11 09:22:05,255 INFO L129 PetriNetUnfolder]: 0/63 cut-off events. [2021-06-11 09:22:05,255 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:05,255 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. [2021-06-11 09:22:05,256 INFO L151 LiptonReduction]: Number of co-enabled transitions 1380 [2021-06-11 09:22:05,566 INFO L163 LiptonReduction]: Checked pairs total: 555 [2021-06-11 09:22:05,566 INFO L165 LiptonReduction]: Total number of compositions: 15 [2021-06-11 09:22:05,566 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 315 [2021-06-11 09:22:05,567 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-06-11 09:22:05,567 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:05,567 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:22:05,567 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-06-11 09:22:05,567 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:22:05,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:22:05,567 INFO L82 PathProgramCache]: Analyzing trace with hash 18339, now seen corresponding path program 1 times [2021-06-11 09:22:05,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:22:05,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788785674] [2021-06-11 09:22:05,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:22:05,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:22:05,572 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:22:05,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:22:05,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:22:05,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788785674] [2021-06-11 09:22:05,575 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:22:05,575 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 09:22:05,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136414172] [2021-06-11 09:22:05,575 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:22:05,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:22:05,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:22:05,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:22:05,576 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 65 [2021-06-11 09:22:05,576 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) [2021-06-11 09:22:05,576 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:22:05,576 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 65 [2021-06-11 09:22:05,576 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:22:05,580 INFO L129 PetriNetUnfolder]: 0/32 cut-off events. [2021-06-11 09:22:05,580 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:05,580 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. [2021-06-11 09:22:05,580 INFO L132 encePairwiseOnDemand]: 63/65 looper letters, 0 selfloop transitions, 1 changer transitions 0/32 dead transitions. [2021-06-11 09:22:05,580 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 32 transitions, 351 flow [2021-06-11 09:22:05,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:22:05,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:22:05,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 188 transitions. [2021-06-11 09:22:05,581 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9641025641025641 [2021-06-11 09:22:05,581 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 188 transitions. [2021-06-11 09:22:05,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 188 transitions. [2021-06-11 09:22:05,581 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:22:05,581 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 188 transitions. [2021-06-11 09:22:05,581 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) [2021-06-11 09:22:05,581 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) [2021-06-11 09:22:05,581 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) [2021-06-11 09:22:05,582 INFO L185 Difference]: Start difference. First operand has 64 places, 33 transitions, 351 flow. Second operand 3 states and 188 transitions. [2021-06-11 09:22:05,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 32 transitions, 351 flow [2021-06-11 09:22:05,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 32 transitions, 141 flow, removed 105 selfloop flow, removed 0 redundant places. [2021-06-11 09:22:05,583 INFO L241 Difference]: Finished difference. Result has 65 places, 32 transitions, 141 flow [2021-06-11 09:22:05,583 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} [2021-06-11 09:22:05,583 INFO L343 CegarLoopForPetriNet]: 64 programPoint places, 1 predicate places. [2021-06-11 09:22:05,584 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:05,584 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 65 places, 32 transitions, 141 flow [2021-06-11 09:22:05,584 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 65 places, 32 transitions, 141 flow [2021-06-11 09:22:05,584 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 65 places, 32 transitions, 141 flow [2021-06-11 09:22:05,586 INFO L129 PetriNetUnfolder]: 0/32 cut-off events. [2021-06-11 09:22:05,586 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:05,586 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. [2021-06-11 09:22:05,586 INFO L151 LiptonReduction]: Number of co-enabled transitions 450 [2021-06-11 09:22:05,588 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:22:05,588 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:22:05,588 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 4 [2021-06-11 09:22:05,588 INFO L480 AbstractCegarLoop]: Abstraction has has 65 places, 32 transitions, 141 flow [2021-06-11 09:22:05,588 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) [2021-06-11 09:22:05,588 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:22:05,588 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 09:22:05,588 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-06-11 09:22:05,589 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:22:05,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:22:05,589 INFO L82 PathProgramCache]: Analyzing trace with hash -1465640138, now seen corresponding path program 1 times [2021-06-11 09:22:05,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:22:05,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796129076] [2021-06-11 09:22:05,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:22:05,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:22:05,592 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:22:05,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:22:05,593 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:22:05,594 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:22:05,595 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:22:05,595 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-06-11 09:22:05,595 WARN L342 ceAbstractionStarter]: 15 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:22:05,595 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 16 thread instances. [2021-06-11 09:22:05,611 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:22:05,611 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 09:22:05,611 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:22:05,611 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:22:05,611 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:22:05,611 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:22:05,611 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:22:05,612 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:22:05,612 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:22:05,612 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:22:05,612 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 86 places, 53 transitions, 426 flow [2021-06-11 09:22:05,617 INFO L129 PetriNetUnfolder]: 0/101 cut-off events. [2021-06-11 09:22:05,617 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:05,618 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. [2021-06-11 09:22:05,618 INFO L82 GeneralOperation]: Start removeDead. Operand has 86 places, 53 transitions, 426 flow [2021-06-11 09:22:05,618 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 51 transitions, 422 flow [2021-06-11 09:22:05,618 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:05,618 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 51 transitions, 422 flow [2021-06-11 09:22:05,618 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 51 transitions, 422 flow [2021-06-11 09:22:05,619 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 84 places, 51 transitions, 422 flow [2021-06-11 09:22:05,622 INFO L129 PetriNetUnfolder]: 0/67 cut-off events. [2021-06-11 09:22:05,622 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:05,622 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. [2021-06-11 09:22:05,623 INFO L151 LiptonReduction]: Number of co-enabled transitions 1568 [2021-06-11 09:22:05,996 INFO L163 LiptonReduction]: Checked pairs total: 632 [2021-06-11 09:22:05,996 INFO L165 LiptonReduction]: Total number of compositions: 16 [2021-06-11 09:22:05,996 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 378 [2021-06-11 09:22:05,998 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-06-11 09:22:05,998 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:05,998 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:22:05,998 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-06-11 09:22:05,998 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:22:05,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:22:05,998 INFO L82 PathProgramCache]: Analyzing trace with hash 20515, now seen corresponding path program 1 times [2021-06-11 09:22:05,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:22:05,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768341207] [2021-06-11 09:22:05,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:22:06,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:22:06,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:22:06,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:22:06,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:22:06,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768341207] [2021-06-11 09:22:06,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:22:06,006 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 09:22:06,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301831838] [2021-06-11 09:22:06,006 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:22:06,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:22:06,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:22:06,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:22:06,007 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 69 [2021-06-11 09:22:06,008 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) [2021-06-11 09:22:06,008 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:22:06,008 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 69 [2021-06-11 09:22:06,008 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:22:06,012 INFO L129 PetriNetUnfolder]: 0/34 cut-off events. [2021-06-11 09:22:06,012 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:06,012 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. [2021-06-11 09:22:06,013 INFO L132 encePairwiseOnDemand]: 67/69 looper letters, 0 selfloop transitions, 1 changer transitions 0/34 dead transitions. [2021-06-11 09:22:06,013 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 34 transitions, 390 flow [2021-06-11 09:22:06,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:22:06,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:22:06,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 200 transitions. [2021-06-11 09:22:06,013 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.966183574879227 [2021-06-11 09:22:06,013 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 200 transitions. [2021-06-11 09:22:06,013 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 200 transitions. [2021-06-11 09:22:06,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:22:06,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 200 transitions. [2021-06-11 09:22:06,014 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) [2021-06-11 09:22:06,014 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) [2021-06-11 09:22:06,014 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) [2021-06-11 09:22:06,014 INFO L185 Difference]: Start difference. First operand has 68 places, 35 transitions, 390 flow. Second operand 3 states and 200 transitions. [2021-06-11 09:22:06,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 34 transitions, 390 flow [2021-06-11 09:22:06,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 34 transitions, 150 flow, removed 120 selfloop flow, removed 0 redundant places. [2021-06-11 09:22:06,018 INFO L241 Difference]: Finished difference. Result has 69 places, 34 transitions, 150 flow [2021-06-11 09:22:06,018 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} [2021-06-11 09:22:06,018 INFO L343 CegarLoopForPetriNet]: 68 programPoint places, 1 predicate places. [2021-06-11 09:22:06,018 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:06,018 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 34 transitions, 150 flow [2021-06-11 09:22:06,018 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 34 transitions, 150 flow [2021-06-11 09:22:06,019 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 69 places, 34 transitions, 150 flow [2021-06-11 09:22:06,023 INFO L129 PetriNetUnfolder]: 0/34 cut-off events. [2021-06-11 09:22:06,023 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:06,023 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. [2021-06-11 09:22:06,023 INFO L151 LiptonReduction]: Number of co-enabled transitions 512 [2021-06-11 09:22:06,025 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:22:06,025 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:22:06,025 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 7 [2021-06-11 09:22:06,025 INFO L480 AbstractCegarLoop]: Abstraction has has 69 places, 34 transitions, 150 flow [2021-06-11 09:22:06,026 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) [2021-06-11 09:22:06,026 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:22:06,026 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 09:22:06,026 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-06-11 09:22:06,026 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:22:06,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:22:06,026 INFO L82 PathProgramCache]: Analyzing trace with hash 1833507392, now seen corresponding path program 1 times [2021-06-11 09:22:06,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:22:06,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579044980] [2021-06-11 09:22:06,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:22:06,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:22:06,032 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:22:06,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:22:06,035 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:22:06,038 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:22:06,039 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:22:06,039 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-06-11 09:22:06,039 WARN L342 ceAbstractionStarter]: 16 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:22:06,039 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 17 thread instances. [2021-06-11 09:22:06,051 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:22:06,051 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 09:22:06,051 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:22:06,051 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:22:06,051 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:22:06,051 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:22:06,051 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:22:06,051 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:22:06,051 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:22:06,051 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:22:06,052 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 91 places, 56 transitions, 469 flow [2021-06-11 09:22:06,057 INFO L129 PetriNetUnfolder]: 0/107 cut-off events. [2021-06-11 09:22:06,057 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:06,057 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. [2021-06-11 09:22:06,057 INFO L82 GeneralOperation]: Start removeDead. Operand has 91 places, 56 transitions, 469 flow [2021-06-11 09:22:06,058 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 89 places, 54 transitions, 465 flow [2021-06-11 09:22:06,058 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:06,058 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 89 places, 54 transitions, 465 flow [2021-06-11 09:22:06,058 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 89 places, 54 transitions, 465 flow [2021-06-11 09:22:06,058 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 89 places, 54 transitions, 465 flow [2021-06-11 09:22:06,062 INFO L129 PetriNetUnfolder]: 0/71 cut-off events. [2021-06-11 09:22:06,062 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:06,062 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. [2021-06-11 09:22:06,063 INFO L151 LiptonReduction]: Number of co-enabled transitions 1768 [2021-06-11 09:22:06,496 INFO L163 LiptonReduction]: Checked pairs total: 714 [2021-06-11 09:22:06,496 INFO L165 LiptonReduction]: Total number of compositions: 17 [2021-06-11 09:22:06,496 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 438 [2021-06-11 09:22:06,497 INFO L129 PetriNetUnfolder]: 0/1 cut-off events. [2021-06-11 09:22:06,497 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:06,497 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:22:06,497 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-06-11 09:22:06,497 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:22:06,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:22:06,497 INFO L82 PathProgramCache]: Analyzing trace with hash 22819, now seen corresponding path program 1 times [2021-06-11 09:22:06,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:22:06,497 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268646494] [2021-06-11 09:22:06,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:22:06,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:22:06,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:22:06,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:22:06,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:22:06,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268646494] [2021-06-11 09:22:06,503 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:22:06,503 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 09:22:06,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775234533] [2021-06-11 09:22:06,504 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:22:06,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:22:06,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:22:06,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:22:06,504 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 73 [2021-06-11 09:22:06,504 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) [2021-06-11 09:22:06,504 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:22:06,504 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 73 [2021-06-11 09:22:06,504 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:22:06,509 INFO L129 PetriNetUnfolder]: 0/36 cut-off events. [2021-06-11 09:22:06,509 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:06,509 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. [2021-06-11 09:22:06,510 INFO L132 encePairwiseOnDemand]: 71/73 looper letters, 0 selfloop transitions, 1 changer transitions 0/36 dead transitions. [2021-06-11 09:22:06,510 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 36 transitions, 431 flow [2021-06-11 09:22:06,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:22:06,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:22:06,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 212 transitions. [2021-06-11 09:22:06,510 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9680365296803652 [2021-06-11 09:22:06,510 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 212 transitions. [2021-06-11 09:22:06,510 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 212 transitions. [2021-06-11 09:22:06,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:22:06,511 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 212 transitions. [2021-06-11 09:22:06,511 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) [2021-06-11 09:22:06,511 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) [2021-06-11 09:22:06,511 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) [2021-06-11 09:22:06,511 INFO L185 Difference]: Start difference. First operand has 72 places, 37 transitions, 431 flow. Second operand 3 states and 212 transitions. [2021-06-11 09:22:06,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 36 transitions, 431 flow [2021-06-11 09:22:06,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 36 transitions, 159 flow, removed 136 selfloop flow, removed 0 redundant places. [2021-06-11 09:22:06,513 INFO L241 Difference]: Finished difference. Result has 73 places, 36 transitions, 159 flow [2021-06-11 09:22:06,513 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} [2021-06-11 09:22:06,513 INFO L343 CegarLoopForPetriNet]: 72 programPoint places, 1 predicate places. [2021-06-11 09:22:06,513 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:06,513 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 73 places, 36 transitions, 159 flow [2021-06-11 09:22:06,514 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 73 places, 36 transitions, 159 flow [2021-06-11 09:22:06,514 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 73 places, 36 transitions, 159 flow [2021-06-11 09:22:06,516 INFO L129 PetriNetUnfolder]: 0/36 cut-off events. [2021-06-11 09:22:06,516 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:06,516 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. [2021-06-11 09:22:06,516 INFO L151 LiptonReduction]: Number of co-enabled transitions 578 [2021-06-11 09:22:06,518 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:22:06,518 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:22:06,518 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 5 [2021-06-11 09:22:06,518 INFO L480 AbstractCegarLoop]: Abstraction has has 73 places, 36 transitions, 159 flow [2021-06-11 09:22:06,519 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) [2021-06-11 09:22:06,519 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:22:06,519 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 09:22:06,519 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-06-11 09:22:06,519 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:22:06,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:22:06,519 INFO L82 PathProgramCache]: Analyzing trace with hash 825672673, now seen corresponding path program 1 times [2021-06-11 09:22:06,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:22:06,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839490689] [2021-06-11 09:22:06,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:22:06,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:22:06,523 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:22:06,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:22:06,530 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:22:06,538 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:22:06,539 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:22:06,539 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-06-11 09:22:06,539 WARN L342 ceAbstractionStarter]: 17 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:22:06,539 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 18 thread instances. [2021-06-11 09:22:06,555 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:22:06,555 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 09:22:06,556 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:22:06,556 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:22:06,556 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:22:06,556 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:22:06,556 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:22:06,556 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:22:06,556 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:22:06,556 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:22:06,556 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 96 places, 59 transitions, 514 flow [2021-06-11 09:22:06,562 INFO L129 PetriNetUnfolder]: 0/113 cut-off events. [2021-06-11 09:22:06,562 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:06,562 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. [2021-06-11 09:22:06,562 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 59 transitions, 514 flow [2021-06-11 09:22:06,563 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 94 places, 57 transitions, 510 flow [2021-06-11 09:22:06,563 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:06,564 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 94 places, 57 transitions, 510 flow [2021-06-11 09:22:06,564 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 94 places, 57 transitions, 510 flow [2021-06-11 09:22:06,564 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 94 places, 57 transitions, 510 flow [2021-06-11 09:22:06,568 INFO L129 PetriNetUnfolder]: 0/75 cut-off events. [2021-06-11 09:22:06,568 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:06,568 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. [2021-06-11 09:22:06,570 INFO L151 LiptonReduction]: Number of co-enabled transitions 1980 [2021-06-11 09:22:07,066 INFO L163 LiptonReduction]: Checked pairs total: 801 [2021-06-11 09:22:07,067 INFO L165 LiptonReduction]: Total number of compositions: 18 [2021-06-11 09:22:07,067 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 504 [2021-06-11 09:22:07,067 INFO L129 PetriNetUnfolder]: 0/1 cut-off events. [2021-06-11 09:22:07,067 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:07,067 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:22:07,067 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-06-11 09:22:07,067 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:22:07,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:22:07,068 INFO L82 PathProgramCache]: Analyzing trace with hash 25251, now seen corresponding path program 1 times [2021-06-11 09:22:07,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:22:07,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661664628] [2021-06-11 09:22:07,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:22:07,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:22:07,071 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:22:07,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:22:07,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:22:07,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661664628] [2021-06-11 09:22:07,073 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:22:07,073 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 09:22:07,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96278001] [2021-06-11 09:22:07,073 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:22:07,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:22:07,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:22:07,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:22:07,074 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 77 [2021-06-11 09:22:07,074 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) [2021-06-11 09:22:07,074 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:22:07,074 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 77 [2021-06-11 09:22:07,074 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:22:07,078 INFO L129 PetriNetUnfolder]: 0/38 cut-off events. [2021-06-11 09:22:07,078 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:07,078 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. [2021-06-11 09:22:07,078 INFO L132 encePairwiseOnDemand]: 75/77 looper letters, 0 selfloop transitions, 1 changer transitions 0/38 dead transitions. [2021-06-11 09:22:07,078 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 38 transitions, 474 flow [2021-06-11 09:22:07,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:22:07,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:22:07,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 224 transitions. [2021-06-11 09:22:07,079 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9696969696969697 [2021-06-11 09:22:07,079 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 224 transitions. [2021-06-11 09:22:07,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 224 transitions. [2021-06-11 09:22:07,079 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:22:07,079 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 224 transitions. [2021-06-11 09:22:07,079 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) [2021-06-11 09:22:07,080 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) [2021-06-11 09:22:07,080 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) [2021-06-11 09:22:07,080 INFO L185 Difference]: Start difference. First operand has 76 places, 39 transitions, 474 flow. Second operand 3 states and 224 transitions. [2021-06-11 09:22:07,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 38 transitions, 474 flow [2021-06-11 09:22:07,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 38 transitions, 168 flow, removed 153 selfloop flow, removed 0 redundant places. [2021-06-11 09:22:07,082 INFO L241 Difference]: Finished difference. Result has 77 places, 38 transitions, 168 flow [2021-06-11 09:22:07,082 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} [2021-06-11 09:22:07,082 INFO L343 CegarLoopForPetriNet]: 76 programPoint places, 1 predicate places. [2021-06-11 09:22:07,082 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:07,082 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 38 transitions, 168 flow [2021-06-11 09:22:07,082 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 38 transitions, 168 flow [2021-06-11 09:22:07,083 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 77 places, 38 transitions, 168 flow [2021-06-11 09:22:07,085 INFO L129 PetriNetUnfolder]: 0/38 cut-off events. [2021-06-11 09:22:07,085 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:07,085 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. [2021-06-11 09:22:07,085 INFO L151 LiptonReduction]: Number of co-enabled transitions 648 [2021-06-11 09:22:07,087 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:22:07,087 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:22:07,087 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 5 [2021-06-11 09:22:07,087 INFO L480 AbstractCegarLoop]: Abstraction has has 77 places, 38 transitions, 168 flow [2021-06-11 09:22:07,087 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) [2021-06-11 09:22:07,088 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:22:07,088 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] [2021-06-11 09:22:07,088 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-06-11 09:22:07,088 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:22:07,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:22:07,088 INFO L82 PathProgramCache]: Analyzing trace with hash 334217731, now seen corresponding path program 1 times [2021-06-11 09:22:07,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:22:07,088 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284205648] [2021-06-11 09:22:07,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:22:07,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:22:07,091 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:22:07,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:22:07,092 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:22:07,093 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:22:07,093 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:22:07,093 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-06-11 09:22:07,094 WARN L342 ceAbstractionStarter]: 18 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:22:07,094 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 19 thread instances. [2021-06-11 09:22:07,110 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:22:07,110 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 09:22:07,110 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:22:07,110 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:22:07,110 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:22:07,111 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:22:07,111 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:22:07,111 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:22:07,111 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:22:07,111 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:22:07,111 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 101 places, 62 transitions, 561 flow [2021-06-11 09:22:07,117 INFO L129 PetriNetUnfolder]: 0/119 cut-off events. [2021-06-11 09:22:07,117 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:07,117 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. [2021-06-11 09:22:07,117 INFO L82 GeneralOperation]: Start removeDead. Operand has 101 places, 62 transitions, 561 flow [2021-06-11 09:22:07,118 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 99 places, 60 transitions, 557 flow [2021-06-11 09:22:07,118 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:07,118 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 99 places, 60 transitions, 557 flow [2021-06-11 09:22:07,118 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 99 places, 60 transitions, 557 flow [2021-06-11 09:22:07,118 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 99 places, 60 transitions, 557 flow [2021-06-11 09:22:07,123 INFO L129 PetriNetUnfolder]: 0/79 cut-off events. [2021-06-11 09:22:07,123 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:07,123 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. [2021-06-11 09:22:07,124 INFO L151 LiptonReduction]: Number of co-enabled transitions 2204 [2021-06-11 09:22:07,628 INFO L163 LiptonReduction]: Checked pairs total: 893 [2021-06-11 09:22:07,628 INFO L165 LiptonReduction]: Total number of compositions: 19 [2021-06-11 09:22:07,628 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 510 [2021-06-11 09:22:07,629 INFO L129 PetriNetUnfolder]: 0/1 cut-off events. [2021-06-11 09:22:07,629 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:07,629 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:22:07,629 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-06-11 09:22:07,629 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:22:07,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:22:07,629 INFO L82 PathProgramCache]: Analyzing trace with hash 27811, now seen corresponding path program 1 times [2021-06-11 09:22:07,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:22:07,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252758020] [2021-06-11 09:22:07,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:22:07,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:22:07,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:22:07,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:22:07,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:22:07,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252758020] [2021-06-11 09:22:07,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:22:07,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 09:22:07,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667734932] [2021-06-11 09:22:07,635 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:22:07,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:22:07,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:22:07,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:22:07,636 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 81 [2021-06-11 09:22:07,636 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) [2021-06-11 09:22:07,636 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:22:07,636 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 81 [2021-06-11 09:22:07,636 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:22:07,639 INFO L129 PetriNetUnfolder]: 0/40 cut-off events. [2021-06-11 09:22:07,640 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:07,640 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. [2021-06-11 09:22:07,640 INFO L132 encePairwiseOnDemand]: 79/81 looper letters, 0 selfloop transitions, 1 changer transitions 0/40 dead transitions. [2021-06-11 09:22:07,640 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 40 transitions, 519 flow [2021-06-11 09:22:07,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:22:07,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:22:07,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 236 transitions. [2021-06-11 09:22:07,640 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9711934156378601 [2021-06-11 09:22:07,640 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 236 transitions. [2021-06-11 09:22:07,640 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 236 transitions. [2021-06-11 09:22:07,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:22:07,641 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 236 transitions. [2021-06-11 09:22:07,641 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) [2021-06-11 09:22:07,641 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) [2021-06-11 09:22:07,641 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) [2021-06-11 09:22:07,641 INFO L185 Difference]: Start difference. First operand has 80 places, 41 transitions, 519 flow. Second operand 3 states and 236 transitions. [2021-06-11 09:22:07,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 40 transitions, 519 flow [2021-06-11 09:22:07,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 40 transitions, 177 flow, removed 171 selfloop flow, removed 0 redundant places. [2021-06-11 09:22:07,644 INFO L241 Difference]: Finished difference. Result has 81 places, 40 transitions, 177 flow [2021-06-11 09:22:07,644 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} [2021-06-11 09:22:07,644 INFO L343 CegarLoopForPetriNet]: 80 programPoint places, 1 predicate places. [2021-06-11 09:22:07,644 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:07,644 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 40 transitions, 177 flow [2021-06-11 09:22:07,644 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 81 places, 40 transitions, 177 flow [2021-06-11 09:22:07,645 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 81 places, 40 transitions, 177 flow [2021-06-11 09:22:07,647 INFO L129 PetriNetUnfolder]: 0/40 cut-off events. [2021-06-11 09:22:07,647 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:07,647 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. [2021-06-11 09:22:07,647 INFO L151 LiptonReduction]: Number of co-enabled transitions 722 [2021-06-11 09:22:07,649 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:22:07,649 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:22:07,649 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 5 [2021-06-11 09:22:07,650 INFO L480 AbstractCegarLoop]: Abstraction has has 81 places, 40 transitions, 177 flow [2021-06-11 09:22:07,650 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) [2021-06-11 09:22:07,650 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:22:07,650 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] [2021-06-11 09:22:07,650 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-06-11 09:22:07,650 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:22:07,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:22:07,650 INFO L82 PathProgramCache]: Analyzing trace with hash -1359261028, now seen corresponding path program 1 times [2021-06-11 09:22:07,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:22:07,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071091914] [2021-06-11 09:22:07,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:22:07,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:22:07,653 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:22:07,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:22:07,654 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:22:07,656 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:22:07,656 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:22:07,656 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-06-11 09:22:07,656 WARN L342 ceAbstractionStarter]: 19 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:22:07,656 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 20 thread instances. [2021-06-11 09:22:07,672 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:22:07,672 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 09:22:07,673 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:22:07,673 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:22:07,673 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:22:07,673 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:22:07,673 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:22:07,673 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:22:07,673 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:22:07,673 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:22:07,673 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 106 places, 65 transitions, 610 flow [2021-06-11 09:22:07,680 INFO L129 PetriNetUnfolder]: 0/125 cut-off events. [2021-06-11 09:22:07,680 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:07,680 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. [2021-06-11 09:22:07,680 INFO L82 GeneralOperation]: Start removeDead. Operand has 106 places, 65 transitions, 610 flow [2021-06-11 09:22:07,680 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 104 places, 63 transitions, 606 flow [2021-06-11 09:22:07,680 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:07,681 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 104 places, 63 transitions, 606 flow [2021-06-11 09:22:07,681 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 104 places, 63 transitions, 606 flow [2021-06-11 09:22:07,681 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 104 places, 63 transitions, 606 flow [2021-06-11 09:22:07,685 INFO L129 PetriNetUnfolder]: 0/83 cut-off events. [2021-06-11 09:22:07,686 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:07,686 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. [2021-06-11 09:22:07,687 INFO L151 LiptonReduction]: Number of co-enabled transitions 2440 [2021-06-11 09:22:08,276 INFO L163 LiptonReduction]: Checked pairs total: 990 [2021-06-11 09:22:08,276 INFO L165 LiptonReduction]: Total number of compositions: 20 [2021-06-11 09:22:08,276 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 596 [2021-06-11 09:22:08,277 INFO L129 PetriNetUnfolder]: 0/1 cut-off events. [2021-06-11 09:22:08,277 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:08,277 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:22:08,277 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-06-11 09:22:08,277 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:22:08,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:22:08,277 INFO L82 PathProgramCache]: Analyzing trace with hash 30499, now seen corresponding path program 1 times [2021-06-11 09:22:08,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:22:08,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405416724] [2021-06-11 09:22:08,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:22:08,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:22:08,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:22:08,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:22:08,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:22:08,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405416724] [2021-06-11 09:22:08,295 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:22:08,295 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 09:22:08,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300979901] [2021-06-11 09:22:08,295 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:22:08,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:22:08,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:22:08,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:22:08,296 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 85 [2021-06-11 09:22:08,296 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) [2021-06-11 09:22:08,296 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:22:08,296 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 85 [2021-06-11 09:22:08,296 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:22:08,300 INFO L129 PetriNetUnfolder]: 0/42 cut-off events. [2021-06-11 09:22:08,300 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:08,300 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. [2021-06-11 09:22:08,301 INFO L132 encePairwiseOnDemand]: 83/85 looper letters, 0 selfloop transitions, 1 changer transitions 0/42 dead transitions. [2021-06-11 09:22:08,301 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 42 transitions, 566 flow [2021-06-11 09:22:08,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:22:08,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:22:08,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 248 transitions. [2021-06-11 09:22:08,301 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9725490196078431 [2021-06-11 09:22:08,301 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 248 transitions. [2021-06-11 09:22:08,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 248 transitions. [2021-06-11 09:22:08,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:22:08,301 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 248 transitions. [2021-06-11 09:22:08,302 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) [2021-06-11 09:22:08,302 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) [2021-06-11 09:22:08,302 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) [2021-06-11 09:22:08,302 INFO L185 Difference]: Start difference. First operand has 84 places, 43 transitions, 566 flow. Second operand 3 states and 248 transitions. [2021-06-11 09:22:08,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 42 transitions, 566 flow [2021-06-11 09:22:08,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 42 transitions, 186 flow, removed 190 selfloop flow, removed 0 redundant places. [2021-06-11 09:22:08,305 INFO L241 Difference]: Finished difference. Result has 85 places, 42 transitions, 186 flow [2021-06-11 09:22:08,305 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} [2021-06-11 09:22:08,305 INFO L343 CegarLoopForPetriNet]: 84 programPoint places, 1 predicate places. [2021-06-11 09:22:08,306 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:08,306 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 42 transitions, 186 flow [2021-06-11 09:22:08,306 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 42 transitions, 186 flow [2021-06-11 09:22:08,306 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 85 places, 42 transitions, 186 flow [2021-06-11 09:22:08,308 INFO L129 PetriNetUnfolder]: 0/42 cut-off events. [2021-06-11 09:22:08,309 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:08,309 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. [2021-06-11 09:22:08,309 INFO L151 LiptonReduction]: Number of co-enabled transitions 800 [2021-06-11 09:22:08,311 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:22:08,311 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:22:08,311 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 5 [2021-06-11 09:22:08,311 INFO L480 AbstractCegarLoop]: Abstraction has has 85 places, 42 transitions, 186 flow [2021-06-11 09:22:08,312 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) [2021-06-11 09:22:08,312 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:22:08,312 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] [2021-06-11 09:22:08,312 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-06-11 09:22:08,312 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:22:08,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:22:08,312 INFO L82 PathProgramCache]: Analyzing trace with hash 1298741190, now seen corresponding path program 1 times [2021-06-11 09:22:08,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:22:08,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849363042] [2021-06-11 09:22:08,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:22:08,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:22:08,315 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:22:08,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:22:08,316 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:22:08,318 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:22:08,318 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:22:08,318 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-06-11 09:22:08,318 WARN L342 ceAbstractionStarter]: 20 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:22:08,318 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 21 thread instances. [2021-06-11 09:22:08,334 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:22:08,334 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 09:22:08,335 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:22:08,335 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:22:08,335 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:22:08,335 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:22:08,335 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:22:08,335 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:22:08,335 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:22:08,335 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:22:08,336 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 111 places, 68 transitions, 661 flow [2021-06-11 09:22:08,342 INFO L129 PetriNetUnfolder]: 0/131 cut-off events. [2021-06-11 09:22:08,342 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:08,342 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. [2021-06-11 09:22:08,342 INFO L82 GeneralOperation]: Start removeDead. Operand has 111 places, 68 transitions, 661 flow [2021-06-11 09:22:08,343 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 109 places, 66 transitions, 657 flow [2021-06-11 09:22:08,343 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:08,343 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 109 places, 66 transitions, 657 flow [2021-06-11 09:22:08,343 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 109 places, 66 transitions, 657 flow [2021-06-11 09:22:08,344 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 109 places, 66 transitions, 657 flow [2021-06-11 09:22:08,349 INFO L129 PetriNetUnfolder]: 0/87 cut-off events. [2021-06-11 09:22:08,349 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:08,349 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. [2021-06-11 09:22:08,350 INFO L151 LiptonReduction]: Number of co-enabled transitions 2688 [2021-06-11 09:22:08,995 INFO L163 LiptonReduction]: Checked pairs total: 1092 [2021-06-11 09:22:08,995 INFO L165 LiptonReduction]: Total number of compositions: 21 [2021-06-11 09:22:08,995 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 652 [2021-06-11 09:22:08,996 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-06-11 09:22:08,996 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:08,996 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:22:08,996 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-06-11 09:22:08,996 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:22:08,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:22:08,997 INFO L82 PathProgramCache]: Analyzing trace with hash 33315, now seen corresponding path program 1 times [2021-06-11 09:22:08,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:22:08,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185211136] [2021-06-11 09:22:08,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:22:08,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:22:09,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:22:09,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:22:09,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:22:09,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185211136] [2021-06-11 09:22:09,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:22:09,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 09:22:09,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689299660] [2021-06-11 09:22:09,003 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:22:09,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:22:09,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:22:09,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:22:09,003 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 89 [2021-06-11 09:22:09,004 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) [2021-06-11 09:22:09,004 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:22:09,004 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 89 [2021-06-11 09:22:09,004 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:22:09,012 INFO L129 PetriNetUnfolder]: 0/44 cut-off events. [2021-06-11 09:22:09,012 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:09,012 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. [2021-06-11 09:22:09,012 INFO L132 encePairwiseOnDemand]: 87/89 looper letters, 0 selfloop transitions, 1 changer transitions 0/44 dead transitions. [2021-06-11 09:22:09,012 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 44 transitions, 615 flow [2021-06-11 09:22:09,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:22:09,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:22:09,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 260 transitions. [2021-06-11 09:22:09,013 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9737827715355806 [2021-06-11 09:22:09,013 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 260 transitions. [2021-06-11 09:22:09,013 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 260 transitions. [2021-06-11 09:22:09,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:22:09,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 260 transitions. [2021-06-11 09:22:09,013 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) [2021-06-11 09:22:09,018 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) [2021-06-11 09:22:09,018 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) [2021-06-11 09:22:09,018 INFO L185 Difference]: Start difference. First operand has 88 places, 45 transitions, 615 flow. Second operand 3 states and 260 transitions. [2021-06-11 09:22:09,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 44 transitions, 615 flow [2021-06-11 09:22:09,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 44 transitions, 195 flow, removed 210 selfloop flow, removed 0 redundant places. [2021-06-11 09:22:09,022 INFO L241 Difference]: Finished difference. Result has 89 places, 44 transitions, 195 flow [2021-06-11 09:22:09,022 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} [2021-06-11 09:22:09,022 INFO L343 CegarLoopForPetriNet]: 88 programPoint places, 1 predicate places. [2021-06-11 09:22:09,022 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:09,022 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 89 places, 44 transitions, 195 flow [2021-06-11 09:22:09,022 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 89 places, 44 transitions, 195 flow [2021-06-11 09:22:09,022 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 89 places, 44 transitions, 195 flow [2021-06-11 09:22:09,025 INFO L129 PetriNetUnfolder]: 0/44 cut-off events. [2021-06-11 09:22:09,025 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:09,025 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. [2021-06-11 09:22:09,025 INFO L151 LiptonReduction]: Number of co-enabled transitions 882 [2021-06-11 09:22:09,028 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:22:09,028 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:22:09,028 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 6 [2021-06-11 09:22:09,028 INFO L480 AbstractCegarLoop]: Abstraction has has 89 places, 44 transitions, 195 flow [2021-06-11 09:22:09,028 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) [2021-06-11 09:22:09,028 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:22:09,029 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] [2021-06-11 09:22:09,029 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-06-11 09:22:09,029 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:22:09,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:22:09,029 INFO L82 PathProgramCache]: Analyzing trace with hash -1084276377, now seen corresponding path program 1 times [2021-06-11 09:22:09,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:22:09,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042499725] [2021-06-11 09:22:09,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:22:09,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:22:09,036 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:22:09,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:22:09,037 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:22:09,043 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:22:09,043 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:22:09,043 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-06-11 09:22:09,043 WARN L342 ceAbstractionStarter]: 21 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:22:09,043 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 22 thread instances. [2021-06-11 09:22:09,061 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:22:09,061 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 09:22:09,061 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:22:09,061 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:22:09,061 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:22:09,062 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:22:09,062 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:22:09,062 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:22:09,062 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:22:09,062 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:22:09,062 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 116 places, 71 transitions, 714 flow [2021-06-11 09:22:09,069 INFO L129 PetriNetUnfolder]: 0/137 cut-off events. [2021-06-11 09:22:09,069 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:09,069 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. [2021-06-11 09:22:09,069 INFO L82 GeneralOperation]: Start removeDead. Operand has 116 places, 71 transitions, 714 flow [2021-06-11 09:22:09,070 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 114 places, 69 transitions, 710 flow [2021-06-11 09:22:09,070 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:09,071 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 114 places, 69 transitions, 710 flow [2021-06-11 09:22:09,071 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 114 places, 69 transitions, 710 flow [2021-06-11 09:22:09,071 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 114 places, 69 transitions, 710 flow [2021-06-11 09:22:09,077 INFO L129 PetriNetUnfolder]: 0/91 cut-off events. [2021-06-11 09:22:09,077 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:09,077 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. [2021-06-11 09:22:09,079 INFO L151 LiptonReduction]: Number of co-enabled transitions 2948 [2021-06-11 09:22:09,790 INFO L163 LiptonReduction]: Checked pairs total: 1199 [2021-06-11 09:22:09,790 INFO L165 LiptonReduction]: Total number of compositions: 22 [2021-06-11 09:22:09,791 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 721 [2021-06-11 09:22:09,791 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-06-11 09:22:09,791 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:09,791 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:22:09,791 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-06-11 09:22:09,791 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:22:09,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:22:09,792 INFO L82 PathProgramCache]: Analyzing trace with hash 36259, now seen corresponding path program 1 times [2021-06-11 09:22:09,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:22:09,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198537839] [2021-06-11 09:22:09,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:22:09,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:22:09,796 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:22:09,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:22:09,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:22:09,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198537839] [2021-06-11 09:22:09,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:22:09,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 09:22:09,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809075628] [2021-06-11 09:22:09,804 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:22:09,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:22:09,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:22:09,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:22:09,805 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 93 [2021-06-11 09:22:09,805 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) [2021-06-11 09:22:09,805 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:22:09,805 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 93 [2021-06-11 09:22:09,805 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:22:09,810 INFO L129 PetriNetUnfolder]: 0/46 cut-off events. [2021-06-11 09:22:09,810 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:09,810 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. [2021-06-11 09:22:09,810 INFO L132 encePairwiseOnDemand]: 91/93 looper letters, 0 selfloop transitions, 1 changer transitions 0/46 dead transitions. [2021-06-11 09:22:09,810 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 46 transitions, 666 flow [2021-06-11 09:22:09,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:22:09,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:22:09,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 272 transitions. [2021-06-11 09:22:09,811 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.974910394265233 [2021-06-11 09:22:09,811 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 272 transitions. [2021-06-11 09:22:09,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 272 transitions. [2021-06-11 09:22:09,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:22:09,811 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 272 transitions. [2021-06-11 09:22:09,811 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) [2021-06-11 09:22:09,812 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) [2021-06-11 09:22:09,812 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) [2021-06-11 09:22:09,812 INFO L185 Difference]: Start difference. First operand has 92 places, 47 transitions, 666 flow. Second operand 3 states and 272 transitions. [2021-06-11 09:22:09,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 46 transitions, 666 flow [2021-06-11 09:22:09,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 46 transitions, 204 flow, removed 231 selfloop flow, removed 0 redundant places. [2021-06-11 09:22:09,816 INFO L241 Difference]: Finished difference. Result has 93 places, 46 transitions, 204 flow [2021-06-11 09:22:09,816 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} [2021-06-11 09:22:09,816 INFO L343 CegarLoopForPetriNet]: 92 programPoint places, 1 predicate places. [2021-06-11 09:22:09,816 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:09,816 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 93 places, 46 transitions, 204 flow [2021-06-11 09:22:09,816 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 93 places, 46 transitions, 204 flow [2021-06-11 09:22:09,817 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 93 places, 46 transitions, 204 flow [2021-06-11 09:22:09,819 INFO L129 PetriNetUnfolder]: 0/46 cut-off events. [2021-06-11 09:22:09,819 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:09,820 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. [2021-06-11 09:22:09,820 INFO L151 LiptonReduction]: Number of co-enabled transitions 968 [2021-06-11 09:22:09,822 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:22:09,822 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:22:09,823 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 7 [2021-06-11 09:22:09,823 INFO L480 AbstractCegarLoop]: Abstraction has has 93 places, 46 transitions, 204 flow [2021-06-11 09:22:09,823 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) [2021-06-11 09:22:09,823 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:22:09,823 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] [2021-06-11 09:22:09,823 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-06-11 09:22:09,823 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:22:09,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:22:09,824 INFO L82 PathProgramCache]: Analyzing trace with hash -1905098359, now seen corresponding path program 1 times [2021-06-11 09:22:09,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:22:09,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576250235] [2021-06-11 09:22:09,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:22:09,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:22:09,827 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:22:09,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:22:09,828 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:22:09,830 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:22:09,830 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:22:09,830 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-06-11 09:22:09,830 WARN L342 ceAbstractionStarter]: 22 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:22:09,830 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 23 thread instances. [2021-06-11 09:22:09,850 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:22:09,851 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 09:22:09,851 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:22:09,851 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:22:09,851 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:22:09,851 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:22:09,851 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:22:09,851 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:22:09,851 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:22:09,851 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:22:09,852 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 121 places, 74 transitions, 769 flow [2021-06-11 09:22:09,859 INFO L129 PetriNetUnfolder]: 0/143 cut-off events. [2021-06-11 09:22:09,860 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:09,860 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. [2021-06-11 09:22:09,860 INFO L82 GeneralOperation]: Start removeDead. Operand has 121 places, 74 transitions, 769 flow [2021-06-11 09:22:09,860 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 119 places, 72 transitions, 765 flow [2021-06-11 09:22:09,860 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:09,861 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 119 places, 72 transitions, 765 flow [2021-06-11 09:22:09,861 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 119 places, 72 transitions, 765 flow [2021-06-11 09:22:09,861 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 119 places, 72 transitions, 765 flow [2021-06-11 09:22:09,867 INFO L129 PetriNetUnfolder]: 0/95 cut-off events. [2021-06-11 09:22:09,867 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:09,867 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. [2021-06-11 09:22:09,869 INFO L151 LiptonReduction]: Number of co-enabled transitions 3220 [2021-06-11 09:22:10,591 INFO L163 LiptonReduction]: Checked pairs total: 1311 [2021-06-11 09:22:10,591 INFO L165 LiptonReduction]: Total number of compositions: 23 [2021-06-11 09:22:10,591 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 731 [2021-06-11 09:22:10,592 INFO L129 PetriNetUnfolder]: 0/1 cut-off events. [2021-06-11 09:22:10,592 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:10,592 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:22:10,592 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-06-11 09:22:10,592 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:22:10,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:22:10,592 INFO L82 PathProgramCache]: Analyzing trace with hash 39331, now seen corresponding path program 1 times [2021-06-11 09:22:10,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:22:10,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820718884] [2021-06-11 09:22:10,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:22:10,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:22:10,596 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:22:10,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:22:10,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:22:10,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820718884] [2021-06-11 09:22:10,598 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:22:10,598 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 09:22:10,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356347187] [2021-06-11 09:22:10,598 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:22:10,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:22:10,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:22:10,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:22:10,599 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 97 [2021-06-11 09:22:10,599 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) [2021-06-11 09:22:10,599 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:22:10,599 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 97 [2021-06-11 09:22:10,599 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:22:10,604 INFO L129 PetriNetUnfolder]: 0/48 cut-off events. [2021-06-11 09:22:10,604 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:10,604 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. [2021-06-11 09:22:10,605 INFO L132 encePairwiseOnDemand]: 95/97 looper letters, 0 selfloop transitions, 1 changer transitions 0/48 dead transitions. [2021-06-11 09:22:10,605 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 48 transitions, 719 flow [2021-06-11 09:22:10,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:22:10,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:22:10,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 284 transitions. [2021-06-11 09:22:10,605 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9759450171821306 [2021-06-11 09:22:10,605 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 284 transitions. [2021-06-11 09:22:10,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 284 transitions. [2021-06-11 09:22:10,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:22:10,606 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 284 transitions. [2021-06-11 09:22:10,606 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) [2021-06-11 09:22:10,606 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) [2021-06-11 09:22:10,607 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) [2021-06-11 09:22:10,607 INFO L185 Difference]: Start difference. First operand has 96 places, 49 transitions, 719 flow. Second operand 3 states and 284 transitions. [2021-06-11 09:22:10,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 48 transitions, 719 flow [2021-06-11 09:22:10,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 48 transitions, 213 flow, removed 253 selfloop flow, removed 0 redundant places. [2021-06-11 09:22:10,611 INFO L241 Difference]: Finished difference. Result has 97 places, 48 transitions, 213 flow [2021-06-11 09:22:10,611 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} [2021-06-11 09:22:10,611 INFO L343 CegarLoopForPetriNet]: 96 programPoint places, 1 predicate places. [2021-06-11 09:22:10,611 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:10,611 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 97 places, 48 transitions, 213 flow [2021-06-11 09:22:10,611 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 97 places, 48 transitions, 213 flow [2021-06-11 09:22:10,611 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 97 places, 48 transitions, 213 flow [2021-06-11 09:22:10,614 INFO L129 PetriNetUnfolder]: 0/48 cut-off events. [2021-06-11 09:22:10,614 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:10,614 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. [2021-06-11 09:22:10,615 INFO L151 LiptonReduction]: Number of co-enabled transitions 1058 [2021-06-11 09:22:10,616 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:22:10,617 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:22:10,617 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 6 [2021-06-11 09:22:10,617 INFO L480 AbstractCegarLoop]: Abstraction has has 97 places, 48 transitions, 213 flow [2021-06-11 09:22:10,617 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) [2021-06-11 09:22:10,617 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:22:10,617 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] [2021-06-11 09:22:10,617 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-06-11 09:22:10,617 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:22:10,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:22:10,617 INFO L82 PathProgramCache]: Analyzing trace with hash -113046974, now seen corresponding path program 1 times [2021-06-11 09:22:10,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:22:10,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279192806] [2021-06-11 09:22:10,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:22:10,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:22:10,621 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:22:10,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:22:10,622 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:22:10,624 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:22:10,624 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:22:10,624 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-06-11 09:22:10,624 WARN L342 ceAbstractionStarter]: 23 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:22:10,624 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 24 thread instances. [2021-06-11 09:22:10,664 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:22:10,665 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 09:22:10,665 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:22:10,665 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:22:10,665 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:22:10,665 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:22:10,665 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:22:10,665 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:22:10,665 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:22:10,665 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:22:10,666 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 126 places, 77 transitions, 826 flow [2021-06-11 09:22:10,674 INFO L129 PetriNetUnfolder]: 0/149 cut-off events. [2021-06-11 09:22:10,674 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:10,674 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. [2021-06-11 09:22:10,674 INFO L82 GeneralOperation]: Start removeDead. Operand has 126 places, 77 transitions, 826 flow [2021-06-11 09:22:10,675 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 124 places, 75 transitions, 822 flow [2021-06-11 09:22:10,675 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:10,675 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 124 places, 75 transitions, 822 flow [2021-06-11 09:22:10,675 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 124 places, 75 transitions, 822 flow [2021-06-11 09:22:10,675 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 124 places, 75 transitions, 822 flow [2021-06-11 09:22:10,681 INFO L129 PetriNetUnfolder]: 0/99 cut-off events. [2021-06-11 09:22:10,681 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:10,682 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. [2021-06-11 09:22:10,683 INFO L151 LiptonReduction]: Number of co-enabled transitions 3504 [2021-06-11 09:22:11,466 INFO L163 LiptonReduction]: Checked pairs total: 1428 [2021-06-11 09:22:11,466 INFO L165 LiptonReduction]: Total number of compositions: 24 [2021-06-11 09:22:11,466 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 791 [2021-06-11 09:22:11,467 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-06-11 09:22:11,467 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:11,467 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:22:11,467 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-06-11 09:22:11,467 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:22:11,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:22:11,467 INFO L82 PathProgramCache]: Analyzing trace with hash 42531, now seen corresponding path program 1 times [2021-06-11 09:22:11,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:22:11,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092974232] [2021-06-11 09:22:11,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:22:11,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:22:11,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:22:11,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:22:11,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:22:11,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092974232] [2021-06-11 09:22:11,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:22:11,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 09:22:11,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430471334] [2021-06-11 09:22:11,483 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:22:11,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:22:11,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:22:11,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:22:11,483 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 101 [2021-06-11 09:22:11,484 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) [2021-06-11 09:22:11,484 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:22:11,484 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 101 [2021-06-11 09:22:11,484 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:22:11,489 INFO L129 PetriNetUnfolder]: 0/50 cut-off events. [2021-06-11 09:22:11,489 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:11,489 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. [2021-06-11 09:22:11,489 INFO L132 encePairwiseOnDemand]: 99/101 looper letters, 0 selfloop transitions, 1 changer transitions 0/50 dead transitions. [2021-06-11 09:22:11,489 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 50 transitions, 774 flow [2021-06-11 09:22:11,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:22:11,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:22:11,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 296 transitions. [2021-06-11 09:22:11,490 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.976897689768977 [2021-06-11 09:22:11,490 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 296 transitions. [2021-06-11 09:22:11,490 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 296 transitions. [2021-06-11 09:22:11,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:22:11,490 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 296 transitions. [2021-06-11 09:22:11,491 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) [2021-06-11 09:22:11,491 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) [2021-06-11 09:22:11,491 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) [2021-06-11 09:22:11,491 INFO L185 Difference]: Start difference. First operand has 100 places, 51 transitions, 774 flow. Second operand 3 states and 296 transitions. [2021-06-11 09:22:11,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 50 transitions, 774 flow [2021-06-11 09:22:11,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 50 transitions, 222 flow, removed 276 selfloop flow, removed 0 redundant places. [2021-06-11 09:22:11,496 INFO L241 Difference]: Finished difference. Result has 101 places, 50 transitions, 222 flow [2021-06-11 09:22:11,496 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} [2021-06-11 09:22:11,496 INFO L343 CegarLoopForPetriNet]: 100 programPoint places, 1 predicate places. [2021-06-11 09:22:11,496 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:11,496 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 101 places, 50 transitions, 222 flow [2021-06-11 09:22:11,496 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 101 places, 50 transitions, 222 flow [2021-06-11 09:22:11,496 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 101 places, 50 transitions, 222 flow [2021-06-11 09:22:11,499 INFO L129 PetriNetUnfolder]: 0/50 cut-off events. [2021-06-11 09:22:11,499 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:11,499 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. [2021-06-11 09:22:11,500 INFO L151 LiptonReduction]: Number of co-enabled transitions 1152 [2021-06-11 09:22:11,501 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:22:11,501 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:22:11,501 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 5 [2021-06-11 09:22:11,501 INFO L480 AbstractCegarLoop]: Abstraction has has 101 places, 50 transitions, 222 flow [2021-06-11 09:22:11,502 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) [2021-06-11 09:22:11,502 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:22:11,502 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] [2021-06-11 09:22:11,502 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-06-11 09:22:11,502 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:22:11,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:22:11,502 INFO L82 PathProgramCache]: Analyzing trace with hash -2014993076, now seen corresponding path program 1 times [2021-06-11 09:22:11,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:22:11,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517809371] [2021-06-11 09:22:11,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:22:11,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:22:11,505 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:22:11,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:22:11,506 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:22:11,508 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:22:11,509 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:22:11,509 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-06-11 09:22:11,509 WARN L342 ceAbstractionStarter]: 24 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:22:11,509 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 25 thread instances. [2021-06-11 09:22:11,531 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:22:11,531 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 09:22:11,531 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:22:11,532 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:22:11,532 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:22:11,532 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:22:11,532 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:22:11,532 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:22:11,532 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:22:11,532 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:22:11,532 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 131 places, 80 transitions, 885 flow [2021-06-11 09:22:11,540 INFO L129 PetriNetUnfolder]: 0/155 cut-off events. [2021-06-11 09:22:11,541 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:11,541 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. [2021-06-11 09:22:11,541 INFO L82 GeneralOperation]: Start removeDead. Operand has 131 places, 80 transitions, 885 flow [2021-06-11 09:22:11,541 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 129 places, 78 transitions, 881 flow [2021-06-11 09:22:11,542 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:11,542 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 129 places, 78 transitions, 881 flow [2021-06-11 09:22:11,542 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 129 places, 78 transitions, 881 flow [2021-06-11 09:22:11,542 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 129 places, 78 transitions, 881 flow [2021-06-11 09:22:11,548 INFO L129 PetriNetUnfolder]: 0/103 cut-off events. [2021-06-11 09:22:11,549 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:11,549 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. [2021-06-11 09:22:11,551 INFO L151 LiptonReduction]: Number of co-enabled transitions 3800 [2021-06-11 09:22:12,405 INFO L163 LiptonReduction]: Checked pairs total: 1550 [2021-06-11 09:22:12,405 INFO L165 LiptonReduction]: Total number of compositions: 25 [2021-06-11 09:22:12,405 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 863 [2021-06-11 09:22:12,406 INFO L129 PetriNetUnfolder]: 0/1 cut-off events. [2021-06-11 09:22:12,406 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:12,406 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:22:12,406 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-06-11 09:22:12,406 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:22:12,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:22:12,406 INFO L82 PathProgramCache]: Analyzing trace with hash 45859, now seen corresponding path program 1 times [2021-06-11 09:22:12,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:22:12,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038056894] [2021-06-11 09:22:12,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:22:12,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:22:12,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:22:12,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:22:12,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:22:12,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038056894] [2021-06-11 09:22:12,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:22:12,420 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 09:22:12,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090903544] [2021-06-11 09:22:12,420 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:22:12,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:22:12,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:22:12,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:22:12,420 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 105 [2021-06-11 09:22:12,421 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) [2021-06-11 09:22:12,421 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:22:12,421 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 105 [2021-06-11 09:22:12,421 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:22:12,426 INFO L129 PetriNetUnfolder]: 0/52 cut-off events. [2021-06-11 09:22:12,426 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:12,426 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. [2021-06-11 09:22:12,427 INFO L132 encePairwiseOnDemand]: 103/105 looper letters, 0 selfloop transitions, 1 changer transitions 0/52 dead transitions. [2021-06-11 09:22:12,427 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 52 transitions, 831 flow [2021-06-11 09:22:12,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:22:12,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:22:12,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 308 transitions. [2021-06-11 09:22:12,427 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9777777777777777 [2021-06-11 09:22:12,427 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 308 transitions. [2021-06-11 09:22:12,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 308 transitions. [2021-06-11 09:22:12,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:22:12,428 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 308 transitions. [2021-06-11 09:22:12,428 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) [2021-06-11 09:22:12,428 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) [2021-06-11 09:22:12,428 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) [2021-06-11 09:22:12,428 INFO L185 Difference]: Start difference. First operand has 104 places, 53 transitions, 831 flow. Second operand 3 states and 308 transitions. [2021-06-11 09:22:12,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 52 transitions, 831 flow [2021-06-11 09:22:12,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 52 transitions, 231 flow, removed 300 selfloop flow, removed 0 redundant places. [2021-06-11 09:22:12,433 INFO L241 Difference]: Finished difference. Result has 105 places, 52 transitions, 231 flow [2021-06-11 09:22:12,433 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} [2021-06-11 09:22:12,434 INFO L343 CegarLoopForPetriNet]: 104 programPoint places, 1 predicate places. [2021-06-11 09:22:12,434 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:12,434 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 105 places, 52 transitions, 231 flow [2021-06-11 09:22:12,434 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 105 places, 52 transitions, 231 flow [2021-06-11 09:22:12,434 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 105 places, 52 transitions, 231 flow [2021-06-11 09:22:12,437 INFO L129 PetriNetUnfolder]: 0/52 cut-off events. [2021-06-11 09:22:12,437 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:12,437 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. [2021-06-11 09:22:12,438 INFO L151 LiptonReduction]: Number of co-enabled transitions 1250 [2021-06-11 09:22:12,439 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:22:12,439 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:22:12,439 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 5 [2021-06-11 09:22:12,440 INFO L480 AbstractCegarLoop]: Abstraction has has 105 places, 52 transitions, 231 flow [2021-06-11 09:22:12,440 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) [2021-06-11 09:22:12,440 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:22:12,440 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] [2021-06-11 09:22:12,440 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-06-11 09:22:12,440 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:22:12,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:22:12,440 INFO L82 PathProgramCache]: Analyzing trace with hash -4577491, now seen corresponding path program 1 times [2021-06-11 09:22:12,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:22:12,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688008114] [2021-06-11 09:22:12,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:22:12,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:22:12,444 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:22:12,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:22:12,445 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:22:12,447 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:22:12,447 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:22:12,447 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-06-11 09:22:12,447 WARN L342 ceAbstractionStarter]: 25 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:22:12,448 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 26 thread instances. [2021-06-11 09:22:12,466 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:22:12,466 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 09:22:12,467 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:22:12,467 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:22:12,467 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:22:12,467 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:22:12,467 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:22:12,467 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:22:12,467 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:22:12,467 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:22:12,467 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 136 places, 83 transitions, 946 flow [2021-06-11 09:22:12,476 INFO L129 PetriNetUnfolder]: 0/161 cut-off events. [2021-06-11 09:22:12,476 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:12,477 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. [2021-06-11 09:22:12,477 INFO L82 GeneralOperation]: Start removeDead. Operand has 136 places, 83 transitions, 946 flow [2021-06-11 09:22:12,477 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 134 places, 81 transitions, 942 flow [2021-06-11 09:22:12,477 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:12,478 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 134 places, 81 transitions, 942 flow [2021-06-11 09:22:12,478 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 134 places, 81 transitions, 942 flow [2021-06-11 09:22:12,478 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 134 places, 81 transitions, 942 flow [2021-06-11 09:22:12,485 INFO L129 PetriNetUnfolder]: 0/107 cut-off events. [2021-06-11 09:22:12,485 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:12,485 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. [2021-06-11 09:22:12,488 INFO L151 LiptonReduction]: Number of co-enabled transitions 4108 [2021-06-11 09:22:13,465 INFO L163 LiptonReduction]: Checked pairs total: 1677 [2021-06-11 09:22:13,465 INFO L165 LiptonReduction]: Total number of compositions: 26 [2021-06-11 09:22:13,465 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 988 [2021-06-11 09:22:13,466 INFO L129 PetriNetUnfolder]: 0/1 cut-off events. [2021-06-11 09:22:13,466 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:13,466 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:22:13,466 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-06-11 09:22:13,466 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:22:13,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:22:13,466 INFO L82 PathProgramCache]: Analyzing trace with hash 49315, now seen corresponding path program 1 times [2021-06-11 09:22:13,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:22:13,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145044531] [2021-06-11 09:22:13,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:22:13,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:22:13,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:22:13,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:22:13,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:22:13,475 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145044531] [2021-06-11 09:22:13,475 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:22:13,476 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 09:22:13,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544846166] [2021-06-11 09:22:13,476 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:22:13,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:22:13,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:22:13,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:22:13,476 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 109 [2021-06-11 09:22:13,477 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) [2021-06-11 09:22:13,477 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:22:13,477 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 109 [2021-06-11 09:22:13,477 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:22:13,482 INFO L129 PetriNetUnfolder]: 0/54 cut-off events. [2021-06-11 09:22:13,482 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:13,482 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. [2021-06-11 09:22:13,483 INFO L132 encePairwiseOnDemand]: 107/109 looper letters, 0 selfloop transitions, 1 changer transitions 0/54 dead transitions. [2021-06-11 09:22:13,483 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 54 transitions, 890 flow [2021-06-11 09:22:13,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:22:13,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:22:13,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 320 transitions. [2021-06-11 09:22:13,483 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9785932721712538 [2021-06-11 09:22:13,484 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 320 transitions. [2021-06-11 09:22:13,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 320 transitions. [2021-06-11 09:22:13,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:22:13,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 320 transitions. [2021-06-11 09:22:13,484 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) [2021-06-11 09:22:13,485 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) [2021-06-11 09:22:13,485 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) [2021-06-11 09:22:13,485 INFO L185 Difference]: Start difference. First operand has 108 places, 55 transitions, 890 flow. Second operand 3 states and 320 transitions. [2021-06-11 09:22:13,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 54 transitions, 890 flow [2021-06-11 09:22:13,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 54 transitions, 240 flow, removed 325 selfloop flow, removed 0 redundant places. [2021-06-11 09:22:13,490 INFO L241 Difference]: Finished difference. Result has 109 places, 54 transitions, 240 flow [2021-06-11 09:22:13,490 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} [2021-06-11 09:22:13,491 INFO L343 CegarLoopForPetriNet]: 108 programPoint places, 1 predicate places. [2021-06-11 09:22:13,491 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:13,491 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 109 places, 54 transitions, 240 flow [2021-06-11 09:22:13,491 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 109 places, 54 transitions, 240 flow [2021-06-11 09:22:13,491 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 109 places, 54 transitions, 240 flow [2021-06-11 09:22:13,494 INFO L129 PetriNetUnfolder]: 0/54 cut-off events. [2021-06-11 09:22:13,494 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:13,494 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. [2021-06-11 09:22:13,495 INFO L151 LiptonReduction]: Number of co-enabled transitions 1352 [2021-06-11 09:22:13,496 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:22:13,496 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:22:13,496 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 5 [2021-06-11 09:22:13,497 INFO L480 AbstractCegarLoop]: Abstraction has has 109 places, 54 transitions, 240 flow [2021-06-11 09:22:13,497 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) [2021-06-11 09:22:13,497 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:22:13,497 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] [2021-06-11 09:22:13,497 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-06-11 09:22:13,497 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:22:13,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:22:13,497 INFO L82 PathProgramCache]: Analyzing trace with hash 1477290255, now seen corresponding path program 1 times [2021-06-11 09:22:13,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:22:13,497 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464654239] [2021-06-11 09:22:13,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:22:13,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:22:13,501 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:22:13,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:22:13,502 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:22:13,504 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:22:13,504 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:22:13,504 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-06-11 09:22:13,504 WARN L342 ceAbstractionStarter]: 26 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:22:13,504 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 27 thread instances. [2021-06-11 09:22:13,523 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:22:13,523 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 09:22:13,524 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:22:13,524 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:22:13,524 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:22:13,524 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:22:13,524 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:22:13,524 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:22:13,524 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:22:13,524 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:22:13,525 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 141 places, 86 transitions, 1009 flow [2021-06-11 09:22:13,534 INFO L129 PetriNetUnfolder]: 0/167 cut-off events. [2021-06-11 09:22:13,534 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:13,534 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. [2021-06-11 09:22:13,534 INFO L82 GeneralOperation]: Start removeDead. Operand has 141 places, 86 transitions, 1009 flow [2021-06-11 09:22:13,535 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 139 places, 84 transitions, 1005 flow [2021-06-11 09:22:13,535 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:13,535 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 139 places, 84 transitions, 1005 flow [2021-06-11 09:22:13,535 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 139 places, 84 transitions, 1005 flow [2021-06-11 09:22:13,536 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 139 places, 84 transitions, 1005 flow [2021-06-11 09:22:13,543 INFO L129 PetriNetUnfolder]: 0/111 cut-off events. [2021-06-11 09:22:13,543 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:13,543 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. [2021-06-11 09:22:13,545 INFO L151 LiptonReduction]: Number of co-enabled transitions 4428 [2021-06-11 09:22:14,496 INFO L163 LiptonReduction]: Checked pairs total: 1809 [2021-06-11 09:22:14,496 INFO L165 LiptonReduction]: Total number of compositions: 27 [2021-06-11 09:22:14,496 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 961 [2021-06-11 09:22:14,497 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-06-11 09:22:14,497 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:14,497 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:22:14,497 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-06-11 09:22:14,497 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:22:14,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:22:14,497 INFO L82 PathProgramCache]: Analyzing trace with hash 52899, now seen corresponding path program 1 times [2021-06-11 09:22:14,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:22:14,497 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200391444] [2021-06-11 09:22:14,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:22:14,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:22:14,502 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:22:14,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:22:14,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:22:14,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200391444] [2021-06-11 09:22:14,504 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:22:14,504 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 09:22:14,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985823990] [2021-06-11 09:22:14,504 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:22:14,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:22:14,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:22:14,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:22:14,505 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 113 [2021-06-11 09:22:14,505 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) [2021-06-11 09:22:14,505 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:22:14,505 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 113 [2021-06-11 09:22:14,505 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:22:14,511 INFO L129 PetriNetUnfolder]: 0/56 cut-off events. [2021-06-11 09:22:14,511 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:14,511 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. [2021-06-11 09:22:14,511 INFO L132 encePairwiseOnDemand]: 111/113 looper letters, 0 selfloop transitions, 1 changer transitions 0/56 dead transitions. [2021-06-11 09:22:14,512 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 56 transitions, 951 flow [2021-06-11 09:22:14,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:22:14,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:22:14,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 332 transitions. [2021-06-11 09:22:14,512 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9793510324483776 [2021-06-11 09:22:14,512 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 332 transitions. [2021-06-11 09:22:14,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 332 transitions. [2021-06-11 09:22:14,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:22:14,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 332 transitions. [2021-06-11 09:22:14,513 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) [2021-06-11 09:22:14,513 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) [2021-06-11 09:22:14,513 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) [2021-06-11 09:22:14,514 INFO L185 Difference]: Start difference. First operand has 112 places, 57 transitions, 951 flow. Second operand 3 states and 332 transitions. [2021-06-11 09:22:14,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 56 transitions, 951 flow [2021-06-11 09:22:14,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 56 transitions, 249 flow, removed 351 selfloop flow, removed 0 redundant places. [2021-06-11 09:22:14,519 INFO L241 Difference]: Finished difference. Result has 113 places, 56 transitions, 249 flow [2021-06-11 09:22:14,519 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} [2021-06-11 09:22:14,519 INFO L343 CegarLoopForPetriNet]: 112 programPoint places, 1 predicate places. [2021-06-11 09:22:14,519 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:14,519 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 113 places, 56 transitions, 249 flow [2021-06-11 09:22:14,519 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 113 places, 56 transitions, 249 flow [2021-06-11 09:22:14,520 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 113 places, 56 transitions, 249 flow [2021-06-11 09:22:14,523 INFO L129 PetriNetUnfolder]: 0/56 cut-off events. [2021-06-11 09:22:14,523 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:14,523 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. [2021-06-11 09:22:14,524 INFO L151 LiptonReduction]: Number of co-enabled transitions 1458 [2021-06-11 09:22:14,525 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:22:14,525 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:22:14,525 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 6 [2021-06-11 09:22:14,526 INFO L480 AbstractCegarLoop]: Abstraction has has 113 places, 56 transitions, 249 flow [2021-06-11 09:22:14,526 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) [2021-06-11 09:22:14,526 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:22:14,526 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] [2021-06-11 09:22:14,526 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-06-11 09:22:14,526 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:22:14,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:22:14,526 INFO L82 PathProgramCache]: Analyzing trace with hash -1932848600, now seen corresponding path program 1 times [2021-06-11 09:22:14,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:22:14,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727881138] [2021-06-11 09:22:14,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:22:14,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:22:14,530 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:22:14,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:22:14,531 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:22:14,534 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:22:14,534 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:22:14,534 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-06-11 09:22:14,534 WARN L342 ceAbstractionStarter]: 27 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:22:14,535 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 28 thread instances. [2021-06-11 09:22:14,557 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:22:14,557 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 09:22:14,557 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:22:14,557 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:22:14,557 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:22:14,557 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:22:14,557 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:22:14,558 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:22:14,558 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:22:14,558 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:22:14,558 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 146 places, 89 transitions, 1074 flow [2021-06-11 09:22:14,568 INFO L129 PetriNetUnfolder]: 0/173 cut-off events. [2021-06-11 09:22:14,568 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:14,569 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. [2021-06-11 09:22:14,569 INFO L82 GeneralOperation]: Start removeDead. Operand has 146 places, 89 transitions, 1074 flow [2021-06-11 09:22:14,569 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 144 places, 87 transitions, 1070 flow [2021-06-11 09:22:14,569 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:14,569 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 144 places, 87 transitions, 1070 flow [2021-06-11 09:22:14,570 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 144 places, 87 transitions, 1070 flow [2021-06-11 09:22:14,570 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 144 places, 87 transitions, 1070 flow [2021-06-11 09:22:14,578 INFO L129 PetriNetUnfolder]: 0/115 cut-off events. [2021-06-11 09:22:14,578 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:14,578 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. [2021-06-11 09:22:14,580 INFO L151 LiptonReduction]: Number of co-enabled transitions 4760 [2021-06-11 09:22:15,667 INFO L163 LiptonReduction]: Checked pairs total: 1946 [2021-06-11 09:22:15,667 INFO L165 LiptonReduction]: Total number of compositions: 28 [2021-06-11 09:22:15,668 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1099 [2021-06-11 09:22:15,668 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-06-11 09:22:15,668 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:15,668 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:22:15,668 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-06-11 09:22:15,668 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:22:15,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:22:15,669 INFO L82 PathProgramCache]: Analyzing trace with hash 56611, now seen corresponding path program 1 times [2021-06-11 09:22:15,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:22:15,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451426096] [2021-06-11 09:22:15,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:22:15,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:22:15,674 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:22:15,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:22:15,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:22:15,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451426096] [2021-06-11 09:22:15,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:22:15,676 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 09:22:15,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470484250] [2021-06-11 09:22:15,677 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:22:15,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:22:15,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:22:15,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:22:15,677 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 117 [2021-06-11 09:22:15,677 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) [2021-06-11 09:22:15,677 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:22:15,677 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 117 [2021-06-11 09:22:15,677 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:22:15,684 INFO L129 PetriNetUnfolder]: 0/58 cut-off events. [2021-06-11 09:22:15,684 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:15,684 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. [2021-06-11 09:22:15,684 INFO L132 encePairwiseOnDemand]: 115/117 looper letters, 0 selfloop transitions, 1 changer transitions 0/58 dead transitions. [2021-06-11 09:22:15,684 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 58 transitions, 1014 flow [2021-06-11 09:22:15,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:22:15,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:22:15,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 344 transitions. [2021-06-11 09:22:15,685 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.98005698005698 [2021-06-11 09:22:15,685 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 344 transitions. [2021-06-11 09:22:15,685 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 344 transitions. [2021-06-11 09:22:15,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:22:15,685 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 344 transitions. [2021-06-11 09:22:15,686 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) [2021-06-11 09:22:15,686 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) [2021-06-11 09:22:15,686 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) [2021-06-11 09:22:15,686 INFO L185 Difference]: Start difference. First operand has 116 places, 59 transitions, 1014 flow. Second operand 3 states and 344 transitions. [2021-06-11 09:22:15,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 58 transitions, 1014 flow [2021-06-11 09:22:15,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 58 transitions, 258 flow, removed 378 selfloop flow, removed 0 redundant places. [2021-06-11 09:22:15,692 INFO L241 Difference]: Finished difference. Result has 117 places, 58 transitions, 258 flow [2021-06-11 09:22:15,692 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} [2021-06-11 09:22:15,692 INFO L343 CegarLoopForPetriNet]: 116 programPoint places, 1 predicate places. [2021-06-11 09:22:15,692 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:15,692 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 117 places, 58 transitions, 258 flow [2021-06-11 09:22:15,693 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 117 places, 58 transitions, 258 flow [2021-06-11 09:22:15,693 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 117 places, 58 transitions, 258 flow [2021-06-11 09:22:15,696 INFO L129 PetriNetUnfolder]: 0/58 cut-off events. [2021-06-11 09:22:15,696 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:15,697 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. [2021-06-11 09:22:15,697 INFO L151 LiptonReduction]: Number of co-enabled transitions 1568 [2021-06-11 09:22:15,699 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:22:15,699 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:22:15,699 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 7 [2021-06-11 09:22:15,699 INFO L480 AbstractCegarLoop]: Abstraction has has 117 places, 58 transitions, 258 flow [2021-06-11 09:22:15,699 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) [2021-06-11 09:22:15,699 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:22:15,699 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] [2021-06-11 09:22:15,699 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-06-11 09:22:15,699 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:22:15,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:22:15,699 INFO L82 PathProgramCache]: Analyzing trace with hash -1008561454, now seen corresponding path program 1 times [2021-06-11 09:22:15,700 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:22:15,700 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630290639] [2021-06-11 09:22:15,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:22:15,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:22:15,704 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:22:15,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:22:15,705 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:22:15,707 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:22:15,707 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:22:15,707 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-06-11 09:22:15,708 WARN L342 ceAbstractionStarter]: 28 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:22:15,708 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 29 thread instances. [2021-06-11 09:22:15,727 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:22:15,728 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 09:22:15,728 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:22:15,728 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:22:15,728 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:22:15,728 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:22:15,728 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:22:15,728 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:22:15,728 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:22:15,728 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:22:15,729 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 151 places, 92 transitions, 1141 flow [2021-06-11 09:22:15,740 INFO L129 PetriNetUnfolder]: 0/179 cut-off events. [2021-06-11 09:22:15,740 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:15,740 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. [2021-06-11 09:22:15,740 INFO L82 GeneralOperation]: Start removeDead. Operand has 151 places, 92 transitions, 1141 flow [2021-06-11 09:22:15,741 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 149 places, 90 transitions, 1137 flow [2021-06-11 09:22:15,741 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:15,741 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 149 places, 90 transitions, 1137 flow [2021-06-11 09:22:15,741 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 149 places, 90 transitions, 1137 flow [2021-06-11 09:22:15,741 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 149 places, 90 transitions, 1137 flow [2021-06-11 09:22:15,750 INFO L129 PetriNetUnfolder]: 0/119 cut-off events. [2021-06-11 09:22:15,750 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:15,750 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. [2021-06-11 09:22:15,752 INFO L151 LiptonReduction]: Number of co-enabled transitions 5104 [2021-06-11 09:22:16,843 INFO L163 LiptonReduction]: Checked pairs total: 2088 [2021-06-11 09:22:16,844 INFO L165 LiptonReduction]: Total number of compositions: 29 [2021-06-11 09:22:16,844 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1103 [2021-06-11 09:22:16,845 INFO L129 PetriNetUnfolder]: 0/1 cut-off events. [2021-06-11 09:22:16,845 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:16,845 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:22:16,845 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-06-11 09:22:16,845 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:22:16,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:22:16,845 INFO L82 PathProgramCache]: Analyzing trace with hash 60451, now seen corresponding path program 1 times [2021-06-11 09:22:16,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:22:16,845 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605335257] [2021-06-11 09:22:16,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:22:16,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:22:16,853 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:22:16,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:22:16,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:22:16,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605335257] [2021-06-11 09:22:16,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:22:16,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 09:22:16,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462013706] [2021-06-11 09:22:16,856 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:22:16,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:22:16,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:22:16,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:22:16,856 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 121 [2021-06-11 09:22:16,857 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) [2021-06-11 09:22:16,857 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:22:16,857 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 121 [2021-06-11 09:22:16,857 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:22:16,863 INFO L129 PetriNetUnfolder]: 0/60 cut-off events. [2021-06-11 09:22:16,863 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:16,863 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. [2021-06-11 09:22:16,864 INFO L132 encePairwiseOnDemand]: 119/121 looper letters, 0 selfloop transitions, 1 changer transitions 0/60 dead transitions. [2021-06-11 09:22:16,864 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 60 transitions, 1079 flow [2021-06-11 09:22:16,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:22:16,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:22:16,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 356 transitions. [2021-06-11 09:22:16,864 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9807162534435262 [2021-06-11 09:22:16,864 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 356 transitions. [2021-06-11 09:22:16,865 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 356 transitions. [2021-06-11 09:22:16,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:22:16,865 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 356 transitions. [2021-06-11 09:22:16,865 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) [2021-06-11 09:22:16,866 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) [2021-06-11 09:22:16,866 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) [2021-06-11 09:22:16,866 INFO L185 Difference]: Start difference. First operand has 120 places, 61 transitions, 1079 flow. Second operand 3 states and 356 transitions. [2021-06-11 09:22:16,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 60 transitions, 1079 flow [2021-06-11 09:22:16,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 60 transitions, 267 flow, removed 406 selfloop flow, removed 0 redundant places. [2021-06-11 09:22:16,872 INFO L241 Difference]: Finished difference. Result has 121 places, 60 transitions, 267 flow [2021-06-11 09:22:16,872 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} [2021-06-11 09:22:16,872 INFO L343 CegarLoopForPetriNet]: 120 programPoint places, 1 predicate places. [2021-06-11 09:22:16,873 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:16,873 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 121 places, 60 transitions, 267 flow [2021-06-11 09:22:16,873 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 121 places, 60 transitions, 267 flow [2021-06-11 09:22:16,873 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 121 places, 60 transitions, 267 flow [2021-06-11 09:22:16,877 INFO L129 PetriNetUnfolder]: 0/60 cut-off events. [2021-06-11 09:22:16,877 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:16,877 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. [2021-06-11 09:22:16,878 INFO L151 LiptonReduction]: Number of co-enabled transitions 1682 [2021-06-11 09:22:16,879 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:22:16,879 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:22:16,879 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 6 [2021-06-11 09:22:16,879 INFO L480 AbstractCegarLoop]: Abstraction has has 121 places, 60 transitions, 267 flow [2021-06-11 09:22:16,880 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) [2021-06-11 09:22:16,880 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:22:16,880 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] [2021-06-11 09:22:16,880 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-06-11 09:22:16,880 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:22:16,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:22:16,880 INFO L82 PathProgramCache]: Analyzing trace with hash 1949254963, now seen corresponding path program 1 times [2021-06-11 09:22:16,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:22:16,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414787670] [2021-06-11 09:22:16,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:22:16,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:22:16,884 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:22:16,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:22:16,885 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:22:16,888 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:22:16,888 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:22:16,889 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-06-11 09:22:16,889 WARN L342 ceAbstractionStarter]: 29 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:22:16,889 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 30 thread instances. [2021-06-11 09:22:16,910 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:22:16,910 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 09:22:16,910 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:22:16,910 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:22:16,910 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:22:16,910 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:22:16,910 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:22:16,911 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:22:16,911 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:22:16,911 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:22:16,911 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 156 places, 95 transitions, 1210 flow [2021-06-11 09:22:16,923 INFO L129 PetriNetUnfolder]: 0/185 cut-off events. [2021-06-11 09:22:16,923 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:16,923 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. [2021-06-11 09:22:16,923 INFO L82 GeneralOperation]: Start removeDead. Operand has 156 places, 95 transitions, 1210 flow [2021-06-11 09:22:16,924 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 154 places, 93 transitions, 1206 flow [2021-06-11 09:22:16,924 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:16,924 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 154 places, 93 transitions, 1206 flow [2021-06-11 09:22:16,924 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 154 places, 93 transitions, 1206 flow [2021-06-11 09:22:16,924 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 154 places, 93 transitions, 1206 flow [2021-06-11 09:22:16,933 INFO L129 PetriNetUnfolder]: 0/123 cut-off events. [2021-06-11 09:22:16,933 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:16,933 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. [2021-06-11 09:22:16,936 INFO L151 LiptonReduction]: Number of co-enabled transitions 5460 [2021-06-11 09:22:18,142 INFO L163 LiptonReduction]: Checked pairs total: 2235 [2021-06-11 09:22:18,142 INFO L165 LiptonReduction]: Total number of compositions: 30 [2021-06-11 09:22:18,142 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1218 [2021-06-11 09:22:18,143 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-06-11 09:22:18,143 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:18,143 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:22:18,143 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-06-11 09:22:18,143 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:22:18,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:22:18,143 INFO L82 PathProgramCache]: Analyzing trace with hash 64419, now seen corresponding path program 1 times [2021-06-11 09:22:18,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:22:18,143 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274306868] [2021-06-11 09:22:18,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:22:18,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:22:18,148 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:22:18,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:22:18,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:22:18,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274306868] [2021-06-11 09:22:18,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:22:18,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 09:22:18,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849708865] [2021-06-11 09:22:18,151 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:22:18,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:22:18,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:22:18,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:22:18,151 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 125 [2021-06-11 09:22:18,152 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) [2021-06-11 09:22:18,152 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:22:18,152 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 125 [2021-06-11 09:22:18,152 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:22:18,160 INFO L129 PetriNetUnfolder]: 0/62 cut-off events. [2021-06-11 09:22:18,160 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:18,160 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. [2021-06-11 09:22:18,160 INFO L132 encePairwiseOnDemand]: 123/125 looper letters, 0 selfloop transitions, 1 changer transitions 0/62 dead transitions. [2021-06-11 09:22:18,160 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 62 transitions, 1146 flow [2021-06-11 09:22:18,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:22:18,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:22:18,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 368 transitions. [2021-06-11 09:22:18,161 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9813333333333333 [2021-06-11 09:22:18,161 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 368 transitions. [2021-06-11 09:22:18,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 368 transitions. [2021-06-11 09:22:18,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:22:18,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 368 transitions. [2021-06-11 09:22:18,162 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) [2021-06-11 09:22:18,163 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) [2021-06-11 09:22:18,163 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) [2021-06-11 09:22:18,163 INFO L185 Difference]: Start difference. First operand has 124 places, 63 transitions, 1146 flow. Second operand 3 states and 368 transitions. [2021-06-11 09:22:18,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 62 transitions, 1146 flow [2021-06-11 09:22:18,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 62 transitions, 276 flow, removed 435 selfloop flow, removed 0 redundant places. [2021-06-11 09:22:18,171 INFO L241 Difference]: Finished difference. Result has 125 places, 62 transitions, 276 flow [2021-06-11 09:22:18,171 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} [2021-06-11 09:22:18,171 INFO L343 CegarLoopForPetriNet]: 124 programPoint places, 1 predicate places. [2021-06-11 09:22:18,171 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:18,171 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 125 places, 62 transitions, 276 flow [2021-06-11 09:22:18,172 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 125 places, 62 transitions, 276 flow [2021-06-11 09:22:18,172 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 125 places, 62 transitions, 276 flow [2021-06-11 09:22:18,177 INFO L129 PetriNetUnfolder]: 0/62 cut-off events. [2021-06-11 09:22:18,177 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:18,177 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. [2021-06-11 09:22:18,178 INFO L151 LiptonReduction]: Number of co-enabled transitions 1800 [2021-06-11 09:22:18,179 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:22:18,179 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:22:18,180 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 9 [2021-06-11 09:22:18,180 INFO L480 AbstractCegarLoop]: Abstraction has has 125 places, 62 transitions, 276 flow [2021-06-11 09:22:18,180 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) [2021-06-11 09:22:18,180 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:22:18,180 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] [2021-06-11 09:22:18,180 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-06-11 09:22:18,180 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:22:18,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:22:18,180 INFO L82 PathProgramCache]: Analyzing trace with hash 2018076821, now seen corresponding path program 1 times [2021-06-11 09:22:18,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:22:18,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29765510] [2021-06-11 09:22:18,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:22:18,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:22:18,185 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:22:18,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:22:18,186 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:22:18,189 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:22:18,189 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:22:18,190 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-06-11 09:22:18,190 WARN L342 ceAbstractionStarter]: 30 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:22:18,190 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 31 thread instances. [2021-06-11 09:22:18,213 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:22:18,213 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 09:22:18,214 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:22:18,214 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:22:18,214 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:22:18,214 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:22:18,214 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:22:18,214 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:22:18,214 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:22:18,214 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:22:18,215 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 161 places, 98 transitions, 1281 flow [2021-06-11 09:22:18,229 INFO L129 PetriNetUnfolder]: 0/191 cut-off events. [2021-06-11 09:22:18,229 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:18,229 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. [2021-06-11 09:22:18,229 INFO L82 GeneralOperation]: Start removeDead. Operand has 161 places, 98 transitions, 1281 flow [2021-06-11 09:22:18,230 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 159 places, 96 transitions, 1277 flow [2021-06-11 09:22:18,230 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:18,230 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 159 places, 96 transitions, 1277 flow [2021-06-11 09:22:18,231 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 159 places, 96 transitions, 1277 flow [2021-06-11 09:22:18,231 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 159 places, 96 transitions, 1277 flow [2021-06-11 09:22:18,242 INFO L129 PetriNetUnfolder]: 0/127 cut-off events. [2021-06-11 09:22:18,242 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:18,242 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. [2021-06-11 09:22:18,246 INFO L151 LiptonReduction]: Number of co-enabled transitions 5828 [2021-06-11 09:22:19,474 INFO L163 LiptonReduction]: Checked pairs total: 2387 [2021-06-11 09:22:19,474 INFO L165 LiptonReduction]: Total number of compositions: 31 [2021-06-11 09:22:19,475 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1245 [2021-06-11 09:22:19,475 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-06-11 09:22:19,475 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:19,475 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:22:19,475 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-06-11 09:22:19,475 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:22:19,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:22:19,476 INFO L82 PathProgramCache]: Analyzing trace with hash 68515, now seen corresponding path program 1 times [2021-06-11 09:22:19,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:22:19,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937840873] [2021-06-11 09:22:19,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:22:19,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:22:19,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:22:19,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:22:19,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:22:19,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937840873] [2021-06-11 09:22:19,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:22:19,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 09:22:19,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200454275] [2021-06-11 09:22:19,483 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:22:19,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:22:19,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:22:19,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:22:19,484 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 129 [2021-06-11 09:22:19,484 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) [2021-06-11 09:22:19,484 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:22:19,484 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 129 [2021-06-11 09:22:19,484 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:22:19,492 INFO L129 PetriNetUnfolder]: 0/64 cut-off events. [2021-06-11 09:22:19,492 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:19,492 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. [2021-06-11 09:22:19,492 INFO L132 encePairwiseOnDemand]: 127/129 looper letters, 0 selfloop transitions, 1 changer transitions 0/64 dead transitions. [2021-06-11 09:22:19,492 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 64 transitions, 1215 flow [2021-06-11 09:22:19,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:22:19,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:22:19,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 380 transitions. [2021-06-11 09:22:19,493 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9819121447028424 [2021-06-11 09:22:19,493 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 380 transitions. [2021-06-11 09:22:19,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 380 transitions. [2021-06-11 09:22:19,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:22:19,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 380 transitions. [2021-06-11 09:22:19,494 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) [2021-06-11 09:22:19,494 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) [2021-06-11 09:22:19,495 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) [2021-06-11 09:22:19,495 INFO L185 Difference]: Start difference. First operand has 128 places, 65 transitions, 1215 flow. Second operand 3 states and 380 transitions. [2021-06-11 09:22:19,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 64 transitions, 1215 flow [2021-06-11 09:22:19,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 64 transitions, 285 flow, removed 465 selfloop flow, removed 0 redundant places. [2021-06-11 09:22:19,503 INFO L241 Difference]: Finished difference. Result has 129 places, 64 transitions, 285 flow [2021-06-11 09:22:19,503 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} [2021-06-11 09:22:19,503 INFO L343 CegarLoopForPetriNet]: 128 programPoint places, 1 predicate places. [2021-06-11 09:22:19,503 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:19,503 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 129 places, 64 transitions, 285 flow [2021-06-11 09:22:19,503 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 129 places, 64 transitions, 285 flow [2021-06-11 09:22:19,504 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 129 places, 64 transitions, 285 flow [2021-06-11 09:22:19,508 INFO L129 PetriNetUnfolder]: 0/64 cut-off events. [2021-06-11 09:22:19,508 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:19,508 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. [2021-06-11 09:22:19,509 INFO L151 LiptonReduction]: Number of co-enabled transitions 1922 [2021-06-11 09:22:19,511 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:22:19,511 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:22:19,511 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 8 [2021-06-11 09:22:19,513 INFO L480 AbstractCegarLoop]: Abstraction has has 129 places, 64 transitions, 285 flow [2021-06-11 09:22:19,513 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) [2021-06-11 09:22:19,513 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:22:19,513 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] [2021-06-11 09:22:19,513 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-06-11 09:22:19,513 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:22:19,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:22:19,513 INFO L82 PathProgramCache]: Analyzing trace with hash -1642907058, now seen corresponding path program 1 times [2021-06-11 09:22:19,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:22:19,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605436144] [2021-06-11 09:22:19,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:22:19,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:22:19,518 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:22:19,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:22:19,520 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:22:19,550 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:22:19,550 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:22:19,551 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-06-11 09:22:19,551 WARN L342 ceAbstractionStarter]: 31 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:22:19,551 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 32 thread instances. [2021-06-11 09:22:19,577 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:22:19,577 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 09:22:19,578 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:22:19,578 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:22:19,578 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:22:19,578 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:22:19,578 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:22:19,578 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:22:19,578 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:22:19,578 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:22:19,579 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 166 places, 101 transitions, 1354 flow [2021-06-11 09:22:19,592 INFO L129 PetriNetUnfolder]: 0/197 cut-off events. [2021-06-11 09:22:19,592 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:19,592 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. [2021-06-11 09:22:19,592 INFO L82 GeneralOperation]: Start removeDead. Operand has 166 places, 101 transitions, 1354 flow [2021-06-11 09:22:19,593 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 164 places, 99 transitions, 1350 flow [2021-06-11 09:22:19,593 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:19,593 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 164 places, 99 transitions, 1350 flow [2021-06-11 09:22:19,593 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 164 places, 99 transitions, 1350 flow [2021-06-11 09:22:19,594 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 164 places, 99 transitions, 1350 flow [2021-06-11 09:22:19,604 INFO L129 PetriNetUnfolder]: 0/131 cut-off events. [2021-06-11 09:22:19,604 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:19,605 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. [2021-06-11 09:22:19,608 INFO L151 LiptonReduction]: Number of co-enabled transitions 6208 [2021-06-11 09:22:20,932 INFO L163 LiptonReduction]: Checked pairs total: 2544 [2021-06-11 09:22:20,932 INFO L165 LiptonReduction]: Total number of compositions: 32 [2021-06-11 09:22:20,932 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1339 [2021-06-11 09:22:20,933 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-06-11 09:22:20,933 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:20,933 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:22:20,933 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-06-11 09:22:20,933 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:22:20,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:22:20,933 INFO L82 PathProgramCache]: Analyzing trace with hash 72739, now seen corresponding path program 1 times [2021-06-11 09:22:20,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:22:20,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686248397] [2021-06-11 09:22:20,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:22:20,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:22:20,938 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:22:20,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:22:20,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:22:20,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686248397] [2021-06-11 09:22:20,944 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:22:20,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 09:22:20,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294701411] [2021-06-11 09:22:20,944 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:22:20,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:22:20,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:22:20,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:22:20,945 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 133 [2021-06-11 09:22:20,945 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) [2021-06-11 09:22:20,945 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:22:20,945 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 133 [2021-06-11 09:22:20,945 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:22:20,953 INFO L129 PetriNetUnfolder]: 0/66 cut-off events. [2021-06-11 09:22:20,953 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:20,953 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. [2021-06-11 09:22:20,953 INFO L132 encePairwiseOnDemand]: 131/133 looper letters, 0 selfloop transitions, 1 changer transitions 0/66 dead transitions. [2021-06-11 09:22:20,953 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 66 transitions, 1286 flow [2021-06-11 09:22:20,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:22:20,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:22:20,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 392 transitions. [2021-06-11 09:22:20,954 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9824561403508771 [2021-06-11 09:22:20,954 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 392 transitions. [2021-06-11 09:22:20,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 392 transitions. [2021-06-11 09:22:20,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:22:20,955 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 392 transitions. [2021-06-11 09:22:20,955 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) [2021-06-11 09:22:20,956 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) [2021-06-11 09:22:20,956 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) [2021-06-11 09:22:20,956 INFO L185 Difference]: Start difference. First operand has 132 places, 67 transitions, 1286 flow. Second operand 3 states and 392 transitions. [2021-06-11 09:22:20,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 66 transitions, 1286 flow [2021-06-11 09:22:20,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 66 transitions, 294 flow, removed 496 selfloop flow, removed 0 redundant places. [2021-06-11 09:22:20,965 INFO L241 Difference]: Finished difference. Result has 133 places, 66 transitions, 294 flow [2021-06-11 09:22:20,965 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} [2021-06-11 09:22:20,965 INFO L343 CegarLoopForPetriNet]: 132 programPoint places, 1 predicate places. [2021-06-11 09:22:20,965 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:20,965 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 133 places, 66 transitions, 294 flow [2021-06-11 09:22:20,965 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 133 places, 66 transitions, 294 flow [2021-06-11 09:22:20,965 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 133 places, 66 transitions, 294 flow [2021-06-11 09:22:20,970 INFO L129 PetriNetUnfolder]: 0/66 cut-off events. [2021-06-11 09:22:20,970 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:20,970 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. [2021-06-11 09:22:20,971 INFO L151 LiptonReduction]: Number of co-enabled transitions 2048 [2021-06-11 09:22:20,973 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:22:20,973 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:22:20,973 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 8 [2021-06-11 09:22:20,973 INFO L480 AbstractCegarLoop]: Abstraction has has 133 places, 66 transitions, 294 flow [2021-06-11 09:22:20,973 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) [2021-06-11 09:22:20,973 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:22:20,973 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] [2021-06-11 09:22:20,973 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-06-11 09:22:20,973 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:22:20,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:22:20,974 INFO L82 PathProgramCache]: Analyzing trace with hash 1398026328, now seen corresponding path program 1 times [2021-06-11 09:22:20,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:22:20,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580468547] [2021-06-11 09:22:20,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:22:20,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:22:20,978 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:22:20,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:22:20,980 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:22:20,983 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:22:20,983 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:22:20,983 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-06-11 09:22:20,983 WARN L342 ceAbstractionStarter]: 32 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:22:20,983 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 33 thread instances. [2021-06-11 09:22:21,007 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:22:21,007 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 09:22:21,007 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:22:21,007 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:22:21,007 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:22:21,008 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:22:21,008 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:22:21,008 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:22:21,008 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:22:21,008 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:22:21,008 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 171 places, 104 transitions, 1429 flow [2021-06-11 09:22:21,022 INFO L129 PetriNetUnfolder]: 0/203 cut-off events. [2021-06-11 09:22:21,023 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:21,023 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. [2021-06-11 09:22:21,023 INFO L82 GeneralOperation]: Start removeDead. Operand has 171 places, 104 transitions, 1429 flow [2021-06-11 09:22:21,024 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 169 places, 102 transitions, 1425 flow [2021-06-11 09:22:21,024 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:21,024 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 169 places, 102 transitions, 1425 flow [2021-06-11 09:22:21,024 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 169 places, 102 transitions, 1425 flow [2021-06-11 09:22:21,025 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 169 places, 102 transitions, 1425 flow [2021-06-11 09:22:21,036 INFO L129 PetriNetUnfolder]: 0/135 cut-off events. [2021-06-11 09:22:21,036 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:21,036 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. [2021-06-11 09:22:21,039 INFO L151 LiptonReduction]: Number of co-enabled transitions 6600 [2021-06-11 09:22:22,488 INFO L163 LiptonReduction]: Checked pairs total: 2706 [2021-06-11 09:22:22,488 INFO L165 LiptonReduction]: Total number of compositions: 33 [2021-06-11 09:22:22,488 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1464 [2021-06-11 09:22:22,489 INFO L129 PetriNetUnfolder]: 0/1 cut-off events. [2021-06-11 09:22:22,489 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:22,489 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:22:22,489 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-06-11 09:22:22,489 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:22:22,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:22:22,489 INFO L82 PathProgramCache]: Analyzing trace with hash 77091, now seen corresponding path program 1 times [2021-06-11 09:22:22,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:22:22,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71068612] [2021-06-11 09:22:22,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:22:22,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:22:22,499 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:22:22,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:22:22,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:22:22,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71068612] [2021-06-11 09:22:22,501 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:22:22,501 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 09:22:22,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141248690] [2021-06-11 09:22:22,501 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:22:22,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:22:22,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:22:22,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:22:22,502 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 137 [2021-06-11 09:22:22,502 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) [2021-06-11 09:22:22,502 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:22:22,502 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 137 [2021-06-11 09:22:22,502 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:22:22,511 INFO L129 PetriNetUnfolder]: 0/68 cut-off events. [2021-06-11 09:22:22,511 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:22,511 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. [2021-06-11 09:22:22,511 INFO L132 encePairwiseOnDemand]: 135/137 looper letters, 0 selfloop transitions, 1 changer transitions 0/68 dead transitions. [2021-06-11 09:22:22,511 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 68 transitions, 1359 flow [2021-06-11 09:22:22,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:22:22,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:22:22,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 404 transitions. [2021-06-11 09:22:22,512 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9829683698296837 [2021-06-11 09:22:22,512 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 404 transitions. [2021-06-11 09:22:22,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 404 transitions. [2021-06-11 09:22:22,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:22:22,529 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 404 transitions. [2021-06-11 09:22:22,529 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) [2021-06-11 09:22:22,530 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) [2021-06-11 09:22:22,530 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) [2021-06-11 09:22:22,530 INFO L185 Difference]: Start difference. First operand has 136 places, 69 transitions, 1359 flow. Second operand 3 states and 404 transitions. [2021-06-11 09:22:22,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 68 transitions, 1359 flow [2021-06-11 09:22:22,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 68 transitions, 303 flow, removed 528 selfloop flow, removed 0 redundant places. [2021-06-11 09:22:22,539 INFO L241 Difference]: Finished difference. Result has 137 places, 68 transitions, 303 flow [2021-06-11 09:22:22,539 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} [2021-06-11 09:22:22,539 INFO L343 CegarLoopForPetriNet]: 136 programPoint places, 1 predicate places. [2021-06-11 09:22:22,539 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:22,539 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 137 places, 68 transitions, 303 flow [2021-06-11 09:22:22,539 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 137 places, 68 transitions, 303 flow [2021-06-11 09:22:22,540 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 137 places, 68 transitions, 303 flow [2021-06-11 09:22:22,544 INFO L129 PetriNetUnfolder]: 0/68 cut-off events. [2021-06-11 09:22:22,544 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:22,545 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. [2021-06-11 09:22:22,545 INFO L151 LiptonReduction]: Number of co-enabled transitions 2178 [2021-06-11 09:22:22,547 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:22:22,547 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:22:22,547 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 8 [2021-06-11 09:22:22,547 INFO L480 AbstractCegarLoop]: Abstraction has has 137 places, 68 transitions, 303 flow [2021-06-11 09:22:22,548 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) [2021-06-11 09:22:22,548 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:22:22,548 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] [2021-06-11 09:22:22,548 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-06-11 09:22:22,548 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:22:22,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:22:22,548 INFO L82 PathProgramCache]: Analyzing trace with hash -103388295, now seen corresponding path program 1 times [2021-06-11 09:22:22,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:22:22,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207106211] [2021-06-11 09:22:22,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:22:22,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:22:22,552 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:22:22,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:22:22,553 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:22:22,557 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:22:22,557 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:22:22,557 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-06-11 09:22:22,557 WARN L342 ceAbstractionStarter]: 33 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:22:22,557 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 34 thread instances. [2021-06-11 09:22:22,582 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:22:22,583 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 09:22:22,583 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:22:22,583 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:22:22,583 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:22:22,583 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:22:22,583 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:22:22,583 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:22:22,583 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:22:22,583 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:22:22,584 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 176 places, 107 transitions, 1506 flow [2021-06-11 09:22:22,599 INFO L129 PetriNetUnfolder]: 0/209 cut-off events. [2021-06-11 09:22:22,599 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:22,599 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. [2021-06-11 09:22:22,599 INFO L82 GeneralOperation]: Start removeDead. Operand has 176 places, 107 transitions, 1506 flow [2021-06-11 09:22:22,600 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 174 places, 105 transitions, 1502 flow [2021-06-11 09:22:22,600 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:22,600 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 174 places, 105 transitions, 1502 flow [2021-06-11 09:22:22,601 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 174 places, 105 transitions, 1502 flow [2021-06-11 09:22:22,601 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 174 places, 105 transitions, 1502 flow [2021-06-11 09:22:22,613 INFO L129 PetriNetUnfolder]: 0/139 cut-off events. [2021-06-11 09:22:22,613 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:22,613 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. [2021-06-11 09:22:22,616 INFO L151 LiptonReduction]: Number of co-enabled transitions 7004 [2021-06-11 09:22:24,113 INFO L163 LiptonReduction]: Checked pairs total: 2873 [2021-06-11 09:22:24,113 INFO L165 LiptonReduction]: Total number of compositions: 34 [2021-06-11 09:22:24,113 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1513 [2021-06-11 09:22:24,114 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-06-11 09:22:24,114 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:24,114 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:22:24,114 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-06-11 09:22:24,114 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:22:24,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:22:24,114 INFO L82 PathProgramCache]: Analyzing trace with hash 81571, now seen corresponding path program 1 times [2021-06-11 09:22:24,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:22:24,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095387440] [2021-06-11 09:22:24,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:22:24,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:22:24,128 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:22:24,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:22:24,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:22:24,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095387440] [2021-06-11 09:22:24,131 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:22:24,131 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 09:22:24,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347591866] [2021-06-11 09:22:24,131 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:22:24,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:22:24,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:22:24,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:22:24,132 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 141 [2021-06-11 09:22:24,132 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) [2021-06-11 09:22:24,132 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:22:24,132 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 141 [2021-06-11 09:22:24,132 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:22:24,141 INFO L129 PetriNetUnfolder]: 0/70 cut-off events. [2021-06-11 09:22:24,141 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:24,141 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. [2021-06-11 09:22:24,141 INFO L132 encePairwiseOnDemand]: 139/141 looper letters, 0 selfloop transitions, 1 changer transitions 0/70 dead transitions. [2021-06-11 09:22:24,141 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 70 transitions, 1434 flow [2021-06-11 09:22:24,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:22:24,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:22:24,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 416 transitions. [2021-06-11 09:22:24,142 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.983451536643026 [2021-06-11 09:22:24,142 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 416 transitions. [2021-06-11 09:22:24,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 416 transitions. [2021-06-11 09:22:24,142 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:22:24,142 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 416 transitions. [2021-06-11 09:22:24,143 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) [2021-06-11 09:22:24,143 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) [2021-06-11 09:22:24,143 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) [2021-06-11 09:22:24,143 INFO L185 Difference]: Start difference. First operand has 140 places, 71 transitions, 1434 flow. Second operand 3 states and 416 transitions. [2021-06-11 09:22:24,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 70 transitions, 1434 flow [2021-06-11 09:22:24,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 70 transitions, 312 flow, removed 561 selfloop flow, removed 0 redundant places. [2021-06-11 09:22:24,152 INFO L241 Difference]: Finished difference. Result has 141 places, 70 transitions, 312 flow [2021-06-11 09:22:24,152 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} [2021-06-11 09:22:24,152 INFO L343 CegarLoopForPetriNet]: 140 programPoint places, 1 predicate places. [2021-06-11 09:22:24,153 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:24,153 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 141 places, 70 transitions, 312 flow [2021-06-11 09:22:24,153 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 141 places, 70 transitions, 312 flow [2021-06-11 09:22:24,153 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 141 places, 70 transitions, 312 flow [2021-06-11 09:22:24,158 INFO L129 PetriNetUnfolder]: 0/70 cut-off events. [2021-06-11 09:22:24,158 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:24,158 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. [2021-06-11 09:22:24,159 INFO L151 LiptonReduction]: Number of co-enabled transitions 2312 [2021-06-11 09:22:24,161 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:22:24,161 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:22:24,161 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 9 [2021-06-11 09:22:24,161 INFO L480 AbstractCegarLoop]: Abstraction has has 141 places, 70 transitions, 312 flow [2021-06-11 09:22:24,161 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) [2021-06-11 09:22:24,161 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:22:24,161 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] [2021-06-11 09:22:24,162 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-06-11 09:22:24,162 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:22:24,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:22:24,162 INFO L82 PathProgramCache]: Analyzing trace with hash -1249775589, now seen corresponding path program 1 times [2021-06-11 09:22:24,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:22:24,162 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270098801] [2021-06-11 09:22:24,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:22:24,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:22:24,166 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:22:24,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:22:24,167 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:22:24,172 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:22:24,172 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:22:24,172 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-06-11 09:22:24,172 WARN L342 ceAbstractionStarter]: 34 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:22:24,172 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 35 thread instances. [2021-06-11 09:22:24,197 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:22:24,198 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 09:22:24,198 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:22:24,198 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:22:24,198 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:22:24,198 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:22:24,198 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:22:24,198 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:22:24,198 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:22:24,198 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:22:24,199 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 181 places, 110 transitions, 1585 flow [2021-06-11 09:22:24,214 INFO L129 PetriNetUnfolder]: 0/215 cut-off events. [2021-06-11 09:22:24,215 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:24,215 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. [2021-06-11 09:22:24,215 INFO L82 GeneralOperation]: Start removeDead. Operand has 181 places, 110 transitions, 1585 flow [2021-06-11 09:22:24,216 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 179 places, 108 transitions, 1581 flow [2021-06-11 09:22:24,216 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:24,216 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 179 places, 108 transitions, 1581 flow [2021-06-11 09:22:24,216 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 179 places, 108 transitions, 1581 flow [2021-06-11 09:22:24,216 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 179 places, 108 transitions, 1581 flow [2021-06-11 09:22:24,228 INFO L129 PetriNetUnfolder]: 0/143 cut-off events. [2021-06-11 09:22:24,229 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:24,229 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. [2021-06-11 09:22:24,232 INFO L151 LiptonReduction]: Number of co-enabled transitions 7420 [2021-06-11 09:22:25,886 INFO L163 LiptonReduction]: Checked pairs total: 3045 [2021-06-11 09:22:25,886 INFO L165 LiptonReduction]: Total number of compositions: 35 [2021-06-11 09:22:25,886 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1670 [2021-06-11 09:22:25,887 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-06-11 09:22:25,887 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:25,887 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:22:25,887 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-06-11 09:22:25,887 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:22:25,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:22:25,887 INFO L82 PathProgramCache]: Analyzing trace with hash 86179, now seen corresponding path program 1 times [2021-06-11 09:22:25,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:22:25,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534596592] [2021-06-11 09:22:25,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:22:25,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:22:25,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:22:25,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:22:25,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:22:25,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534596592] [2021-06-11 09:22:25,894 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:22:25,894 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 09:22:25,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310422895] [2021-06-11 09:22:25,894 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:22:25,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:22:25,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:22:25,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:22:25,895 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 145 [2021-06-11 09:22:25,895 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) [2021-06-11 09:22:25,895 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:22:25,895 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 145 [2021-06-11 09:22:25,895 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:22:25,904 INFO L129 PetriNetUnfolder]: 0/72 cut-off events. [2021-06-11 09:22:25,905 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:25,905 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. [2021-06-11 09:22:25,905 INFO L132 encePairwiseOnDemand]: 143/145 looper letters, 0 selfloop transitions, 1 changer transitions 0/72 dead transitions. [2021-06-11 09:22:25,905 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 72 transitions, 1511 flow [2021-06-11 09:22:25,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:22:25,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:22:25,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 428 transitions. [2021-06-11 09:22:25,906 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9839080459770115 [2021-06-11 09:22:25,906 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 428 transitions. [2021-06-11 09:22:25,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 428 transitions. [2021-06-11 09:22:25,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:22:25,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 428 transitions. [2021-06-11 09:22:25,906 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) [2021-06-11 09:22:25,907 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) [2021-06-11 09:22:25,907 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) [2021-06-11 09:22:25,907 INFO L185 Difference]: Start difference. First operand has 144 places, 73 transitions, 1511 flow. Second operand 3 states and 428 transitions. [2021-06-11 09:22:25,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 72 transitions, 1511 flow [2021-06-11 09:22:25,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 72 transitions, 321 flow, removed 595 selfloop flow, removed 0 redundant places. [2021-06-11 09:22:25,915 INFO L241 Difference]: Finished difference. Result has 145 places, 72 transitions, 321 flow [2021-06-11 09:22:25,915 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} [2021-06-11 09:22:25,916 INFO L343 CegarLoopForPetriNet]: 144 programPoint places, 1 predicate places. [2021-06-11 09:22:25,916 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:25,916 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 145 places, 72 transitions, 321 flow [2021-06-11 09:22:25,916 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 145 places, 72 transitions, 321 flow [2021-06-11 09:22:25,916 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 145 places, 72 transitions, 321 flow [2021-06-11 09:22:25,921 INFO L129 PetriNetUnfolder]: 0/72 cut-off events. [2021-06-11 09:22:25,921 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:25,921 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. [2021-06-11 09:22:25,922 INFO L151 LiptonReduction]: Number of co-enabled transitions 2450 [2021-06-11 09:22:25,924 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:22:25,924 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:22:25,924 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 8 [2021-06-11 09:22:25,924 INFO L480 AbstractCegarLoop]: Abstraction has has 145 places, 72 transitions, 321 flow [2021-06-11 09:22:25,924 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) [2021-06-11 09:22:25,925 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:22:25,925 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] [2021-06-11 09:22:25,925 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-06-11 09:22:25,925 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:22:25,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:22:25,925 INFO L82 PathProgramCache]: Analyzing trace with hash 1758155444, now seen corresponding path program 1 times [2021-06-11 09:22:25,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:22:25,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084015366] [2021-06-11 09:22:25,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:22:25,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:22:25,929 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:22:25,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:22:25,931 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:22:25,934 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:22:25,935 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:22:25,935 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-06-11 09:22:25,935 WARN L342 ceAbstractionStarter]: 35 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:22:25,935 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 36 thread instances. [2021-06-11 09:22:25,960 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:22:25,960 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 09:22:25,960 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:22:25,960 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:22:25,960 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:22:25,960 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:22:25,961 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:22:25,961 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:22:25,961 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:22:25,961 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:22:25,961 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 186 places, 113 transitions, 1666 flow [2021-06-11 09:22:25,978 INFO L129 PetriNetUnfolder]: 0/221 cut-off events. [2021-06-11 09:22:25,978 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:25,978 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. [2021-06-11 09:22:25,978 INFO L82 GeneralOperation]: Start removeDead. Operand has 186 places, 113 transitions, 1666 flow [2021-06-11 09:22:25,979 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 184 places, 111 transitions, 1662 flow [2021-06-11 09:22:25,979 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:25,979 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 184 places, 111 transitions, 1662 flow [2021-06-11 09:22:25,979 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 184 places, 111 transitions, 1662 flow [2021-06-11 09:22:25,980 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 184 places, 111 transitions, 1662 flow [2021-06-11 09:22:25,993 INFO L129 PetriNetUnfolder]: 0/147 cut-off events. [2021-06-11 09:22:25,993 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:25,993 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. [2021-06-11 09:22:25,997 INFO L151 LiptonReduction]: Number of co-enabled transitions 7848 [2021-06-11 09:22:27,746 INFO L163 LiptonReduction]: Checked pairs total: 3222 [2021-06-11 09:22:27,746 INFO L165 LiptonReduction]: Total number of compositions: 36 [2021-06-11 09:22:27,746 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1767 [2021-06-11 09:22:27,747 INFO L129 PetriNetUnfolder]: 0/1 cut-off events. [2021-06-11 09:22:27,747 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:27,747 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:22:27,747 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-06-11 09:22:27,747 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:22:27,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:22:27,747 INFO L82 PathProgramCache]: Analyzing trace with hash 90915, now seen corresponding path program 1 times [2021-06-11 09:22:27,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:22:27,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556226830] [2021-06-11 09:22:27,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:22:27,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:22:27,753 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:22:27,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:22:27,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:22:27,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556226830] [2021-06-11 09:22:27,757 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:22:27,757 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 09:22:27,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429444970] [2021-06-11 09:22:27,757 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:22:27,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:22:27,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:22:27,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:22:27,758 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 149 [2021-06-11 09:22:27,758 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) [2021-06-11 09:22:27,758 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:22:27,758 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 149 [2021-06-11 09:22:27,758 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:22:27,768 INFO L129 PetriNetUnfolder]: 0/74 cut-off events. [2021-06-11 09:22:27,768 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:27,768 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. [2021-06-11 09:22:27,769 INFO L132 encePairwiseOnDemand]: 147/149 looper letters, 0 selfloop transitions, 1 changer transitions 0/74 dead transitions. [2021-06-11 09:22:27,769 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 74 transitions, 1590 flow [2021-06-11 09:22:27,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:22:27,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:22:27,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 440 transitions. [2021-06-11 09:22:27,769 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9843400447427293 [2021-06-11 09:22:27,769 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 440 transitions. [2021-06-11 09:22:27,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 440 transitions. [2021-06-11 09:22:27,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:22:27,770 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 440 transitions. [2021-06-11 09:22:27,770 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) [2021-06-11 09:22:27,771 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) [2021-06-11 09:22:27,771 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) [2021-06-11 09:22:27,771 INFO L185 Difference]: Start difference. First operand has 148 places, 75 transitions, 1590 flow. Second operand 3 states and 440 transitions. [2021-06-11 09:22:27,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 74 transitions, 1590 flow [2021-06-11 09:22:27,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 74 transitions, 330 flow, removed 630 selfloop flow, removed 0 redundant places. [2021-06-11 09:22:27,779 INFO L241 Difference]: Finished difference. Result has 149 places, 74 transitions, 330 flow [2021-06-11 09:22:27,780 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} [2021-06-11 09:22:27,780 INFO L343 CegarLoopForPetriNet]: 148 programPoint places, 1 predicate places. [2021-06-11 09:22:27,780 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:27,780 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 149 places, 74 transitions, 330 flow [2021-06-11 09:22:27,780 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 149 places, 74 transitions, 330 flow [2021-06-11 09:22:27,780 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 149 places, 74 transitions, 330 flow [2021-06-11 09:22:27,786 INFO L129 PetriNetUnfolder]: 0/74 cut-off events. [2021-06-11 09:22:27,786 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:27,786 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. [2021-06-11 09:22:27,787 INFO L151 LiptonReduction]: Number of co-enabled transitions 2592 [2021-06-11 09:22:27,789 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:22:27,789 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:22:27,789 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 9 [2021-06-11 09:22:27,790 INFO L480 AbstractCegarLoop]: Abstraction has has 149 places, 74 transitions, 330 flow [2021-06-11 09:22:27,790 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) [2021-06-11 09:22:27,790 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:22:27,790 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] [2021-06-11 09:22:27,790 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-06-11 09:22:27,790 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:22:27,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:22:27,790 INFO L82 PathProgramCache]: Analyzing trace with hash -620843554, now seen corresponding path program 1 times [2021-06-11 09:22:27,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:22:27,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212555003] [2021-06-11 09:22:27,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:22:27,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:22:27,796 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:22:27,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:22:27,798 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:22:27,805 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:22:27,805 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:22:27,805 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-06-11 09:22:27,805 WARN L342 ceAbstractionStarter]: 36 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:22:27,806 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 37 thread instances. [2021-06-11 09:22:27,833 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:22:27,833 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 09:22:27,833 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:22:27,833 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:22:27,833 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:22:27,833 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:22:27,833 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:22:27,833 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:22:27,833 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:22:27,833 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:22:27,834 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 191 places, 116 transitions, 1749 flow [2021-06-11 09:22:27,851 INFO L129 PetriNetUnfolder]: 0/227 cut-off events. [2021-06-11 09:22:27,851 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:27,852 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. [2021-06-11 09:22:27,852 INFO L82 GeneralOperation]: Start removeDead. Operand has 191 places, 116 transitions, 1749 flow [2021-06-11 09:22:27,853 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 189 places, 114 transitions, 1745 flow [2021-06-11 09:22:27,853 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:27,853 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 189 places, 114 transitions, 1745 flow [2021-06-11 09:22:27,853 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 189 places, 114 transitions, 1745 flow [2021-06-11 09:22:27,854 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 189 places, 114 transitions, 1745 flow [2021-06-11 09:22:27,867 INFO L129 PetriNetUnfolder]: 0/151 cut-off events. [2021-06-11 09:22:27,867 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:27,867 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. [2021-06-11 09:22:27,871 INFO L151 LiptonReduction]: Number of co-enabled transitions 8288 [2021-06-11 09:22:29,640 INFO L163 LiptonReduction]: Checked pairs total: 3404 [2021-06-11 09:22:29,640 INFO L165 LiptonReduction]: Total number of compositions: 37 [2021-06-11 09:22:29,640 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1787 [2021-06-11 09:22:29,641 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-06-11 09:22:29,641 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:29,641 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:22:29,641 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-06-11 09:22:29,641 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:22:29,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:22:29,641 INFO L82 PathProgramCache]: Analyzing trace with hash 95779, now seen corresponding path program 1 times [2021-06-11 09:22:29,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:22:29,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154804168] [2021-06-11 09:22:29,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:22:29,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:22:29,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:22:29,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:22:29,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:22:29,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154804168] [2021-06-11 09:22:29,649 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:22:29,649 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 09:22:29,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625621782] [2021-06-11 09:22:29,649 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:22:29,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:22:29,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:22:29,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:22:29,650 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 153 [2021-06-11 09:22:29,650 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) [2021-06-11 09:22:29,650 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:22:29,650 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 153 [2021-06-11 09:22:29,650 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:22:29,660 INFO L129 PetriNetUnfolder]: 0/76 cut-off events. [2021-06-11 09:22:29,661 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:29,661 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. [2021-06-11 09:22:29,661 INFO L132 encePairwiseOnDemand]: 151/153 looper letters, 0 selfloop transitions, 1 changer transitions 0/76 dead transitions. [2021-06-11 09:22:29,661 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 76 transitions, 1671 flow [2021-06-11 09:22:29,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:22:29,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:22:29,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 452 transitions. [2021-06-11 09:22:29,662 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9847494553376906 [2021-06-11 09:22:29,662 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 452 transitions. [2021-06-11 09:22:29,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 452 transitions. [2021-06-11 09:22:29,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:22:29,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 452 transitions. [2021-06-11 09:22:29,662 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) [2021-06-11 09:22:29,663 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) [2021-06-11 09:22:29,663 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) [2021-06-11 09:22:29,663 INFO L185 Difference]: Start difference. First operand has 152 places, 77 transitions, 1671 flow. Second operand 3 states and 452 transitions. [2021-06-11 09:22:29,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 76 transitions, 1671 flow [2021-06-11 09:22:29,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 76 transitions, 339 flow, removed 666 selfloop flow, removed 0 redundant places. [2021-06-11 09:22:29,672 INFO L241 Difference]: Finished difference. Result has 153 places, 76 transitions, 339 flow [2021-06-11 09:22:29,672 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} [2021-06-11 09:22:29,672 INFO L343 CegarLoopForPetriNet]: 152 programPoint places, 1 predicate places. [2021-06-11 09:22:29,673 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:29,673 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 153 places, 76 transitions, 339 flow [2021-06-11 09:22:29,673 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 153 places, 76 transitions, 339 flow [2021-06-11 09:22:29,673 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 153 places, 76 transitions, 339 flow [2021-06-11 09:22:29,679 INFO L129 PetriNetUnfolder]: 0/76 cut-off events. [2021-06-11 09:22:29,679 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:29,679 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. [2021-06-11 09:22:29,680 INFO L151 LiptonReduction]: Number of co-enabled transitions 2738 [2021-06-11 09:22:29,682 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:22:29,682 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:22:29,682 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 9 [2021-06-11 09:22:29,682 INFO L480 AbstractCegarLoop]: Abstraction has has 153 places, 76 transitions, 339 flow [2021-06-11 09:22:29,683 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) [2021-06-11 09:22:29,683 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:22:29,683 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] [2021-06-11 09:22:29,683 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-06-11 09:22:29,683 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:22:29,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:22:29,683 INFO L82 PathProgramCache]: Analyzing trace with hash -1594398209, now seen corresponding path program 1 times [2021-06-11 09:22:29,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:22:29,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353405758] [2021-06-11 09:22:29,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:22:29,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:22:29,689 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:22:29,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:22:29,690 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:22:29,693 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:22:29,693 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:22:29,693 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-06-11 09:22:29,693 WARN L342 ceAbstractionStarter]: 37 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:22:29,694 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 38 thread instances. [2021-06-11 09:22:29,721 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:22:29,721 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 09:22:29,721 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:22:29,721 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:22:29,721 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:22:29,721 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:22:29,721 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:22:29,721 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:22:29,721 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:22:29,722 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:22:29,722 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 196 places, 119 transitions, 1834 flow [2021-06-11 09:22:29,740 INFO L129 PetriNetUnfolder]: 0/233 cut-off events. [2021-06-11 09:22:29,741 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:29,741 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. [2021-06-11 09:22:29,741 INFO L82 GeneralOperation]: Start removeDead. Operand has 196 places, 119 transitions, 1834 flow [2021-06-11 09:22:29,742 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 194 places, 117 transitions, 1830 flow [2021-06-11 09:22:29,742 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:29,742 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 194 places, 117 transitions, 1830 flow [2021-06-11 09:22:29,742 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 194 places, 117 transitions, 1830 flow [2021-06-11 09:22:29,743 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 194 places, 117 transitions, 1830 flow [2021-06-11 09:22:29,758 INFO L129 PetriNetUnfolder]: 0/155 cut-off events. [2021-06-11 09:22:29,758 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:29,758 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. [2021-06-11 09:22:29,763 INFO L151 LiptonReduction]: Number of co-enabled transitions 8740 [2021-06-11 09:22:31,612 INFO L163 LiptonReduction]: Checked pairs total: 3591 [2021-06-11 09:22:31,612 INFO L165 LiptonReduction]: Total number of compositions: 38 [2021-06-11 09:22:31,612 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1870 [2021-06-11 09:22:31,613 INFO L129 PetriNetUnfolder]: 0/1 cut-off events. [2021-06-11 09:22:31,613 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:31,613 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:22:31,613 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-06-11 09:22:31,613 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:22:31,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:22:31,613 INFO L82 PathProgramCache]: Analyzing trace with hash 100771, now seen corresponding path program 1 times [2021-06-11 09:22:31,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:22:31,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002864515] [2021-06-11 09:22:31,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:22:31,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:22:31,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:22:31,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:22:31,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:22:31,620 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002864515] [2021-06-11 09:22:31,620 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:22:31,620 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 09:22:31,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348288348] [2021-06-11 09:22:31,620 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:22:31,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:22:31,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:22:31,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:22:31,621 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 157 [2021-06-11 09:22:31,621 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) [2021-06-11 09:22:31,621 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:22:31,621 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 157 [2021-06-11 09:22:31,621 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:22:31,632 INFO L129 PetriNetUnfolder]: 0/78 cut-off events. [2021-06-11 09:22:31,632 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:31,632 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. [2021-06-11 09:22:31,633 INFO L132 encePairwiseOnDemand]: 155/157 looper letters, 0 selfloop transitions, 1 changer transitions 0/78 dead transitions. [2021-06-11 09:22:31,633 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 78 transitions, 1754 flow [2021-06-11 09:22:31,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:22:31,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:22:31,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 464 transitions. [2021-06-11 09:22:31,633 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9851380042462845 [2021-06-11 09:22:31,633 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 464 transitions. [2021-06-11 09:22:31,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 464 transitions. [2021-06-11 09:22:31,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:22:31,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 464 transitions. [2021-06-11 09:22:31,634 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) [2021-06-11 09:22:31,635 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) [2021-06-11 09:22:31,635 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) [2021-06-11 09:22:31,635 INFO L185 Difference]: Start difference. First operand has 156 places, 79 transitions, 1754 flow. Second operand 3 states and 464 transitions. [2021-06-11 09:22:31,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 78 transitions, 1754 flow [2021-06-11 09:22:31,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 78 transitions, 348 flow, removed 703 selfloop flow, removed 0 redundant places. [2021-06-11 09:22:31,645 INFO L241 Difference]: Finished difference. Result has 157 places, 78 transitions, 348 flow [2021-06-11 09:22:31,645 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} [2021-06-11 09:22:31,645 INFO L343 CegarLoopForPetriNet]: 156 programPoint places, 1 predicate places. [2021-06-11 09:22:31,645 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:31,645 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 157 places, 78 transitions, 348 flow [2021-06-11 09:22:31,645 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 157 places, 78 transitions, 348 flow [2021-06-11 09:22:31,646 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 157 places, 78 transitions, 348 flow [2021-06-11 09:22:31,651 INFO L129 PetriNetUnfolder]: 0/78 cut-off events. [2021-06-11 09:22:31,651 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:31,651 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. [2021-06-11 09:22:31,652 INFO L151 LiptonReduction]: Number of co-enabled transitions 2888 [2021-06-11 09:22:31,654 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:22:31,654 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:22:31,654 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 9 [2021-06-11 09:22:31,655 INFO L480 AbstractCegarLoop]: Abstraction has has 157 places, 78 transitions, 348 flow [2021-06-11 09:22:31,655 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) [2021-06-11 09:22:31,655 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:22:31,655 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] [2021-06-11 09:22:31,655 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-06-11 09:22:31,655 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:22:31,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:22:31,655 INFO L82 PathProgramCache]: Analyzing trace with hash 1021538209, now seen corresponding path program 1 times [2021-06-11 09:22:31,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:22:31,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299954114] [2021-06-11 09:22:31,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:22:31,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:22:31,660 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:22:31,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:22:31,661 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:22:31,665 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:22:31,665 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:22:31,665 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-06-11 09:22:31,665 WARN L342 ceAbstractionStarter]: 38 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:22:31,665 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 39 thread instances. [2021-06-11 09:22:31,692 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:22:31,692 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 09:22:31,693 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:22:31,693 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:22:31,693 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:22:31,693 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:22:31,693 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:22:31,693 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:22:31,693 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:22:31,693 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:22:31,694 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 201 places, 122 transitions, 1921 flow [2021-06-11 09:22:31,712 INFO L129 PetriNetUnfolder]: 0/239 cut-off events. [2021-06-11 09:22:31,713 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:31,713 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. [2021-06-11 09:22:31,713 INFO L82 GeneralOperation]: Start removeDead. Operand has 201 places, 122 transitions, 1921 flow [2021-06-11 09:22:31,714 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 199 places, 120 transitions, 1917 flow [2021-06-11 09:22:31,714 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:31,714 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 199 places, 120 transitions, 1917 flow [2021-06-11 09:22:31,714 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 199 places, 120 transitions, 1917 flow [2021-06-11 09:22:31,715 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 199 places, 120 transitions, 1917 flow [2021-06-11 09:22:31,729 INFO L129 PetriNetUnfolder]: 0/159 cut-off events. [2021-06-11 09:22:31,730 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:31,730 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. [2021-06-11 09:22:31,734 INFO L151 LiptonReduction]: Number of co-enabled transitions 9204 [2021-06-11 09:22:33,741 INFO L163 LiptonReduction]: Checked pairs total: 3783 [2021-06-11 09:22:33,741 INFO L165 LiptonReduction]: Total number of compositions: 39 [2021-06-11 09:22:33,742 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2028 [2021-06-11 09:22:33,742 INFO L129 PetriNetUnfolder]: 0/1 cut-off events. [2021-06-11 09:22:33,742 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:33,742 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:22:33,742 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-06-11 09:22:33,742 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:22:33,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:22:33,743 INFO L82 PathProgramCache]: Analyzing trace with hash 105891, now seen corresponding path program 1 times [2021-06-11 09:22:33,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:22:33,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911216430] [2021-06-11 09:22:33,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:22:33,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:22:33,749 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:22:33,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:22:33,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:22:33,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911216430] [2021-06-11 09:22:33,751 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:22:33,751 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 09:22:33,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121120391] [2021-06-11 09:22:33,752 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:22:33,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:22:33,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:22:33,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:22:33,752 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 161 [2021-06-11 09:22:33,753 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) [2021-06-11 09:22:33,753 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:22:33,753 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 161 [2021-06-11 09:22:33,753 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:22:33,764 INFO L129 PetriNetUnfolder]: 0/80 cut-off events. [2021-06-11 09:22:33,764 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:33,764 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. [2021-06-11 09:22:33,764 INFO L132 encePairwiseOnDemand]: 159/161 looper letters, 0 selfloop transitions, 1 changer transitions 0/80 dead transitions. [2021-06-11 09:22:33,764 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 80 transitions, 1839 flow [2021-06-11 09:22:33,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:22:33,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:22:33,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 476 transitions. [2021-06-11 09:22:33,765 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9855072463768116 [2021-06-11 09:22:33,765 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 476 transitions. [2021-06-11 09:22:33,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 476 transitions. [2021-06-11 09:22:33,765 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:22:33,765 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 476 transitions. [2021-06-11 09:22:33,766 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) [2021-06-11 09:22:33,766 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) [2021-06-11 09:22:33,766 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) [2021-06-11 09:22:33,766 INFO L185 Difference]: Start difference. First operand has 160 places, 81 transitions, 1839 flow. Second operand 3 states and 476 transitions. [2021-06-11 09:22:33,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 80 transitions, 1839 flow [2021-06-11 09:22:33,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 80 transitions, 357 flow, removed 741 selfloop flow, removed 0 redundant places. [2021-06-11 09:22:33,777 INFO L241 Difference]: Finished difference. Result has 161 places, 80 transitions, 357 flow [2021-06-11 09:22:33,777 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} [2021-06-11 09:22:33,777 INFO L343 CegarLoopForPetriNet]: 160 programPoint places, 1 predicate places. [2021-06-11 09:22:33,777 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:33,777 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 161 places, 80 transitions, 357 flow [2021-06-11 09:22:33,777 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 161 places, 80 transitions, 357 flow [2021-06-11 09:22:33,778 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 161 places, 80 transitions, 357 flow [2021-06-11 09:22:33,784 INFO L129 PetriNetUnfolder]: 0/80 cut-off events. [2021-06-11 09:22:33,784 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:33,784 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. [2021-06-11 09:22:33,785 INFO L151 LiptonReduction]: Number of co-enabled transitions 3042 [2021-06-11 09:22:33,787 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:22:33,787 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:22:33,787 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 10 [2021-06-11 09:22:33,787 INFO L480 AbstractCegarLoop]: Abstraction has has 161 places, 80 transitions, 357 flow [2021-06-11 09:22:33,788 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) [2021-06-11 09:22:33,788 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:22:33,788 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] [2021-06-11 09:22:33,788 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-06-11 09:22:33,788 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:22:33,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:22:33,788 INFO L82 PathProgramCache]: Analyzing trace with hash 131279706, now seen corresponding path program 1 times [2021-06-11 09:22:33,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:22:33,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720081168] [2021-06-11 09:22:33,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:22:33,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:22:33,794 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:22:33,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:22:33,795 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:22:33,799 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:22:33,799 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:22:33,799 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-06-11 09:22:33,799 WARN L342 ceAbstractionStarter]: 39 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:22:33,800 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 40 thread instances. [2021-06-11 09:22:33,828 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:22:33,828 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 09:22:33,828 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:22:33,828 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:22:33,828 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:22:33,828 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:22:33,828 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:22:33,828 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:22:33,828 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:22:33,828 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:22:33,829 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 206 places, 125 transitions, 2010 flow [2021-06-11 09:22:33,849 INFO L129 PetriNetUnfolder]: 0/245 cut-off events. [2021-06-11 09:22:33,849 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:33,849 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. [2021-06-11 09:22:33,849 INFO L82 GeneralOperation]: Start removeDead. Operand has 206 places, 125 transitions, 2010 flow [2021-06-11 09:22:33,850 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 204 places, 123 transitions, 2006 flow [2021-06-11 09:22:33,850 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:33,850 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 204 places, 123 transitions, 2006 flow [2021-06-11 09:22:33,850 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 204 places, 123 transitions, 2006 flow [2021-06-11 09:22:33,851 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 204 places, 123 transitions, 2006 flow [2021-06-11 09:22:33,866 INFO L129 PetriNetUnfolder]: 0/163 cut-off events. [2021-06-11 09:22:33,866 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:33,867 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. [2021-06-11 09:22:33,871 INFO L151 LiptonReduction]: Number of co-enabled transitions 9680 [2021-06-11 09:22:36,037 INFO L163 LiptonReduction]: Checked pairs total: 3980 [2021-06-11 09:22:36,037 INFO L165 LiptonReduction]: Total number of compositions: 40 [2021-06-11 09:22:36,037 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2187 [2021-06-11 09:22:36,038 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-06-11 09:22:36,038 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:36,038 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:22:36,038 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-06-11 09:22:36,038 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:22:36,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:22:36,038 INFO L82 PathProgramCache]: Analyzing trace with hash 111139, now seen corresponding path program 1 times [2021-06-11 09:22:36,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:22:36,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735292389] [2021-06-11 09:22:36,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:22:36,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:22:36,053 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:22:36,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:22:36,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:22:36,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735292389] [2021-06-11 09:22:36,056 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:22:36,056 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 09:22:36,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631997527] [2021-06-11 09:22:36,056 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:22:36,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:22:36,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:22:36,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:22:36,057 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 165 [2021-06-11 09:22:36,057 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) [2021-06-11 09:22:36,057 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:22:36,057 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 165 [2021-06-11 09:22:36,057 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:22:36,069 INFO L129 PetriNetUnfolder]: 0/82 cut-off events. [2021-06-11 09:22:36,069 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:36,069 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. [2021-06-11 09:22:36,069 INFO L132 encePairwiseOnDemand]: 163/165 looper letters, 0 selfloop transitions, 1 changer transitions 0/82 dead transitions. [2021-06-11 09:22:36,070 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 82 transitions, 1926 flow [2021-06-11 09:22:36,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:22:36,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:22:36,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 488 transitions. [2021-06-11 09:22:36,070 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9858585858585859 [2021-06-11 09:22:36,071 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 488 transitions. [2021-06-11 09:22:36,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 488 transitions. [2021-06-11 09:22:36,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:22:36,071 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 488 transitions. [2021-06-11 09:22:36,072 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) [2021-06-11 09:22:36,072 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) [2021-06-11 09:22:36,073 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) [2021-06-11 09:22:36,073 INFO L185 Difference]: Start difference. First operand has 164 places, 83 transitions, 1926 flow. Second operand 3 states and 488 transitions. [2021-06-11 09:22:36,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 82 transitions, 1926 flow [2021-06-11 09:22:36,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 82 transitions, 366 flow, removed 780 selfloop flow, removed 0 redundant places. [2021-06-11 09:22:36,086 INFO L241 Difference]: Finished difference. Result has 165 places, 82 transitions, 366 flow [2021-06-11 09:22:36,086 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} [2021-06-11 09:22:36,086 INFO L343 CegarLoopForPetriNet]: 164 programPoint places, 1 predicate places. [2021-06-11 09:22:36,086 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:36,086 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 165 places, 82 transitions, 366 flow [2021-06-11 09:22:36,086 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 165 places, 82 transitions, 366 flow [2021-06-11 09:22:36,086 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 165 places, 82 transitions, 366 flow [2021-06-11 09:22:36,093 INFO L129 PetriNetUnfolder]: 0/82 cut-off events. [2021-06-11 09:22:36,093 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:36,093 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. [2021-06-11 09:22:36,094 INFO L151 LiptonReduction]: Number of co-enabled transitions 3200 [2021-06-11 09:22:36,096 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:22:36,096 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:22:36,096 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 10 [2021-06-11 09:22:36,097 INFO L480 AbstractCegarLoop]: Abstraction has has 165 places, 82 transitions, 366 flow [2021-06-11 09:22:36,097 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) [2021-06-11 09:22:36,097 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:22:36,097 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] [2021-06-11 09:22:36,097 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-06-11 09:22:36,097 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:22:36,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:22:36,097 INFO L82 PathProgramCache]: Analyzing trace with hash -92914844, now seen corresponding path program 1 times [2021-06-11 09:22:36,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:22:36,097 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968850758] [2021-06-11 09:22:36,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:22:36,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:22:36,103 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:22:36,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:22:36,104 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:22:36,108 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:22:36,108 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:22:36,108 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-06-11 09:22:36,108 WARN L342 ceAbstractionStarter]: 40 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:22:36,108 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 41 thread instances. [2021-06-11 09:22:36,138 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:22:36,139 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 09:22:36,139 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:22:36,139 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:22:36,139 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:22:36,139 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:22:36,139 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:22:36,139 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:22:36,139 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:22:36,139 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:22:36,140 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 211 places, 128 transitions, 2101 flow [2021-06-11 09:22:36,161 INFO L129 PetriNetUnfolder]: 0/251 cut-off events. [2021-06-11 09:22:36,161 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:36,161 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. [2021-06-11 09:22:36,161 INFO L82 GeneralOperation]: Start removeDead. Operand has 211 places, 128 transitions, 2101 flow [2021-06-11 09:22:36,162 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 209 places, 126 transitions, 2097 flow [2021-06-11 09:22:36,162 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:36,162 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 209 places, 126 transitions, 2097 flow [2021-06-11 09:22:36,162 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 209 places, 126 transitions, 2097 flow [2021-06-11 09:22:36,163 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 209 places, 126 transitions, 2097 flow [2021-06-11 09:22:36,179 INFO L129 PetriNetUnfolder]: 0/167 cut-off events. [2021-06-11 09:22:36,179 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:36,179 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. [2021-06-11 09:22:36,185 INFO L151 LiptonReduction]: Number of co-enabled transitions 10168 [2021-06-11 09:22:38,502 INFO L163 LiptonReduction]: Checked pairs total: 4182 [2021-06-11 09:22:38,502 INFO L165 LiptonReduction]: Total number of compositions: 41 [2021-06-11 09:22:38,502 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2340 [2021-06-11 09:22:38,503 INFO L129 PetriNetUnfolder]: 0/1 cut-off events. [2021-06-11 09:22:38,503 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:38,503 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:22:38,503 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-06-11 09:22:38,503 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:22:38,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:22:38,503 INFO L82 PathProgramCache]: Analyzing trace with hash 116515, now seen corresponding path program 1 times [2021-06-11 09:22:38,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:22:38,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607353745] [2021-06-11 09:22:38,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:22:38,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:22:38,510 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:22:38,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:22:38,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:22:38,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607353745] [2021-06-11 09:22:38,512 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:22:38,512 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 09:22:38,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956832290] [2021-06-11 09:22:38,512 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:22:38,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:22:38,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:22:38,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:22:38,513 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 169 [2021-06-11 09:22:38,513 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) [2021-06-11 09:22:38,513 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:22:38,513 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 169 [2021-06-11 09:22:38,513 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:22:38,525 INFO L129 PetriNetUnfolder]: 0/84 cut-off events. [2021-06-11 09:22:38,525 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:38,525 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. [2021-06-11 09:22:38,525 INFO L132 encePairwiseOnDemand]: 167/169 looper letters, 0 selfloop transitions, 1 changer transitions 0/84 dead transitions. [2021-06-11 09:22:38,525 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 84 transitions, 2015 flow [2021-06-11 09:22:38,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:22:38,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:22:38,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 500 transitions. [2021-06-11 09:22:38,526 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9861932938856016 [2021-06-11 09:22:38,526 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 500 transitions. [2021-06-11 09:22:38,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 500 transitions. [2021-06-11 09:22:38,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:22:38,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 500 transitions. [2021-06-11 09:22:38,527 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) [2021-06-11 09:22:38,527 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) [2021-06-11 09:22:38,527 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) [2021-06-11 09:22:38,527 INFO L185 Difference]: Start difference. First operand has 168 places, 85 transitions, 2015 flow. Second operand 3 states and 500 transitions. [2021-06-11 09:22:38,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 84 transitions, 2015 flow [2021-06-11 09:22:38,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 84 transitions, 375 flow, removed 820 selfloop flow, removed 0 redundant places. [2021-06-11 09:22:38,543 INFO L241 Difference]: Finished difference. Result has 169 places, 84 transitions, 375 flow [2021-06-11 09:22:38,543 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} [2021-06-11 09:22:38,544 INFO L343 CegarLoopForPetriNet]: 168 programPoint places, 1 predicate places. [2021-06-11 09:22:38,544 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:38,544 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 169 places, 84 transitions, 375 flow [2021-06-11 09:22:38,544 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 169 places, 84 transitions, 375 flow [2021-06-11 09:22:38,544 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 169 places, 84 transitions, 375 flow [2021-06-11 09:22:38,550 INFO L129 PetriNetUnfolder]: 0/84 cut-off events. [2021-06-11 09:22:38,551 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:38,551 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. [2021-06-11 09:22:38,552 INFO L151 LiptonReduction]: Number of co-enabled transitions 3362 [2021-06-11 09:22:38,555 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:22:38,555 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:22:38,555 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 11 [2021-06-11 09:22:38,555 INFO L480 AbstractCegarLoop]: Abstraction has has 169 places, 84 transitions, 375 flow [2021-06-11 09:22:38,555 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) [2021-06-11 09:22:38,555 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:22:38,555 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] [2021-06-11 09:22:38,555 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-06-11 09:22:38,555 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:22:38,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:22:38,556 INFO L82 PathProgramCache]: Analyzing trace with hash -2062937915, now seen corresponding path program 1 times [2021-06-11 09:22:38,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:22:38,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648710051] [2021-06-11 09:22:38,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:22:38,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:22:38,564 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:22:38,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:22:38,566 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:22:38,570 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:22:38,570 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:22:38,570 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-06-11 09:22:38,570 WARN L342 ceAbstractionStarter]: 41 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:22:38,570 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 42 thread instances. [2021-06-11 09:22:38,610 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:22:38,611 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 09:22:38,611 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:22:38,611 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:22:38,611 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:22:38,611 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:22:38,611 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:22:38,611 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:22:38,611 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:22:38,611 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:22:38,613 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 216 places, 131 transitions, 2194 flow [2021-06-11 09:22:38,634 INFO L129 PetriNetUnfolder]: 0/257 cut-off events. [2021-06-11 09:22:38,635 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:38,635 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. [2021-06-11 09:22:38,635 INFO L82 GeneralOperation]: Start removeDead. Operand has 216 places, 131 transitions, 2194 flow [2021-06-11 09:22:38,636 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 214 places, 129 transitions, 2190 flow [2021-06-11 09:22:38,636 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:38,636 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 214 places, 129 transitions, 2190 flow [2021-06-11 09:22:38,636 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 214 places, 129 transitions, 2190 flow [2021-06-11 09:22:38,637 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 214 places, 129 transitions, 2190 flow [2021-06-11 09:22:38,653 INFO L129 PetriNetUnfolder]: 0/171 cut-off events. [2021-06-11 09:22:38,653 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:38,653 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. [2021-06-11 09:22:38,659 INFO L151 LiptonReduction]: Number of co-enabled transitions 10668 [2021-06-11 09:22:40,984 INFO L163 LiptonReduction]: Checked pairs total: 4389 [2021-06-11 09:22:40,984 INFO L165 LiptonReduction]: Total number of compositions: 42 [2021-06-11 09:22:40,984 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2348 [2021-06-11 09:22:40,985 INFO L129 PetriNetUnfolder]: 0/1 cut-off events. [2021-06-11 09:22:40,985 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:40,985 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:22:40,985 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-06-11 09:22:40,985 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:22:40,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:22:40,985 INFO L82 PathProgramCache]: Analyzing trace with hash 122019, now seen corresponding path program 1 times [2021-06-11 09:22:40,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:22:40,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168813667] [2021-06-11 09:22:40,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:22:40,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:22:40,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:22:40,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:22:40,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:22:40,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168813667] [2021-06-11 09:22:40,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:22:40,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 09:22:40,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849102456] [2021-06-11 09:22:40,995 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:22:40,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:22:40,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:22:40,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:22:40,996 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 173 [2021-06-11 09:22:40,996 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) [2021-06-11 09:22:40,996 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:22:40,996 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 173 [2021-06-11 09:22:40,996 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:22:41,009 INFO L129 PetriNetUnfolder]: 0/86 cut-off events. [2021-06-11 09:22:41,009 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:41,009 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. [2021-06-11 09:22:41,009 INFO L132 encePairwiseOnDemand]: 171/173 looper letters, 0 selfloop transitions, 1 changer transitions 0/86 dead transitions. [2021-06-11 09:22:41,009 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 86 transitions, 2106 flow [2021-06-11 09:22:41,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:22:41,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:22:41,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 512 transitions. [2021-06-11 09:22:41,010 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9865125240847784 [2021-06-11 09:22:41,010 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 512 transitions. [2021-06-11 09:22:41,010 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 512 transitions. [2021-06-11 09:22:41,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:22:41,010 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 512 transitions. [2021-06-11 09:22:41,011 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) [2021-06-11 09:22:41,011 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) [2021-06-11 09:22:41,011 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) [2021-06-11 09:22:41,011 INFO L185 Difference]: Start difference. First operand has 172 places, 87 transitions, 2106 flow. Second operand 3 states and 512 transitions. [2021-06-11 09:22:41,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 86 transitions, 2106 flow [2021-06-11 09:22:41,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 86 transitions, 384 flow, removed 861 selfloop flow, removed 0 redundant places. [2021-06-11 09:22:41,030 INFO L241 Difference]: Finished difference. Result has 173 places, 86 transitions, 384 flow [2021-06-11 09:22:41,030 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} [2021-06-11 09:22:41,030 INFO L343 CegarLoopForPetriNet]: 172 programPoint places, 1 predicate places. [2021-06-11 09:22:41,030 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:41,030 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 173 places, 86 transitions, 384 flow [2021-06-11 09:22:41,030 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 173 places, 86 transitions, 384 flow [2021-06-11 09:22:41,031 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 173 places, 86 transitions, 384 flow [2021-06-11 09:22:41,037 INFO L129 PetriNetUnfolder]: 0/86 cut-off events. [2021-06-11 09:22:41,038 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:41,038 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. [2021-06-11 09:22:41,039 INFO L151 LiptonReduction]: Number of co-enabled transitions 3528 [2021-06-11 09:22:41,041 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:22:41,041 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:22:41,041 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 11 [2021-06-11 09:22:41,042 INFO L480 AbstractCegarLoop]: Abstraction has has 173 places, 86 transitions, 384 flow [2021-06-11 09:22:41,042 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) [2021-06-11 09:22:41,042 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:22:41,042 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] [2021-06-11 09:22:41,042 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-06-11 09:22:41,042 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:22:41,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:22:41,042 INFO L82 PathProgramCache]: Analyzing trace with hash 1248466727, now seen corresponding path program 1 times [2021-06-11 09:22:41,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:22:41,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738512578] [2021-06-11 09:22:41,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:22:41,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:22:41,049 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:22:41,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:22:41,050 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:22:41,054 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:22:41,054 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:22:41,054 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-06-11 09:22:41,054 WARN L342 ceAbstractionStarter]: 42 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:22:41,054 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 43 thread instances. [2021-06-11 09:22:41,097 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:22:41,097 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 09:22:41,097 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:22:41,098 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:22:41,098 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:22:41,098 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:22:41,098 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:22:41,098 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:22:41,098 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:22:41,098 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:22:41,099 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 221 places, 134 transitions, 2289 flow [2021-06-11 09:22:41,122 INFO L129 PetriNetUnfolder]: 0/263 cut-off events. [2021-06-11 09:22:41,122 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:41,122 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. [2021-06-11 09:22:41,122 INFO L82 GeneralOperation]: Start removeDead. Operand has 221 places, 134 transitions, 2289 flow [2021-06-11 09:22:41,123 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 219 places, 132 transitions, 2285 flow [2021-06-11 09:22:41,123 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:41,123 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 219 places, 132 transitions, 2285 flow [2021-06-11 09:22:41,123 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 219 places, 132 transitions, 2285 flow [2021-06-11 09:22:41,124 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 219 places, 132 transitions, 2285 flow [2021-06-11 09:22:41,142 INFO L129 PetriNetUnfolder]: 0/175 cut-off events. [2021-06-11 09:22:41,142 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:41,142 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. [2021-06-11 09:22:41,148 INFO L151 LiptonReduction]: Number of co-enabled transitions 11180 [2021-06-11 09:22:43,596 INFO L163 LiptonReduction]: Checked pairs total: 4601 [2021-06-11 09:22:43,596 INFO L165 LiptonReduction]: Total number of compositions: 43 [2021-06-11 09:22:43,596 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2473 [2021-06-11 09:22:43,597 INFO L129 PetriNetUnfolder]: 0/1 cut-off events. [2021-06-11 09:22:43,597 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:43,597 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:22:43,597 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-06-11 09:22:43,597 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:22:43,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:22:43,597 INFO L82 PathProgramCache]: Analyzing trace with hash 127651, now seen corresponding path program 1 times [2021-06-11 09:22:43,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:22:43,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125803283] [2021-06-11 09:22:43,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:22:43,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:22:43,608 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:22:43,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:22:43,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:22:43,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125803283] [2021-06-11 09:22:43,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:22:43,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 09:22:43,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574865753] [2021-06-11 09:22:43,611 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:22:43,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:22:43,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:22:43,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:22:43,612 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 177 [2021-06-11 09:22:43,612 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) [2021-06-11 09:22:43,612 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:22:43,612 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 177 [2021-06-11 09:22:43,612 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:22:43,625 INFO L129 PetriNetUnfolder]: 0/88 cut-off events. [2021-06-11 09:22:43,625 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:43,625 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. [2021-06-11 09:22:43,626 INFO L132 encePairwiseOnDemand]: 175/177 looper letters, 0 selfloop transitions, 1 changer transitions 0/88 dead transitions. [2021-06-11 09:22:43,626 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 88 transitions, 2199 flow [2021-06-11 09:22:43,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:22:43,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:22:43,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 524 transitions. [2021-06-11 09:22:43,626 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9868173258003766 [2021-06-11 09:22:43,626 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 524 transitions. [2021-06-11 09:22:43,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 524 transitions. [2021-06-11 09:22:43,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:22:43,627 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 524 transitions. [2021-06-11 09:22:43,627 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) [2021-06-11 09:22:43,628 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) [2021-06-11 09:22:43,628 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) [2021-06-11 09:22:43,628 INFO L185 Difference]: Start difference. First operand has 176 places, 89 transitions, 2199 flow. Second operand 3 states and 524 transitions. [2021-06-11 09:22:43,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 88 transitions, 2199 flow [2021-06-11 09:22:43,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 88 transitions, 393 flow, removed 903 selfloop flow, removed 0 redundant places. [2021-06-11 09:22:43,647 INFO L241 Difference]: Finished difference. Result has 177 places, 88 transitions, 393 flow [2021-06-11 09:22:43,647 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} [2021-06-11 09:22:43,647 INFO L343 CegarLoopForPetriNet]: 176 programPoint places, 1 predicate places. [2021-06-11 09:22:43,647 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:43,648 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 177 places, 88 transitions, 393 flow [2021-06-11 09:22:43,648 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 177 places, 88 transitions, 393 flow [2021-06-11 09:22:43,648 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 177 places, 88 transitions, 393 flow [2021-06-11 09:22:43,655 INFO L129 PetriNetUnfolder]: 0/88 cut-off events. [2021-06-11 09:22:43,655 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:43,655 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. [2021-06-11 09:22:43,656 INFO L151 LiptonReduction]: Number of co-enabled transitions 3698 [2021-06-11 09:22:43,659 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:22:43,659 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:22:43,659 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 12 [2021-06-11 09:22:43,659 INFO L480 AbstractCegarLoop]: Abstraction has has 177 places, 88 transitions, 393 flow [2021-06-11 09:22:43,659 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) [2021-06-11 09:22:43,659 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:22:43,659 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] [2021-06-11 09:22:43,660 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-06-11 09:22:43,660 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:22:43,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:22:43,660 INFO L82 PathProgramCache]: Analyzing trace with hash 1295684672, now seen corresponding path program 1 times [2021-06-11 09:22:43,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:22:43,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321870067] [2021-06-11 09:22:43,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:22:43,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:22:43,666 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:22:43,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:22:43,668 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:22:43,672 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:22:43,672 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:22:43,673 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-06-11 09:22:43,673 WARN L342 ceAbstractionStarter]: 43 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:22:43,673 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 44 thread instances. [2021-06-11 09:22:43,704 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:22:43,705 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 09:22:43,705 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:22:43,705 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:22:43,705 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:22:43,705 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:22:43,705 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:22:43,705 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:22:43,705 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:22:43,705 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:22:43,706 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 226 places, 137 transitions, 2386 flow [2021-06-11 09:22:43,730 INFO L129 PetriNetUnfolder]: 0/269 cut-off events. [2021-06-11 09:22:43,730 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:43,730 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. [2021-06-11 09:22:43,730 INFO L82 GeneralOperation]: Start removeDead. Operand has 226 places, 137 transitions, 2386 flow [2021-06-11 09:22:43,731 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 224 places, 135 transitions, 2382 flow [2021-06-11 09:22:43,731 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:43,731 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 224 places, 135 transitions, 2382 flow [2021-06-11 09:22:43,732 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 224 places, 135 transitions, 2382 flow [2021-06-11 09:22:43,732 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 224 places, 135 transitions, 2382 flow [2021-06-11 09:22:43,750 INFO L129 PetriNetUnfolder]: 0/179 cut-off events. [2021-06-11 09:22:43,751 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:43,751 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. [2021-06-11 09:22:43,757 INFO L151 LiptonReduction]: Number of co-enabled transitions 11704 [2021-06-11 09:22:46,308 INFO L163 LiptonReduction]: Checked pairs total: 4818 [2021-06-11 09:22:46,308 INFO L165 LiptonReduction]: Total number of compositions: 44 [2021-06-11 09:22:46,308 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2577 [2021-06-11 09:22:46,309 INFO L129 PetriNetUnfolder]: 0/1 cut-off events. [2021-06-11 09:22:46,309 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:46,309 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:22:46,309 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-06-11 09:22:46,309 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:22:46,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:22:46,309 INFO L82 PathProgramCache]: Analyzing trace with hash 133411, now seen corresponding path program 1 times [2021-06-11 09:22:46,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:22:46,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107313302] [2021-06-11 09:22:46,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:22:46,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:22:46,316 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:22:46,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:22:46,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:22:46,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107313302] [2021-06-11 09:22:46,318 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:22:46,318 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 09:22:46,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710849427] [2021-06-11 09:22:46,318 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:22:46,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:22:46,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:22:46,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:22:46,319 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 181 [2021-06-11 09:22:46,319 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) [2021-06-11 09:22:46,319 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:22:46,319 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 181 [2021-06-11 09:22:46,319 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:22:46,333 INFO L129 PetriNetUnfolder]: 0/90 cut-off events. [2021-06-11 09:22:46,333 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:46,333 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. [2021-06-11 09:22:46,333 INFO L132 encePairwiseOnDemand]: 179/181 looper letters, 0 selfloop transitions, 1 changer transitions 0/90 dead transitions. [2021-06-11 09:22:46,333 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 90 transitions, 2294 flow [2021-06-11 09:22:46,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:22:46,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:22:46,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 536 transitions. [2021-06-11 09:22:46,334 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9871086556169429 [2021-06-11 09:22:46,334 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 536 transitions. [2021-06-11 09:22:46,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 536 transitions. [2021-06-11 09:22:46,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:22:46,334 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 536 transitions. [2021-06-11 09:22:46,335 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) [2021-06-11 09:22:46,335 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) [2021-06-11 09:22:46,335 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) [2021-06-11 09:22:46,335 INFO L185 Difference]: Start difference. First operand has 180 places, 91 transitions, 2294 flow. Second operand 3 states and 536 transitions. [2021-06-11 09:22:46,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 90 transitions, 2294 flow [2021-06-11 09:22:46,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 90 transitions, 402 flow, removed 946 selfloop flow, removed 0 redundant places. [2021-06-11 09:22:46,356 INFO L241 Difference]: Finished difference. Result has 181 places, 90 transitions, 402 flow [2021-06-11 09:22:46,357 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} [2021-06-11 09:22:46,357 INFO L343 CegarLoopForPetriNet]: 180 programPoint places, 1 predicate places. [2021-06-11 09:22:46,357 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:46,357 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 181 places, 90 transitions, 402 flow [2021-06-11 09:22:46,357 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 181 places, 90 transitions, 402 flow [2021-06-11 09:22:46,357 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 181 places, 90 transitions, 402 flow [2021-06-11 09:22:46,364 INFO L129 PetriNetUnfolder]: 0/90 cut-off events. [2021-06-11 09:22:46,364 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:46,365 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. [2021-06-11 09:22:46,366 INFO L151 LiptonReduction]: Number of co-enabled transitions 3872 [2021-06-11 09:22:46,368 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:22:46,368 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:22:46,368 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 11 [2021-06-11 09:22:46,369 INFO L480 AbstractCegarLoop]: Abstraction has has 181 places, 90 transitions, 402 flow [2021-06-11 09:22:46,369 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) [2021-06-11 09:22:46,369 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:22:46,369 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] [2021-06-11 09:22:46,369 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-06-11 09:22:46,369 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:22:46,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:22:46,369 INFO L82 PathProgramCache]: Analyzing trace with hash -199292694, now seen corresponding path program 1 times [2021-06-11 09:22:46,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:22:46,369 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822674451] [2021-06-11 09:22:46,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:22:46,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:22:46,376 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:22:46,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:22:46,377 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:22:46,381 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:22:46,382 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:22:46,382 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-06-11 09:22:46,382 WARN L342 ceAbstractionStarter]: 44 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:22:46,382 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 45 thread instances. [2021-06-11 09:22:46,418 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:22:46,418 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 09:22:46,419 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:22:46,419 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:22:46,419 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:22:46,419 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:22:46,419 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:22:46,419 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:22:46,419 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:22:46,419 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:22:46,420 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 231 places, 140 transitions, 2485 flow [2021-06-11 09:22:46,444 INFO L129 PetriNetUnfolder]: 0/275 cut-off events. [2021-06-11 09:22:46,445 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:46,445 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. [2021-06-11 09:22:46,445 INFO L82 GeneralOperation]: Start removeDead. Operand has 231 places, 140 transitions, 2485 flow [2021-06-11 09:22:46,446 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 229 places, 138 transitions, 2481 flow [2021-06-11 09:22:46,446 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:46,446 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 229 places, 138 transitions, 2481 flow [2021-06-11 09:22:46,446 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 229 places, 138 transitions, 2481 flow [2021-06-11 09:22:46,447 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 229 places, 138 transitions, 2481 flow [2021-06-11 09:22:46,466 INFO L129 PetriNetUnfolder]: 0/183 cut-off events. [2021-06-11 09:22:46,466 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:46,466 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. [2021-06-11 09:22:46,473 INFO L151 LiptonReduction]: Number of co-enabled transitions 12240 [2021-06-11 09:22:49,208 INFO L163 LiptonReduction]: Checked pairs total: 5040 [2021-06-11 09:22:49,209 INFO L165 LiptonReduction]: Total number of compositions: 45 [2021-06-11 09:22:49,209 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2763 [2021-06-11 09:22:49,209 INFO L129 PetriNetUnfolder]: 0/1 cut-off events. [2021-06-11 09:22:49,209 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:49,209 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:22:49,209 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-06-11 09:22:49,209 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:22:49,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:22:49,210 INFO L82 PathProgramCache]: Analyzing trace with hash 139299, now seen corresponding path program 1 times [2021-06-11 09:22:49,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:22:49,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965707380] [2021-06-11 09:22:49,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:22:49,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:22:49,216 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:22:49,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:22:49,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:22:49,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965707380] [2021-06-11 09:22:49,219 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:22:49,219 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 09:22:49,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354481665] [2021-06-11 09:22:49,219 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:22:49,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:22:49,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:22:49,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:22:49,219 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 185 [2021-06-11 09:22:49,220 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) [2021-06-11 09:22:49,220 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:22:49,220 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 185 [2021-06-11 09:22:49,220 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:22:49,234 INFO L129 PetriNetUnfolder]: 0/92 cut-off events. [2021-06-11 09:22:49,234 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:49,234 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. [2021-06-11 09:22:49,234 INFO L132 encePairwiseOnDemand]: 183/185 looper letters, 0 selfloop transitions, 1 changer transitions 0/92 dead transitions. [2021-06-11 09:22:49,234 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 92 transitions, 2391 flow [2021-06-11 09:22:49,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:22:49,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:22:49,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 548 transitions. [2021-06-11 09:22:49,235 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9873873873873874 [2021-06-11 09:22:49,235 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 548 transitions. [2021-06-11 09:22:49,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 548 transitions. [2021-06-11 09:22:49,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:22:49,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 548 transitions. [2021-06-11 09:22:49,236 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) [2021-06-11 09:22:49,236 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) [2021-06-11 09:22:49,236 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) [2021-06-11 09:22:49,236 INFO L185 Difference]: Start difference. First operand has 184 places, 93 transitions, 2391 flow. Second operand 3 states and 548 transitions. [2021-06-11 09:22:49,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 92 transitions, 2391 flow [2021-06-11 09:22:49,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 92 transitions, 411 flow, removed 990 selfloop flow, removed 0 redundant places. [2021-06-11 09:22:49,259 INFO L241 Difference]: Finished difference. Result has 185 places, 92 transitions, 411 flow [2021-06-11 09:22:49,259 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} [2021-06-11 09:22:49,259 INFO L343 CegarLoopForPetriNet]: 184 programPoint places, 1 predicate places. [2021-06-11 09:22:49,259 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:49,260 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 185 places, 92 transitions, 411 flow [2021-06-11 09:22:49,260 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 185 places, 92 transitions, 411 flow [2021-06-11 09:22:49,260 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 185 places, 92 transitions, 411 flow [2021-06-11 09:22:49,267 INFO L129 PetriNetUnfolder]: 0/92 cut-off events. [2021-06-11 09:22:49,267 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:49,268 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. [2021-06-11 09:22:49,269 INFO L151 LiptonReduction]: Number of co-enabled transitions 4050 [2021-06-11 09:22:49,271 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:22:49,272 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:22:49,272 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 13 [2021-06-11 09:22:49,272 INFO L480 AbstractCegarLoop]: Abstraction has has 185 places, 92 transitions, 411 flow [2021-06-11 09:22:49,272 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) [2021-06-11 09:22:49,272 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:22:49,272 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] [2021-06-11 09:22:49,272 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-06-11 09:22:49,272 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:22:49,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:22:49,272 INFO L82 PathProgramCache]: Analyzing trace with hash -1531564085, now seen corresponding path program 1 times [2021-06-11 09:22:49,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:22:49,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563845912] [2021-06-11 09:22:49,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:22:49,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:22:49,279 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:22:49,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:22:49,281 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:22:49,285 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:22:49,285 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:22:49,285 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-06-11 09:22:49,285 WARN L342 ceAbstractionStarter]: 45 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:22:49,286 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 46 thread instances. [2021-06-11 09:22:49,321 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:22:49,321 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 09:22:49,321 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:22:49,321 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:22:49,321 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:22:49,321 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:22:49,321 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:22:49,322 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:22:49,322 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:22:49,322 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:22:49,323 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 236 places, 143 transitions, 2586 flow [2021-06-11 09:22:49,349 INFO L129 PetriNetUnfolder]: 0/281 cut-off events. [2021-06-11 09:22:49,349 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:49,349 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. [2021-06-11 09:22:49,349 INFO L82 GeneralOperation]: Start removeDead. Operand has 236 places, 143 transitions, 2586 flow [2021-06-11 09:22:49,350 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 234 places, 141 transitions, 2582 flow [2021-06-11 09:22:49,350 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:49,350 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 234 places, 141 transitions, 2582 flow [2021-06-11 09:22:49,350 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 234 places, 141 transitions, 2582 flow [2021-06-11 09:22:49,351 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 234 places, 141 transitions, 2582 flow [2021-06-11 09:22:49,371 INFO L129 PetriNetUnfolder]: 0/187 cut-off events. [2021-06-11 09:22:49,371 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:49,371 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. [2021-06-11 09:22:49,378 INFO L151 LiptonReduction]: Number of co-enabled transitions 12788 [2021-06-11 09:22:52,232 INFO L163 LiptonReduction]: Checked pairs total: 5267 [2021-06-11 09:22:52,232 INFO L165 LiptonReduction]: Total number of compositions: 46 [2021-06-11 09:22:52,232 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2882 [2021-06-11 09:22:52,233 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-06-11 09:22:52,233 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:52,233 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:22:52,233 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-06-11 09:22:52,233 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:22:52,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:22:52,233 INFO L82 PathProgramCache]: Analyzing trace with hash 145315, now seen corresponding path program 1 times [2021-06-11 09:22:52,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:22:52,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549835592] [2021-06-11 09:22:52,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:22:52,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:22:52,244 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:22:52,244 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:22:52,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:22:52,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549835592] [2021-06-11 09:22:52,246 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:22:52,246 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 09:22:52,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081717781] [2021-06-11 09:22:52,246 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:22:52,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:22:52,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:22:52,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:22:52,247 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 189 [2021-06-11 09:22:52,247 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) [2021-06-11 09:22:52,247 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:22:52,247 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 189 [2021-06-11 09:22:52,247 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:22:52,262 INFO L129 PetriNetUnfolder]: 0/94 cut-off events. [2021-06-11 09:22:52,262 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:52,262 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. [2021-06-11 09:22:52,263 INFO L132 encePairwiseOnDemand]: 187/189 looper letters, 0 selfloop transitions, 1 changer transitions 0/94 dead transitions. [2021-06-11 09:22:52,263 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 94 transitions, 2490 flow [2021-06-11 09:22:52,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:22:52,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:22:52,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 560 transitions. [2021-06-11 09:22:52,263 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9876543209876543 [2021-06-11 09:22:52,263 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 560 transitions. [2021-06-11 09:22:52,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 560 transitions. [2021-06-11 09:22:52,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:22:52,263 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 560 transitions. [2021-06-11 09:22:52,264 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) [2021-06-11 09:22:52,264 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) [2021-06-11 09:22:52,265 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) [2021-06-11 09:22:52,265 INFO L185 Difference]: Start difference. First operand has 188 places, 95 transitions, 2490 flow. Second operand 3 states and 560 transitions. [2021-06-11 09:22:52,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 94 transitions, 2490 flow [2021-06-11 09:22:52,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 94 transitions, 420 flow, removed 1035 selfloop flow, removed 0 redundant places. [2021-06-11 09:22:52,290 INFO L241 Difference]: Finished difference. Result has 189 places, 94 transitions, 420 flow [2021-06-11 09:22:52,290 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} [2021-06-11 09:22:52,290 INFO L343 CegarLoopForPetriNet]: 188 programPoint places, 1 predicate places. [2021-06-11 09:22:52,290 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:52,290 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 189 places, 94 transitions, 420 flow [2021-06-11 09:22:52,290 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 189 places, 94 transitions, 420 flow [2021-06-11 09:22:52,290 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 189 places, 94 transitions, 420 flow [2021-06-11 09:22:52,298 INFO L129 PetriNetUnfolder]: 0/94 cut-off events. [2021-06-11 09:22:52,298 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:52,298 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. [2021-06-11 09:22:52,299 INFO L151 LiptonReduction]: Number of co-enabled transitions 4232 [2021-06-11 09:22:52,302 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:22:52,302 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:22:52,302 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 12 [2021-06-11 09:22:52,303 INFO L480 AbstractCegarLoop]: Abstraction has has 189 places, 94 transitions, 420 flow [2021-06-11 09:22:52,303 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) [2021-06-11 09:22:52,303 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:22:52,303 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] [2021-06-11 09:22:52,303 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-06-11 09:22:52,303 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:22:52,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:22:52,303 INFO L82 PathProgramCache]: Analyzing trace with hash -790489427, now seen corresponding path program 1 times [2021-06-11 09:22:52,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:22:52,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611047471] [2021-06-11 09:22:52,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:22:52,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:22:52,309 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:22:52,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:22:52,311 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:22:52,315 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:22:52,316 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:22:52,316 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-06-11 09:22:52,316 WARN L342 ceAbstractionStarter]: 46 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:22:52,316 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 47 thread instances. [2021-06-11 09:22:52,353 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:22:52,353 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 09:22:52,354 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:22:52,354 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:22:52,354 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:22:52,354 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:22:52,354 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:22:52,354 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:22:52,354 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:22:52,354 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:22:52,355 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 241 places, 146 transitions, 2689 flow [2021-06-11 09:22:52,382 INFO L129 PetriNetUnfolder]: 0/287 cut-off events. [2021-06-11 09:22:52,383 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:52,383 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. [2021-06-11 09:22:52,383 INFO L82 GeneralOperation]: Start removeDead. Operand has 241 places, 146 transitions, 2689 flow [2021-06-11 09:22:52,384 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 239 places, 144 transitions, 2685 flow [2021-06-11 09:22:52,384 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:52,384 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 239 places, 144 transitions, 2685 flow [2021-06-11 09:22:52,384 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 239 places, 144 transitions, 2685 flow [2021-06-11 09:22:52,385 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 239 places, 144 transitions, 2685 flow [2021-06-11 09:22:52,407 INFO L129 PetriNetUnfolder]: 0/191 cut-off events. [2021-06-11 09:22:52,407 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:52,407 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. [2021-06-11 09:22:52,414 INFO L151 LiptonReduction]: Number of co-enabled transitions 13348 [2021-06-11 09:22:55,521 INFO L163 LiptonReduction]: Checked pairs total: 5499 [2021-06-11 09:22:55,521 INFO L165 LiptonReduction]: Total number of compositions: 47 [2021-06-11 09:22:55,521 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 3137 [2021-06-11 09:22:55,522 INFO L129 PetriNetUnfolder]: 0/1 cut-off events. [2021-06-11 09:22:55,522 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:55,522 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:22:55,522 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-06-11 09:22:55,522 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:22:55,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:22:55,522 INFO L82 PathProgramCache]: Analyzing trace with hash 151459, now seen corresponding path program 1 times [2021-06-11 09:22:55,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:22:55,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029352614] [2021-06-11 09:22:55,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:22:55,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:22:55,529 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:22:55,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:22:55,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:22:55,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029352614] [2021-06-11 09:22:55,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:22:55,532 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 09:22:55,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290636288] [2021-06-11 09:22:55,532 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:22:55,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:22:55,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:22:55,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:22:55,533 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 193 [2021-06-11 09:22:55,533 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) [2021-06-11 09:22:55,533 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:22:55,533 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 193 [2021-06-11 09:22:55,533 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:22:55,549 INFO L129 PetriNetUnfolder]: 0/96 cut-off events. [2021-06-11 09:22:55,549 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:55,549 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. [2021-06-11 09:22:55,550 INFO L132 encePairwiseOnDemand]: 191/193 looper letters, 0 selfloop transitions, 1 changer transitions 0/96 dead transitions. [2021-06-11 09:22:55,550 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 96 transitions, 2591 flow [2021-06-11 09:22:55,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:22:55,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:22:55,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 572 transitions. [2021-06-11 09:22:55,550 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9879101899827288 [2021-06-11 09:22:55,550 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 572 transitions. [2021-06-11 09:22:55,550 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 572 transitions. [2021-06-11 09:22:55,550 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:22:55,550 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 572 transitions. [2021-06-11 09:22:55,551 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) [2021-06-11 09:22:55,551 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) [2021-06-11 09:22:55,552 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) [2021-06-11 09:22:55,552 INFO L185 Difference]: Start difference. First operand has 192 places, 97 transitions, 2591 flow. Second operand 3 states and 572 transitions. [2021-06-11 09:22:55,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 96 transitions, 2591 flow [2021-06-11 09:22:55,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 96 transitions, 429 flow, removed 1081 selfloop flow, removed 0 redundant places. [2021-06-11 09:22:55,577 INFO L241 Difference]: Finished difference. Result has 193 places, 96 transitions, 429 flow [2021-06-11 09:22:55,577 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} [2021-06-11 09:22:55,577 INFO L343 CegarLoopForPetriNet]: 192 programPoint places, 1 predicate places. [2021-06-11 09:22:55,577 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:55,577 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 193 places, 96 transitions, 429 flow [2021-06-11 09:22:55,577 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 193 places, 96 transitions, 429 flow [2021-06-11 09:22:55,578 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 193 places, 96 transitions, 429 flow [2021-06-11 09:22:55,586 INFO L129 PetriNetUnfolder]: 0/96 cut-off events. [2021-06-11 09:22:55,586 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:55,586 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. [2021-06-11 09:22:55,587 INFO L151 LiptonReduction]: Number of co-enabled transitions 4418 [2021-06-11 09:22:55,590 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:22:55,590 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:22:55,591 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 14 [2021-06-11 09:22:55,591 INFO L480 AbstractCegarLoop]: Abstraction has has 193 places, 96 transitions, 429 flow [2021-06-11 09:22:55,591 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) [2021-06-11 09:22:55,591 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:22:55,591 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] [2021-06-11 09:22:55,591 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-06-11 09:22:55,591 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:22:55,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:22:55,591 INFO L82 PathProgramCache]: Analyzing trace with hash -1706992282, now seen corresponding path program 1 times [2021-06-11 09:22:55,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:22:55,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55566797] [2021-06-11 09:22:55,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:22:55,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:22:55,599 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:22:55,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:22:55,601 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:22:55,605 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:22:55,606 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:22:55,606 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-06-11 09:22:55,606 WARN L342 ceAbstractionStarter]: 47 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:22:55,606 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 48 thread instances. [2021-06-11 09:22:55,643 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:22:55,643 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 09:22:55,643 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:22:55,643 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:22:55,643 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:22:55,643 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:22:55,643 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:22:55,643 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:22:55,643 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:22:55,643 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:22:55,645 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 246 places, 149 transitions, 2794 flow [2021-06-11 09:22:55,673 INFO L129 PetriNetUnfolder]: 0/293 cut-off events. [2021-06-11 09:22:55,673 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:55,674 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. [2021-06-11 09:22:55,674 INFO L82 GeneralOperation]: Start removeDead. Operand has 246 places, 149 transitions, 2794 flow [2021-06-11 09:22:55,675 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 244 places, 147 transitions, 2790 flow [2021-06-11 09:22:55,675 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:55,675 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 244 places, 147 transitions, 2790 flow [2021-06-11 09:22:55,675 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 244 places, 147 transitions, 2790 flow [2021-06-11 09:22:55,676 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 244 places, 147 transitions, 2790 flow [2021-06-11 09:22:55,698 INFO L129 PetriNetUnfolder]: 0/195 cut-off events. [2021-06-11 09:22:55,699 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:55,699 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. [2021-06-11 09:22:55,706 INFO L151 LiptonReduction]: Number of co-enabled transitions 13920 [2021-06-11 09:22:58,863 INFO L163 LiptonReduction]: Checked pairs total: 5736 [2021-06-11 09:22:58,863 INFO L165 LiptonReduction]: Total number of compositions: 48 [2021-06-11 09:22:58,863 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 3188 [2021-06-11 09:22:58,864 INFO L129 PetriNetUnfolder]: 0/1 cut-off events. [2021-06-11 09:22:58,864 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:58,864 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:22:58,864 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-06-11 09:22:58,864 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:22:58,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:22:58,864 INFO L82 PathProgramCache]: Analyzing trace with hash 157731, now seen corresponding path program 1 times [2021-06-11 09:22:58,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:22:58,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675131763] [2021-06-11 09:22:58,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:22:58,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:22:58,873 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:22:58,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:22:58,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:22:58,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675131763] [2021-06-11 09:22:58,876 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:22:58,876 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 09:22:58,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319694635] [2021-06-11 09:22:58,876 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:22:58,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:22:58,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:22:58,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:22:58,877 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 197 [2021-06-11 09:22:58,877 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) [2021-06-11 09:22:58,877 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:22:58,877 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 197 [2021-06-11 09:22:58,877 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:22:58,894 INFO L129 PetriNetUnfolder]: 0/98 cut-off events. [2021-06-11 09:22:58,894 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:58,894 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. [2021-06-11 09:22:58,895 INFO L132 encePairwiseOnDemand]: 195/197 looper letters, 0 selfloop transitions, 1 changer transitions 0/98 dead transitions. [2021-06-11 09:22:58,895 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 98 transitions, 2694 flow [2021-06-11 09:22:58,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:22:58,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:22:58,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 584 transitions. [2021-06-11 09:22:58,895 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.988155668358714 [2021-06-11 09:22:58,895 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 584 transitions. [2021-06-11 09:22:58,895 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 584 transitions. [2021-06-11 09:22:58,895 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:22:58,895 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 584 transitions. [2021-06-11 09:22:58,896 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) [2021-06-11 09:22:58,897 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) [2021-06-11 09:22:58,897 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) [2021-06-11 09:22:58,897 INFO L185 Difference]: Start difference. First operand has 196 places, 99 transitions, 2694 flow. Second operand 3 states and 584 transitions. [2021-06-11 09:22:58,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 98 transitions, 2694 flow [2021-06-11 09:22:58,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 98 transitions, 438 flow, removed 1128 selfloop flow, removed 0 redundant places. [2021-06-11 09:22:58,923 INFO L241 Difference]: Finished difference. Result has 197 places, 98 transitions, 438 flow [2021-06-11 09:22:58,924 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} [2021-06-11 09:22:58,924 INFO L343 CegarLoopForPetriNet]: 196 programPoint places, 1 predicate places. [2021-06-11 09:22:58,924 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:58,924 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 197 places, 98 transitions, 438 flow [2021-06-11 09:22:58,924 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 197 places, 98 transitions, 438 flow [2021-06-11 09:22:58,924 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 197 places, 98 transitions, 438 flow [2021-06-11 09:22:58,933 INFO L129 PetriNetUnfolder]: 0/98 cut-off events. [2021-06-11 09:22:58,933 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:58,933 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. [2021-06-11 09:22:58,934 INFO L151 LiptonReduction]: Number of co-enabled transitions 4608 [2021-06-11 09:22:58,938 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:22:58,938 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:22:58,938 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 14 [2021-06-11 09:22:58,938 INFO L480 AbstractCegarLoop]: Abstraction has has 197 places, 98 transitions, 438 flow [2021-06-11 09:22:58,938 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) [2021-06-11 09:22:58,938 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:22:58,938 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] [2021-06-11 09:22:58,939 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-06-11 09:22:58,939 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:22:58,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:22:58,939 INFO L82 PathProgramCache]: Analyzing trace with hash 1429030512, now seen corresponding path program 1 times [2021-06-11 09:22:58,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:22:58,939 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054212977] [2021-06-11 09:22:58,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:22:58,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:22:58,947 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:22:58,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:22:58,948 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:22:58,953 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:22:58,954 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:22:58,954 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2021-06-11 09:22:58,954 WARN L342 ceAbstractionStarter]: 48 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:22:58,954 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 49 thread instances. [2021-06-11 09:22:59,000 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:22:59,000 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 09:22:59,000 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:22:59,000 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:22:59,000 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:22:59,000 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:22:59,000 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:22:59,000 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:22:59,001 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:22:59,001 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:22:59,002 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 251 places, 152 transitions, 2901 flow [2021-06-11 09:22:59,031 INFO L129 PetriNetUnfolder]: 0/299 cut-off events. [2021-06-11 09:22:59,031 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:59,031 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. [2021-06-11 09:22:59,032 INFO L82 GeneralOperation]: Start removeDead. Operand has 251 places, 152 transitions, 2901 flow [2021-06-11 09:22:59,033 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 249 places, 150 transitions, 2897 flow [2021-06-11 09:22:59,033 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:22:59,033 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 249 places, 150 transitions, 2897 flow [2021-06-11 09:22:59,033 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 249 places, 150 transitions, 2897 flow [2021-06-11 09:22:59,034 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 249 places, 150 transitions, 2897 flow [2021-06-11 09:22:59,057 INFO L129 PetriNetUnfolder]: 0/199 cut-off events. [2021-06-11 09:22:59,057 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:22:59,058 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. [2021-06-11 09:22:59,065 INFO L151 LiptonReduction]: Number of co-enabled transitions 14504 [2021-06-11 09:23:02,309 INFO L163 LiptonReduction]: Checked pairs total: 5978 [2021-06-11 09:23:02,310 INFO L165 LiptonReduction]: Total number of compositions: 49 [2021-06-11 09:23:02,310 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 3277 [2021-06-11 09:23:02,311 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-06-11 09:23:02,311 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:23:02,311 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:23:02,311 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-06-11 09:23:02,311 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:23:02,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:23:02,311 INFO L82 PathProgramCache]: Analyzing trace with hash 164131, now seen corresponding path program 1 times [2021-06-11 09:23:02,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:23:02,311 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064604230] [2021-06-11 09:23:02,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:23:02,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:23:02,319 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:23:02,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:23:02,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:23:02,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064604230] [2021-06-11 09:23:02,321 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:23:02,322 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 09:23:02,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017624394] [2021-06-11 09:23:02,322 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:23:02,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:23:02,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:23:02,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:23:02,322 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 201 [2021-06-11 09:23:02,323 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) [2021-06-11 09:23:02,323 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:23:02,323 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 201 [2021-06-11 09:23:02,323 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:23:02,340 INFO L129 PetriNetUnfolder]: 0/100 cut-off events. [2021-06-11 09:23:02,340 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:23:02,340 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. [2021-06-11 09:23:02,341 INFO L132 encePairwiseOnDemand]: 199/201 looper letters, 0 selfloop transitions, 1 changer transitions 0/100 dead transitions. [2021-06-11 09:23:02,341 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 100 transitions, 2799 flow [2021-06-11 09:23:02,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:23:02,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:23:02,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 596 transitions. [2021-06-11 09:23:02,341 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.988391376451078 [2021-06-11 09:23:02,341 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 596 transitions. [2021-06-11 09:23:02,341 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 596 transitions. [2021-06-11 09:23:02,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:23:02,342 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 596 transitions. [2021-06-11 09:23:02,342 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) [2021-06-11 09:23:02,343 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) [2021-06-11 09:23:02,343 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) [2021-06-11 09:23:02,343 INFO L185 Difference]: Start difference. First operand has 200 places, 101 transitions, 2799 flow. Second operand 3 states and 596 transitions. [2021-06-11 09:23:02,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 100 transitions, 2799 flow [2021-06-11 09:23:02,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 100 transitions, 447 flow, removed 1176 selfloop flow, removed 0 redundant places. [2021-06-11 09:23:02,369 INFO L241 Difference]: Finished difference. Result has 201 places, 100 transitions, 447 flow [2021-06-11 09:23:02,369 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} [2021-06-11 09:23:02,369 INFO L343 CegarLoopForPetriNet]: 200 programPoint places, 1 predicate places. [2021-06-11 09:23:02,369 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:23:02,369 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 201 places, 100 transitions, 447 flow [2021-06-11 09:23:02,369 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 201 places, 100 transitions, 447 flow [2021-06-11 09:23:02,370 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 201 places, 100 transitions, 447 flow [2021-06-11 09:23:02,378 INFO L129 PetriNetUnfolder]: 0/100 cut-off events. [2021-06-11 09:23:02,378 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:23:02,379 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. [2021-06-11 09:23:02,380 INFO L151 LiptonReduction]: Number of co-enabled transitions 4802 [2021-06-11 09:23:02,383 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:23:02,383 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:23:02,384 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 15 [2021-06-11 09:23:02,384 INFO L480 AbstractCegarLoop]: Abstraction has has 201 places, 100 transitions, 447 flow [2021-06-11 09:23:02,384 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) [2021-06-11 09:23:02,384 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:23:02,384 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] [2021-06-11 09:23:02,384 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2021-06-11 09:23:02,384 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:23:02,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:23:02,385 INFO L82 PathProgramCache]: Analyzing trace with hash -1177315567, now seen corresponding path program 1 times [2021-06-11 09:23:02,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:23:02,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000445426] [2021-06-11 09:23:02,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:23:02,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:23:02,393 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:23:02,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:23:02,395 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:23:02,400 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:23:02,400 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:23:02,400 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2021-06-11 09:23:02,400 WARN L342 ceAbstractionStarter]: 49 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:23:02,401 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 50 thread instances. [2021-06-11 09:23:02,437 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:23:02,438 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 09:23:02,438 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:23:02,438 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:23:02,438 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:23:02,438 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:23:02,438 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:23:02,438 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:23:02,438 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:23:02,438 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:23:02,439 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 256 places, 155 transitions, 3010 flow [2021-06-11 09:23:02,471 INFO L129 PetriNetUnfolder]: 0/305 cut-off events. [2021-06-11 09:23:02,471 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:23:02,471 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. [2021-06-11 09:23:02,471 INFO L82 GeneralOperation]: Start removeDead. Operand has 256 places, 155 transitions, 3010 flow [2021-06-11 09:23:02,473 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 254 places, 153 transitions, 3006 flow [2021-06-11 09:23:02,473 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:23:02,473 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 254 places, 153 transitions, 3006 flow [2021-06-11 09:23:02,473 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 254 places, 153 transitions, 3006 flow [2021-06-11 09:23:02,474 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 254 places, 153 transitions, 3006 flow [2021-06-11 09:23:02,499 INFO L129 PetriNetUnfolder]: 0/203 cut-off events. [2021-06-11 09:23:02,499 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:23:02,499 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. [2021-06-11 09:23:02,508 INFO L151 LiptonReduction]: Number of co-enabled transitions 15100 [2021-06-11 09:23:05,918 INFO L163 LiptonReduction]: Checked pairs total: 6225 [2021-06-11 09:23:05,918 INFO L165 LiptonReduction]: Total number of compositions: 50 [2021-06-11 09:23:05,918 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 3445 [2021-06-11 09:23:05,919 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-06-11 09:23:05,919 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:23:05,919 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:23:05,919 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-06-11 09:23:05,919 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:23:05,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:23:05,919 INFO L82 PathProgramCache]: Analyzing trace with hash 170659, now seen corresponding path program 1 times [2021-06-11 09:23:05,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:23:05,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163279548] [2021-06-11 09:23:05,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:23:05,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:23:05,927 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:23:05,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:23:05,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:23:05,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163279548] [2021-06-11 09:23:05,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:23:05,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 09:23:05,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805299324] [2021-06-11 09:23:05,930 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:23:05,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:23:05,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:23:05,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:23:05,930 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 205 [2021-06-11 09:23:05,931 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) [2021-06-11 09:23:05,931 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:23:05,931 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 205 [2021-06-11 09:23:05,931 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:23:05,948 INFO L129 PetriNetUnfolder]: 0/102 cut-off events. [2021-06-11 09:23:05,949 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:23:05,949 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. [2021-06-11 09:23:05,949 INFO L132 encePairwiseOnDemand]: 203/205 looper letters, 0 selfloop transitions, 1 changer transitions 0/102 dead transitions. [2021-06-11 09:23:05,949 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 102 transitions, 2906 flow [2021-06-11 09:23:05,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:23:05,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:23:05,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 608 transitions. [2021-06-11 09:23:05,950 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9886178861788618 [2021-06-11 09:23:05,950 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 608 transitions. [2021-06-11 09:23:05,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 608 transitions. [2021-06-11 09:23:05,950 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:23:05,950 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 608 transitions. [2021-06-11 09:23:05,950 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) [2021-06-11 09:23:05,951 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) [2021-06-11 09:23:05,951 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) [2021-06-11 09:23:05,951 INFO L185 Difference]: Start difference. First operand has 204 places, 103 transitions, 2906 flow. Second operand 3 states and 608 transitions. [2021-06-11 09:23:05,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 102 transitions, 2906 flow [2021-06-11 09:23:05,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 102 transitions, 456 flow, removed 1225 selfloop flow, removed 0 redundant places. [2021-06-11 09:23:05,979 INFO L241 Difference]: Finished difference. Result has 205 places, 102 transitions, 456 flow [2021-06-11 09:23:05,979 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} [2021-06-11 09:23:05,979 INFO L343 CegarLoopForPetriNet]: 204 programPoint places, 1 predicate places. [2021-06-11 09:23:05,979 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:23:05,979 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 205 places, 102 transitions, 456 flow [2021-06-11 09:23:05,979 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 205 places, 102 transitions, 456 flow [2021-06-11 09:23:05,979 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 205 places, 102 transitions, 456 flow [2021-06-11 09:23:05,988 INFO L129 PetriNetUnfolder]: 0/102 cut-off events. [2021-06-11 09:23:05,988 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:23:05,988 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. [2021-06-11 09:23:05,990 INFO L151 LiptonReduction]: Number of co-enabled transitions 5000 [2021-06-11 09:23:05,993 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:23:05,994 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:23:05,994 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 15 [2021-06-11 09:23:05,994 INFO L480 AbstractCegarLoop]: Abstraction has has 205 places, 102 transitions, 456 flow [2021-06-11 09:23:05,994 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) [2021-06-11 09:23:05,994 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:23:05,994 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] [2021-06-11 09:23:05,994 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2021-06-11 09:23:05,994 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:23:05,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:23:05,994 INFO L82 PathProgramCache]: Analyzing trace with hash 568827443, now seen corresponding path program 1 times [2021-06-11 09:23:05,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:23:05,995 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211034008] [2021-06-11 09:23:05,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:23:06,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:23:06,002 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:23:06,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:23:06,003 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:23:06,009 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:23:06,009 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:23:06,009 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2021-06-11 09:23:06,009 WARN L342 ceAbstractionStarter]: 50 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:23:06,009 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 51 thread instances. [2021-06-11 09:23:06,046 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:23:06,046 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 09:23:06,047 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:23:06,047 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:23:06,047 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:23:06,047 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:23:06,047 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:23:06,047 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:23:06,047 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:23:06,047 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:23:06,048 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 261 places, 158 transitions, 3121 flow [2021-06-11 09:23:06,081 INFO L129 PetriNetUnfolder]: 0/311 cut-off events. [2021-06-11 09:23:06,081 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:23:06,081 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. [2021-06-11 09:23:06,081 INFO L82 GeneralOperation]: Start removeDead. Operand has 261 places, 158 transitions, 3121 flow [2021-06-11 09:23:06,082 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 259 places, 156 transitions, 3117 flow [2021-06-11 09:23:06,083 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:23:06,083 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 259 places, 156 transitions, 3117 flow [2021-06-11 09:23:06,083 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 259 places, 156 transitions, 3117 flow [2021-06-11 09:23:06,084 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 259 places, 156 transitions, 3117 flow [2021-06-11 09:23:06,109 INFO L129 PetriNetUnfolder]: 0/207 cut-off events. [2021-06-11 09:23:06,109 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:23:06,110 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. [2021-06-11 09:23:06,118 INFO L151 LiptonReduction]: Number of co-enabled transitions 15708 [2021-06-11 09:23:09,862 INFO L163 LiptonReduction]: Checked pairs total: 6477 [2021-06-11 09:23:09,862 INFO L165 LiptonReduction]: Total number of compositions: 51 [2021-06-11 09:23:09,862 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 3779 [2021-06-11 09:23:09,863 INFO L129 PetriNetUnfolder]: 0/1 cut-off events. [2021-06-11 09:23:09,863 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:23:09,863 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:23:09,863 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-06-11 09:23:09,863 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:23:09,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:23:09,863 INFO L82 PathProgramCache]: Analyzing trace with hash 177315, now seen corresponding path program 1 times [2021-06-11 09:23:09,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:23:09,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287120500] [2021-06-11 09:23:09,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:23:09,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:23:09,872 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:23:09,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:23:09,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:23:09,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287120500] [2021-06-11 09:23:09,874 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:23:09,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 09:23:09,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036115195] [2021-06-11 09:23:09,874 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:23:09,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:23:09,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:23:09,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:23:09,875 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 209 [2021-06-11 09:23:09,875 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) [2021-06-11 09:23:09,875 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:23:09,875 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 209 [2021-06-11 09:23:09,875 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:23:09,894 INFO L129 PetriNetUnfolder]: 0/104 cut-off events. [2021-06-11 09:23:09,894 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:23:09,894 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. [2021-06-11 09:23:09,894 INFO L132 encePairwiseOnDemand]: 207/209 looper letters, 0 selfloop transitions, 1 changer transitions 0/104 dead transitions. [2021-06-11 09:23:09,894 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 104 transitions, 3015 flow [2021-06-11 09:23:09,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:23:09,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:23:09,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 620 transitions. [2021-06-11 09:23:09,895 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.988835725677831 [2021-06-11 09:23:09,895 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 620 transitions. [2021-06-11 09:23:09,895 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 620 transitions. [2021-06-11 09:23:09,895 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:23:09,895 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 620 transitions. [2021-06-11 09:23:09,896 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) [2021-06-11 09:23:09,896 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) [2021-06-11 09:23:09,896 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) [2021-06-11 09:23:09,896 INFO L185 Difference]: Start difference. First operand has 208 places, 105 transitions, 3015 flow. Second operand 3 states and 620 transitions. [2021-06-11 09:23:09,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 104 transitions, 3015 flow [2021-06-11 09:23:09,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 104 transitions, 465 flow, removed 1275 selfloop flow, removed 0 redundant places. [2021-06-11 09:23:09,927 INFO L241 Difference]: Finished difference. Result has 209 places, 104 transitions, 465 flow [2021-06-11 09:23:09,927 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} [2021-06-11 09:23:09,927 INFO L343 CegarLoopForPetriNet]: 208 programPoint places, 1 predicate places. [2021-06-11 09:23:09,927 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:23:09,927 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 209 places, 104 transitions, 465 flow [2021-06-11 09:23:09,927 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 209 places, 104 transitions, 465 flow [2021-06-11 09:23:09,927 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 209 places, 104 transitions, 465 flow [2021-06-11 09:23:09,936 INFO L129 PetriNetUnfolder]: 0/104 cut-off events. [2021-06-11 09:23:09,937 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:23:09,937 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. [2021-06-11 09:23:09,938 INFO L151 LiptonReduction]: Number of co-enabled transitions 5202 [2021-06-11 09:23:09,942 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:23:09,942 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:23:09,942 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 15 [2021-06-11 09:23:09,942 INFO L480 AbstractCegarLoop]: Abstraction has has 209 places, 104 transitions, 465 flow [2021-06-11 09:23:09,942 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) [2021-06-11 09:23:09,942 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:23:09,942 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] [2021-06-11 09:23:09,942 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2021-06-11 09:23:09,942 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:23:09,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:23:09,943 INFO L82 PathProgramCache]: Analyzing trace with hash -1219012916, now seen corresponding path program 1 times [2021-06-11 09:23:09,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:23:09,943 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504861535] [2021-06-11 09:23:09,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:23:09,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:23:09,951 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:23:09,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:23:09,952 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:23:09,958 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:23:09,958 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:23:09,958 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2021-06-11 09:23:09,958 WARN L342 ceAbstractionStarter]: 51 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:23:09,958 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 52 thread instances. [2021-06-11 09:23:09,996 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:23:09,996 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 09:23:09,996 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:23:09,997 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:23:09,997 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:23:09,997 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:23:09,997 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:23:09,997 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:23:09,997 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:23:09,997 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:23:09,998 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 266 places, 161 transitions, 3234 flow [2021-06-11 09:23:10,032 INFO L129 PetriNetUnfolder]: 0/317 cut-off events. [2021-06-11 09:23:10,032 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:23:10,032 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. [2021-06-11 09:23:10,033 INFO L82 GeneralOperation]: Start removeDead. Operand has 266 places, 161 transitions, 3234 flow [2021-06-11 09:23:10,034 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 264 places, 159 transitions, 3230 flow [2021-06-11 09:23:10,034 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:23:10,034 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 264 places, 159 transitions, 3230 flow [2021-06-11 09:23:10,034 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 264 places, 159 transitions, 3230 flow [2021-06-11 09:23:10,035 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 264 places, 159 transitions, 3230 flow [2021-06-11 09:23:10,062 INFO L129 PetriNetUnfolder]: 0/211 cut-off events. [2021-06-11 09:23:10,062 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:23:10,062 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. [2021-06-11 09:23:10,071 INFO L151 LiptonReduction]: Number of co-enabled transitions 16328 [2021-06-11 09:23:13,804 INFO L163 LiptonReduction]: Checked pairs total: 6734 [2021-06-11 09:23:13,804 INFO L165 LiptonReduction]: Total number of compositions: 52 [2021-06-11 09:23:13,805 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 3771 [2021-06-11 09:23:13,805 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-06-11 09:23:13,805 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:23:13,805 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:23:13,805 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-06-11 09:23:13,805 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:23:13,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:23:13,806 INFO L82 PathProgramCache]: Analyzing trace with hash 184099, now seen corresponding path program 1 times [2021-06-11 09:23:13,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:23:13,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193312835] [2021-06-11 09:23:13,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:23:13,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:23:13,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:23:13,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:23:13,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:23:13,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193312835] [2021-06-11 09:23:13,819 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:23:13,819 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 09:23:13,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871471918] [2021-06-11 09:23:13,819 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:23:13,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:23:13,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:23:13,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:23:13,819 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 213 [2021-06-11 09:23:13,820 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) [2021-06-11 09:23:13,820 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:23:13,820 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 213 [2021-06-11 09:23:13,820 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:23:13,839 INFO L129 PetriNetUnfolder]: 0/106 cut-off events. [2021-06-11 09:23:13,840 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:23:13,840 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. [2021-06-11 09:23:13,840 INFO L132 encePairwiseOnDemand]: 211/213 looper letters, 0 selfloop transitions, 1 changer transitions 0/106 dead transitions. [2021-06-11 09:23:13,840 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 106 transitions, 3126 flow [2021-06-11 09:23:13,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:23:13,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:23:13,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 632 transitions. [2021-06-11 09:23:13,841 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9890453834115805 [2021-06-11 09:23:13,841 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 632 transitions. [2021-06-11 09:23:13,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 632 transitions. [2021-06-11 09:23:13,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:23:13,841 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 632 transitions. [2021-06-11 09:23:13,842 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) [2021-06-11 09:23:13,842 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) [2021-06-11 09:23:13,842 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) [2021-06-11 09:23:13,842 INFO L185 Difference]: Start difference. First operand has 212 places, 107 transitions, 3126 flow. Second operand 3 states and 632 transitions. [2021-06-11 09:23:13,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 106 transitions, 3126 flow [2021-06-11 09:23:13,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 106 transitions, 474 flow, removed 1326 selfloop flow, removed 0 redundant places. [2021-06-11 09:23:13,876 INFO L241 Difference]: Finished difference. Result has 213 places, 106 transitions, 474 flow [2021-06-11 09:23:13,876 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} [2021-06-11 09:23:13,876 INFO L343 CegarLoopForPetriNet]: 212 programPoint places, 1 predicate places. [2021-06-11 09:23:13,876 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:23:13,876 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 213 places, 106 transitions, 474 flow [2021-06-11 09:23:13,876 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 213 places, 106 transitions, 474 flow [2021-06-11 09:23:13,877 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 213 places, 106 transitions, 474 flow [2021-06-11 09:23:13,886 INFO L129 PetriNetUnfolder]: 0/106 cut-off events. [2021-06-11 09:23:13,886 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:23:13,886 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. [2021-06-11 09:23:13,888 INFO L151 LiptonReduction]: Number of co-enabled transitions 5408 [2021-06-11 09:23:13,892 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:23:13,892 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:23:13,892 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 16 [2021-06-11 09:23:13,892 INFO L480 AbstractCegarLoop]: Abstraction has has 213 places, 106 transitions, 474 flow [2021-06-11 09:23:13,892 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) [2021-06-11 09:23:13,892 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:23:13,892 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] [2021-06-11 09:23:13,893 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2021-06-11 09:23:13,893 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:23:13,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:23:13,893 INFO L82 PathProgramCache]: Analyzing trace with hash -1650121738, now seen corresponding path program 1 times [2021-06-11 09:23:13,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:23:13,893 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229492711] [2021-06-11 09:23:13,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:23:13,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:23:13,901 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:23:13,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:23:13,902 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:23:13,908 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:23:13,908 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:23:13,908 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2021-06-11 09:23:13,908 WARN L342 ceAbstractionStarter]: 52 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:23:13,908 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 53 thread instances. [2021-06-11 09:23:13,956 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:23:13,956 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 09:23:13,957 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:23:13,957 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:23:13,957 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:23:13,957 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:23:13,957 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:23:13,957 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:23:13,957 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:23:13,957 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:23:13,960 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 271 places, 164 transitions, 3349 flow [2021-06-11 09:23:13,996 INFO L129 PetriNetUnfolder]: 0/323 cut-off events. [2021-06-11 09:23:13,996 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:23:13,996 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. [2021-06-11 09:23:13,996 INFO L82 GeneralOperation]: Start removeDead. Operand has 271 places, 164 transitions, 3349 flow [2021-06-11 09:23:13,997 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 269 places, 162 transitions, 3345 flow [2021-06-11 09:23:13,998 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:23:13,998 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 269 places, 162 transitions, 3345 flow [2021-06-11 09:23:13,998 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 269 places, 162 transitions, 3345 flow [2021-06-11 09:23:13,999 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 269 places, 162 transitions, 3345 flow [2021-06-11 09:23:14,027 INFO L129 PetriNetUnfolder]: 0/215 cut-off events. [2021-06-11 09:23:14,027 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:23:14,027 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. [2021-06-11 09:23:14,037 INFO L151 LiptonReduction]: Number of co-enabled transitions 16960 [2021-06-11 09:23:17,990 INFO L163 LiptonReduction]: Checked pairs total: 6996 [2021-06-11 09:23:17,990 INFO L165 LiptonReduction]: Total number of compositions: 53 [2021-06-11 09:23:17,990 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 3992 [2021-06-11 09:23:17,991 INFO L129 PetriNetUnfolder]: 0/1 cut-off events. [2021-06-11 09:23:17,991 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:23:17,991 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:23:17,991 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-06-11 09:23:17,991 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:23:17,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:23:17,991 INFO L82 PathProgramCache]: Analyzing trace with hash 191011, now seen corresponding path program 1 times [2021-06-11 09:23:17,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:23:17,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053243270] [2021-06-11 09:23:17,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:23:17,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:23:18,002 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:23:18,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:23:18,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:23:18,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053243270] [2021-06-11 09:23:18,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:23:18,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 09:23:18,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630372048] [2021-06-11 09:23:18,004 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:23:18,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:23:18,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:23:18,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:23:18,005 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 217 [2021-06-11 09:23:18,005 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) [2021-06-11 09:23:18,005 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:23:18,005 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 217 [2021-06-11 09:23:18,005 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:23:18,025 INFO L129 PetriNetUnfolder]: 0/108 cut-off events. [2021-06-11 09:23:18,025 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:23:18,025 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. [2021-06-11 09:23:18,026 INFO L132 encePairwiseOnDemand]: 215/217 looper letters, 0 selfloop transitions, 1 changer transitions 0/108 dead transitions. [2021-06-11 09:23:18,026 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 108 transitions, 3239 flow [2021-06-11 09:23:18,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:23:18,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:23:18,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 644 transitions. [2021-06-11 09:23:18,026 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.989247311827957 [2021-06-11 09:23:18,026 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 644 transitions. [2021-06-11 09:23:18,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 644 transitions. [2021-06-11 09:23:18,026 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:23:18,027 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 644 transitions. [2021-06-11 09:23:18,027 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) [2021-06-11 09:23:18,028 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) [2021-06-11 09:23:18,028 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) [2021-06-11 09:23:18,028 INFO L185 Difference]: Start difference. First operand has 216 places, 109 transitions, 3239 flow. Second operand 3 states and 644 transitions. [2021-06-11 09:23:18,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 108 transitions, 3239 flow [2021-06-11 09:23:18,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 108 transitions, 483 flow, removed 1378 selfloop flow, removed 0 redundant places. [2021-06-11 09:23:18,063 INFO L241 Difference]: Finished difference. Result has 217 places, 108 transitions, 483 flow [2021-06-11 09:23:18,064 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} [2021-06-11 09:23:18,064 INFO L343 CegarLoopForPetriNet]: 216 programPoint places, 1 predicate places. [2021-06-11 09:23:18,064 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:23:18,064 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 217 places, 108 transitions, 483 flow [2021-06-11 09:23:18,064 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 217 places, 108 transitions, 483 flow [2021-06-11 09:23:18,064 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 217 places, 108 transitions, 483 flow [2021-06-11 09:23:18,074 INFO L129 PetriNetUnfolder]: 0/108 cut-off events. [2021-06-11 09:23:18,074 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:23:18,074 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. [2021-06-11 09:23:18,076 INFO L151 LiptonReduction]: Number of co-enabled transitions 5618 [2021-06-11 09:23:18,079 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:23:18,080 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:23:18,080 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 16 [2021-06-11 09:23:18,080 INFO L480 AbstractCegarLoop]: Abstraction has has 217 places, 108 transitions, 483 flow [2021-06-11 09:23:18,080 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) [2021-06-11 09:23:18,080 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:23:18,080 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] [2021-06-11 09:23:18,080 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2021-06-11 09:23:18,080 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:23:18,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:23:18,080 INFO L82 PathProgramCache]: Analyzing trace with hash 292165271, now seen corresponding path program 1 times [2021-06-11 09:23:18,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:23:18,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538558257] [2021-06-11 09:23:18,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:23:18,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:23:18,089 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:23:18,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:23:18,091 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:23:18,097 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:23:18,097 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:23:18,097 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2021-06-11 09:23:18,097 WARN L342 ceAbstractionStarter]: 53 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:23:18,097 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 54 thread instances. [2021-06-11 09:23:18,137 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:23:18,137 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 09:23:18,138 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:23:18,138 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:23:18,138 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:23:18,138 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:23:18,138 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:23:18,138 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:23:18,138 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:23:18,138 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:23:18,139 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 276 places, 167 transitions, 3466 flow [2021-06-11 09:23:18,175 INFO L129 PetriNetUnfolder]: 0/329 cut-off events. [2021-06-11 09:23:18,176 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:23:18,176 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. [2021-06-11 09:23:18,176 INFO L82 GeneralOperation]: Start removeDead. Operand has 276 places, 167 transitions, 3466 flow [2021-06-11 09:23:18,177 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 274 places, 165 transitions, 3462 flow [2021-06-11 09:23:18,177 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:23:18,177 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 274 places, 165 transitions, 3462 flow [2021-06-11 09:23:18,177 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 274 places, 165 transitions, 3462 flow [2021-06-11 09:23:18,178 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 274 places, 165 transitions, 3462 flow [2021-06-11 09:23:18,215 INFO L129 PetriNetUnfolder]: 0/219 cut-off events. [2021-06-11 09:23:18,215 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:23:18,215 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. [2021-06-11 09:23:18,225 INFO L151 LiptonReduction]: Number of co-enabled transitions 17604 [2021-06-11 09:23:22,278 INFO L163 LiptonReduction]: Checked pairs total: 7263 [2021-06-11 09:23:22,278 INFO L165 LiptonReduction]: Total number of compositions: 54 [2021-06-11 09:23:22,279 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 4102 [2021-06-11 09:23:22,279 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-06-11 09:23:22,279 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:23:22,279 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:23:22,279 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-06-11 09:23:22,279 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:23:22,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:23:22,280 INFO L82 PathProgramCache]: Analyzing trace with hash 198051, now seen corresponding path program 1 times [2021-06-11 09:23:22,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:23:22,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411477372] [2021-06-11 09:23:22,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:23:22,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:23:22,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:23:22,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:23:22,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:23:22,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411477372] [2021-06-11 09:23:22,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:23:22,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 09:23:22,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664818784] [2021-06-11 09:23:22,293 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:23:22,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:23:22,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:23:22,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:23:22,293 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 221 [2021-06-11 09:23:22,294 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) [2021-06-11 09:23:22,294 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:23:22,294 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 221 [2021-06-11 09:23:22,294 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:23:22,314 INFO L129 PetriNetUnfolder]: 0/110 cut-off events. [2021-06-11 09:23:22,315 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:23:22,315 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. [2021-06-11 09:23:22,315 INFO L132 encePairwiseOnDemand]: 219/221 looper letters, 0 selfloop transitions, 1 changer transitions 0/110 dead transitions. [2021-06-11 09:23:22,315 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 110 transitions, 3354 flow [2021-06-11 09:23:22,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:23:22,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:23:22,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 656 transitions. [2021-06-11 09:23:22,315 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9894419306184012 [2021-06-11 09:23:22,315 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 656 transitions. [2021-06-11 09:23:22,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 656 transitions. [2021-06-11 09:23:22,316 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:23:22,316 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 656 transitions. [2021-06-11 09:23:22,316 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) [2021-06-11 09:23:22,317 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) [2021-06-11 09:23:22,317 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) [2021-06-11 09:23:22,317 INFO L185 Difference]: Start difference. First operand has 220 places, 111 transitions, 3354 flow. Second operand 3 states and 656 transitions. [2021-06-11 09:23:22,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 110 transitions, 3354 flow [2021-06-11 09:23:22,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 110 transitions, 492 flow, removed 1431 selfloop flow, removed 0 redundant places. [2021-06-11 09:23:22,356 INFO L241 Difference]: Finished difference. Result has 221 places, 110 transitions, 492 flow [2021-06-11 09:23:22,356 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} [2021-06-11 09:23:22,356 INFO L343 CegarLoopForPetriNet]: 220 programPoint places, 1 predicate places. [2021-06-11 09:23:22,356 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:23:22,356 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 221 places, 110 transitions, 492 flow [2021-06-11 09:23:22,356 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 221 places, 110 transitions, 492 flow [2021-06-11 09:23:22,357 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 221 places, 110 transitions, 492 flow [2021-06-11 09:23:22,367 INFO L129 PetriNetUnfolder]: 0/110 cut-off events. [2021-06-11 09:23:22,367 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:23:22,367 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. [2021-06-11 09:23:22,369 INFO L151 LiptonReduction]: Number of co-enabled transitions 5832 [2021-06-11 09:23:22,373 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:23:22,373 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:23:22,374 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 18 [2021-06-11 09:23:22,374 INFO L480 AbstractCegarLoop]: Abstraction has has 221 places, 110 transitions, 492 flow [2021-06-11 09:23:22,374 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) [2021-06-11 09:23:22,374 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:23:22,374 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] [2021-06-11 09:23:22,374 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2021-06-11 09:23:22,374 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:23:22,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:23:22,375 INFO L82 PathProgramCache]: Analyzing trace with hash -1780032071, now seen corresponding path program 1 times [2021-06-11 09:23:22,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:23:22,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065989694] [2021-06-11 09:23:22,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:23:22,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:23:22,383 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:23:22,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:23:22,384 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:23:22,391 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:23:22,391 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:23:22,391 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2021-06-11 09:23:22,391 WARN L342 ceAbstractionStarter]: 54 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:23:22,391 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 55 thread instances. [2021-06-11 09:23:22,445 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:23:22,445 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 09:23:22,445 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:23:22,445 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:23:22,445 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:23:22,446 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:23:22,446 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:23:22,446 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:23:22,446 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:23:22,446 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:23:22,447 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 281 places, 170 transitions, 3585 flow [2021-06-11 09:23:22,486 INFO L129 PetriNetUnfolder]: 0/335 cut-off events. [2021-06-11 09:23:22,487 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:23:22,487 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. [2021-06-11 09:23:22,487 INFO L82 GeneralOperation]: Start removeDead. Operand has 281 places, 170 transitions, 3585 flow [2021-06-11 09:23:22,488 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 279 places, 168 transitions, 3581 flow [2021-06-11 09:23:22,488 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:23:22,488 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 279 places, 168 transitions, 3581 flow [2021-06-11 09:23:22,488 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 279 places, 168 transitions, 3581 flow [2021-06-11 09:23:22,489 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 279 places, 168 transitions, 3581 flow [2021-06-11 09:23:22,520 INFO L129 PetriNetUnfolder]: 0/223 cut-off events. [2021-06-11 09:23:22,520 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:23:22,520 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. [2021-06-11 09:23:22,531 INFO L151 LiptonReduction]: Number of co-enabled transitions 18260 [2021-06-11 09:23:26,860 INFO L163 LiptonReduction]: Checked pairs total: 7535 [2021-06-11 09:23:26,860 INFO L165 LiptonReduction]: Total number of compositions: 55 [2021-06-11 09:23:26,860 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 4372 [2021-06-11 09:23:26,861 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-06-11 09:23:26,861 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:23:26,866 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:23:26,866 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-06-11 09:23:26,866 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:23:26,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:23:26,866 INFO L82 PathProgramCache]: Analyzing trace with hash 205219, now seen corresponding path program 1 times [2021-06-11 09:23:26,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:23:26,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328730399] [2021-06-11 09:23:26,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:23:26,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:23:26,876 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:23:26,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:23:26,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:23:26,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328730399] [2021-06-11 09:23:26,880 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:23:26,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 09:23:26,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538301411] [2021-06-11 09:23:26,880 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:23:26,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:23:26,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:23:26,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:23:26,881 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 225 [2021-06-11 09:23:26,881 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) [2021-06-11 09:23:26,881 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:23:26,881 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 225 [2021-06-11 09:23:26,881 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:23:26,904 INFO L129 PetriNetUnfolder]: 0/112 cut-off events. [2021-06-11 09:23:26,904 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:23:26,904 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. [2021-06-11 09:23:26,904 INFO L132 encePairwiseOnDemand]: 223/225 looper letters, 0 selfloop transitions, 1 changer transitions 0/112 dead transitions. [2021-06-11 09:23:26,904 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 112 transitions, 3471 flow [2021-06-11 09:23:26,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:23:26,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:23:26,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 668 transitions. [2021-06-11 09:23:26,905 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9896296296296296 [2021-06-11 09:23:26,905 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 668 transitions. [2021-06-11 09:23:26,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 668 transitions. [2021-06-11 09:23:26,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:23:26,905 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 668 transitions. [2021-06-11 09:23:26,906 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) [2021-06-11 09:23:26,906 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) [2021-06-11 09:23:26,906 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) [2021-06-11 09:23:26,906 INFO L185 Difference]: Start difference. First operand has 224 places, 113 transitions, 3471 flow. Second operand 3 states and 668 transitions. [2021-06-11 09:23:26,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 112 transitions, 3471 flow [2021-06-11 09:23:26,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 112 transitions, 501 flow, removed 1485 selfloop flow, removed 0 redundant places. [2021-06-11 09:23:26,947 INFO L241 Difference]: Finished difference. Result has 225 places, 112 transitions, 501 flow [2021-06-11 09:23:26,947 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} [2021-06-11 09:23:26,947 INFO L343 CegarLoopForPetriNet]: 224 programPoint places, 1 predicate places. [2021-06-11 09:23:26,947 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:23:26,947 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 225 places, 112 transitions, 501 flow [2021-06-11 09:23:26,947 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 225 places, 112 transitions, 501 flow [2021-06-11 09:23:26,948 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 225 places, 112 transitions, 501 flow [2021-06-11 09:23:26,958 INFO L129 PetriNetUnfolder]: 0/112 cut-off events. [2021-06-11 09:23:26,958 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:23:26,958 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. [2021-06-11 09:23:26,960 INFO L151 LiptonReduction]: Number of co-enabled transitions 6050 [2021-06-11 09:23:26,964 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:23:26,964 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:23:26,965 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 18 [2021-06-11 09:23:26,965 INFO L480 AbstractCegarLoop]: Abstraction has has 225 places, 112 transitions, 501 flow [2021-06-11 09:23:26,965 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) [2021-06-11 09:23:26,965 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:23:26,965 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] [2021-06-11 09:23:26,965 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2021-06-11 09:23:26,965 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:23:26,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:23:26,965 INFO L82 PathProgramCache]: Analyzing trace with hash -1407430542, now seen corresponding path program 1 times [2021-06-11 09:23:26,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:23:26,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644157743] [2021-06-11 09:23:26,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:23:26,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:23:26,975 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:23:26,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:23:26,977 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:23:26,983 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:23:26,984 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:23:26,984 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2021-06-11 09:23:26,984 WARN L342 ceAbstractionStarter]: 55 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:23:26,984 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 56 thread instances. [2021-06-11 09:23:27,041 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:23:27,041 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 09:23:27,042 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:23:27,042 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:23:27,042 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:23:27,042 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:23:27,042 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:23:27,042 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:23:27,042 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:23:27,042 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:23:27,043 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 286 places, 173 transitions, 3706 flow [2021-06-11 09:23:27,086 INFO L129 PetriNetUnfolder]: 0/341 cut-off events. [2021-06-11 09:23:27,086 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:23:27,087 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. [2021-06-11 09:23:27,087 INFO L82 GeneralOperation]: Start removeDead. Operand has 286 places, 173 transitions, 3706 flow [2021-06-11 09:23:27,088 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 284 places, 171 transitions, 3702 flow [2021-06-11 09:23:27,088 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:23:27,088 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 284 places, 171 transitions, 3702 flow [2021-06-11 09:23:27,088 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 284 places, 171 transitions, 3702 flow [2021-06-11 09:23:27,089 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 284 places, 171 transitions, 3702 flow [2021-06-11 09:23:27,121 INFO L129 PetriNetUnfolder]: 0/227 cut-off events. [2021-06-11 09:23:27,121 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:23:27,121 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. [2021-06-11 09:23:27,133 INFO L151 LiptonReduction]: Number of co-enabled transitions 18928 [2021-06-11 09:23:31,713 INFO L163 LiptonReduction]: Checked pairs total: 7812 [2021-06-11 09:23:31,713 INFO L165 LiptonReduction]: Total number of compositions: 56 [2021-06-11 09:23:31,713 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 4625 [2021-06-11 09:23:31,714 INFO L129 PetriNetUnfolder]: 0/1 cut-off events. [2021-06-11 09:23:31,714 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:23:31,714 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:23:31,714 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-06-11 09:23:31,714 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:23:31,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:23:31,714 INFO L82 PathProgramCache]: Analyzing trace with hash 212515, now seen corresponding path program 1 times [2021-06-11 09:23:31,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:23:31,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099392883] [2021-06-11 09:23:31,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:23:31,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:23:31,724 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:23:31,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:23:31,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:23:31,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099392883] [2021-06-11 09:23:31,727 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:23:31,727 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 09:23:31,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445645706] [2021-06-11 09:23:31,727 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:23:31,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:23:31,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:23:31,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:23:31,728 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 229 [2021-06-11 09:23:31,729 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) [2021-06-11 09:23:31,729 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:23:31,729 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 229 [2021-06-11 09:23:31,729 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:23:31,756 INFO L129 PetriNetUnfolder]: 0/114 cut-off events. [2021-06-11 09:23:31,756 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:23:31,756 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. [2021-06-11 09:23:31,756 INFO L132 encePairwiseOnDemand]: 227/229 looper letters, 0 selfloop transitions, 1 changer transitions 0/114 dead transitions. [2021-06-11 09:23:31,756 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 114 transitions, 3590 flow [2021-06-11 09:23:31,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:23:31,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:23:31,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 680 transitions. [2021-06-11 09:23:31,757 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9898107714701602 [2021-06-11 09:23:31,757 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 680 transitions. [2021-06-11 09:23:31,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 680 transitions. [2021-06-11 09:23:31,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:23:31,758 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 680 transitions. [2021-06-11 09:23:31,758 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) [2021-06-11 09:23:31,759 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) [2021-06-11 09:23:31,759 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) [2021-06-11 09:23:31,759 INFO L185 Difference]: Start difference. First operand has 228 places, 115 transitions, 3590 flow. Second operand 3 states and 680 transitions. [2021-06-11 09:23:31,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 114 transitions, 3590 flow [2021-06-11 09:23:31,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 114 transitions, 510 flow, removed 1540 selfloop flow, removed 0 redundant places. [2021-06-11 09:23:31,803 INFO L241 Difference]: Finished difference. Result has 229 places, 114 transitions, 510 flow [2021-06-11 09:23:31,803 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} [2021-06-11 09:23:31,803 INFO L343 CegarLoopForPetriNet]: 228 programPoint places, 1 predicate places. [2021-06-11 09:23:31,804 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:23:31,804 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 229 places, 114 transitions, 510 flow [2021-06-11 09:23:31,804 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 229 places, 114 transitions, 510 flow [2021-06-11 09:23:31,804 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 229 places, 114 transitions, 510 flow [2021-06-11 09:23:31,818 INFO L129 PetriNetUnfolder]: 0/114 cut-off events. [2021-06-11 09:23:31,818 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:23:31,818 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. [2021-06-11 09:23:31,820 INFO L151 LiptonReduction]: Number of co-enabled transitions 6272 [2021-06-11 09:23:31,825 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:23:31,825 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:23:31,825 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 21 [2021-06-11 09:23:31,825 INFO L480 AbstractCegarLoop]: Abstraction has has 229 places, 114 transitions, 510 flow [2021-06-11 09:23:31,826 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) [2021-06-11 09:23:31,826 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:23:31,826 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] [2021-06-11 09:23:31,826 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2021-06-11 09:23:31,826 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:23:31,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:23:31,826 INFO L82 PathProgramCache]: Analyzing trace with hash -396701316, now seen corresponding path program 1 times [2021-06-11 09:23:31,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:23:31,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802875193] [2021-06-11 09:23:31,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:23:31,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:23:31,836 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:23:31,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:23:31,837 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:23:31,845 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:23:31,845 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:23:31,845 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2021-06-11 09:23:31,845 WARN L342 ceAbstractionStarter]: 56 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:23:31,845 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 57 thread instances. [2021-06-11 09:23:31,895 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:23:31,895 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 09:23:31,896 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:23:31,896 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:23:31,896 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:23:31,896 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:23:31,896 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:23:31,896 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:23:31,896 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:23:31,896 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:23:31,898 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 291 places, 176 transitions, 3829 flow [2021-06-11 09:23:31,947 INFO L129 PetriNetUnfolder]: 0/347 cut-off events. [2021-06-11 09:23:31,948 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:23:31,948 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. [2021-06-11 09:23:31,948 INFO L82 GeneralOperation]: Start removeDead. Operand has 291 places, 176 transitions, 3829 flow [2021-06-11 09:23:31,949 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 289 places, 174 transitions, 3825 flow [2021-06-11 09:23:31,949 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:23:31,950 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 289 places, 174 transitions, 3825 flow [2021-06-11 09:23:31,950 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 289 places, 174 transitions, 3825 flow [2021-06-11 09:23:31,951 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 289 places, 174 transitions, 3825 flow [2021-06-11 09:23:31,991 INFO L129 PetriNetUnfolder]: 0/231 cut-off events. [2021-06-11 09:23:31,991 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:23:31,991 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. [2021-06-11 09:23:32,006 INFO L151 LiptonReduction]: Number of co-enabled transitions 19608 [2021-06-11 09:23:36,749 INFO L163 LiptonReduction]: Checked pairs total: 8094 [2021-06-11 09:23:36,749 INFO L165 LiptonReduction]: Total number of compositions: 57 [2021-06-11 09:23:36,750 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 4801 [2021-06-11 09:23:36,750 INFO L129 PetriNetUnfolder]: 0/1 cut-off events. [2021-06-11 09:23:36,750 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:23:36,750 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:23:36,750 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-06-11 09:23:36,750 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:23:36,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:23:36,751 INFO L82 PathProgramCache]: Analyzing trace with hash 219939, now seen corresponding path program 1 times [2021-06-11 09:23:36,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:23:36,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566997077] [2021-06-11 09:23:36,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:23:36,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:23:36,763 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:23:36,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:23:36,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:23:36,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566997077] [2021-06-11 09:23:36,766 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:23:36,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 09:23:36,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696571796] [2021-06-11 09:23:36,766 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:23:36,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:23:36,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:23:36,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:23:36,767 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 233 [2021-06-11 09:23:36,767 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) [2021-06-11 09:23:36,767 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:23:36,767 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 233 [2021-06-11 09:23:36,767 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:23:36,791 INFO L129 PetriNetUnfolder]: 0/116 cut-off events. [2021-06-11 09:23:36,791 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:23:36,791 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. [2021-06-11 09:23:36,792 INFO L132 encePairwiseOnDemand]: 231/233 looper letters, 0 selfloop transitions, 1 changer transitions 0/116 dead transitions. [2021-06-11 09:23:36,792 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 116 transitions, 3711 flow [2021-06-11 09:23:36,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:23:36,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:23:36,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 692 transitions. [2021-06-11 09:23:36,792 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9899856938483548 [2021-06-11 09:23:36,792 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 692 transitions. [2021-06-11 09:23:36,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 692 transitions. [2021-06-11 09:23:36,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:23:36,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 692 transitions. [2021-06-11 09:23:36,793 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) [2021-06-11 09:23:36,794 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) [2021-06-11 09:23:36,794 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) [2021-06-11 09:23:36,794 INFO L185 Difference]: Start difference. First operand has 232 places, 117 transitions, 3711 flow. Second operand 3 states and 692 transitions. [2021-06-11 09:23:36,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 116 transitions, 3711 flow [2021-06-11 09:23:36,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 116 transitions, 519 flow, removed 1596 selfloop flow, removed 0 redundant places. [2021-06-11 09:23:36,841 INFO L241 Difference]: Finished difference. Result has 233 places, 116 transitions, 519 flow [2021-06-11 09:23:36,841 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} [2021-06-11 09:23:36,841 INFO L343 CegarLoopForPetriNet]: 232 programPoint places, 1 predicate places. [2021-06-11 09:23:36,841 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:23:36,841 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 233 places, 116 transitions, 519 flow [2021-06-11 09:23:36,841 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 233 places, 116 transitions, 519 flow [2021-06-11 09:23:36,841 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 233 places, 116 transitions, 519 flow [2021-06-11 09:23:36,852 INFO L129 PetriNetUnfolder]: 0/116 cut-off events. [2021-06-11 09:23:36,853 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:23:36,853 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. [2021-06-11 09:23:36,854 INFO L151 LiptonReduction]: Number of co-enabled transitions 6498 [2021-06-11 09:23:36,859 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:23:36,859 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:23:36,859 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 18 [2021-06-11 09:23:36,860 INFO L480 AbstractCegarLoop]: Abstraction has has 233 places, 116 transitions, 519 flow [2021-06-11 09:23:36,860 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) [2021-06-11 09:23:36,860 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:23:36,860 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] [2021-06-11 09:23:36,860 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2021-06-11 09:23:36,860 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:23:36,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:23:36,860 INFO L82 PathProgramCache]: Analyzing trace with hash 1672576605, now seen corresponding path program 1 times [2021-06-11 09:23:36,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:23:36,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021618888] [2021-06-11 09:23:36,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:23:36,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:23:36,870 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:23:36,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:23:36,872 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:23:36,879 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:23:36,879 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:23:36,879 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2021-06-11 09:23:36,879 WARN L342 ceAbstractionStarter]: 57 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:23:36,879 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 58 thread instances. [2021-06-11 09:23:36,926 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:23:36,926 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 09:23:36,926 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:23:36,926 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:23:36,926 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:23:36,926 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:23:36,926 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:23:36,926 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:23:36,926 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:23:36,926 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:23:36,928 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 296 places, 179 transitions, 3954 flow [2021-06-11 09:23:36,971 INFO L129 PetriNetUnfolder]: 0/353 cut-off events. [2021-06-11 09:23:36,971 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:23:36,972 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. [2021-06-11 09:23:36,972 INFO L82 GeneralOperation]: Start removeDead. Operand has 296 places, 179 transitions, 3954 flow [2021-06-11 09:23:36,973 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 294 places, 177 transitions, 3950 flow [2021-06-11 09:23:36,973 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:23:36,973 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 294 places, 177 transitions, 3950 flow [2021-06-11 09:23:36,973 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 294 places, 177 transitions, 3950 flow [2021-06-11 09:23:36,974 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 294 places, 177 transitions, 3950 flow [2021-06-11 09:23:37,009 INFO L129 PetriNetUnfolder]: 0/235 cut-off events. [2021-06-11 09:23:37,009 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:23:37,010 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. [2021-06-11 09:23:37,022 INFO L151 LiptonReduction]: Number of co-enabled transitions 20300 [2021-06-11 09:23:41,779 INFO L163 LiptonReduction]: Checked pairs total: 8381 [2021-06-11 09:23:41,779 INFO L165 LiptonReduction]: Total number of compositions: 58 [2021-06-11 09:23:41,780 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 4807 [2021-06-11 09:23:41,780 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-06-11 09:23:41,780 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:23:41,780 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:23:41,780 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-06-11 09:23:41,780 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:23:41,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:23:41,781 INFO L82 PathProgramCache]: Analyzing trace with hash 227491, now seen corresponding path program 1 times [2021-06-11 09:23:41,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:23:41,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936888965] [2021-06-11 09:23:41,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:23:41,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:23:41,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:23:41,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:23:41,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:23:41,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936888965] [2021-06-11 09:23:41,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:23:41,796 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 09:23:41,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382861263] [2021-06-11 09:23:41,796 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:23:41,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:23:41,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:23:41,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:23:41,797 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 237 [2021-06-11 09:23:41,797 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) [2021-06-11 09:23:41,797 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:23:41,797 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 237 [2021-06-11 09:23:41,797 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:23:41,821 INFO L129 PetriNetUnfolder]: 0/118 cut-off events. [2021-06-11 09:23:41,821 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:23:41,821 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. [2021-06-11 09:23:41,822 INFO L132 encePairwiseOnDemand]: 235/237 looper letters, 0 selfloop transitions, 1 changer transitions 0/118 dead transitions. [2021-06-11 09:23:41,822 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 118 transitions, 3834 flow [2021-06-11 09:23:41,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:23:41,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:23:41,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 704 transitions. [2021-06-11 09:23:41,822 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9901547116736991 [2021-06-11 09:23:41,822 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 704 transitions. [2021-06-11 09:23:41,822 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 704 transitions. [2021-06-11 09:23:41,822 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:23:41,822 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 704 transitions. [2021-06-11 09:23:41,823 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) [2021-06-11 09:23:41,823 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) [2021-06-11 09:23:41,823 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) [2021-06-11 09:23:41,824 INFO L185 Difference]: Start difference. First operand has 236 places, 119 transitions, 3834 flow. Second operand 3 states and 704 transitions. [2021-06-11 09:23:41,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 118 transitions, 3834 flow [2021-06-11 09:23:41,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 118 transitions, 528 flow, removed 1653 selfloop flow, removed 0 redundant places. [2021-06-11 09:23:41,871 INFO L241 Difference]: Finished difference. Result has 237 places, 118 transitions, 528 flow [2021-06-11 09:23:41,871 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} [2021-06-11 09:23:41,872 INFO L343 CegarLoopForPetriNet]: 236 programPoint places, 1 predicate places. [2021-06-11 09:23:41,872 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:23:41,872 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 237 places, 118 transitions, 528 flow [2021-06-11 09:23:41,872 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 237 places, 118 transitions, 528 flow [2021-06-11 09:23:41,872 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 237 places, 118 transitions, 528 flow [2021-06-11 09:23:41,883 INFO L129 PetriNetUnfolder]: 0/118 cut-off events. [2021-06-11 09:23:41,883 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:23:41,883 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. [2021-06-11 09:23:41,885 INFO L151 LiptonReduction]: Number of co-enabled transitions 6728 [2021-06-11 09:23:41,890 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:23:41,890 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:23:41,890 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 18 [2021-06-11 09:23:41,890 INFO L480 AbstractCegarLoop]: Abstraction has has 237 places, 118 transitions, 528 flow [2021-06-11 09:23:41,890 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) [2021-06-11 09:23:41,891 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:23:41,891 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] [2021-06-11 09:23:41,891 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2021-06-11 09:23:41,891 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:23:41,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:23:41,891 INFO L82 PathProgramCache]: Analyzing trace with hash 874251583, now seen corresponding path program 1 times [2021-06-11 09:23:41,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:23:41,891 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238796589] [2021-06-11 09:23:41,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:23:41,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:23:41,901 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:23:41,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:23:41,903 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:23:41,910 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:23:41,910 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:23:41,910 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2021-06-11 09:23:41,910 WARN L342 ceAbstractionStarter]: 58 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:23:41,910 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 59 thread instances. [2021-06-11 09:23:41,958 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:23:41,958 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 09:23:41,958 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:23:41,958 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:23:41,958 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:23:41,958 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:23:41,958 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:23:41,958 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:23:41,958 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:23:41,958 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:23:41,960 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 301 places, 182 transitions, 4081 flow [2021-06-11 09:23:42,005 INFO L129 PetriNetUnfolder]: 0/359 cut-off events. [2021-06-11 09:23:42,005 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:23:42,005 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. [2021-06-11 09:23:42,005 INFO L82 GeneralOperation]: Start removeDead. Operand has 301 places, 182 transitions, 4081 flow [2021-06-11 09:23:42,006 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 299 places, 180 transitions, 4077 flow [2021-06-11 09:23:42,006 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:23:42,007 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 299 places, 180 transitions, 4077 flow [2021-06-11 09:23:42,007 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 299 places, 180 transitions, 4077 flow [2021-06-11 09:23:42,008 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 299 places, 180 transitions, 4077 flow [2021-06-11 09:23:42,043 INFO L129 PetriNetUnfolder]: 0/239 cut-off events. [2021-06-11 09:23:42,043 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:23:42,043 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. [2021-06-11 09:23:42,056 INFO L151 LiptonReduction]: Number of co-enabled transitions 21004 [2021-06-11 09:23:47,066 INFO L163 LiptonReduction]: Checked pairs total: 8673 [2021-06-11 09:23:47,067 INFO L165 LiptonReduction]: Total number of compositions: 59 [2021-06-11 09:23:47,067 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 5061 [2021-06-11 09:23:47,067 INFO L129 PetriNetUnfolder]: 0/1 cut-off events. [2021-06-11 09:23:47,067 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:23:47,068 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:23:47,068 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-06-11 09:23:47,068 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:23:47,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:23:47,068 INFO L82 PathProgramCache]: Analyzing trace with hash 235171, now seen corresponding path program 1 times [2021-06-11 09:23:47,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:23:47,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789526638] [2021-06-11 09:23:47,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:23:47,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:23:47,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:23:47,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:23:47,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:23:47,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789526638] [2021-06-11 09:23:47,082 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:23:47,082 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 09:23:47,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272779945] [2021-06-11 09:23:47,082 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:23:47,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:23:47,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:23:47,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:23:47,083 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 241 [2021-06-11 09:23:47,083 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) [2021-06-11 09:23:47,084 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:23:47,084 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 241 [2021-06-11 09:23:47,084 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:23:47,109 INFO L129 PetriNetUnfolder]: 0/120 cut-off events. [2021-06-11 09:23:47,109 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:23:47,110 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. [2021-06-11 09:23:47,110 INFO L132 encePairwiseOnDemand]: 239/241 looper letters, 0 selfloop transitions, 1 changer transitions 0/120 dead transitions. [2021-06-11 09:23:47,110 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 120 transitions, 3959 flow [2021-06-11 09:23:47,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:23:47,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:23:47,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 716 transitions. [2021-06-11 09:23:47,111 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9903181189488244 [2021-06-11 09:23:47,111 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 716 transitions. [2021-06-11 09:23:47,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 716 transitions. [2021-06-11 09:23:47,111 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:23:47,111 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 716 transitions. [2021-06-11 09:23:47,111 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) [2021-06-11 09:23:47,112 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) [2021-06-11 09:23:47,112 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) [2021-06-11 09:23:47,112 INFO L185 Difference]: Start difference. First operand has 240 places, 121 transitions, 3959 flow. Second operand 3 states and 716 transitions. [2021-06-11 09:23:47,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 120 transitions, 3959 flow [2021-06-11 09:23:47,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 120 transitions, 537 flow, removed 1711 selfloop flow, removed 0 redundant places. [2021-06-11 09:23:47,164 INFO L241 Difference]: Finished difference. Result has 241 places, 120 transitions, 537 flow [2021-06-11 09:23:47,164 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} [2021-06-11 09:23:47,165 INFO L343 CegarLoopForPetriNet]: 240 programPoint places, 1 predicate places. [2021-06-11 09:23:47,165 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:23:47,165 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 241 places, 120 transitions, 537 flow [2021-06-11 09:23:47,165 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 241 places, 120 transitions, 537 flow [2021-06-11 09:23:47,165 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 241 places, 120 transitions, 537 flow [2021-06-11 09:23:47,177 INFO L129 PetriNetUnfolder]: 0/120 cut-off events. [2021-06-11 09:23:47,177 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:23:47,177 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. [2021-06-11 09:23:47,179 INFO L151 LiptonReduction]: Number of co-enabled transitions 6962 [2021-06-11 09:23:47,184 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:23:47,184 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:23:47,184 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 19 [2021-06-11 09:23:47,184 INFO L480 AbstractCegarLoop]: Abstraction has has 241 places, 120 transitions, 537 flow [2021-06-11 09:23:47,184 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) [2021-06-11 09:23:47,184 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:23:47,185 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] [2021-06-11 09:23:47,185 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2021-06-11 09:23:47,185 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:23:47,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:23:47,185 INFO L82 PathProgramCache]: Analyzing trace with hash -1755309480, now seen corresponding path program 1 times [2021-06-11 09:23:47,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:23:47,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490900026] [2021-06-11 09:23:47,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:23:47,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:23:47,196 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:23:47,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:23:47,197 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:23:47,205 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:23:47,205 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:23:47,205 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2021-06-11 09:23:47,205 WARN L342 ceAbstractionStarter]: 59 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:23:47,205 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 60 thread instances. [2021-06-11 09:23:47,254 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:23:47,254 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 09:23:47,255 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:23:47,255 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:23:47,255 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:23:47,255 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:23:47,255 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:23:47,255 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:23:47,255 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:23:47,255 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:23:47,256 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 306 places, 185 transitions, 4210 flow [2021-06-11 09:23:47,303 INFO L129 PetriNetUnfolder]: 0/365 cut-off events. [2021-06-11 09:23:47,303 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:23:47,303 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. [2021-06-11 09:23:47,303 INFO L82 GeneralOperation]: Start removeDead. Operand has 306 places, 185 transitions, 4210 flow [2021-06-11 09:23:47,305 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 304 places, 183 transitions, 4206 flow [2021-06-11 09:23:47,305 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:23:47,305 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 304 places, 183 transitions, 4206 flow [2021-06-11 09:23:47,305 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 304 places, 183 transitions, 4206 flow [2021-06-11 09:23:47,306 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 304 places, 183 transitions, 4206 flow [2021-06-11 09:23:47,345 INFO L129 PetriNetUnfolder]: 0/243 cut-off events. [2021-06-11 09:23:47,345 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:23:47,346 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. [2021-06-11 09:23:47,359 INFO L151 LiptonReduction]: Number of co-enabled transitions 21720 [2021-06-11 09:23:52,674 INFO L163 LiptonReduction]: Checked pairs total: 8970 [2021-06-11 09:23:52,675 INFO L165 LiptonReduction]: Total number of compositions: 60 [2021-06-11 09:23:52,675 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 5370 [2021-06-11 09:23:52,675 INFO L129 PetriNetUnfolder]: 0/1 cut-off events. [2021-06-11 09:23:52,675 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:23:52,675 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:23:52,675 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-06-11 09:23:52,675 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:23:52,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:23:52,676 INFO L82 PathProgramCache]: Analyzing trace with hash 242979, now seen corresponding path program 1 times [2021-06-11 09:23:52,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:23:52,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959170112] [2021-06-11 09:23:52,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:23:52,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:23:52,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:23:52,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:23:52,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:23:52,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959170112] [2021-06-11 09:23:52,689 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:23:52,689 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 09:23:52,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437931213] [2021-06-11 09:23:52,689 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:23:52,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:23:52,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:23:52,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:23:52,690 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 245 [2021-06-11 09:23:52,690 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) [2021-06-11 09:23:52,690 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:23:52,690 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 245 [2021-06-11 09:23:52,690 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:23:52,716 INFO L129 PetriNetUnfolder]: 0/122 cut-off events. [2021-06-11 09:23:52,716 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:23:52,716 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. [2021-06-11 09:23:52,717 INFO L132 encePairwiseOnDemand]: 243/245 looper letters, 0 selfloop transitions, 1 changer transitions 0/122 dead transitions. [2021-06-11 09:23:52,717 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 122 transitions, 4086 flow [2021-06-11 09:23:52,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:23:52,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:23:52,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 728 transitions. [2021-06-11 09:23:52,717 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9904761904761905 [2021-06-11 09:23:52,717 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 728 transitions. [2021-06-11 09:23:52,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 728 transitions. [2021-06-11 09:23:52,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:23:52,717 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 728 transitions. [2021-06-11 09:23:52,718 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) [2021-06-11 09:23:52,719 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) [2021-06-11 09:23:52,719 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) [2021-06-11 09:23:52,719 INFO L185 Difference]: Start difference. First operand has 244 places, 123 transitions, 4086 flow. Second operand 3 states and 728 transitions. [2021-06-11 09:23:52,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 122 transitions, 4086 flow [2021-06-11 09:23:52,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 122 transitions, 546 flow, removed 1770 selfloop flow, removed 0 redundant places. [2021-06-11 09:23:52,773 INFO L241 Difference]: Finished difference. Result has 245 places, 122 transitions, 546 flow [2021-06-11 09:23:52,773 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} [2021-06-11 09:23:52,773 INFO L343 CegarLoopForPetriNet]: 244 programPoint places, 1 predicate places. [2021-06-11 09:23:52,773 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:23:52,773 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 245 places, 122 transitions, 546 flow [2021-06-11 09:23:52,773 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 245 places, 122 transitions, 546 flow [2021-06-11 09:23:52,774 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 245 places, 122 transitions, 546 flow [2021-06-11 09:23:52,786 INFO L129 PetriNetUnfolder]: 0/122 cut-off events. [2021-06-11 09:23:52,786 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:23:52,787 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. [2021-06-11 09:23:52,788 INFO L151 LiptonReduction]: Number of co-enabled transitions 7200 [2021-06-11 09:23:52,793 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:23:52,793 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:23:52,793 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 20 [2021-06-11 09:23:52,794 INFO L480 AbstractCegarLoop]: Abstraction has has 245 places, 122 transitions, 546 flow [2021-06-11 09:23:52,794 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) [2021-06-11 09:23:52,794 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:23:52,794 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] [2021-06-11 09:23:52,794 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2021-06-11 09:23:52,794 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:23:52,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:23:52,794 INFO L82 PathProgramCache]: Analyzing trace with hash -1829601534, now seen corresponding path program 1 times [2021-06-11 09:23:52,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:23:52,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071431261] [2021-06-11 09:23:52,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:23:52,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:23:52,805 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:23:52,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:23:52,807 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:23:52,814 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:23:52,814 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:23:52,815 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2021-06-11 09:23:52,815 WARN L342 ceAbstractionStarter]: 60 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:23:52,815 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 61 thread instances. [2021-06-11 09:23:52,860 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:23:52,861 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 09:23:52,861 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:23:52,861 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:23:52,861 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:23:52,861 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:23:52,861 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:23:52,861 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:23:52,861 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:23:52,861 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:23:52,863 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 311 places, 188 transitions, 4341 flow [2021-06-11 09:23:52,910 INFO L129 PetriNetUnfolder]: 0/371 cut-off events. [2021-06-11 09:23:52,910 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:23:52,910 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. [2021-06-11 09:23:52,910 INFO L82 GeneralOperation]: Start removeDead. Operand has 311 places, 188 transitions, 4341 flow [2021-06-11 09:23:52,912 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 309 places, 186 transitions, 4337 flow [2021-06-11 09:23:52,912 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:23:52,912 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 309 places, 186 transitions, 4337 flow [2021-06-11 09:23:52,912 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 309 places, 186 transitions, 4337 flow [2021-06-11 09:23:52,913 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 309 places, 186 transitions, 4337 flow [2021-06-11 09:23:52,951 INFO L129 PetriNetUnfolder]: 0/247 cut-off events. [2021-06-11 09:23:52,951 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:23:52,952 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. [2021-06-11 09:23:52,965 INFO L151 LiptonReduction]: Number of co-enabled transitions 22448 [2021-06-11 09:23:58,506 INFO L163 LiptonReduction]: Checked pairs total: 9272 [2021-06-11 09:23:58,506 INFO L165 LiptonReduction]: Total number of compositions: 61 [2021-06-11 09:23:58,507 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 5595 [2021-06-11 09:23:58,507 INFO L129 PetriNetUnfolder]: 0/1 cut-off events. [2021-06-11 09:23:58,507 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:23:58,507 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:23:58,507 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-06-11 09:23:58,507 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:23:58,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:23:58,508 INFO L82 PathProgramCache]: Analyzing trace with hash 250915, now seen corresponding path program 1 times [2021-06-11 09:23:58,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:23:58,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574469846] [2021-06-11 09:23:58,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:23:58,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:23:58,519 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:23:58,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:23:58,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:23:58,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574469846] [2021-06-11 09:23:58,522 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:23:58,522 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 09:23:58,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481762214] [2021-06-11 09:23:58,522 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:23:58,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:23:58,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:23:58,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:23:58,523 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 246 out of 249 [2021-06-11 09:23:58,523 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) [2021-06-11 09:23:58,523 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:23:58,523 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 246 of 249 [2021-06-11 09:23:58,523 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:23:58,550 INFO L129 PetriNetUnfolder]: 0/124 cut-off events. [2021-06-11 09:23:58,550 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:23:58,550 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. [2021-06-11 09:23:58,550 INFO L132 encePairwiseOnDemand]: 247/249 looper letters, 0 selfloop transitions, 1 changer transitions 0/124 dead transitions. [2021-06-11 09:23:58,550 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 124 transitions, 4215 flow [2021-06-11 09:23:58,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:23:58,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:23:58,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 740 transitions. [2021-06-11 09:23:58,551 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9906291834002677 [2021-06-11 09:23:58,551 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 740 transitions. [2021-06-11 09:23:58,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 740 transitions. [2021-06-11 09:23:58,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:23:58,551 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 740 transitions. [2021-06-11 09:23:58,552 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) [2021-06-11 09:23:58,552 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) [2021-06-11 09:23:58,553 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) [2021-06-11 09:23:58,553 INFO L185 Difference]: Start difference. First operand has 248 places, 125 transitions, 4215 flow. Second operand 3 states and 740 transitions. [2021-06-11 09:23:58,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 124 transitions, 4215 flow [2021-06-11 09:23:58,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 124 transitions, 555 flow, removed 1830 selfloop flow, removed 0 redundant places. [2021-06-11 09:23:58,611 INFO L241 Difference]: Finished difference. Result has 249 places, 124 transitions, 555 flow [2021-06-11 09:23:58,611 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} [2021-06-11 09:23:58,612 INFO L343 CegarLoopForPetriNet]: 248 programPoint places, 1 predicate places. [2021-06-11 09:23:58,612 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:23:58,612 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 249 places, 124 transitions, 555 flow [2021-06-11 09:23:58,612 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 249 places, 124 transitions, 555 flow [2021-06-11 09:23:58,612 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 249 places, 124 transitions, 555 flow [2021-06-11 09:23:58,624 INFO L129 PetriNetUnfolder]: 0/124 cut-off events. [2021-06-11 09:23:58,624 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:23:58,625 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. [2021-06-11 09:23:58,627 INFO L151 LiptonReduction]: Number of co-enabled transitions 7442 [2021-06-11 09:23:58,632 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:23:58,632 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:23:58,632 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 20 [2021-06-11 09:23:58,632 INFO L480 AbstractCegarLoop]: Abstraction has has 249 places, 124 transitions, 555 flow [2021-06-11 09:23:58,632 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) [2021-06-11 09:23:58,632 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:23:58,632 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] [2021-06-11 09:23:58,632 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2021-06-11 09:23:58,632 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:23:58,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:23:58,633 INFO L82 PathProgramCache]: Analyzing trace with hash -1408131485, now seen corresponding path program 1 times [2021-06-11 09:23:58,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:23:58,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987350263] [2021-06-11 09:23:58,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:23:58,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:23:58,644 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:23:58,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:23:58,645 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:23:58,653 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:23:58,654 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:23:58,654 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2021-06-11 09:23:58,654 WARN L342 ceAbstractionStarter]: 61 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:23:58,654 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 62 thread instances. [2021-06-11 09:23:58,702 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:23:58,702 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 09:23:58,703 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:23:58,703 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:23:58,703 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:23:58,703 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:23:58,703 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:23:58,703 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:23:58,703 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:23:58,703 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:23:58,704 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 316 places, 191 transitions, 4474 flow [2021-06-11 09:23:58,754 INFO L129 PetriNetUnfolder]: 0/377 cut-off events. [2021-06-11 09:23:58,754 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:23:58,755 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. [2021-06-11 09:23:58,755 INFO L82 GeneralOperation]: Start removeDead. Operand has 316 places, 191 transitions, 4474 flow [2021-06-11 09:23:58,756 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 314 places, 189 transitions, 4470 flow [2021-06-11 09:23:58,756 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:23:58,756 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 314 places, 189 transitions, 4470 flow [2021-06-11 09:23:58,756 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 314 places, 189 transitions, 4470 flow [2021-06-11 09:23:58,758 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 314 places, 189 transitions, 4470 flow [2021-06-11 09:23:58,798 INFO L129 PetriNetUnfolder]: 0/251 cut-off events. [2021-06-11 09:23:58,798 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:23:58,798 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. [2021-06-11 09:23:58,813 INFO L151 LiptonReduction]: Number of co-enabled transitions 23188 [2021-06-11 09:24:04,441 INFO L163 LiptonReduction]: Checked pairs total: 9579 [2021-06-11 09:24:04,442 INFO L165 LiptonReduction]: Total number of compositions: 62 [2021-06-11 09:24:04,442 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 5686 [2021-06-11 09:24:04,442 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-06-11 09:24:04,442 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:24:04,443 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:24:04,443 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-06-11 09:24:04,443 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:24:04,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:24:04,443 INFO L82 PathProgramCache]: Analyzing trace with hash 258979, now seen corresponding path program 1 times [2021-06-11 09:24:04,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:24:04,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056445630] [2021-06-11 09:24:04,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:24:04,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:24:04,455 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:04,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:24:04,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:24:04,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056445630] [2021-06-11 09:24:04,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:24:04,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 09:24:04,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162287305] [2021-06-11 09:24:04,458 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:24:04,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:24:04,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:24:04,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:24:04,459 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 253 [2021-06-11 09:24:04,459 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) [2021-06-11 09:24:04,459 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:24:04,459 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 253 [2021-06-11 09:24:04,459 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:24:04,488 INFO L129 PetriNetUnfolder]: 0/126 cut-off events. [2021-06-11 09:24:04,488 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:24:04,488 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. [2021-06-11 09:24:04,488 INFO L132 encePairwiseOnDemand]: 251/253 looper letters, 0 selfloop transitions, 1 changer transitions 0/126 dead transitions. [2021-06-11 09:24:04,488 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 126 transitions, 4346 flow [2021-06-11 09:24:04,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:24:04,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:24:04,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 752 transitions. [2021-06-11 09:24:04,489 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9907773386034255 [2021-06-11 09:24:04,489 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 752 transitions. [2021-06-11 09:24:04,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 752 transitions. [2021-06-11 09:24:04,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:24:04,489 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 752 transitions. [2021-06-11 09:24:04,490 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) [2021-06-11 09:24:04,490 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) [2021-06-11 09:24:04,490 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) [2021-06-11 09:24:04,490 INFO L185 Difference]: Start difference. First operand has 252 places, 127 transitions, 4346 flow. Second operand 3 states and 752 transitions. [2021-06-11 09:24:04,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 126 transitions, 4346 flow [2021-06-11 09:24:04,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 126 transitions, 564 flow, removed 1891 selfloop flow, removed 0 redundant places. [2021-06-11 09:24:04,557 INFO L241 Difference]: Finished difference. Result has 253 places, 126 transitions, 564 flow [2021-06-11 09:24:04,557 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} [2021-06-11 09:24:04,557 INFO L343 CegarLoopForPetriNet]: 252 programPoint places, 1 predicate places. [2021-06-11 09:24:04,557 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:24:04,557 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 253 places, 126 transitions, 564 flow [2021-06-11 09:24:04,557 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 253 places, 126 transitions, 564 flow [2021-06-11 09:24:04,558 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 253 places, 126 transitions, 564 flow [2021-06-11 09:24:04,570 INFO L129 PetriNetUnfolder]: 0/126 cut-off events. [2021-06-11 09:24:04,571 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:24:04,571 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. [2021-06-11 09:24:04,573 INFO L151 LiptonReduction]: Number of co-enabled transitions 7688 [2021-06-11 09:24:04,578 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:24:04,578 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:24:04,578 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 21 [2021-06-11 09:24:04,578 INFO L480 AbstractCegarLoop]: Abstraction has has 253 places, 126 transitions, 564 flow [2021-06-11 09:24:04,578 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) [2021-06-11 09:24:04,578 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:24:04,579 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] [2021-06-11 09:24:04,579 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2021-06-11 09:24:04,579 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:24:04,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:24:04,579 INFO L82 PathProgramCache]: Analyzing trace with hash 1519600837, now seen corresponding path program 1 times [2021-06-11 09:24:04,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:24:04,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272588110] [2021-06-11 09:24:04,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:24:04,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:24:04,590 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:24:04,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:24:04,591 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:24:04,600 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:24:04,600 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:24:04,600 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2021-06-11 09:24:04,600 WARN L342 ceAbstractionStarter]: 62 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:24:04,600 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 63 thread instances. [2021-06-11 09:24:04,655 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:24:04,655 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 09:24:04,655 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:24:04,655 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:24:04,655 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:24:04,655 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:24:04,655 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:24:04,655 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:24:04,655 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:24:04,655 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:24:04,657 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 321 places, 194 transitions, 4609 flow [2021-06-11 09:24:04,708 INFO L129 PetriNetUnfolder]: 0/383 cut-off events. [2021-06-11 09:24:04,709 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:24:04,709 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. [2021-06-11 09:24:04,709 INFO L82 GeneralOperation]: Start removeDead. Operand has 321 places, 194 transitions, 4609 flow [2021-06-11 09:24:04,710 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 319 places, 192 transitions, 4605 flow [2021-06-11 09:24:04,710 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:24:04,711 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 319 places, 192 transitions, 4605 flow [2021-06-11 09:24:04,711 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 319 places, 192 transitions, 4605 flow [2021-06-11 09:24:04,712 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 319 places, 192 transitions, 4605 flow [2021-06-11 09:24:04,753 INFO L129 PetriNetUnfolder]: 0/255 cut-off events. [2021-06-11 09:24:04,753 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:24:04,753 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. [2021-06-11 09:24:04,768 INFO L151 LiptonReduction]: Number of co-enabled transitions 23940 [2021-06-11 09:24:10,815 INFO L163 LiptonReduction]: Checked pairs total: 9891 [2021-06-11 09:24:10,816 INFO L165 LiptonReduction]: Total number of compositions: 63 [2021-06-11 09:24:10,816 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 6106 [2021-06-11 09:24:10,816 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-06-11 09:24:10,817 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:24:10,817 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:24:10,817 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-06-11 09:24:10,817 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:24:10,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:24:10,817 INFO L82 PathProgramCache]: Analyzing trace with hash 267171, now seen corresponding path program 1 times [2021-06-11 09:24:10,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:24:10,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888305448] [2021-06-11 09:24:10,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:24:10,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:24:10,829 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:10,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:24:10,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:24:10,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888305448] [2021-06-11 09:24:10,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:24:10,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 09:24:10,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131905859] [2021-06-11 09:24:10,832 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:24:10,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:24:10,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:24:10,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:24:10,833 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 257 [2021-06-11 09:24:10,833 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) [2021-06-11 09:24:10,833 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:24:10,833 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 257 [2021-06-11 09:24:10,833 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:24:10,862 INFO L129 PetriNetUnfolder]: 0/128 cut-off events. [2021-06-11 09:24:10,862 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:24:10,862 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. [2021-06-11 09:24:10,862 INFO L132 encePairwiseOnDemand]: 255/257 looper letters, 0 selfloop transitions, 1 changer transitions 0/128 dead transitions. [2021-06-11 09:24:10,862 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 128 transitions, 4479 flow [2021-06-11 09:24:10,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:24:10,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:24:10,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 764 transitions. [2021-06-11 09:24:10,863 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9909208819714657 [2021-06-11 09:24:10,863 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 764 transitions. [2021-06-11 09:24:10,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 764 transitions. [2021-06-11 09:24:10,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:24:10,863 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 764 transitions. [2021-06-11 09:24:10,864 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) [2021-06-11 09:24:10,864 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) [2021-06-11 09:24:10,864 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) [2021-06-11 09:24:10,864 INFO L185 Difference]: Start difference. First operand has 256 places, 129 transitions, 4479 flow. Second operand 3 states and 764 transitions. [2021-06-11 09:24:10,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 128 transitions, 4479 flow [2021-06-11 09:24:10,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 128 transitions, 573 flow, removed 1953 selfloop flow, removed 0 redundant places. [2021-06-11 09:24:10,936 INFO L241 Difference]: Finished difference. Result has 257 places, 128 transitions, 573 flow [2021-06-11 09:24:10,936 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} [2021-06-11 09:24:10,936 INFO L343 CegarLoopForPetriNet]: 256 programPoint places, 1 predicate places. [2021-06-11 09:24:10,936 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:24:10,937 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 257 places, 128 transitions, 573 flow [2021-06-11 09:24:10,937 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 257 places, 128 transitions, 573 flow [2021-06-11 09:24:10,937 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 257 places, 128 transitions, 573 flow [2021-06-11 09:24:10,950 INFO L129 PetriNetUnfolder]: 0/128 cut-off events. [2021-06-11 09:24:10,950 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:24:10,950 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. [2021-06-11 09:24:10,952 INFO L151 LiptonReduction]: Number of co-enabled transitions 7938 [2021-06-11 09:24:10,958 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:24:10,958 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:24:10,958 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 22 [2021-06-11 09:24:10,958 INFO L480 AbstractCegarLoop]: Abstraction has has 257 places, 128 transitions, 573 flow [2021-06-11 09:24:10,958 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) [2021-06-11 09:24:10,958 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:24:10,958 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 09:24:10,958 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2021-06-11 09:24:10,959 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:24:10,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:24:10,959 INFO L82 PathProgramCache]: Analyzing trace with hash -2027780994, now seen corresponding path program 1 times [2021-06-11 09:24:10,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:24:10,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529405499] [2021-06-11 09:24:10,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:24:10,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:24:10,970 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:24:10,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:24:10,972 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:24:10,980 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:24:10,981 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:24:10,981 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2021-06-11 09:24:10,981 WARN L342 ceAbstractionStarter]: 63 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:24:10,981 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 64 thread instances. [2021-06-11 09:24:11,037 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:24:11,037 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 09:24:11,038 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:24:11,038 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:24:11,038 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:24:11,038 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:24:11,038 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:24:11,038 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:24:11,038 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:24:11,038 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:24:11,040 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 326 places, 197 transitions, 4746 flow [2021-06-11 09:24:11,093 INFO L129 PetriNetUnfolder]: 0/389 cut-off events. [2021-06-11 09:24:11,093 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:24:11,093 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. [2021-06-11 09:24:11,093 INFO L82 GeneralOperation]: Start removeDead. Operand has 326 places, 197 transitions, 4746 flow [2021-06-11 09:24:11,095 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 324 places, 195 transitions, 4742 flow [2021-06-11 09:24:11,095 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:24:11,095 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 324 places, 195 transitions, 4742 flow [2021-06-11 09:24:11,095 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 324 places, 195 transitions, 4742 flow [2021-06-11 09:24:11,096 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 324 places, 195 transitions, 4742 flow [2021-06-11 09:24:11,139 INFO L129 PetriNetUnfolder]: 0/259 cut-off events. [2021-06-11 09:24:11,140 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:24:11,140 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. [2021-06-11 09:24:11,155 INFO L151 LiptonReduction]: Number of co-enabled transitions 24704 [2021-06-11 09:24:17,380 INFO L163 LiptonReduction]: Checked pairs total: 10208 [2021-06-11 09:24:17,381 INFO L165 LiptonReduction]: Total number of compositions: 64 [2021-06-11 09:24:17,381 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 6286 [2021-06-11 09:24:17,381 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-06-11 09:24:17,381 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:24:17,381 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:24:17,382 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-06-11 09:24:17,382 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:24:17,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:24:17,382 INFO L82 PathProgramCache]: Analyzing trace with hash 275491, now seen corresponding path program 1 times [2021-06-11 09:24:17,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:24:17,382 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944563523] [2021-06-11 09:24:17,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:24:17,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:24:17,394 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:17,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:24:17,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:24:17,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944563523] [2021-06-11 09:24:17,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:24:17,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 09:24:17,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593468467] [2021-06-11 09:24:17,399 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:24:17,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:24:17,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:24:17,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:24:17,400 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 261 [2021-06-11 09:24:17,400 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) [2021-06-11 09:24:17,400 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:24:17,400 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 261 [2021-06-11 09:24:17,400 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:24:17,430 INFO L129 PetriNetUnfolder]: 0/130 cut-off events. [2021-06-11 09:24:17,430 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:24:17,430 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. [2021-06-11 09:24:17,430 INFO L132 encePairwiseOnDemand]: 259/261 looper letters, 0 selfloop transitions, 1 changer transitions 0/130 dead transitions. [2021-06-11 09:24:17,430 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 130 transitions, 4614 flow [2021-06-11 09:24:17,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:24:17,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:24:17,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 776 transitions. [2021-06-11 09:24:17,431 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9910600255427842 [2021-06-11 09:24:17,431 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 776 transitions. [2021-06-11 09:24:17,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 776 transitions. [2021-06-11 09:24:17,431 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:24:17,431 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 776 transitions. [2021-06-11 09:24:17,432 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) [2021-06-11 09:24:17,432 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) [2021-06-11 09:24:17,433 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) [2021-06-11 09:24:17,433 INFO L185 Difference]: Start difference. First operand has 260 places, 131 transitions, 4614 flow. Second operand 3 states and 776 transitions. [2021-06-11 09:24:17,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 130 transitions, 4614 flow [2021-06-11 09:24:17,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 130 transitions, 582 flow, removed 2016 selfloop flow, removed 0 redundant places. [2021-06-11 09:24:17,512 INFO L241 Difference]: Finished difference. Result has 261 places, 130 transitions, 582 flow [2021-06-11 09:24:17,512 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} [2021-06-11 09:24:17,512 INFO L343 CegarLoopForPetriNet]: 260 programPoint places, 1 predicate places. [2021-06-11 09:24:17,512 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:24:17,512 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 261 places, 130 transitions, 582 flow [2021-06-11 09:24:17,512 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 261 places, 130 transitions, 582 flow [2021-06-11 09:24:17,513 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 261 places, 130 transitions, 582 flow [2021-06-11 09:24:17,526 INFO L129 PetriNetUnfolder]: 0/130 cut-off events. [2021-06-11 09:24:17,526 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:24:17,526 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. [2021-06-11 09:24:17,528 INFO L151 LiptonReduction]: Number of co-enabled transitions 8192 [2021-06-11 09:24:17,534 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:24:17,534 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:24:17,534 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 22 [2021-06-11 09:24:17,535 INFO L480 AbstractCegarLoop]: Abstraction has has 261 places, 130 transitions, 582 flow [2021-06-11 09:24:17,535 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) [2021-06-11 09:24:17,535 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:24:17,535 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] [2021-06-11 09:24:17,535 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2021-06-11 09:24:17,535 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:24:17,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:24:17,535 INFO L82 PathProgramCache]: Analyzing trace with hash -438281080, now seen corresponding path program 1 times [2021-06-11 09:24:17,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:24:17,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025189410] [2021-06-11 09:24:17,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:24:17,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:24:17,547 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:24:17,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:24:17,549 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:24:17,558 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:24:17,558 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:24:17,558 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2021-06-11 09:24:17,558 WARN L342 ceAbstractionStarter]: 64 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:24:17,558 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 65 thread instances. [2021-06-11 09:24:17,608 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:24:17,609 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 09:24:17,609 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:24:17,609 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:24:17,609 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:24:17,609 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:24:17,609 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:24:17,609 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:24:17,609 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:24:17,609 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:24:17,611 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 331 places, 200 transitions, 4885 flow [2021-06-11 09:24:17,668 INFO L129 PetriNetUnfolder]: 0/395 cut-off events. [2021-06-11 09:24:17,668 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:24:17,669 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. [2021-06-11 09:24:17,669 INFO L82 GeneralOperation]: Start removeDead. Operand has 331 places, 200 transitions, 4885 flow [2021-06-11 09:24:17,671 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 329 places, 198 transitions, 4881 flow [2021-06-11 09:24:17,671 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:24:17,671 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 329 places, 198 transitions, 4881 flow [2021-06-11 09:24:17,671 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 329 places, 198 transitions, 4881 flow [2021-06-11 09:24:17,672 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 329 places, 198 transitions, 4881 flow [2021-06-11 09:24:17,717 INFO L129 PetriNetUnfolder]: 0/263 cut-off events. [2021-06-11 09:24:17,717 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:24:17,717 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. [2021-06-11 09:24:17,733 INFO L151 LiptonReduction]: Number of co-enabled transitions 25480 [2021-06-11 09:24:24,555 INFO L163 LiptonReduction]: Checked pairs total: 10530 [2021-06-11 09:24:24,555 INFO L165 LiptonReduction]: Total number of compositions: 65 [2021-06-11 09:24:24,555 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 6884 [2021-06-11 09:24:24,556 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-06-11 09:24:24,556 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:24:24,556 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:24:24,556 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-06-11 09:24:24,556 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:24:24,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:24:24,556 INFO L82 PathProgramCache]: Analyzing trace with hash 283939, now seen corresponding path program 1 times [2021-06-11 09:24:24,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:24:24,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592292873] [2021-06-11 09:24:24,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:24:24,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:24:24,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:24,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:24:24,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:24:24,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592292873] [2021-06-11 09:24:24,571 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:24:24,571 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 09:24:24,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909854967] [2021-06-11 09:24:24,571 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:24:24,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:24:24,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:24:24,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:24:24,572 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 262 out of 265 [2021-06-11 09:24:24,573 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) [2021-06-11 09:24:24,573 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:24:24,573 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 262 of 265 [2021-06-11 09:24:24,573 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:24:24,603 INFO L129 PetriNetUnfolder]: 0/132 cut-off events. [2021-06-11 09:24:24,603 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:24:24,604 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. [2021-06-11 09:24:24,604 INFO L132 encePairwiseOnDemand]: 263/265 looper letters, 0 selfloop transitions, 1 changer transitions 0/132 dead transitions. [2021-06-11 09:24:24,604 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 132 transitions, 4751 flow [2021-06-11 09:24:24,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:24:24,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:24:24,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 788 transitions. [2021-06-11 09:24:24,605 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9911949685534591 [2021-06-11 09:24:24,605 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 788 transitions. [2021-06-11 09:24:24,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 788 transitions. [2021-06-11 09:24:24,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:24:24,605 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 788 transitions. [2021-06-11 09:24:24,605 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) [2021-06-11 09:24:24,606 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) [2021-06-11 09:24:24,606 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) [2021-06-11 09:24:24,606 INFO L185 Difference]: Start difference. First operand has 264 places, 133 transitions, 4751 flow. Second operand 3 states and 788 transitions. [2021-06-11 09:24:24,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 132 transitions, 4751 flow [2021-06-11 09:24:24,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 132 transitions, 591 flow, removed 2080 selfloop flow, removed 0 redundant places. [2021-06-11 09:24:24,687 INFO L241 Difference]: Finished difference. Result has 265 places, 132 transitions, 591 flow [2021-06-11 09:24:24,687 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} [2021-06-11 09:24:24,687 INFO L343 CegarLoopForPetriNet]: 264 programPoint places, 1 predicate places. [2021-06-11 09:24:24,687 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:24:24,687 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 265 places, 132 transitions, 591 flow [2021-06-11 09:24:24,687 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 265 places, 132 transitions, 591 flow [2021-06-11 09:24:24,688 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 265 places, 132 transitions, 591 flow [2021-06-11 09:24:24,701 INFO L129 PetriNetUnfolder]: 0/132 cut-off events. [2021-06-11 09:24:24,702 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:24:24,702 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. [2021-06-11 09:24:24,704 INFO L151 LiptonReduction]: Number of co-enabled transitions 8450 [2021-06-11 09:24:24,710 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:24:24,710 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:24:24,710 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 23 [2021-06-11 09:24:24,710 INFO L480 AbstractCegarLoop]: Abstraction has has 265 places, 132 transitions, 591 flow [2021-06-11 09:24:24,710 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) [2021-06-11 09:24:24,710 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:24:24,711 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] [2021-06-11 09:24:24,711 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2021-06-11 09:24:24,711 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:24:24,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:24:24,711 INFO L82 PathProgramCache]: Analyzing trace with hash 19023529, now seen corresponding path program 1 times [2021-06-11 09:24:24,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:24:24,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521021432] [2021-06-11 09:24:24,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:24:24,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:24:24,723 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:24:24,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:24:24,724 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:24:24,733 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:24:24,733 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:24:24,734 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2021-06-11 09:24:24,734 WARN L342 ceAbstractionStarter]: 65 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:24:24,734 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 66 thread instances. [2021-06-11 09:24:24,801 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:24:24,801 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 09:24:24,801 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:24:24,801 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:24:24,801 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:24:24,801 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:24:24,801 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:24:24,801 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:24:24,801 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:24:24,801 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:24:24,804 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 336 places, 203 transitions, 5026 flow [2021-06-11 09:24:25,057 INFO L129 PetriNetUnfolder]: 0/401 cut-off events. [2021-06-11 09:24:25,057 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:24:25,057 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. [2021-06-11 09:24:25,057 INFO L82 GeneralOperation]: Start removeDead. Operand has 336 places, 203 transitions, 5026 flow [2021-06-11 09:24:25,059 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 334 places, 201 transitions, 5022 flow [2021-06-11 09:24:25,059 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:24:25,059 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 334 places, 201 transitions, 5022 flow [2021-06-11 09:24:25,059 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 334 places, 201 transitions, 5022 flow [2021-06-11 09:24:25,060 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 334 places, 201 transitions, 5022 flow [2021-06-11 09:24:25,106 INFO L129 PetriNetUnfolder]: 0/267 cut-off events. [2021-06-11 09:24:25,106 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:24:25,106 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. [2021-06-11 09:24:25,123 INFO L151 LiptonReduction]: Number of co-enabled transitions 26268 [2021-06-11 09:24:32,398 INFO L163 LiptonReduction]: Checked pairs total: 10857 [2021-06-11 09:24:32,398 INFO L165 LiptonReduction]: Total number of compositions: 66 [2021-06-11 09:24:32,399 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 7340 [2021-06-11 09:24:32,399 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-06-11 09:24:32,399 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:24:32,399 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:24:32,400 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-06-11 09:24:32,400 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:24:32,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:24:32,400 INFO L82 PathProgramCache]: Analyzing trace with hash 292515, now seen corresponding path program 1 times [2021-06-11 09:24:32,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:24:32,400 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313738036] [2021-06-11 09:24:32,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:24:32,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:24:32,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:32,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:24:32,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:24:32,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313738036] [2021-06-11 09:24:32,416 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:24:32,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 09:24:32,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186481189] [2021-06-11 09:24:32,416 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:24:32,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:24:32,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:24:32,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:24:32,417 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 269 [2021-06-11 09:24:32,417 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) [2021-06-11 09:24:32,417 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:24:32,417 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 269 [2021-06-11 09:24:32,417 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:24:32,454 INFO L129 PetriNetUnfolder]: 0/134 cut-off events. [2021-06-11 09:24:32,454 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:24:32,454 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. [2021-06-11 09:24:32,455 INFO L132 encePairwiseOnDemand]: 267/269 looper letters, 0 selfloop transitions, 1 changer transitions 0/134 dead transitions. [2021-06-11 09:24:32,455 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 134 transitions, 4890 flow [2021-06-11 09:24:32,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:24:32,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:24:32,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 800 transitions. [2021-06-11 09:24:32,455 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9913258983890955 [2021-06-11 09:24:32,455 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 800 transitions. [2021-06-11 09:24:32,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 800 transitions. [2021-06-11 09:24:32,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:24:32,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 800 transitions. [2021-06-11 09:24:32,456 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) [2021-06-11 09:24:32,457 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) [2021-06-11 09:24:32,457 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) [2021-06-11 09:24:32,457 INFO L185 Difference]: Start difference. First operand has 268 places, 135 transitions, 4890 flow. Second operand 3 states and 800 transitions. [2021-06-11 09:24:32,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 134 transitions, 4890 flow [2021-06-11 09:24:32,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 134 transitions, 600 flow, removed 2145 selfloop flow, removed 0 redundant places. [2021-06-11 09:24:32,542 INFO L241 Difference]: Finished difference. Result has 269 places, 134 transitions, 600 flow [2021-06-11 09:24:32,542 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} [2021-06-11 09:24:32,542 INFO L343 CegarLoopForPetriNet]: 268 programPoint places, 1 predicate places. [2021-06-11 09:24:32,542 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:24:32,543 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 269 places, 134 transitions, 600 flow [2021-06-11 09:24:32,543 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 269 places, 134 transitions, 600 flow [2021-06-11 09:24:32,543 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 269 places, 134 transitions, 600 flow [2021-06-11 09:24:32,561 INFO L129 PetriNetUnfolder]: 0/134 cut-off events. [2021-06-11 09:24:32,561 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:24:32,561 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. [2021-06-11 09:24:32,564 INFO L151 LiptonReduction]: Number of co-enabled transitions 8712 [2021-06-11 09:24:32,570 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:24:32,570 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:24:32,570 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 28 [2021-06-11 09:24:32,570 INFO L480 AbstractCegarLoop]: Abstraction has has 269 places, 134 transitions, 600 flow [2021-06-11 09:24:32,570 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) [2021-06-11 09:24:32,570 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:24:32,571 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] [2021-06-11 09:24:32,571 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2021-06-11 09:24:32,571 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:24:32,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:24:32,571 INFO L82 PathProgramCache]: Analyzing trace with hash 1713949771, now seen corresponding path program 1 times [2021-06-11 09:24:32,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:24:32,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461447984] [2021-06-11 09:24:32,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:24:32,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:24:32,583 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:24:32,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:24:32,585 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:24:32,594 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:24:32,595 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:24:32,595 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2021-06-11 09:24:32,595 WARN L342 ceAbstractionStarter]: 66 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:24:32,595 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 67 thread instances. [2021-06-11 09:24:32,648 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:24:32,649 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 09:24:32,649 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:24:32,649 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:24:32,649 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:24:32,649 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:24:32,649 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:24:32,649 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:24:32,649 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:24:32,649 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:24:32,651 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 341 places, 206 transitions, 5169 flow [2021-06-11 09:24:32,710 INFO L129 PetriNetUnfolder]: 0/407 cut-off events. [2021-06-11 09:24:32,710 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:24:32,710 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. [2021-06-11 09:24:32,710 INFO L82 GeneralOperation]: Start removeDead. Operand has 341 places, 206 transitions, 5169 flow [2021-06-11 09:24:32,712 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 339 places, 204 transitions, 5165 flow [2021-06-11 09:24:32,712 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:24:32,712 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 339 places, 204 transitions, 5165 flow [2021-06-11 09:24:32,713 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 339 places, 204 transitions, 5165 flow [2021-06-11 09:24:32,714 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 339 places, 204 transitions, 5165 flow [2021-06-11 09:24:32,761 INFO L129 PetriNetUnfolder]: 0/271 cut-off events. [2021-06-11 09:24:32,761 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:24:32,762 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. [2021-06-11 09:24:32,779 INFO L151 LiptonReduction]: Number of co-enabled transitions 27068 [2021-06-11 09:24:40,236 INFO L163 LiptonReduction]: Checked pairs total: 11189 [2021-06-11 09:24:40,236 INFO L165 LiptonReduction]: Total number of compositions: 67 [2021-06-11 09:24:40,236 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 7524 [2021-06-11 09:24:40,237 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-06-11 09:24:40,237 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:24:40,237 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:24:40,237 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-06-11 09:24:40,237 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:24:40,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:24:40,237 INFO L82 PathProgramCache]: Analyzing trace with hash 301219, now seen corresponding path program 1 times [2021-06-11 09:24:40,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:24:40,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134629764] [2021-06-11 09:24:40,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:24:40,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:24:40,250 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:40,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:24:40,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:24:40,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134629764] [2021-06-11 09:24:40,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:24:40,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 09:24:40,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898136082] [2021-06-11 09:24:40,253 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:24:40,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:24:40,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:24:40,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:24:40,254 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 273 [2021-06-11 09:24:40,255 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) [2021-06-11 09:24:40,255 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:24:40,255 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 273 [2021-06-11 09:24:40,255 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:24:40,288 INFO L129 PetriNetUnfolder]: 0/136 cut-off events. [2021-06-11 09:24:40,288 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:24:40,288 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. [2021-06-11 09:24:40,288 INFO L132 encePairwiseOnDemand]: 271/273 looper letters, 0 selfloop transitions, 1 changer transitions 0/136 dead transitions. [2021-06-11 09:24:40,288 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 136 transitions, 5031 flow [2021-06-11 09:24:40,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:24:40,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:24:40,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 812 transitions. [2021-06-11 09:24:40,289 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9914529914529915 [2021-06-11 09:24:40,289 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 812 transitions. [2021-06-11 09:24:40,289 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 812 transitions. [2021-06-11 09:24:40,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:24:40,289 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 812 transitions. [2021-06-11 09:24:40,290 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) [2021-06-11 09:24:40,290 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) [2021-06-11 09:24:40,290 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) [2021-06-11 09:24:40,290 INFO L185 Difference]: Start difference. First operand has 272 places, 137 transitions, 5031 flow. Second operand 3 states and 812 transitions. [2021-06-11 09:24:40,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 136 transitions, 5031 flow [2021-06-11 09:24:40,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 136 transitions, 609 flow, removed 2211 selfloop flow, removed 0 redundant places. [2021-06-11 09:24:40,372 INFO L241 Difference]: Finished difference. Result has 273 places, 136 transitions, 609 flow [2021-06-11 09:24:40,372 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} [2021-06-11 09:24:40,372 INFO L343 CegarLoopForPetriNet]: 272 programPoint places, 1 predicate places. [2021-06-11 09:24:40,372 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:24:40,372 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 273 places, 136 transitions, 609 flow [2021-06-11 09:24:40,372 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 273 places, 136 transitions, 609 flow [2021-06-11 09:24:40,373 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 273 places, 136 transitions, 609 flow [2021-06-11 09:24:40,387 INFO L129 PetriNetUnfolder]: 0/136 cut-off events. [2021-06-11 09:24:40,387 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:24:40,387 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. [2021-06-11 09:24:40,390 INFO L151 LiptonReduction]: Number of co-enabled transitions 8978 [2021-06-11 09:24:40,395 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:24:40,395 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:24:40,396 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 24 [2021-06-11 09:24:40,396 INFO L480 AbstractCegarLoop]: Abstraction has has 273 places, 136 transitions, 609 flow [2021-06-11 09:24:40,396 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) [2021-06-11 09:24:40,396 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:24:40,396 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] [2021-06-11 09:24:40,396 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2021-06-11 09:24:40,396 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:24:40,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:24:40,396 INFO L82 PathProgramCache]: Analyzing trace with hash 1351835364, now seen corresponding path program 1 times [2021-06-11 09:24:40,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:24:40,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353940671] [2021-06-11 09:24:40,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:24:40,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:24:40,410 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:24:40,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:24:40,412 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:24:40,421 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:24:40,421 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:24:40,421 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2021-06-11 09:24:40,421 WARN L342 ceAbstractionStarter]: 67 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:24:40,421 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 68 thread instances. [2021-06-11 09:24:40,483 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:24:40,483 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 09:24:40,483 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:24:40,484 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:24:40,484 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:24:40,484 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:24:40,484 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:24:40,484 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:24:40,484 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:24:40,484 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:24:40,485 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 346 places, 209 transitions, 5314 flow [2021-06-11 09:24:40,547 INFO L129 PetriNetUnfolder]: 0/413 cut-off events. [2021-06-11 09:24:40,547 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:24:40,547 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. [2021-06-11 09:24:40,547 INFO L82 GeneralOperation]: Start removeDead. Operand has 346 places, 209 transitions, 5314 flow [2021-06-11 09:24:40,549 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 344 places, 207 transitions, 5310 flow [2021-06-11 09:24:40,549 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:24:40,549 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 344 places, 207 transitions, 5310 flow [2021-06-11 09:24:40,549 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 344 places, 207 transitions, 5310 flow [2021-06-11 09:24:40,551 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 344 places, 207 transitions, 5310 flow [2021-06-11 09:24:40,600 INFO L129 PetriNetUnfolder]: 0/275 cut-off events. [2021-06-11 09:24:40,600 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:24:40,600 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. [2021-06-11 09:24:40,618 INFO L151 LiptonReduction]: Number of co-enabled transitions 27880 [2021-06-11 09:24:48,415 INFO L163 LiptonReduction]: Checked pairs total: 11526 [2021-06-11 09:24:48,415 INFO L165 LiptonReduction]: Total number of compositions: 68 [2021-06-11 09:24:48,415 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 7866 [2021-06-11 09:24:48,416 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-06-11 09:24:48,416 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:24:48,416 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:24:48,416 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-06-11 09:24:48,416 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:24:48,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:24:48,416 INFO L82 PathProgramCache]: Analyzing trace with hash 310051, now seen corresponding path program 1 times [2021-06-11 09:24:48,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:24:48,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472985025] [2021-06-11 09:24:48,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:24:48,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:24:48,433 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:48,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:24:48,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:24:48,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472985025] [2021-06-11 09:24:48,436 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:24:48,436 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 09:24:48,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300583474] [2021-06-11 09:24:48,437 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:24:48,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:24:48,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:24:48,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:24:48,437 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 277 [2021-06-11 09:24:48,438 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) [2021-06-11 09:24:48,438 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:24:48,438 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 277 [2021-06-11 09:24:48,438 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:24:48,472 INFO L129 PetriNetUnfolder]: 0/138 cut-off events. [2021-06-11 09:24:48,472 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:24:48,473 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. [2021-06-11 09:24:48,473 INFO L132 encePairwiseOnDemand]: 275/277 looper letters, 0 selfloop transitions, 1 changer transitions 0/138 dead transitions. [2021-06-11 09:24:48,473 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 138 transitions, 5174 flow [2021-06-11 09:24:48,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:24:48,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:24:48,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 824 transitions. [2021-06-11 09:24:48,473 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9915764139590855 [2021-06-11 09:24:48,474 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 824 transitions. [2021-06-11 09:24:48,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 824 transitions. [2021-06-11 09:24:48,474 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:24:48,474 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 824 transitions. [2021-06-11 09:24:48,474 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) [2021-06-11 09:24:48,475 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) [2021-06-11 09:24:48,475 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) [2021-06-11 09:24:48,475 INFO L185 Difference]: Start difference. First operand has 276 places, 139 transitions, 5174 flow. Second operand 3 states and 824 transitions. [2021-06-11 09:24:48,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 138 transitions, 5174 flow [2021-06-11 09:24:48,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 138 transitions, 618 flow, removed 2278 selfloop flow, removed 0 redundant places. [2021-06-11 09:24:48,557 INFO L241 Difference]: Finished difference. Result has 277 places, 138 transitions, 618 flow [2021-06-11 09:24:48,557 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} [2021-06-11 09:24:48,557 INFO L343 CegarLoopForPetriNet]: 276 programPoint places, 1 predicate places. [2021-06-11 09:24:48,557 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:24:48,557 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 277 places, 138 transitions, 618 flow [2021-06-11 09:24:48,557 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 277 places, 138 transitions, 618 flow [2021-06-11 09:24:48,558 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 277 places, 138 transitions, 618 flow [2021-06-11 09:24:48,573 INFO L129 PetriNetUnfolder]: 0/138 cut-off events. [2021-06-11 09:24:48,573 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:24:48,573 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. [2021-06-11 09:24:48,575 INFO L151 LiptonReduction]: Number of co-enabled transitions 9248 [2021-06-11 09:24:48,581 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:24:48,581 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:24:48,581 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 24 [2021-06-11 09:24:48,582 INFO L480 AbstractCegarLoop]: Abstraction has has 277 places, 138 transitions, 618 flow [2021-06-11 09:24:48,582 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) [2021-06-11 09:24:48,582 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:24:48,582 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] [2021-06-11 09:24:48,582 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2021-06-11 09:24:48,582 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:24:48,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:24:48,582 INFO L82 PathProgramCache]: Analyzing trace with hash -1133995506, now seen corresponding path program 1 times [2021-06-11 09:24:48,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:24:48,582 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408557854] [2021-06-11 09:24:48,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:24:48,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:24:48,595 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:24:48,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:24:48,597 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:24:48,617 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:24:48,617 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:24:48,617 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2021-06-11 09:24:48,617 WARN L342 ceAbstractionStarter]: 68 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:24:48,617 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 69 thread instances. [2021-06-11 09:24:48,669 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:24:48,669 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 09:24:48,670 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:24:48,670 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:24:48,670 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:24:48,670 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:24:48,670 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:24:48,670 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:24:48,670 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:24:48,670 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:24:48,672 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 351 places, 212 transitions, 5461 flow [2021-06-11 09:24:48,734 INFO L129 PetriNetUnfolder]: 0/419 cut-off events. [2021-06-11 09:24:48,735 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:24:48,735 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. [2021-06-11 09:24:48,735 INFO L82 GeneralOperation]: Start removeDead. Operand has 351 places, 212 transitions, 5461 flow [2021-06-11 09:24:48,737 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 349 places, 210 transitions, 5457 flow [2021-06-11 09:24:48,737 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:24:48,737 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 349 places, 210 transitions, 5457 flow [2021-06-11 09:24:48,737 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 349 places, 210 transitions, 5457 flow [2021-06-11 09:24:48,738 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 349 places, 210 transitions, 5457 flow [2021-06-11 09:24:48,792 INFO L129 PetriNetUnfolder]: 0/279 cut-off events. [2021-06-11 09:24:48,792 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:24:48,792 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. [2021-06-11 09:24:48,811 INFO L151 LiptonReduction]: Number of co-enabled transitions 28704 [2021-06-11 09:24:57,605 INFO L163 LiptonReduction]: Checked pairs total: 11868 [2021-06-11 09:24:57,605 INFO L165 LiptonReduction]: Total number of compositions: 69 [2021-06-11 09:24:57,606 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 8869 [2021-06-11 09:24:57,606 INFO L129 PetriNetUnfolder]: 0/1 cut-off events. [2021-06-11 09:24:57,606 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:24:57,606 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:24:57,606 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-06-11 09:24:57,606 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:24:57,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:24:57,607 INFO L82 PathProgramCache]: Analyzing trace with hash 319011, now seen corresponding path program 1 times [2021-06-11 09:24:57,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:24:57,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595765253] [2021-06-11 09:24:57,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:24:57,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:24:57,620 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:57,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:24:57,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:24:57,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595765253] [2021-06-11 09:24:57,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:24:57,624 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 09:24:57,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221131565] [2021-06-11 09:24:57,624 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:24:57,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:24:57,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:24:57,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:24:57,625 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 278 out of 281 [2021-06-11 09:24:57,625 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) [2021-06-11 09:24:57,625 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:24:57,625 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 278 of 281 [2021-06-11 09:24:57,625 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:24:57,661 INFO L129 PetriNetUnfolder]: 0/140 cut-off events. [2021-06-11 09:24:57,661 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:24:57,661 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. [2021-06-11 09:24:57,661 INFO L132 encePairwiseOnDemand]: 279/281 looper letters, 0 selfloop transitions, 1 changer transitions 0/140 dead transitions. [2021-06-11 09:24:57,661 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 140 transitions, 5319 flow [2021-06-11 09:24:57,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:24:57,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:24:57,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 836 transitions. [2021-06-11 09:24:57,662 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9916963226571768 [2021-06-11 09:24:57,662 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 836 transitions. [2021-06-11 09:24:57,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 836 transitions. [2021-06-11 09:24:57,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:24:57,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 836 transitions. [2021-06-11 09:24:57,663 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) [2021-06-11 09:24:57,664 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) [2021-06-11 09:24:57,664 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) [2021-06-11 09:24:57,664 INFO L185 Difference]: Start difference. First operand has 280 places, 141 transitions, 5319 flow. Second operand 3 states and 836 transitions. [2021-06-11 09:24:57,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 140 transitions, 5319 flow [2021-06-11 09:24:57,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 140 transitions, 627 flow, removed 2346 selfloop flow, removed 0 redundant places. [2021-06-11 09:24:57,746 INFO L241 Difference]: Finished difference. Result has 281 places, 140 transitions, 627 flow [2021-06-11 09:24:57,746 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} [2021-06-11 09:24:57,746 INFO L343 CegarLoopForPetriNet]: 280 programPoint places, 1 predicate places. [2021-06-11 09:24:57,746 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:24:57,746 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 281 places, 140 transitions, 627 flow [2021-06-11 09:24:57,747 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 281 places, 140 transitions, 627 flow [2021-06-11 09:24:57,747 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 281 places, 140 transitions, 627 flow [2021-06-11 09:24:57,762 INFO L129 PetriNetUnfolder]: 0/140 cut-off events. [2021-06-11 09:24:57,763 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:24:57,763 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. [2021-06-11 09:24:57,766 INFO L151 LiptonReduction]: Number of co-enabled transitions 9522 [2021-06-11 09:24:57,772 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:24:57,772 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:24:57,772 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 26 [2021-06-11 09:24:57,773 INFO L480 AbstractCegarLoop]: Abstraction has has 281 places, 140 transitions, 627 flow [2021-06-11 09:24:57,773 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) [2021-06-11 09:24:57,773 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:24:57,773 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] [2021-06-11 09:24:57,773 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2021-06-11 09:24:57,773 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:24:57,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:24:57,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1823164207, now seen corresponding path program 1 times [2021-06-11 09:24:57,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:24:57,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377453870] [2021-06-11 09:24:57,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:24:57,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:24:57,788 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:24:57,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:24:57,790 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:24:57,799 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:24:57,800 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:24:57,800 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2021-06-11 09:24:57,800 WARN L342 ceAbstractionStarter]: 69 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:24:57,800 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 70 thread instances. [2021-06-11 09:24:57,868 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:24:57,868 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 09:24:57,868 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:24:57,868 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:24:57,868 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:24:57,868 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:24:57,868 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:24:57,869 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:24:57,869 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:24:57,869 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:24:57,870 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 356 places, 215 transitions, 5610 flow [2021-06-11 09:24:57,939 INFO L129 PetriNetUnfolder]: 0/425 cut-off events. [2021-06-11 09:24:57,939 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:24:57,939 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. [2021-06-11 09:24:57,939 INFO L82 GeneralOperation]: Start removeDead. Operand has 356 places, 215 transitions, 5610 flow [2021-06-11 09:24:57,941 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 354 places, 213 transitions, 5606 flow [2021-06-11 09:24:57,941 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:24:57,941 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 354 places, 213 transitions, 5606 flow [2021-06-11 09:24:57,941 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 354 places, 213 transitions, 5606 flow [2021-06-11 09:24:57,943 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 354 places, 213 transitions, 5606 flow [2021-06-11 09:24:57,997 INFO L129 PetriNetUnfolder]: 0/283 cut-off events. [2021-06-11 09:24:57,998 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:24:57,998 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. [2021-06-11 09:24:58,018 INFO L151 LiptonReduction]: Number of co-enabled transitions 29540 [2021-06-11 09:25:07,565 INFO L163 LiptonReduction]: Checked pairs total: 12215 [2021-06-11 09:25:07,565 INFO L165 LiptonReduction]: Total number of compositions: 70 [2021-06-11 09:25:07,566 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 9625 [2021-06-11 09:25:07,566 INFO L129 PetriNetUnfolder]: 0/1 cut-off events. [2021-06-11 09:25:07,566 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:25:07,566 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:25:07,566 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-06-11 09:25:07,566 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:25:07,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:25:07,567 INFO L82 PathProgramCache]: Analyzing trace with hash 328099, now seen corresponding path program 1 times [2021-06-11 09:25:07,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:25:07,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012573671] [2021-06-11 09:25:07,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:25:07,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:25:07,581 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:07,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:25:07,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:25:07,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012573671] [2021-06-11 09:25:07,586 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:25:07,586 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 09:25:07,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366915378] [2021-06-11 09:25:07,586 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:25:07,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:25:07,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:25:07,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:25:07,587 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 282 out of 285 [2021-06-11 09:25:07,587 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) [2021-06-11 09:25:07,587 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:25:07,587 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 282 of 285 [2021-06-11 09:25:07,587 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:25:07,625 INFO L129 PetriNetUnfolder]: 0/142 cut-off events. [2021-06-11 09:25:07,625 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:25:07,625 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. [2021-06-11 09:25:07,626 INFO L132 encePairwiseOnDemand]: 283/285 looper letters, 0 selfloop transitions, 1 changer transitions 0/142 dead transitions. [2021-06-11 09:25:07,626 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 142 transitions, 5466 flow [2021-06-11 09:25:07,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:25:07,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:25:07,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 848 transitions. [2021-06-11 09:25:07,626 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.991812865497076 [2021-06-11 09:25:07,626 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 848 transitions. [2021-06-11 09:25:07,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 848 transitions. [2021-06-11 09:25:07,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:25:07,627 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 848 transitions. [2021-06-11 09:25:07,627 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) [2021-06-11 09:25:07,628 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) [2021-06-11 09:25:07,628 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) [2021-06-11 09:25:07,628 INFO L185 Difference]: Start difference. First operand has 284 places, 143 transitions, 5466 flow. Second operand 3 states and 848 transitions. [2021-06-11 09:25:07,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 142 transitions, 5466 flow [2021-06-11 09:25:07,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 142 transitions, 636 flow, removed 2415 selfloop flow, removed 0 redundant places. [2021-06-11 09:25:07,711 INFO L241 Difference]: Finished difference. Result has 285 places, 142 transitions, 636 flow [2021-06-11 09:25:07,711 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} [2021-06-11 09:25:07,711 INFO L343 CegarLoopForPetriNet]: 284 programPoint places, 1 predicate places. [2021-06-11 09:25:07,711 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:25:07,711 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 285 places, 142 transitions, 636 flow [2021-06-11 09:25:07,711 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 285 places, 142 transitions, 636 flow [2021-06-11 09:25:07,712 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 285 places, 142 transitions, 636 flow [2021-06-11 09:25:07,742 INFO L129 PetriNetUnfolder]: 0/142 cut-off events. [2021-06-11 09:25:07,742 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:25:07,742 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. [2021-06-11 09:25:07,745 INFO L151 LiptonReduction]: Number of co-enabled transitions 9800 [2021-06-11 09:25:07,753 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:25:07,753 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:25:07,753 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 42 [2021-06-11 09:25:07,753 INFO L480 AbstractCegarLoop]: Abstraction has has 285 places, 142 transitions, 636 flow [2021-06-11 09:25:07,753 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) [2021-06-11 09:25:07,753 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:25:07,753 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] [2021-06-11 09:25:07,753 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2021-06-11 09:25:07,753 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:25:07,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:25:07,754 INFO L82 PathProgramCache]: Analyzing trace with hash 1518914513, now seen corresponding path program 1 times [2021-06-11 09:25:07,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:25:07,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556867866] [2021-06-11 09:25:07,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:25:07,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:25:07,768 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:25:07,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:25:07,770 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:25:07,781 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:25:07,781 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:25:07,781 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2021-06-11 09:25:07,781 WARN L342 ceAbstractionStarter]: 70 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:25:07,781 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 71 thread instances. [2021-06-11 09:25:07,856 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:25:07,856 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 09:25:07,856 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:25:07,856 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:25:07,856 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:25:07,856 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:25:07,857 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:25:07,857 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:25:07,857 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:25:07,857 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:25:07,858 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 361 places, 218 transitions, 5761 flow [2021-06-11 09:25:08,090 INFO L129 PetriNetUnfolder]: 0/431 cut-off events. [2021-06-11 09:25:08,090 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:25:08,090 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. [2021-06-11 09:25:08,090 INFO L82 GeneralOperation]: Start removeDead. Operand has 361 places, 218 transitions, 5761 flow [2021-06-11 09:25:08,092 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 359 places, 216 transitions, 5757 flow [2021-06-11 09:25:08,092 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:25:08,093 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 359 places, 216 transitions, 5757 flow [2021-06-11 09:25:08,093 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 359 places, 216 transitions, 5757 flow [2021-06-11 09:25:08,094 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 359 places, 216 transitions, 5757 flow [2021-06-11 09:25:08,152 INFO L129 PetriNetUnfolder]: 0/287 cut-off events. [2021-06-11 09:25:08,152 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:25:08,153 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. [2021-06-11 09:25:08,173 INFO L151 LiptonReduction]: Number of co-enabled transitions 30388 [2021-06-11 09:25:18,355 INFO L163 LiptonReduction]: Checked pairs total: 12567 [2021-06-11 09:25:18,355 INFO L165 LiptonReduction]: Total number of compositions: 71 [2021-06-11 09:25:18,356 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 10264 [2021-06-11 09:25:18,356 INFO L129 PetriNetUnfolder]: 0/1 cut-off events. [2021-06-11 09:25:18,356 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:25:18,356 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:25:18,356 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-06-11 09:25:18,356 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:25:18,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:25:18,357 INFO L82 PathProgramCache]: Analyzing trace with hash 337315, now seen corresponding path program 1 times [2021-06-11 09:25:18,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:25:18,357 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412946440] [2021-06-11 09:25:18,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:25:18,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:25:18,372 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:18,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:25:18,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:25:18,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412946440] [2021-06-11 09:25:18,376 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:25:18,376 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 09:25:18,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015084878] [2021-06-11 09:25:18,376 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:25:18,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:25:18,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:25:18,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:25:18,377 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 286 out of 289 [2021-06-11 09:25:18,377 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) [2021-06-11 09:25:18,377 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:25:18,377 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 286 of 289 [2021-06-11 09:25:18,377 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:25:18,417 INFO L129 PetriNetUnfolder]: 0/144 cut-off events. [2021-06-11 09:25:18,417 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:25:18,417 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. [2021-06-11 09:25:18,417 INFO L132 encePairwiseOnDemand]: 287/289 looper letters, 0 selfloop transitions, 1 changer transitions 0/144 dead transitions. [2021-06-11 09:25:18,417 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 144 transitions, 5615 flow [2021-06-11 09:25:18,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:25:18,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:25:18,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 860 transitions. [2021-06-11 09:25:18,418 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9919261822376009 [2021-06-11 09:25:18,418 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 860 transitions. [2021-06-11 09:25:18,418 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 860 transitions. [2021-06-11 09:25:18,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:25:18,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 860 transitions. [2021-06-11 09:25:18,419 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) [2021-06-11 09:25:18,419 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) [2021-06-11 09:25:18,420 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) [2021-06-11 09:25:18,420 INFO L185 Difference]: Start difference. First operand has 288 places, 145 transitions, 5615 flow. Second operand 3 states and 860 transitions. [2021-06-11 09:25:18,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 144 transitions, 5615 flow [2021-06-11 09:25:18,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 144 transitions, 645 flow, removed 2485 selfloop flow, removed 0 redundant places. [2021-06-11 09:25:18,512 INFO L241 Difference]: Finished difference. Result has 289 places, 144 transitions, 645 flow [2021-06-11 09:25:18,513 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} [2021-06-11 09:25:18,513 INFO L343 CegarLoopForPetriNet]: 288 programPoint places, 1 predicate places. [2021-06-11 09:25:18,513 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:25:18,513 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 289 places, 144 transitions, 645 flow [2021-06-11 09:25:18,513 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 289 places, 144 transitions, 645 flow [2021-06-11 09:25:18,514 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 289 places, 144 transitions, 645 flow [2021-06-11 09:25:18,530 INFO L129 PetriNetUnfolder]: 0/144 cut-off events. [2021-06-11 09:25:18,530 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:25:18,531 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. [2021-06-11 09:25:18,533 INFO L151 LiptonReduction]: Number of co-enabled transitions 10082 [2021-06-11 09:25:18,560 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:25:18,560 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:25:18,560 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 47 [2021-06-11 09:25:18,560 INFO L480 AbstractCegarLoop]: Abstraction has has 289 places, 144 transitions, 645 flow [2021-06-11 09:25:18,560 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) [2021-06-11 09:25:18,560 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:25:18,560 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] [2021-06-11 09:25:18,561 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2021-06-11 09:25:18,561 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:25:18,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:25:18,561 INFO L82 PathProgramCache]: Analyzing trace with hash 1746041226, now seen corresponding path program 1 times [2021-06-11 09:25:18,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:25:18,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247425909] [2021-06-11 09:25:18,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:25:18,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:25:18,602 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:25:18,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:25:18,604 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:25:18,641 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:25:18,641 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:25:18,641 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2021-06-11 09:25:18,641 WARN L342 ceAbstractionStarter]: 71 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:25:18,641 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 72 thread instances. [2021-06-11 09:25:18,768 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:25:18,770 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 09:25:18,770 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:25:18,770 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:25:18,770 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:25:18,770 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:25:18,770 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:25:18,771 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:25:18,771 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:25:18,771 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:25:18,772 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 366 places, 221 transitions, 5914 flow [2021-06-11 09:25:18,907 INFO L129 PetriNetUnfolder]: 0/437 cut-off events. [2021-06-11 09:25:18,907 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:25:18,907 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. [2021-06-11 09:25:18,907 INFO L82 GeneralOperation]: Start removeDead. Operand has 366 places, 221 transitions, 5914 flow [2021-06-11 09:25:18,910 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 364 places, 219 transitions, 5910 flow [2021-06-11 09:25:18,910 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:25:18,910 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 364 places, 219 transitions, 5910 flow [2021-06-11 09:25:18,910 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 364 places, 219 transitions, 5910 flow [2021-06-11 09:25:18,912 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 364 places, 219 transitions, 5910 flow [2021-06-11 09:25:19,013 INFO L129 PetriNetUnfolder]: 0/291 cut-off events. [2021-06-11 09:25:19,013 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:25:19,013 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. [2021-06-11 09:25:19,035 INFO L151 LiptonReduction]: Number of co-enabled transitions 31248 [2021-06-11 09:25:29,480 INFO L163 LiptonReduction]: Checked pairs total: 12924 [2021-06-11 09:25:29,480 INFO L165 LiptonReduction]: Total number of compositions: 72 [2021-06-11 09:25:29,481 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 10571 [2021-06-11 09:25:29,481 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-06-11 09:25:29,481 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:25:29,481 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:25:29,481 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-06-11 09:25:29,481 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:25:29,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:25:29,482 INFO L82 PathProgramCache]: Analyzing trace with hash 346659, now seen corresponding path program 1 times [2021-06-11 09:25:29,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:25:29,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546526857] [2021-06-11 09:25:29,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:25:29,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:25:29,497 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:29,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:25:29,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:25:29,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546526857] [2021-06-11 09:25:29,500 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:25:29,500 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 09:25:29,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240160083] [2021-06-11 09:25:29,501 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:25:29,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:25:29,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:25:29,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:25:29,501 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 293 [2021-06-11 09:25:29,502 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) [2021-06-11 09:25:29,502 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:25:29,502 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 293 [2021-06-11 09:25:29,502 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:25:29,542 INFO L129 PetriNetUnfolder]: 0/146 cut-off events. [2021-06-11 09:25:29,543 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:25:29,543 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. [2021-06-11 09:25:29,543 INFO L132 encePairwiseOnDemand]: 291/293 looper letters, 0 selfloop transitions, 1 changer transitions 0/146 dead transitions. [2021-06-11 09:25:29,543 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 146 transitions, 5766 flow [2021-06-11 09:25:29,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:25:29,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:25:29,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 872 transitions. [2021-06-11 09:25:29,544 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9920364050056882 [2021-06-11 09:25:29,544 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 872 transitions. [2021-06-11 09:25:29,544 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 872 transitions. [2021-06-11 09:25:29,544 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:25:29,544 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 872 transitions. [2021-06-11 09:25:29,545 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) [2021-06-11 09:25:29,545 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) [2021-06-11 09:25:29,546 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) [2021-06-11 09:25:29,546 INFO L185 Difference]: Start difference. First operand has 292 places, 147 transitions, 5766 flow. Second operand 3 states and 872 transitions. [2021-06-11 09:25:29,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 146 transitions, 5766 flow [2021-06-11 09:25:29,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 146 transitions, 654 flow, removed 2556 selfloop flow, removed 0 redundant places. [2021-06-11 09:25:29,629 INFO L241 Difference]: Finished difference. Result has 293 places, 146 transitions, 654 flow [2021-06-11 09:25:29,629 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} [2021-06-11 09:25:29,629 INFO L343 CegarLoopForPetriNet]: 292 programPoint places, 1 predicate places. [2021-06-11 09:25:29,629 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:25:29,629 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 293 places, 146 transitions, 654 flow [2021-06-11 09:25:29,629 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 293 places, 146 transitions, 654 flow [2021-06-11 09:25:29,629 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 293 places, 146 transitions, 654 flow [2021-06-11 09:25:29,646 INFO L129 PetriNetUnfolder]: 0/146 cut-off events. [2021-06-11 09:25:29,646 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:25:29,646 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. [2021-06-11 09:25:29,649 INFO L151 LiptonReduction]: Number of co-enabled transitions 10368 [2021-06-11 09:25:29,656 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:25:29,656 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:25:29,656 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 27 [2021-06-11 09:25:29,657 INFO L480 AbstractCegarLoop]: Abstraction has has 293 places, 146 transitions, 654 flow [2021-06-11 09:25:29,657 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) [2021-06-11 09:25:29,657 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:25:29,657 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] [2021-06-11 09:25:29,657 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2021-06-11 09:25:29,657 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:25:29,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:25:29,657 INFO L82 PathProgramCache]: Analyzing trace with hash 748644244, now seen corresponding path program 1 times [2021-06-11 09:25:29,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:25:29,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228662218] [2021-06-11 09:25:29,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:25:29,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:25:29,672 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:25:29,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:25:29,674 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:25:29,685 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:25:29,685 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:25:29,686 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2021-06-11 09:25:29,686 WARN L342 ceAbstractionStarter]: 72 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:25:29,686 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 73 thread instances. [2021-06-11 09:25:29,767 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:25:29,767 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 09:25:29,767 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:25:29,767 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:25:29,768 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:25:29,768 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:25:29,768 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:25:29,768 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:25:29,768 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:25:29,768 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:25:29,769 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 371 places, 224 transitions, 6069 flow [2021-06-11 09:25:29,848 INFO L129 PetriNetUnfolder]: 0/443 cut-off events. [2021-06-11 09:25:29,848 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:25:29,848 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. [2021-06-11 09:25:29,848 INFO L82 GeneralOperation]: Start removeDead. Operand has 371 places, 224 transitions, 6069 flow [2021-06-11 09:25:29,850 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 369 places, 222 transitions, 6065 flow [2021-06-11 09:25:29,850 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:25:29,851 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 369 places, 222 transitions, 6065 flow [2021-06-11 09:25:29,851 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 369 places, 222 transitions, 6065 flow [2021-06-11 09:25:29,852 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 369 places, 222 transitions, 6065 flow [2021-06-11 09:25:29,913 INFO L129 PetriNetUnfolder]: 0/295 cut-off events. [2021-06-11 09:25:29,913 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:25:29,913 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. [2021-06-11 09:25:29,936 INFO L151 LiptonReduction]: Number of co-enabled transitions 32120 [2021-06-11 09:25:40,723 INFO L163 LiptonReduction]: Checked pairs total: 13286 [2021-06-11 09:25:40,723 INFO L165 LiptonReduction]: Total number of compositions: 73 [2021-06-11 09:25:40,723 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 10873 [2021-06-11 09:25:40,724 INFO L129 PetriNetUnfolder]: 0/1 cut-off events. [2021-06-11 09:25:40,724 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:25:40,724 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:25:40,724 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-06-11 09:25:40,724 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:25:40,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:25:40,724 INFO L82 PathProgramCache]: Analyzing trace with hash 356131, now seen corresponding path program 1 times [2021-06-11 09:25:40,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:25:40,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970549285] [2021-06-11 09:25:40,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:25:40,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:25:40,739 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:40,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:25:40,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:25:40,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970549285] [2021-06-11 09:25:40,743 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:25:40,743 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 09:25:40,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956815483] [2021-06-11 09:25:40,743 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:25:40,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:25:40,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:25:40,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:25:40,744 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 297 [2021-06-11 09:25:40,744 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) [2021-06-11 09:25:40,744 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:25:40,744 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 297 [2021-06-11 09:25:40,744 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:25:40,786 INFO L129 PetriNetUnfolder]: 0/148 cut-off events. [2021-06-11 09:25:40,786 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:25:40,786 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. [2021-06-11 09:25:40,787 INFO L132 encePairwiseOnDemand]: 295/297 looper letters, 0 selfloop transitions, 1 changer transitions 0/148 dead transitions. [2021-06-11 09:25:40,787 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 148 transitions, 5919 flow [2021-06-11 09:25:40,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:25:40,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:25:40,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 884 transitions. [2021-06-11 09:25:40,787 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9921436588103255 [2021-06-11 09:25:40,787 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 884 transitions. [2021-06-11 09:25:40,787 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 884 transitions. [2021-06-11 09:25:40,788 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:25:40,788 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 884 transitions. [2021-06-11 09:25:40,788 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) [2021-06-11 09:25:40,789 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) [2021-06-11 09:25:40,789 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) [2021-06-11 09:25:40,789 INFO L185 Difference]: Start difference. First operand has 296 places, 149 transitions, 5919 flow. Second operand 3 states and 884 transitions. [2021-06-11 09:25:40,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 148 transitions, 5919 flow [2021-06-11 09:25:40,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 148 transitions, 663 flow, removed 2628 selfloop flow, removed 0 redundant places. [2021-06-11 09:25:40,875 INFO L241 Difference]: Finished difference. Result has 297 places, 148 transitions, 663 flow [2021-06-11 09:25:40,875 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} [2021-06-11 09:25:40,875 INFO L343 CegarLoopForPetriNet]: 296 programPoint places, 1 predicate places. [2021-06-11 09:25:40,875 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:25:40,875 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 297 places, 148 transitions, 663 flow [2021-06-11 09:25:40,875 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 297 places, 148 transitions, 663 flow [2021-06-11 09:25:40,876 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 297 places, 148 transitions, 663 flow [2021-06-11 09:25:40,893 INFO L129 PetriNetUnfolder]: 0/148 cut-off events. [2021-06-11 09:25:40,893 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:25:40,894 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. [2021-06-11 09:25:40,897 INFO L151 LiptonReduction]: Number of co-enabled transitions 10658 [2021-06-11 09:25:40,904 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:25:40,904 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:25:40,905 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 30 [2021-06-11 09:25:40,905 INFO L480 AbstractCegarLoop]: Abstraction has has 297 places, 148 transitions, 663 flow [2021-06-11 09:25:40,905 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) [2021-06-11 09:25:40,905 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:25:40,905 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] [2021-06-11 09:25:40,905 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2021-06-11 09:25:40,905 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:25:40,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:25:40,905 INFO L82 PathProgramCache]: Analyzing trace with hash -1012633611, now seen corresponding path program 1 times [2021-06-11 09:25:40,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:25:40,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14976153] [2021-06-11 09:25:40,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:25:40,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:25:40,921 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:25:40,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:25:40,923 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:25:40,933 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:25:40,933 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:25:40,933 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2021-06-11 09:25:40,934 WARN L342 ceAbstractionStarter]: 73 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:25:40,934 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 74 thread instances. [2021-06-11 09:25:41,001 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:25:41,001 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 09:25:41,002 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:25:41,002 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:25:41,002 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:25:41,002 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:25:41,002 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:25:41,002 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:25:41,002 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:25:41,002 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:25:41,003 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 376 places, 227 transitions, 6226 flow [2021-06-11 09:25:41,079 INFO L129 PetriNetUnfolder]: 0/449 cut-off events. [2021-06-11 09:25:41,079 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:25:41,079 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. [2021-06-11 09:25:41,079 INFO L82 GeneralOperation]: Start removeDead. Operand has 376 places, 227 transitions, 6226 flow [2021-06-11 09:25:41,081 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 374 places, 225 transitions, 6222 flow [2021-06-11 09:25:41,082 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:25:41,082 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 374 places, 225 transitions, 6222 flow [2021-06-11 09:25:41,082 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 374 places, 225 transitions, 6222 flow [2021-06-11 09:25:41,083 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 374 places, 225 transitions, 6222 flow [2021-06-11 09:25:41,145 INFO L129 PetriNetUnfolder]: 0/299 cut-off events. [2021-06-11 09:25:41,145 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:25:41,145 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. [2021-06-11 09:25:41,168 INFO L151 LiptonReduction]: Number of co-enabled transitions 33004 [2021-06-11 09:25:52,491 INFO L163 LiptonReduction]: Checked pairs total: 13653 [2021-06-11 09:25:52,491 INFO L165 LiptonReduction]: Total number of compositions: 74 [2021-06-11 09:25:52,491 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 11410 [2021-06-11 09:25:52,492 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-06-11 09:25:52,492 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:25:52,492 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:25:52,492 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-06-11 09:25:52,492 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:25:52,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:25:52,492 INFO L82 PathProgramCache]: Analyzing trace with hash 365731, now seen corresponding path program 1 times [2021-06-11 09:25:52,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:25:52,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517009737] [2021-06-11 09:25:52,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:25:52,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:25:52,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:52,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:25:52,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:25:52,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517009737] [2021-06-11 09:25:52,511 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:25:52,511 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 09:25:52,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158732491] [2021-06-11 09:25:52,512 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:25:52,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:25:52,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:25:52,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:25:52,512 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 298 out of 301 [2021-06-11 09:25:52,513 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) [2021-06-11 09:25:52,513 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:25:52,513 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 298 of 301 [2021-06-11 09:25:52,513 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:25:52,555 INFO L129 PetriNetUnfolder]: 0/150 cut-off events. [2021-06-11 09:25:52,555 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:25:52,555 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. [2021-06-11 09:25:52,556 INFO L132 encePairwiseOnDemand]: 299/301 looper letters, 0 selfloop transitions, 1 changer transitions 0/150 dead transitions. [2021-06-11 09:25:52,556 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 150 transitions, 6074 flow [2021-06-11 09:25:52,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:25:52,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:25:52,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 896 transitions. [2021-06-11 09:25:52,556 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9922480620155039 [2021-06-11 09:25:52,556 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 896 transitions. [2021-06-11 09:25:52,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 896 transitions. [2021-06-11 09:25:52,557 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:25:52,557 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 896 transitions. [2021-06-11 09:25:52,557 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) [2021-06-11 09:25:52,558 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) [2021-06-11 09:25:52,558 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) [2021-06-11 09:25:52,558 INFO L185 Difference]: Start difference. First operand has 300 places, 151 transitions, 6074 flow. Second operand 3 states and 896 transitions. [2021-06-11 09:25:52,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 150 transitions, 6074 flow [2021-06-11 09:25:52,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 150 transitions, 672 flow, removed 2701 selfloop flow, removed 0 redundant places. [2021-06-11 09:25:52,643 INFO L241 Difference]: Finished difference. Result has 301 places, 150 transitions, 672 flow [2021-06-11 09:25:52,643 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} [2021-06-11 09:25:52,643 INFO L343 CegarLoopForPetriNet]: 300 programPoint places, 1 predicate places. [2021-06-11 09:25:52,643 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:25:52,643 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 301 places, 150 transitions, 672 flow [2021-06-11 09:25:52,643 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 301 places, 150 transitions, 672 flow [2021-06-11 09:25:52,644 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 301 places, 150 transitions, 672 flow [2021-06-11 09:25:52,661 INFO L129 PetriNetUnfolder]: 0/150 cut-off events. [2021-06-11 09:25:52,661 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:25:52,662 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. [2021-06-11 09:25:52,664 INFO L151 LiptonReduction]: Number of co-enabled transitions 10952 [2021-06-11 09:25:52,672 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:25:52,672 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:25:52,672 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 29 [2021-06-11 09:25:52,672 INFO L480 AbstractCegarLoop]: Abstraction has has 301 places, 150 transitions, 672 flow [2021-06-11 09:25:52,672 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) [2021-06-11 09:25:52,672 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:25:52,672 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] [2021-06-11 09:25:52,672 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2021-06-11 09:25:52,672 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:25:52,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:25:52,673 INFO L82 PathProgramCache]: Analyzing trace with hash -1976601769, now seen corresponding path program 1 times [2021-06-11 09:25:52,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:25:52,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820148137] [2021-06-11 09:25:52,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:25:52,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:25:52,688 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:25:52,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:25:52,690 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:25:52,700 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:25:52,700 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:25:52,700 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2021-06-11 09:25:52,700 WARN L342 ceAbstractionStarter]: 74 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:25:52,700 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 75 thread instances. [2021-06-11 09:25:52,772 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:25:52,772 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 09:25:52,772 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:25:52,772 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:25:52,772 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:25:52,772 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:25:52,772 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:25:52,772 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:25:52,772 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:25:52,772 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:25:52,774 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 381 places, 230 transitions, 6385 flow [2021-06-11 09:25:52,990 INFO L129 PetriNetUnfolder]: 0/455 cut-off events. [2021-06-11 09:25:52,990 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:25:52,990 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. [2021-06-11 09:25:52,991 INFO L82 GeneralOperation]: Start removeDead. Operand has 381 places, 230 transitions, 6385 flow [2021-06-11 09:25:52,993 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 379 places, 228 transitions, 6381 flow [2021-06-11 09:25:52,993 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:25:52,993 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 379 places, 228 transitions, 6381 flow [2021-06-11 09:25:52,993 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 379 places, 228 transitions, 6381 flow [2021-06-11 09:25:52,994 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 379 places, 228 transitions, 6381 flow [2021-06-11 09:25:53,058 INFO L129 PetriNetUnfolder]: 0/303 cut-off events. [2021-06-11 09:25:53,058 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:25:53,059 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. [2021-06-11 09:25:53,082 INFO L151 LiptonReduction]: Number of co-enabled transitions 33900 [2021-06-11 09:26:04,913 INFO L163 LiptonReduction]: Checked pairs total: 14025 [2021-06-11 09:26:04,913 INFO L165 LiptonReduction]: Total number of compositions: 75 [2021-06-11 09:26:04,914 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 11921 [2021-06-11 09:26:04,914 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-06-11 09:26:04,914 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:26:04,914 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:26:04,914 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-06-11 09:26:04,914 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:26:04,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:26:04,915 INFO L82 PathProgramCache]: Analyzing trace with hash 375459, now seen corresponding path program 1 times [2021-06-11 09:26:04,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:26:04,915 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101561567] [2021-06-11 09:26:04,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:26:04,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:26:04,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:26:04,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:26:04,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:26:04,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101561567] [2021-06-11 09:26:04,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:26:04,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 09:26:04,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722335871] [2021-06-11 09:26:04,935 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:26:04,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:26:04,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:26:04,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:26:04,936 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 302 out of 305 [2021-06-11 09:26:04,936 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) [2021-06-11 09:26:04,936 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:26:04,936 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 302 of 305 [2021-06-11 09:26:04,936 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:26:04,981 INFO L129 PetriNetUnfolder]: 0/152 cut-off events. [2021-06-11 09:26:04,981 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:26:04,981 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. [2021-06-11 09:26:04,981 INFO L132 encePairwiseOnDemand]: 303/305 looper letters, 0 selfloop transitions, 1 changer transitions 0/152 dead transitions. [2021-06-11 09:26:04,981 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 152 transitions, 6231 flow [2021-06-11 09:26:04,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:26:04,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:26:04,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 908 transitions. [2021-06-11 09:26:04,982 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9923497267759562 [2021-06-11 09:26:04,982 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 908 transitions. [2021-06-11 09:26:04,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 908 transitions. [2021-06-11 09:26:04,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:26:04,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 908 transitions. [2021-06-11 09:26:04,983 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) [2021-06-11 09:26:04,983 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) [2021-06-11 09:26:04,984 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) [2021-06-11 09:26:04,984 INFO L185 Difference]: Start difference. First operand has 304 places, 153 transitions, 6231 flow. Second operand 3 states and 908 transitions. [2021-06-11 09:26:04,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 152 transitions, 6231 flow [2021-06-11 09:26:05,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 152 transitions, 681 flow, removed 2775 selfloop flow, removed 0 redundant places. [2021-06-11 09:26:05,070 INFO L241 Difference]: Finished difference. Result has 305 places, 152 transitions, 681 flow [2021-06-11 09:26:05,070 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} [2021-06-11 09:26:05,071 INFO L343 CegarLoopForPetriNet]: 304 programPoint places, 1 predicate places. [2021-06-11 09:26:05,071 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:26:05,071 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 305 places, 152 transitions, 681 flow [2021-06-11 09:26:05,071 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 305 places, 152 transitions, 681 flow [2021-06-11 09:26:05,071 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 305 places, 152 transitions, 681 flow [2021-06-11 09:26:05,089 INFO L129 PetriNetUnfolder]: 0/152 cut-off events. [2021-06-11 09:26:05,089 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:26:05,089 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. [2021-06-11 09:26:05,092 INFO L151 LiptonReduction]: Number of co-enabled transitions 11250 [2021-06-11 09:26:05,099 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:26:05,099 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:26:05,100 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 29 [2021-06-11 09:26:05,100 INFO L480 AbstractCegarLoop]: Abstraction has has 305 places, 152 transitions, 681 flow [2021-06-11 09:26:05,100 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) [2021-06-11 09:26:05,100 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:26:05,100 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] [2021-06-11 09:26:05,100 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2021-06-11 09:26:05,100 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:26:05,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:26:05,100 INFO L82 PathProgramCache]: Analyzing trace with hash -1188060048, now seen corresponding path program 1 times [2021-06-11 09:26:05,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:26:05,100 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133674176] [2021-06-11 09:26:05,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:26:05,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:26:05,116 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:26:05,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:26:05,117 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:26:05,128 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:26:05,128 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:26:05,128 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2021-06-11 09:26:05,129 WARN L342 ceAbstractionStarter]: 75 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:26:05,129 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 76 thread instances. [2021-06-11 09:26:05,229 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:26:05,230 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 09:26:05,230 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:26:05,230 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:26:05,230 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:26:05,230 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:26:05,230 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:26:05,230 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:26:05,230 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:26:05,230 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:26:05,232 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 386 places, 233 transitions, 6546 flow [2021-06-11 09:26:05,314 INFO L129 PetriNetUnfolder]: 0/461 cut-off events. [2021-06-11 09:26:05,314 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:26:05,314 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. [2021-06-11 09:26:05,314 INFO L82 GeneralOperation]: Start removeDead. Operand has 386 places, 233 transitions, 6546 flow [2021-06-11 09:26:05,317 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 384 places, 231 transitions, 6542 flow [2021-06-11 09:26:05,317 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:26:05,317 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 384 places, 231 transitions, 6542 flow [2021-06-11 09:26:05,317 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 384 places, 231 transitions, 6542 flow [2021-06-11 09:26:05,319 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 384 places, 231 transitions, 6542 flow [2021-06-11 09:26:05,386 INFO L129 PetriNetUnfolder]: 0/307 cut-off events. [2021-06-11 09:26:05,386 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:26:05,386 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. [2021-06-11 09:26:05,411 INFO L151 LiptonReduction]: Number of co-enabled transitions 34808 [2021-06-11 09:26:18,342 INFO L163 LiptonReduction]: Checked pairs total: 14402 [2021-06-11 09:26:18,342 INFO L165 LiptonReduction]: Total number of compositions: 76 [2021-06-11 09:26:18,342 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 13025 [2021-06-11 09:26:18,343 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-06-11 09:26:18,343 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:26:18,343 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:26:18,343 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-06-11 09:26:18,343 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:26:18,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:26:18,343 INFO L82 PathProgramCache]: Analyzing trace with hash 385315, now seen corresponding path program 1 times [2021-06-11 09:26:18,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:26:18,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614702372] [2021-06-11 09:26:18,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:26:18,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:26:18,358 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:26:18,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:26:18,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:26:18,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614702372] [2021-06-11 09:26:18,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:26:18,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 09:26:18,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266446346] [2021-06-11 09:26:18,363 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:26:18,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:26:18,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:26:18,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:26:18,364 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 309 [2021-06-11 09:26:18,364 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) [2021-06-11 09:26:18,364 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:26:18,364 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 309 [2021-06-11 09:26:18,364 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:26:18,410 INFO L129 PetriNetUnfolder]: 0/154 cut-off events. [2021-06-11 09:26:18,410 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:26:18,410 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. [2021-06-11 09:26:18,410 INFO L132 encePairwiseOnDemand]: 307/309 looper letters, 0 selfloop transitions, 1 changer transitions 0/154 dead transitions. [2021-06-11 09:26:18,410 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 154 transitions, 6390 flow [2021-06-11 09:26:18,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:26:18,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:26:18,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 920 transitions. [2021-06-11 09:26:18,411 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9924487594390508 [2021-06-11 09:26:18,411 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 920 transitions. [2021-06-11 09:26:18,411 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 920 transitions. [2021-06-11 09:26:18,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:26:18,411 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 920 transitions. [2021-06-11 09:26:18,412 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) [2021-06-11 09:26:18,413 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) [2021-06-11 09:26:18,413 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) [2021-06-11 09:26:18,413 INFO L185 Difference]: Start difference. First operand has 308 places, 155 transitions, 6390 flow. Second operand 3 states and 920 transitions. [2021-06-11 09:26:18,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 154 transitions, 6390 flow [2021-06-11 09:26:18,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 154 transitions, 690 flow, removed 2850 selfloop flow, removed 0 redundant places. [2021-06-11 09:26:18,503 INFO L241 Difference]: Finished difference. Result has 309 places, 154 transitions, 690 flow [2021-06-11 09:26:18,503 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} [2021-06-11 09:26:18,503 INFO L343 CegarLoopForPetriNet]: 308 programPoint places, 1 predicate places. [2021-06-11 09:26:18,503 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:26:18,503 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 309 places, 154 transitions, 690 flow [2021-06-11 09:26:18,503 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 309 places, 154 transitions, 690 flow [2021-06-11 09:26:18,504 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 309 places, 154 transitions, 690 flow [2021-06-11 09:26:18,522 INFO L129 PetriNetUnfolder]: 0/154 cut-off events. [2021-06-11 09:26:18,522 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:26:18,522 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. [2021-06-11 09:26:18,525 INFO L151 LiptonReduction]: Number of co-enabled transitions 11552 [2021-06-11 09:26:18,533 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:26:18,533 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:26:18,533 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 30 [2021-06-11 09:26:18,533 INFO L480 AbstractCegarLoop]: Abstraction has has 309 places, 154 transitions, 690 flow [2021-06-11 09:26:18,533 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) [2021-06-11 09:26:18,534 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:26:18,534 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] [2021-06-11 09:26:18,534 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2021-06-11 09:26:18,534 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:26:18,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:26:18,534 INFO L82 PathProgramCache]: Analyzing trace with hash 795407642, now seen corresponding path program 1 times [2021-06-11 09:26:18,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:26:18,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400664317] [2021-06-11 09:26:18,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:26:18,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:26:18,549 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:26:18,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:26:18,551 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:26:18,562 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:26:18,562 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:26:18,562 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2021-06-11 09:26:18,562 WARN L342 ceAbstractionStarter]: 76 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:26:18,562 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 77 thread instances. [2021-06-11 09:26:18,639 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:26:18,639 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 09:26:18,640 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:26:18,640 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:26:18,640 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:26:18,640 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:26:18,640 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:26:18,640 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:26:18,640 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:26:18,640 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:26:18,642 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 391 places, 236 transitions, 6709 flow [2021-06-11 09:26:18,725 INFO L129 PetriNetUnfolder]: 0/467 cut-off events. [2021-06-11 09:26:18,726 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:26:18,726 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. [2021-06-11 09:26:18,726 INFO L82 GeneralOperation]: Start removeDead. Operand has 391 places, 236 transitions, 6709 flow [2021-06-11 09:26:18,728 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 389 places, 234 transitions, 6705 flow [2021-06-11 09:26:18,728 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:26:18,728 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 389 places, 234 transitions, 6705 flow [2021-06-11 09:26:18,728 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 389 places, 234 transitions, 6705 flow [2021-06-11 09:26:18,730 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 389 places, 234 transitions, 6705 flow [2021-06-11 09:26:18,798 INFO L129 PetriNetUnfolder]: 0/311 cut-off events. [2021-06-11 09:26:18,798 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:26:18,798 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. [2021-06-11 09:26:18,824 INFO L151 LiptonReduction]: Number of co-enabled transitions 35728 [2021-06-11 09:26:32,028 INFO L163 LiptonReduction]: Checked pairs total: 14784 [2021-06-11 09:26:32,028 INFO L165 LiptonReduction]: Total number of compositions: 77 [2021-06-11 09:26:32,028 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 13300 [2021-06-11 09:26:32,029 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-06-11 09:26:32,029 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:26:32,029 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:26:32,029 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-06-11 09:26:32,029 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:26:32,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:26:32,029 INFO L82 PathProgramCache]: Analyzing trace with hash 395299, now seen corresponding path program 1 times [2021-06-11 09:26:32,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:26:32,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853582585] [2021-06-11 09:26:32,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:26:32,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:26:32,045 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:26:32,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:26:32,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:26:32,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853582585] [2021-06-11 09:26:32,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:26:32,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 09:26:32,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441255707] [2021-06-11 09:26:32,050 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:26:32,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:26:32,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:26:32,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:26:32,051 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 313 [2021-06-11 09:26:32,051 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) [2021-06-11 09:26:32,051 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:26:32,051 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 313 [2021-06-11 09:26:32,051 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:26:32,097 INFO L129 PetriNetUnfolder]: 0/156 cut-off events. [2021-06-11 09:26:32,098 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:26:32,098 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. [2021-06-11 09:26:32,098 INFO L132 encePairwiseOnDemand]: 311/313 looper letters, 0 selfloop transitions, 1 changer transitions 0/156 dead transitions. [2021-06-11 09:26:32,098 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 156 transitions, 6551 flow [2021-06-11 09:26:32,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:26:32,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:26:32,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 932 transitions. [2021-06-11 09:26:32,099 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9925452609158679 [2021-06-11 09:26:32,099 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 932 transitions. [2021-06-11 09:26:32,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 932 transitions. [2021-06-11 09:26:32,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:26:32,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 932 transitions. [2021-06-11 09:26:32,100 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) [2021-06-11 09:26:32,100 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) [2021-06-11 09:26:32,100 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) [2021-06-11 09:26:32,100 INFO L185 Difference]: Start difference. First operand has 312 places, 157 transitions, 6551 flow. Second operand 3 states and 932 transitions. [2021-06-11 09:26:32,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 156 transitions, 6551 flow [2021-06-11 09:26:32,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 156 transitions, 699 flow, removed 2926 selfloop flow, removed 0 redundant places. [2021-06-11 09:26:32,188 INFO L241 Difference]: Finished difference. Result has 313 places, 156 transitions, 699 flow [2021-06-11 09:26:32,188 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} [2021-06-11 09:26:32,188 INFO L343 CegarLoopForPetriNet]: 312 programPoint places, 1 predicate places. [2021-06-11 09:26:32,188 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:26:32,188 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 313 places, 156 transitions, 699 flow [2021-06-11 09:26:32,189 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 313 places, 156 transitions, 699 flow [2021-06-11 09:26:32,189 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 313 places, 156 transitions, 699 flow [2021-06-11 09:26:32,208 INFO L129 PetriNetUnfolder]: 0/156 cut-off events. [2021-06-11 09:26:32,208 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:26:32,208 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. [2021-06-11 09:26:32,211 INFO L151 LiptonReduction]: Number of co-enabled transitions 11858 [2021-06-11 09:26:32,218 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:26:32,219 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:26:32,219 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 31 [2021-06-11 09:26:32,219 INFO L480 AbstractCegarLoop]: Abstraction has has 313 places, 156 transitions, 699 flow [2021-06-11 09:26:32,219 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) [2021-06-11 09:26:32,219 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:26:32,219 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] [2021-06-11 09:26:32,219 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2021-06-11 09:26:32,219 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:26:32,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:26:32,219 INFO L82 PathProgramCache]: Analyzing trace with hash 2117439739, now seen corresponding path program 1 times [2021-06-11 09:26:32,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:26:32,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990070500] [2021-06-11 09:26:32,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:26:32,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:26:32,235 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:26:32,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:26:32,237 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:26:32,248 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:26:32,248 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:26:32,248 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2021-06-11 09:26:32,248 WARN L342 ceAbstractionStarter]: 77 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:26:32,248 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 78 thread instances. [2021-06-11 09:26:32,328 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:26:32,328 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 09:26:32,328 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:26:32,328 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:26:32,328 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:26:32,329 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:26:32,329 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:26:32,329 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:26:32,329 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:26:32,329 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:26:32,338 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 396 places, 239 transitions, 6874 flow [2021-06-11 09:26:32,424 INFO L129 PetriNetUnfolder]: 0/473 cut-off events. [2021-06-11 09:26:32,424 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:26:32,425 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. [2021-06-11 09:26:32,425 INFO L82 GeneralOperation]: Start removeDead. Operand has 396 places, 239 transitions, 6874 flow [2021-06-11 09:26:32,427 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 394 places, 237 transitions, 6870 flow [2021-06-11 09:26:32,427 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:26:32,427 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 394 places, 237 transitions, 6870 flow [2021-06-11 09:26:32,427 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 394 places, 237 transitions, 6870 flow [2021-06-11 09:26:32,429 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 394 places, 237 transitions, 6870 flow [2021-06-11 09:26:32,499 INFO L129 PetriNetUnfolder]: 0/315 cut-off events. [2021-06-11 09:26:32,500 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:26:32,500 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. [2021-06-11 09:26:32,768 INFO L151 LiptonReduction]: Number of co-enabled transitions 36660 [2021-06-11 09:26:47,436 INFO L163 LiptonReduction]: Checked pairs total: 15171 [2021-06-11 09:26:47,437 INFO L165 LiptonReduction]: Total number of compositions: 78 [2021-06-11 09:26:47,437 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 15010 [2021-06-11 09:26:47,437 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-06-11 09:26:47,437 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:26:47,438 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:26:47,438 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-06-11 09:26:47,438 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:26:47,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:26:47,438 INFO L82 PathProgramCache]: Analyzing trace with hash 405411, now seen corresponding path program 1 times [2021-06-11 09:26:47,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:26:47,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184776359] [2021-06-11 09:26:47,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:26:47,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:26:47,456 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:26:47,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:26:47,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:26:47,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184776359] [2021-06-11 09:26:47,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:26:47,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 09:26:47,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207954090] [2021-06-11 09:26:47,461 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:26:47,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:26:47,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:26:47,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:26:47,462 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 317 [2021-06-11 09:26:47,462 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) [2021-06-11 09:26:47,462 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:26:47,462 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 317 [2021-06-11 09:26:47,462 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:26:47,510 INFO L129 PetriNetUnfolder]: 0/158 cut-off events. [2021-06-11 09:26:47,510 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:26:47,510 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. [2021-06-11 09:26:47,511 INFO L132 encePairwiseOnDemand]: 315/317 looper letters, 0 selfloop transitions, 1 changer transitions 0/158 dead transitions. [2021-06-11 09:26:47,511 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 158 transitions, 6714 flow [2021-06-11 09:26:47,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:26:47,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:26:47,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 944 transitions. [2021-06-11 09:26:47,511 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9926393270241851 [2021-06-11 09:26:47,511 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 944 transitions. [2021-06-11 09:26:47,511 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 944 transitions. [2021-06-11 09:26:47,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:26:47,512 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 944 transitions. [2021-06-11 09:26:47,512 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) [2021-06-11 09:26:47,513 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) [2021-06-11 09:26:47,513 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) [2021-06-11 09:26:47,513 INFO L185 Difference]: Start difference. First operand has 316 places, 159 transitions, 6714 flow. Second operand 3 states and 944 transitions. [2021-06-11 09:26:47,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 158 transitions, 6714 flow [2021-06-11 09:26:47,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 158 transitions, 708 flow, removed 3003 selfloop flow, removed 0 redundant places. [2021-06-11 09:26:47,611 INFO L241 Difference]: Finished difference. Result has 317 places, 158 transitions, 708 flow [2021-06-11 09:26:47,612 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} [2021-06-11 09:26:47,612 INFO L343 CegarLoopForPetriNet]: 316 programPoint places, 1 predicate places. [2021-06-11 09:26:47,612 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:26:47,612 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 317 places, 158 transitions, 708 flow [2021-06-11 09:26:47,612 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 317 places, 158 transitions, 708 flow [2021-06-11 09:26:47,612 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 317 places, 158 transitions, 708 flow [2021-06-11 09:26:47,631 INFO L129 PetriNetUnfolder]: 0/158 cut-off events. [2021-06-11 09:26:47,631 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:26:47,631 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. [2021-06-11 09:26:47,635 INFO L151 LiptonReduction]: Number of co-enabled transitions 12168 [2021-06-11 09:26:47,642 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:26:47,642 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:26:47,642 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 30 [2021-06-11 09:26:47,643 INFO L480 AbstractCegarLoop]: Abstraction has has 317 places, 158 transitions, 708 flow [2021-06-11 09:26:47,643 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) [2021-06-11 09:26:47,643 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:26:47,643 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] [2021-06-11 09:26:47,643 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2021-06-11 09:26:47,643 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:26:47,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:26:47,643 INFO L82 PathProgramCache]: Analyzing trace with hash 1047065309, now seen corresponding path program 1 times [2021-06-11 09:26:47,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:26:47,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427036928] [2021-06-11 09:26:47,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:26:47,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:26:47,660 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:26:47,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:26:47,662 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:26:47,674 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:26:47,674 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:26:47,674 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2021-06-11 09:26:47,674 WARN L342 ceAbstractionStarter]: 78 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:26:47,674 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 79 thread instances. [2021-06-11 09:26:47,757 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:26:47,758 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 09:26:47,758 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:26:47,758 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:26:47,758 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:26:47,758 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:26:47,758 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:26:47,758 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:26:47,758 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:26:47,758 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:26:47,760 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 401 places, 242 transitions, 7041 flow [2021-06-11 09:26:47,848 INFO L129 PetriNetUnfolder]: 0/479 cut-off events. [2021-06-11 09:26:47,848 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:26:47,848 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. [2021-06-11 09:26:47,848 INFO L82 GeneralOperation]: Start removeDead. Operand has 401 places, 242 transitions, 7041 flow [2021-06-11 09:26:47,851 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 399 places, 240 transitions, 7037 flow [2021-06-11 09:26:47,851 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:26:47,851 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 399 places, 240 transitions, 7037 flow [2021-06-11 09:26:47,851 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 399 places, 240 transitions, 7037 flow [2021-06-11 09:26:47,853 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 399 places, 240 transitions, 7037 flow [2021-06-11 09:26:47,924 INFO L129 PetriNetUnfolder]: 0/319 cut-off events. [2021-06-11 09:26:47,924 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:26:47,924 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. [2021-06-11 09:26:47,951 INFO L151 LiptonReduction]: Number of co-enabled transitions 37604 [2021-06-11 09:27:03,974 INFO L163 LiptonReduction]: Checked pairs total: 15563 [2021-06-11 09:27:03,974 INFO L165 LiptonReduction]: Total number of compositions: 79 [2021-06-11 09:27:03,975 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 16124 [2021-06-11 09:27:03,975 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-06-11 09:27:03,975 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:27:03,975 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:27:03,975 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-06-11 09:27:03,975 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:27:03,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:27:03,976 INFO L82 PathProgramCache]: Analyzing trace with hash 415651, now seen corresponding path program 1 times [2021-06-11 09:27:03,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:27:03,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299273687] [2021-06-11 09:27:03,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:27:03,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:27:04,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:27:04,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:27:04,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:27:04,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299273687] [2021-06-11 09:27:04,010 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:27:04,010 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 09:27:04,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232209571] [2021-06-11 09:27:04,010 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:27:04,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:27:04,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:27:04,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:27:04,011 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 318 out of 321 [2021-06-11 09:27:04,011 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) [2021-06-11 09:27:04,011 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:27:04,011 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 318 of 321 [2021-06-11 09:27:04,011 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:27:04,061 INFO L129 PetriNetUnfolder]: 0/160 cut-off events. [2021-06-11 09:27:04,061 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:27:04,061 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. [2021-06-11 09:27:04,062 INFO L132 encePairwiseOnDemand]: 319/321 looper letters, 0 selfloop transitions, 1 changer transitions 0/160 dead transitions. [2021-06-11 09:27:04,062 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 160 transitions, 6879 flow [2021-06-11 09:27:04,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:27:04,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:27:04,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 956 transitions. [2021-06-11 09:27:04,062 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9927310488058152 [2021-06-11 09:27:04,062 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 956 transitions. [2021-06-11 09:27:04,062 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 956 transitions. [2021-06-11 09:27:04,063 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:27:04,063 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 956 transitions. [2021-06-11 09:27:04,063 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) [2021-06-11 09:27:04,064 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) [2021-06-11 09:27:04,064 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) [2021-06-11 09:27:04,064 INFO L185 Difference]: Start difference. First operand has 320 places, 161 transitions, 6879 flow. Second operand 3 states and 956 transitions. [2021-06-11 09:27:04,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 160 transitions, 6879 flow [2021-06-11 09:27:04,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 160 transitions, 717 flow, removed 3081 selfloop flow, removed 0 redundant places. [2021-06-11 09:27:04,167 INFO L241 Difference]: Finished difference. Result has 321 places, 160 transitions, 717 flow [2021-06-11 09:27:04,168 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} [2021-06-11 09:27:04,168 INFO L343 CegarLoopForPetriNet]: 320 programPoint places, 1 predicate places. [2021-06-11 09:27:04,168 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:27:04,168 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 321 places, 160 transitions, 717 flow [2021-06-11 09:27:04,168 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 321 places, 160 transitions, 717 flow [2021-06-11 09:27:04,168 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 321 places, 160 transitions, 717 flow [2021-06-11 09:27:04,188 INFO L129 PetriNetUnfolder]: 0/160 cut-off events. [2021-06-11 09:27:04,188 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:27:04,188 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. [2021-06-11 09:27:04,191 INFO L151 LiptonReduction]: Number of co-enabled transitions 12482 [2021-06-11 09:27:04,199 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:27:04,199 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:27:04,199 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 31 [2021-06-11 09:27:04,200 INFO L480 AbstractCegarLoop]: Abstraction has has 321 places, 160 transitions, 717 flow [2021-06-11 09:27:04,200 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) [2021-06-11 09:27:04,200 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:27:04,200 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] [2021-06-11 09:27:04,200 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2021-06-11 09:27:04,200 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:27:04,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:27:04,200 INFO L82 PathProgramCache]: Analyzing trace with hash 2125115286, now seen corresponding path program 1 times [2021-06-11 09:27:04,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:27:04,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977896487] [2021-06-11 09:27:04,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:27:04,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:27:04,219 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:27:04,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:27:04,220 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:27:04,232 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:27:04,232 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:27:04,233 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2021-06-11 09:27:04,233 WARN L342 ceAbstractionStarter]: 79 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:27:04,233 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 80 thread instances. [2021-06-11 09:27:04,330 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:27:04,330 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 09:27:04,330 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:27:04,331 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:27:04,331 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:27:04,331 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:27:04,331 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:27:04,331 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:27:04,331 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:27:04,331 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:27:04,332 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 406 places, 245 transitions, 7210 flow [2021-06-11 09:27:04,427 INFO L129 PetriNetUnfolder]: 0/485 cut-off events. [2021-06-11 09:27:04,427 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:27:04,427 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. [2021-06-11 09:27:04,427 INFO L82 GeneralOperation]: Start removeDead. Operand has 406 places, 245 transitions, 7210 flow [2021-06-11 09:27:04,429 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 404 places, 243 transitions, 7206 flow [2021-06-11 09:27:04,430 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:27:04,430 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 404 places, 243 transitions, 7206 flow [2021-06-11 09:27:04,430 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 404 places, 243 transitions, 7206 flow [2021-06-11 09:27:04,431 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 404 places, 243 transitions, 7206 flow [2021-06-11 09:27:04,507 INFO L129 PetriNetUnfolder]: 0/323 cut-off events. [2021-06-11 09:27:04,507 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:27:04,507 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. [2021-06-11 09:27:04,535 INFO L151 LiptonReduction]: Number of co-enabled transitions 38560 [2021-06-11 09:27:21,847 INFO L163 LiptonReduction]: Checked pairs total: 15960 [2021-06-11 09:27:21,848 INFO L165 LiptonReduction]: Total number of compositions: 80 [2021-06-11 09:27:21,848 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 17418 [2021-06-11 09:27:21,849 INFO L129 PetriNetUnfolder]: 0/1 cut-off events. [2021-06-11 09:27:21,849 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:27:21,849 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:27:21,849 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-06-11 09:27:21,849 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:27:21,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:27:21,849 INFO L82 PathProgramCache]: Analyzing trace with hash 426019, now seen corresponding path program 1 times [2021-06-11 09:27:21,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:27:21,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157554666] [2021-06-11 09:27:21,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:27:21,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:27:21,873 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:27:21,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:27:21,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:27:21,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157554666] [2021-06-11 09:27:21,880 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:27:21,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 09:27:21,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728208995] [2021-06-11 09:27:21,880 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:27:21,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:27:21,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:27:21,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:27:21,881 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 325 [2021-06-11 09:27:21,881 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) [2021-06-11 09:27:21,882 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:27:21,882 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 325 [2021-06-11 09:27:21,882 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:27:21,934 INFO L129 PetriNetUnfolder]: 0/162 cut-off events. [2021-06-11 09:27:21,934 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:27:21,934 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. [2021-06-11 09:27:21,935 INFO L132 encePairwiseOnDemand]: 323/325 looper letters, 0 selfloop transitions, 1 changer transitions 0/162 dead transitions. [2021-06-11 09:27:21,935 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 162 transitions, 7046 flow [2021-06-11 09:27:21,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:27:21,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:27:21,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 968 transitions. [2021-06-11 09:27:21,936 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9928205128205129 [2021-06-11 09:27:21,936 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 968 transitions. [2021-06-11 09:27:21,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 968 transitions. [2021-06-11 09:27:21,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:27:21,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 968 transitions. [2021-06-11 09:27:21,936 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) [2021-06-11 09:27:21,937 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) [2021-06-11 09:27:21,937 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) [2021-06-11 09:27:21,937 INFO L185 Difference]: Start difference. First operand has 324 places, 163 transitions, 7046 flow. Second operand 3 states and 968 transitions. [2021-06-11 09:27:21,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 162 transitions, 7046 flow [2021-06-11 09:27:22,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 162 transitions, 726 flow, removed 3160 selfloop flow, removed 0 redundant places. [2021-06-11 09:27:22,050 INFO L241 Difference]: Finished difference. Result has 325 places, 162 transitions, 726 flow [2021-06-11 09:27:22,050 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} [2021-06-11 09:27:22,050 INFO L343 CegarLoopForPetriNet]: 324 programPoint places, 1 predicate places. [2021-06-11 09:27:22,050 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:27:22,050 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 325 places, 162 transitions, 726 flow [2021-06-11 09:27:22,050 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 325 places, 162 transitions, 726 flow [2021-06-11 09:27:22,050 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 325 places, 162 transitions, 726 flow [2021-06-11 09:27:22,070 INFO L129 PetriNetUnfolder]: 0/162 cut-off events. [2021-06-11 09:27:22,070 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:27:22,071 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. [2021-06-11 09:27:22,074 INFO L151 LiptonReduction]: Number of co-enabled transitions 12800 [2021-06-11 09:27:22,082 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:27:22,082 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:27:22,082 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 32 [2021-06-11 09:27:22,083 INFO L480 AbstractCegarLoop]: Abstraction has has 325 places, 162 transitions, 726 flow [2021-06-11 09:27:22,083 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) [2021-06-11 09:27:22,083 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:27:22,083 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] [2021-06-11 09:27:22,083 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2021-06-11 09:27:22,083 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:27:22,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:27:22,083 INFO L82 PathProgramCache]: Analyzing trace with hash 1215918752, now seen corresponding path program 1 times [2021-06-11 09:27:22,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:27:22,083 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179635900] [2021-06-11 09:27:22,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:27:22,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:27:22,101 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:27:22,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:27:22,103 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:27:22,115 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:27:22,116 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:27:22,116 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2021-06-11 09:27:22,116 WARN L342 ceAbstractionStarter]: 80 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:27:22,116 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 81 thread instances. [2021-06-11 09:27:22,208 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:27:22,208 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 09:27:22,209 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:27:22,209 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:27:22,209 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:27:22,209 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:27:22,209 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:27:22,209 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:27:22,209 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:27:22,209 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:27:22,210 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 411 places, 248 transitions, 7381 flow [2021-06-11 09:27:22,303 INFO L129 PetriNetUnfolder]: 0/491 cut-off events. [2021-06-11 09:27:22,303 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:27:22,303 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. [2021-06-11 09:27:22,303 INFO L82 GeneralOperation]: Start removeDead. Operand has 411 places, 248 transitions, 7381 flow [2021-06-11 09:27:22,305 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 409 places, 246 transitions, 7377 flow [2021-06-11 09:27:22,306 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:27:22,306 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 409 places, 246 transitions, 7377 flow [2021-06-11 09:27:22,306 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 409 places, 246 transitions, 7377 flow [2021-06-11 09:27:22,307 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 409 places, 246 transitions, 7377 flow [2021-06-11 09:27:22,383 INFO L129 PetriNetUnfolder]: 0/327 cut-off events. [2021-06-11 09:27:22,383 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:27:22,383 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. [2021-06-11 09:27:22,412 INFO L151 LiptonReduction]: Number of co-enabled transitions 39528 [2021-06-11 09:27:40,186 INFO L163 LiptonReduction]: Checked pairs total: 16362 [2021-06-11 09:27:40,186 INFO L165 LiptonReduction]: Total number of compositions: 81 [2021-06-11 09:27:40,186 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 17880 [2021-06-11 09:27:40,188 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-06-11 09:27:40,188 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:27:40,188 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:27:40,188 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-06-11 09:27:40,188 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:27:40,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:27:40,188 INFO L82 PathProgramCache]: Analyzing trace with hash 436515, now seen corresponding path program 1 times [2021-06-11 09:27:40,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:27:40,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424859916] [2021-06-11 09:27:40,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:27:40,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:27:40,208 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:27:40,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:27:40,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:27:40,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424859916] [2021-06-11 09:27:40,214 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:27:40,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 09:27:40,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334610634] [2021-06-11 09:27:40,214 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:27:40,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:27:40,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:27:40,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:27:40,215 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 326 out of 329 [2021-06-11 09:27:40,215 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) [2021-06-11 09:27:40,215 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:27:40,215 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 326 of 329 [2021-06-11 09:27:40,215 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:27:40,267 INFO L129 PetriNetUnfolder]: 0/164 cut-off events. [2021-06-11 09:27:40,267 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:27:40,268 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. [2021-06-11 09:27:40,268 INFO L132 encePairwiseOnDemand]: 327/329 looper letters, 0 selfloop transitions, 1 changer transitions 0/164 dead transitions. [2021-06-11 09:27:40,268 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 164 transitions, 7215 flow [2021-06-11 09:27:40,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:27:40,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:27:40,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 980 transitions. [2021-06-11 09:27:40,269 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9929078014184397 [2021-06-11 09:27:40,269 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 980 transitions. [2021-06-11 09:27:40,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 980 transitions. [2021-06-11 09:27:40,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:27:40,269 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 980 transitions. [2021-06-11 09:27:40,270 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) [2021-06-11 09:27:40,270 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) [2021-06-11 09:27:40,270 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) [2021-06-11 09:27:40,270 INFO L185 Difference]: Start difference. First operand has 328 places, 165 transitions, 7215 flow. Second operand 3 states and 980 transitions. [2021-06-11 09:27:40,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 164 transitions, 7215 flow [2021-06-11 09:27:40,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 164 transitions, 735 flow, removed 3240 selfloop flow, removed 0 redundant places. [2021-06-11 09:27:40,386 INFO L241 Difference]: Finished difference. Result has 329 places, 164 transitions, 735 flow [2021-06-11 09:27:40,386 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} [2021-06-11 09:27:40,386 INFO L343 CegarLoopForPetriNet]: 328 programPoint places, 1 predicate places. [2021-06-11 09:27:40,386 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:27:40,386 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 329 places, 164 transitions, 735 flow [2021-06-11 09:27:40,386 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 329 places, 164 transitions, 735 flow [2021-06-11 09:27:40,387 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 329 places, 164 transitions, 735 flow [2021-06-11 09:27:40,407 INFO L129 PetriNetUnfolder]: 0/164 cut-off events. [2021-06-11 09:27:40,407 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:27:40,407 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. [2021-06-11 09:27:40,410 INFO L151 LiptonReduction]: Number of co-enabled transitions 13122 [2021-06-11 09:27:40,419 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:27:40,419 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:27:40,419 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 33 [2021-06-11 09:27:40,419 INFO L480 AbstractCegarLoop]: Abstraction has has 329 places, 164 transitions, 735 flow [2021-06-11 09:27:40,419 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) [2021-06-11 09:27:40,419 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:27:40,420 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] [2021-06-11 09:27:40,420 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2021-06-11 09:27:40,420 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:27:40,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:27:40,420 INFO L82 PathProgramCache]: Analyzing trace with hash -1883866559, now seen corresponding path program 1 times [2021-06-11 09:27:40,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:27:40,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992942954] [2021-06-11 09:27:40,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:27:40,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:27:40,439 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:27:40,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:27:40,440 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:27:40,453 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:27:40,453 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:27:40,453 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2021-06-11 09:27:40,453 WARN L342 ceAbstractionStarter]: 81 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:27:40,453 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 82 thread instances. [2021-06-11 09:27:40,556 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:27:40,556 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 09:27:40,556 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:27:40,556 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:27:40,556 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:27:40,556 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:27:40,556 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:27:40,556 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:27:40,556 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:27:40,556 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:27:40,558 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 416 places, 251 transitions, 7554 flow [2021-06-11 09:27:40,656 INFO L129 PetriNetUnfolder]: 0/497 cut-off events. [2021-06-11 09:27:40,656 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:27:40,656 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. [2021-06-11 09:27:40,656 INFO L82 GeneralOperation]: Start removeDead. Operand has 416 places, 251 transitions, 7554 flow [2021-06-11 09:27:40,659 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 414 places, 249 transitions, 7550 flow [2021-06-11 09:27:40,659 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:27:40,659 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 414 places, 249 transitions, 7550 flow [2021-06-11 09:27:40,659 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 414 places, 249 transitions, 7550 flow [2021-06-11 09:27:40,661 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 414 places, 249 transitions, 7550 flow [2021-06-11 09:27:40,738 INFO L129 PetriNetUnfolder]: 0/331 cut-off events. [2021-06-11 09:27:40,738 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:27:40,738 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. [2021-06-11 09:27:40,768 INFO L151 LiptonReduction]: Number of co-enabled transitions 40508 [2021-06-11 09:27:58,757 INFO L163 LiptonReduction]: Checked pairs total: 16769 [2021-06-11 09:27:58,757 INFO L165 LiptonReduction]: Total number of compositions: 82 [2021-06-11 09:27:58,757 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 18098 [2021-06-11 09:27:58,758 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-06-11 09:27:58,758 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:27:58,758 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:27:58,758 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-06-11 09:27:58,758 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:27:58,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:27:58,758 INFO L82 PathProgramCache]: Analyzing trace with hash 447139, now seen corresponding path program 1 times [2021-06-11 09:27:58,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:27:58,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842039408] [2021-06-11 09:27:58,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:27:58,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:27:58,777 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:27:58,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:27:58,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:27:58,783 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842039408] [2021-06-11 09:27:58,783 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:27:58,783 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 09:27:58,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705518982] [2021-06-11 09:27:58,783 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:27:58,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:27:58,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:27:58,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:27:58,784 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 330 out of 333 [2021-06-11 09:27:58,784 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) [2021-06-11 09:27:58,784 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:27:58,784 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 330 of 333 [2021-06-11 09:27:58,784 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:27:58,839 INFO L129 PetriNetUnfolder]: 0/166 cut-off events. [2021-06-11 09:27:58,839 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:27:58,839 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. [2021-06-11 09:27:58,840 INFO L132 encePairwiseOnDemand]: 331/333 looper letters, 0 selfloop transitions, 1 changer transitions 0/166 dead transitions. [2021-06-11 09:27:58,840 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 166 transitions, 7386 flow [2021-06-11 09:27:58,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:27:58,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:27:58,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 992 transitions. [2021-06-11 09:27:58,840 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.992992992992993 [2021-06-11 09:27:58,840 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 992 transitions. [2021-06-11 09:27:58,840 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 992 transitions. [2021-06-11 09:27:58,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:27:58,841 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 992 transitions. [2021-06-11 09:27:58,841 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) [2021-06-11 09:27:58,842 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) [2021-06-11 09:27:58,842 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) [2021-06-11 09:27:58,842 INFO L185 Difference]: Start difference. First operand has 332 places, 167 transitions, 7386 flow. Second operand 3 states and 992 transitions. [2021-06-11 09:27:58,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 166 transitions, 7386 flow [2021-06-11 09:27:58,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 166 transitions, 744 flow, removed 3321 selfloop flow, removed 0 redundant places. [2021-06-11 09:27:58,967 INFO L241 Difference]: Finished difference. Result has 333 places, 166 transitions, 744 flow [2021-06-11 09:27:58,968 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} [2021-06-11 09:27:58,968 INFO L343 CegarLoopForPetriNet]: 332 programPoint places, 1 predicate places. [2021-06-11 09:27:58,968 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:27:58,968 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 333 places, 166 transitions, 744 flow [2021-06-11 09:27:58,968 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 333 places, 166 transitions, 744 flow [2021-06-11 09:27:58,968 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 333 places, 166 transitions, 744 flow [2021-06-11 09:27:58,989 INFO L129 PetriNetUnfolder]: 0/166 cut-off events. [2021-06-11 09:27:58,990 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:27:58,990 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. [2021-06-11 09:27:58,993 INFO L151 LiptonReduction]: Number of co-enabled transitions 13448 [2021-06-11 09:27:59,002 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:27:59,002 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:27:59,003 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 35 [2021-06-11 09:27:59,003 INFO L480 AbstractCegarLoop]: Abstraction has has 333 places, 166 transitions, 744 flow [2021-06-11 09:27:59,003 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) [2021-06-11 09:27:59,003 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:27:59,003 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] [2021-06-11 09:27:59,003 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2021-06-11 09:27:59,003 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:27:59,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:27:59,003 INFO L82 PathProgramCache]: Analyzing trace with hash 1599175267, now seen corresponding path program 1 times [2021-06-11 09:27:59,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:27:59,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193103781] [2021-06-11 09:27:59,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:27:59,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:27:59,023 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:27:59,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:27:59,025 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:27:59,038 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:27:59,038 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:27:59,039 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2021-06-11 09:27:59,039 WARN L342 ceAbstractionStarter]: 82 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:27:59,039 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 83 thread instances. [2021-06-11 09:27:59,142 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:27:59,142 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 09:27:59,143 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:27:59,143 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:27:59,143 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:27:59,143 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:27:59,143 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:27:59,143 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:27:59,143 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:27:59,143 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:27:59,145 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 421 places, 254 transitions, 7729 flow [2021-06-11 09:27:59,243 INFO L129 PetriNetUnfolder]: 0/503 cut-off events. [2021-06-11 09:27:59,244 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:27:59,244 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. [2021-06-11 09:27:59,244 INFO L82 GeneralOperation]: Start removeDead. Operand has 421 places, 254 transitions, 7729 flow [2021-06-11 09:27:59,246 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 419 places, 252 transitions, 7725 flow [2021-06-11 09:27:59,246 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:27:59,246 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 419 places, 252 transitions, 7725 flow [2021-06-11 09:27:59,246 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 419 places, 252 transitions, 7725 flow [2021-06-11 09:27:59,248 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 419 places, 252 transitions, 7725 flow [2021-06-11 09:27:59,328 INFO L129 PetriNetUnfolder]: 0/335 cut-off events. [2021-06-11 09:27:59,328 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:27:59,328 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. [2021-06-11 09:27:59,359 INFO L151 LiptonReduction]: Number of co-enabled transitions 41500 [2021-06-11 09:28:18,651 INFO L163 LiptonReduction]: Checked pairs total: 17181 [2021-06-11 09:28:18,651 INFO L165 LiptonReduction]: Total number of compositions: 83 [2021-06-11 09:28:18,652 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 19406 [2021-06-11 09:28:18,652 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-06-11 09:28:18,652 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:28:18,652 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:28:18,652 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-06-11 09:28:18,652 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:28:18,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:28:18,653 INFO L82 PathProgramCache]: Analyzing trace with hash 457891, now seen corresponding path program 1 times [2021-06-11 09:28:18,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:28:18,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786252629] [2021-06-11 09:28:18,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:28:18,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:28:18,674 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:28:18,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:28:18,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:28:18,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786252629] [2021-06-11 09:28:18,680 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:28:18,680 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 09:28:18,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99864945] [2021-06-11 09:28:18,680 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:28:18,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:28:18,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:28:18,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:28:18,681 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 334 out of 337 [2021-06-11 09:28:18,682 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) [2021-06-11 09:28:18,682 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:28:18,682 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 334 of 337 [2021-06-11 09:28:18,682 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:28:18,738 INFO L129 PetriNetUnfolder]: 0/168 cut-off events. [2021-06-11 09:28:18,738 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:28:18,738 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. [2021-06-11 09:28:18,739 INFO L132 encePairwiseOnDemand]: 335/337 looper letters, 0 selfloop transitions, 1 changer transitions 0/168 dead transitions. [2021-06-11 09:28:18,739 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 168 transitions, 7559 flow [2021-06-11 09:28:18,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:28:18,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:28:18,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1004 transitions. [2021-06-11 09:28:18,740 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9930761622156281 [2021-06-11 09:28:18,740 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1004 transitions. [2021-06-11 09:28:18,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1004 transitions. [2021-06-11 09:28:18,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:28:18,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1004 transitions. [2021-06-11 09:28:18,741 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) [2021-06-11 09:28:18,741 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) [2021-06-11 09:28:18,741 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) [2021-06-11 09:28:18,741 INFO L185 Difference]: Start difference. First operand has 336 places, 169 transitions, 7559 flow. Second operand 3 states and 1004 transitions. [2021-06-11 09:28:18,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 168 transitions, 7559 flow [2021-06-11 09:28:18,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 168 transitions, 753 flow, removed 3403 selfloop flow, removed 0 redundant places. [2021-06-11 09:28:18,878 INFO L241 Difference]: Finished difference. Result has 337 places, 168 transitions, 753 flow [2021-06-11 09:28:18,878 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} [2021-06-11 09:28:18,878 INFO L343 CegarLoopForPetriNet]: 336 programPoint places, 1 predicate places. [2021-06-11 09:28:18,878 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:28:18,878 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 337 places, 168 transitions, 753 flow [2021-06-11 09:28:18,879 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 337 places, 168 transitions, 753 flow [2021-06-11 09:28:18,879 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 337 places, 168 transitions, 753 flow [2021-06-11 09:28:18,901 INFO L129 PetriNetUnfolder]: 0/168 cut-off events. [2021-06-11 09:28:18,901 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:28:18,901 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. [2021-06-11 09:28:18,905 INFO L151 LiptonReduction]: Number of co-enabled transitions 13778 [2021-06-11 09:28:18,914 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:28:18,914 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:28:18,914 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 36 [2021-06-11 09:28:18,914 INFO L480 AbstractCegarLoop]: Abstraction has has 337 places, 168 transitions, 753 flow [2021-06-11 09:28:18,914 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) [2021-06-11 09:28:18,915 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:28:18,915 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] [2021-06-11 09:28:18,915 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2021-06-11 09:28:18,915 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:28:18,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:28:18,915 INFO L82 PathProgramCache]: Analyzing trace with hash 443771644, now seen corresponding path program 1 times [2021-06-11 09:28:18,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:28:18,915 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692137524] [2021-06-11 09:28:18,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:28:18,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:28:18,935 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:28:18,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:28:18,937 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:28:18,950 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:28:18,950 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:28:18,950 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2021-06-11 09:28:18,950 WARN L342 ceAbstractionStarter]: 83 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:28:18,951 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 84 thread instances. [2021-06-11 09:28:19,051 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:28:19,052 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 09:28:19,052 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:28:19,052 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:28:19,052 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:28:19,052 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:28:19,052 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:28:19,052 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:28:19,052 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:28:19,052 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:28:19,054 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 426 places, 257 transitions, 7906 flow [2021-06-11 09:28:19,154 INFO L129 PetriNetUnfolder]: 0/509 cut-off events. [2021-06-11 09:28:19,154 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:28:19,154 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. [2021-06-11 09:28:19,154 INFO L82 GeneralOperation]: Start removeDead. Operand has 426 places, 257 transitions, 7906 flow [2021-06-11 09:28:19,157 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 424 places, 255 transitions, 7902 flow [2021-06-11 09:28:19,157 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:28:19,157 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 424 places, 255 transitions, 7902 flow [2021-06-11 09:28:19,157 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 424 places, 255 transitions, 7902 flow [2021-06-11 09:28:19,159 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 424 places, 255 transitions, 7902 flow [2021-06-11 09:28:19,239 INFO L129 PetriNetUnfolder]: 0/339 cut-off events. [2021-06-11 09:28:19,239 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:28:19,239 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. [2021-06-11 09:28:19,271 INFO L151 LiptonReduction]: Number of co-enabled transitions 42504 [2021-06-11 09:28:40,620 INFO L163 LiptonReduction]: Checked pairs total: 17598 [2021-06-11 09:28:40,621 INFO L165 LiptonReduction]: Total number of compositions: 84 [2021-06-11 09:28:40,621 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 21464 [2021-06-11 09:28:40,622 INFO L129 PetriNetUnfolder]: 0/1 cut-off events. [2021-06-11 09:28:40,622 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:28:40,622 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:28:40,622 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-06-11 09:28:40,622 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:28:40,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:28:40,622 INFO L82 PathProgramCache]: Analyzing trace with hash 468771, now seen corresponding path program 1 times [2021-06-11 09:28:40,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:28:40,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13949609] [2021-06-11 09:28:40,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:28:40,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:28:40,641 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:28:40,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:28:40,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:28:40,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13949609] [2021-06-11 09:28:40,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:28:40,647 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 09:28:40,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454579506] [2021-06-11 09:28:40,648 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:28:40,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:28:40,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:28:40,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:28:40,648 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 338 out of 341 [2021-06-11 09:28:40,649 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) [2021-06-11 09:28:40,649 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:28:40,649 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 338 of 341 [2021-06-11 09:28:40,649 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:28:40,704 INFO L129 PetriNetUnfolder]: 0/170 cut-off events. [2021-06-11 09:28:40,704 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:28:40,705 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. [2021-06-11 09:28:40,705 INFO L132 encePairwiseOnDemand]: 339/341 looper letters, 0 selfloop transitions, 1 changer transitions 0/170 dead transitions. [2021-06-11 09:28:40,705 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 170 transitions, 7734 flow [2021-06-11 09:28:40,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:28:40,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:28:40,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1016 transitions. [2021-06-11 09:28:40,706 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9931573802541545 [2021-06-11 09:28:40,706 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1016 transitions. [2021-06-11 09:28:40,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1016 transitions. [2021-06-11 09:28:40,706 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:28:40,706 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1016 transitions. [2021-06-11 09:28:40,707 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) [2021-06-11 09:28:40,707 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) [2021-06-11 09:28:40,707 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) [2021-06-11 09:28:40,707 INFO L185 Difference]: Start difference. First operand has 340 places, 171 transitions, 7734 flow. Second operand 3 states and 1016 transitions. [2021-06-11 09:28:40,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 170 transitions, 7734 flow [2021-06-11 09:28:40,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 170 transitions, 762 flow, removed 3486 selfloop flow, removed 0 redundant places. [2021-06-11 09:28:40,862 INFO L241 Difference]: Finished difference. Result has 341 places, 170 transitions, 762 flow [2021-06-11 09:28:40,862 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} [2021-06-11 09:28:40,862 INFO L343 CegarLoopForPetriNet]: 340 programPoint places, 1 predicate places. [2021-06-11 09:28:40,862 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:28:40,862 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 341 places, 170 transitions, 762 flow [2021-06-11 09:28:40,862 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 341 places, 170 transitions, 762 flow [2021-06-11 09:28:40,863 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 341 places, 170 transitions, 762 flow [2021-06-11 09:28:40,885 INFO L129 PetriNetUnfolder]: 0/170 cut-off events. [2021-06-11 09:28:40,885 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:28:40,885 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. [2021-06-11 09:28:40,889 INFO L151 LiptonReduction]: Number of co-enabled transitions 14112 [2021-06-11 09:28:40,898 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:28:40,898 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:28:40,898 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 36 [2021-06-11 09:28:40,898 INFO L480 AbstractCegarLoop]: Abstraction has has 341 places, 170 transitions, 762 flow [2021-06-11 09:28:40,898 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) [2021-06-11 09:28:40,898 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:28:40,898 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] [2021-06-11 09:28:40,898 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2021-06-11 09:28:40,898 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:28:40,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:28:40,899 INFO L82 PathProgramCache]: Analyzing trace with hash 777326630, now seen corresponding path program 1 times [2021-06-11 09:28:40,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:28:40,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070178173] [2021-06-11 09:28:40,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:28:40,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:28:40,917 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:28:40,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:28:40,919 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:28:40,933 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:28:40,933 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:28:40,933 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2021-06-11 09:28:40,933 WARN L342 ceAbstractionStarter]: 84 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:28:40,933 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 85 thread instances. [2021-06-11 09:28:41,035 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:28:41,036 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 09:28:41,036 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:28:41,036 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:28:41,036 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:28:41,036 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:28:41,036 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:28:41,036 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:28:41,036 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:28:41,036 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:28:41,038 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 431 places, 260 transitions, 8085 flow [2021-06-11 09:28:41,143 INFO L129 PetriNetUnfolder]: 0/515 cut-off events. [2021-06-11 09:28:41,143 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:28:41,143 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. [2021-06-11 09:28:41,143 INFO L82 GeneralOperation]: Start removeDead. Operand has 431 places, 260 transitions, 8085 flow [2021-06-11 09:28:41,146 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 429 places, 258 transitions, 8081 flow [2021-06-11 09:28:41,146 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:28:41,146 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 429 places, 258 transitions, 8081 flow [2021-06-11 09:28:41,146 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 429 places, 258 transitions, 8081 flow [2021-06-11 09:28:41,148 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 429 places, 258 transitions, 8081 flow [2021-06-11 09:28:41,232 INFO L129 PetriNetUnfolder]: 0/343 cut-off events. [2021-06-11 09:28:41,232 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:28:41,232 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. [2021-06-11 09:28:41,265 INFO L151 LiptonReduction]: Number of co-enabled transitions 43520 [2021-06-11 09:29:03,802 INFO L163 LiptonReduction]: Checked pairs total: 18020 [2021-06-11 09:29:03,802 INFO L165 LiptonReduction]: Total number of compositions: 85 [2021-06-11 09:29:03,802 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 22656 [2021-06-11 09:29:03,803 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-06-11 09:29:03,803 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:29:03,803 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:29:03,803 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-06-11 09:29:03,803 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:29:03,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:29:03,803 INFO L82 PathProgramCache]: Analyzing trace with hash 479779, now seen corresponding path program 1 times [2021-06-11 09:29:03,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:29:03,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441157617] [2021-06-11 09:29:03,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:29:03,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:29:03,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:29:03,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:29:03,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:29:03,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441157617] [2021-06-11 09:29:03,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:29:03,830 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 09:29:03,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867758850] [2021-06-11 09:29:03,830 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:29:03,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:29:03,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:29:03,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:29:03,831 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 342 out of 345 [2021-06-11 09:29:03,832 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) [2021-06-11 09:29:03,832 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:29:03,832 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 342 of 345 [2021-06-11 09:29:03,832 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:29:03,889 INFO L129 PetriNetUnfolder]: 0/172 cut-off events. [2021-06-11 09:29:03,889 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:29:03,889 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. [2021-06-11 09:29:03,890 INFO L132 encePairwiseOnDemand]: 343/345 looper letters, 0 selfloop transitions, 1 changer transitions 0/172 dead transitions. [2021-06-11 09:29:03,890 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 172 transitions, 7911 flow [2021-06-11 09:29:03,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:29:03,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:29:03,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1028 transitions. [2021-06-11 09:29:03,891 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9932367149758454 [2021-06-11 09:29:03,891 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1028 transitions. [2021-06-11 09:29:03,891 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1028 transitions. [2021-06-11 09:29:03,891 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:29:03,891 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1028 transitions. [2021-06-11 09:29:03,891 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) [2021-06-11 09:29:03,892 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) [2021-06-11 09:29:03,892 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) [2021-06-11 09:29:03,892 INFO L185 Difference]: Start difference. First operand has 344 places, 173 transitions, 7911 flow. Second operand 3 states and 1028 transitions. [2021-06-11 09:29:03,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 172 transitions, 7911 flow [2021-06-11 09:29:04,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 172 transitions, 771 flow, removed 3570 selfloop flow, removed 0 redundant places. [2021-06-11 09:29:04,073 INFO L241 Difference]: Finished difference. Result has 345 places, 172 transitions, 771 flow [2021-06-11 09:29:04,073 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} [2021-06-11 09:29:04,073 INFO L343 CegarLoopForPetriNet]: 344 programPoint places, 1 predicate places. [2021-06-11 09:29:04,073 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:29:04,073 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 345 places, 172 transitions, 771 flow [2021-06-11 09:29:04,073 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 345 places, 172 transitions, 771 flow [2021-06-11 09:29:04,074 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 345 places, 172 transitions, 771 flow [2021-06-11 09:29:04,096 INFO L129 PetriNetUnfolder]: 0/172 cut-off events. [2021-06-11 09:29:04,096 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:29:04,096 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. [2021-06-11 09:29:04,100 INFO L151 LiptonReduction]: Number of co-enabled transitions 14450 [2021-06-11 09:29:04,109 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:29:04,110 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:29:04,110 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 37 [2021-06-11 09:29:04,110 INFO L480 AbstractCegarLoop]: Abstraction has has 345 places, 172 transitions, 771 flow [2021-06-11 09:29:04,110 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) [2021-06-11 09:29:04,110 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:29:04,110 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] [2021-06-11 09:29:04,110 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2021-06-11 09:29:04,110 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:29:04,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:29:04,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1051655111, now seen corresponding path program 1 times [2021-06-11 09:29:04,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:29:04,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487416340] [2021-06-11 09:29:04,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:29:04,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:29:04,130 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:29:04,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:29:04,132 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:29:04,146 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:29:04,146 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:29:04,146 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2021-06-11 09:29:04,146 WARN L342 ceAbstractionStarter]: 85 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:29:04,146 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 86 thread instances. [2021-06-11 09:29:04,264 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:29:04,265 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 09:29:04,265 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:29:04,265 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:29:04,265 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:29:04,265 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:29:04,265 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:29:04,265 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:29:04,265 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:29:04,265 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:29:04,267 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 436 places, 263 transitions, 8266 flow [2021-06-11 09:29:04,378 INFO L129 PetriNetUnfolder]: 0/521 cut-off events. [2021-06-11 09:29:04,378 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:29:04,379 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. [2021-06-11 09:29:04,379 INFO L82 GeneralOperation]: Start removeDead. Operand has 436 places, 263 transitions, 8266 flow [2021-06-11 09:29:04,381 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 434 places, 261 transitions, 8262 flow [2021-06-11 09:29:04,381 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:29:04,382 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 434 places, 261 transitions, 8262 flow [2021-06-11 09:29:04,382 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 434 places, 261 transitions, 8262 flow [2021-06-11 09:29:04,384 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 434 places, 261 transitions, 8262 flow [2021-06-11 09:29:04,471 INFO L129 PetriNetUnfolder]: 0/347 cut-off events. [2021-06-11 09:29:04,471 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:29:04,471 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. [2021-06-11 09:29:04,505 INFO L151 LiptonReduction]: Number of co-enabled transitions 44548 [2021-06-11 09:29:29,298 INFO L163 LiptonReduction]: Checked pairs total: 18447 [2021-06-11 09:29:29,299 INFO L165 LiptonReduction]: Total number of compositions: 86 [2021-06-11 09:29:29,299 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 24918 [2021-06-11 09:29:29,300 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-06-11 09:29:29,300 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:29:29,300 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:29:29,300 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-06-11 09:29:29,300 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:29:29,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:29:29,300 INFO L82 PathProgramCache]: Analyzing trace with hash 490915, now seen corresponding path program 1 times [2021-06-11 09:29:29,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:29:29,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204065769] [2021-06-11 09:29:29,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:29:29,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:29:29,321 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:29:29,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:29:29,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:29:29,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204065769] [2021-06-11 09:29:29,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:29:29,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 09:29:29,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913332194] [2021-06-11 09:29:29,329 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:29:29,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:29:29,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:29:29,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:29:29,330 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 346 out of 349 [2021-06-11 09:29:29,330 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) [2021-06-11 09:29:29,330 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:29:29,330 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 346 of 349 [2021-06-11 09:29:29,330 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:29:29,389 INFO L129 PetriNetUnfolder]: 0/174 cut-off events. [2021-06-11 09:29:29,389 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:29:29,389 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. [2021-06-11 09:29:29,389 INFO L132 encePairwiseOnDemand]: 347/349 looper letters, 0 selfloop transitions, 1 changer transitions 0/174 dead transitions. [2021-06-11 09:29:29,389 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 174 transitions, 8090 flow [2021-06-11 09:29:29,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:29:29,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:29:29,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1040 transitions. [2021-06-11 09:29:29,390 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9933142311365807 [2021-06-11 09:29:29,390 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1040 transitions. [2021-06-11 09:29:29,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1040 transitions. [2021-06-11 09:29:29,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:29:29,390 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1040 transitions. [2021-06-11 09:29:29,391 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) [2021-06-11 09:29:29,392 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) [2021-06-11 09:29:29,392 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) [2021-06-11 09:29:29,392 INFO L185 Difference]: Start difference. First operand has 348 places, 175 transitions, 8090 flow. Second operand 3 states and 1040 transitions. [2021-06-11 09:29:29,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 174 transitions, 8090 flow [2021-06-11 09:29:29,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 174 transitions, 780 flow, removed 3655 selfloop flow, removed 0 redundant places. [2021-06-11 09:29:29,580 INFO L241 Difference]: Finished difference. Result has 349 places, 174 transitions, 780 flow [2021-06-11 09:29:29,580 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} [2021-06-11 09:29:29,581 INFO L343 CegarLoopForPetriNet]: 348 programPoint places, 1 predicate places. [2021-06-11 09:29:29,581 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:29:29,581 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 349 places, 174 transitions, 780 flow [2021-06-11 09:29:29,581 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 349 places, 174 transitions, 780 flow [2021-06-11 09:29:29,581 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 349 places, 174 transitions, 780 flow [2021-06-11 09:29:29,604 INFO L129 PetriNetUnfolder]: 0/174 cut-off events. [2021-06-11 09:29:29,604 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:29:29,604 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. [2021-06-11 09:29:29,608 INFO L151 LiptonReduction]: Number of co-enabled transitions 14792 [2021-06-11 09:29:29,618 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:29:29,618 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:29:29,618 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 37 [2021-06-11 09:29:29,618 INFO L480 AbstractCegarLoop]: Abstraction has has 349 places, 174 transitions, 780 flow [2021-06-11 09:29:29,619 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) [2021-06-11 09:29:29,619 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:29:29,619 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] [2021-06-11 09:29:29,619 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2021-06-11 09:29:29,619 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:29:29,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:29:29,619 INFO L82 PathProgramCache]: Analyzing trace with hash 466958825, now seen corresponding path program 1 times [2021-06-11 09:29:29,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:29:29,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057576227] [2021-06-11 09:29:29,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:29:29,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:29:29,639 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:29:29,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:29:29,640 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:29:29,655 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:29:29,655 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:29:29,655 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2021-06-11 09:29:29,655 WARN L342 ceAbstractionStarter]: 86 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:29:29,656 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 87 thread instances. [2021-06-11 09:29:29,790 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:29:29,790 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 09:29:29,791 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:29:29,791 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:29:29,791 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:29:29,791 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:29:29,791 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:29:29,791 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:29:29,791 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:29:29,791 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:29:29,793 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 441 places, 266 transitions, 8449 flow [2021-06-11 09:29:29,902 INFO L129 PetriNetUnfolder]: 0/527 cut-off events. [2021-06-11 09:29:29,903 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:29:29,903 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. [2021-06-11 09:29:29,903 INFO L82 GeneralOperation]: Start removeDead. Operand has 441 places, 266 transitions, 8449 flow [2021-06-11 09:29:29,905 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 439 places, 264 transitions, 8445 flow [2021-06-11 09:29:29,906 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:29:29,906 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 439 places, 264 transitions, 8445 flow [2021-06-11 09:29:29,906 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 439 places, 264 transitions, 8445 flow [2021-06-11 09:29:29,908 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 439 places, 264 transitions, 8445 flow [2021-06-11 09:29:30,107 INFO L129 PetriNetUnfolder]: 0/351 cut-off events. [2021-06-11 09:29:30,107 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:29:30,107 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. [2021-06-11 09:29:30,143 INFO L151 LiptonReduction]: Number of co-enabled transitions 45588 [2021-06-11 09:29:56,821 INFO L163 LiptonReduction]: Checked pairs total: 18879 [2021-06-11 09:29:56,821 INFO L165 LiptonReduction]: Total number of compositions: 87 [2021-06-11 09:29:56,822 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 26917 [2021-06-11 09:29:56,822 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-06-11 09:29:56,822 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:29:56,823 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:29:56,823 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-06-11 09:29:56,823 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:29:56,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:29:56,823 INFO L82 PathProgramCache]: Analyzing trace with hash 502179, now seen corresponding path program 1 times [2021-06-11 09:29:56,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:29:56,823 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124100530] [2021-06-11 09:29:56,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:29:56,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:29:56,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:29:56,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:29:56,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:29:56,853 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124100530] [2021-06-11 09:29:56,853 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:29:56,853 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 09:29:56,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382348426] [2021-06-11 09:29:56,853 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:29:56,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:29:56,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:29:56,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:29:56,854 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 350 out of 353 [2021-06-11 09:29:56,854 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) [2021-06-11 09:29:56,854 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:29:56,854 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 350 of 353 [2021-06-11 09:29:56,854 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:29:56,914 INFO L129 PetriNetUnfolder]: 0/176 cut-off events. [2021-06-11 09:29:56,914 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:29:56,914 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. [2021-06-11 09:29:56,915 INFO L132 encePairwiseOnDemand]: 351/353 looper letters, 0 selfloop transitions, 1 changer transitions 0/176 dead transitions. [2021-06-11 09:29:56,915 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 176 transitions, 8271 flow [2021-06-11 09:29:56,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:29:56,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:29:56,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1052 transitions. [2021-06-11 09:29:56,915 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9933899905571294 [2021-06-11 09:29:56,915 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1052 transitions. [2021-06-11 09:29:56,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1052 transitions. [2021-06-11 09:29:56,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:29:56,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1052 transitions. [2021-06-11 09:29:56,916 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) [2021-06-11 09:29:56,917 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) [2021-06-11 09:29:56,917 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) [2021-06-11 09:29:56,917 INFO L185 Difference]: Start difference. First operand has 352 places, 177 transitions, 8271 flow. Second operand 3 states and 1052 transitions. [2021-06-11 09:29:56,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 176 transitions, 8271 flow [2021-06-11 09:29:57,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 176 transitions, 789 flow, removed 3741 selfloop flow, removed 0 redundant places. [2021-06-11 09:29:57,119 INFO L241 Difference]: Finished difference. Result has 353 places, 176 transitions, 789 flow [2021-06-11 09:29:57,119 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} [2021-06-11 09:29:57,119 INFO L343 CegarLoopForPetriNet]: 352 programPoint places, 1 predicate places. [2021-06-11 09:29:57,120 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:29:57,120 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 353 places, 176 transitions, 789 flow [2021-06-11 09:29:57,120 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 353 places, 176 transitions, 789 flow [2021-06-11 09:29:57,120 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 353 places, 176 transitions, 789 flow [2021-06-11 09:29:57,144 INFO L129 PetriNetUnfolder]: 0/176 cut-off events. [2021-06-11 09:29:57,144 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:29:57,144 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. [2021-06-11 09:29:57,148 INFO L151 LiptonReduction]: Number of co-enabled transitions 15138 [2021-06-11 09:29:57,158 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:29:57,158 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:29:57,158 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 38 [2021-06-11 09:29:57,158 INFO L480 AbstractCegarLoop]: Abstraction has has 353 places, 176 transitions, 789 flow [2021-06-11 09:29:57,159 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) [2021-06-11 09:29:57,159 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:29:57,159 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] [2021-06-11 09:29:57,159 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2021-06-11 09:29:57,159 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:29:57,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:29:57,159 INFO L82 PathProgramCache]: Analyzing trace with hash -307648862, now seen corresponding path program 1 times [2021-06-11 09:29:57,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:29:57,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831817653] [2021-06-11 09:29:57,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:29:57,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:29:57,180 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:29:57,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:29:57,185 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:29:57,200 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:29:57,200 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:29:57,200 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2021-06-11 09:29:57,200 WARN L342 ceAbstractionStarter]: 87 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:29:57,201 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 88 thread instances. [2021-06-11 09:29:57,334 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:29:57,334 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 09:29:57,334 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:29:57,334 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:29:57,334 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:29:57,334 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:29:57,334 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:29:57,334 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:29:57,334 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:29:57,334 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:29:57,336 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 446 places, 269 transitions, 8634 flow [2021-06-11 09:29:57,454 INFO L129 PetriNetUnfolder]: 0/533 cut-off events. [2021-06-11 09:29:57,454 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:29:57,454 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. [2021-06-11 09:29:57,454 INFO L82 GeneralOperation]: Start removeDead. Operand has 446 places, 269 transitions, 8634 flow [2021-06-11 09:29:57,457 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 444 places, 267 transitions, 8630 flow [2021-06-11 09:29:57,457 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:29:57,457 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 444 places, 267 transitions, 8630 flow [2021-06-11 09:29:57,457 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 444 places, 267 transitions, 8630 flow [2021-06-11 09:29:57,459 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 444 places, 267 transitions, 8630 flow [2021-06-11 09:29:57,551 INFO L129 PetriNetUnfolder]: 0/355 cut-off events. [2021-06-11 09:29:57,551 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:29:57,551 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. [2021-06-11 09:29:57,587 INFO L151 LiptonReduction]: Number of co-enabled transitions 46640 [2021-06-11 09:30:27,741 INFO L163 LiptonReduction]: Checked pairs total: 19316 [2021-06-11 09:30:27,742 INFO L165 LiptonReduction]: Total number of compositions: 88 [2021-06-11 09:30:27,742 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 30285 [2021-06-11 09:30:27,743 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-06-11 09:30:27,743 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:30:27,743 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:30:27,743 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-06-11 09:30:27,743 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:30:27,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:30:27,743 INFO L82 PathProgramCache]: Analyzing trace with hash 513571, now seen corresponding path program 1 times [2021-06-11 09:30:27,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:30:27,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543820457] [2021-06-11 09:30:27,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:30:27,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:30:27,765 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:30:27,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:30:27,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:30:27,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543820457] [2021-06-11 09:30:27,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:30:27,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 09:30:27,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427266729] [2021-06-11 09:30:27,773 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:30:27,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:30:27,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:30:27,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:30:27,774 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 354 out of 357 [2021-06-11 09:30:27,775 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) [2021-06-11 09:30:27,775 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:30:27,775 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 354 of 357 [2021-06-11 09:30:27,775 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:30:27,837 INFO L129 PetriNetUnfolder]: 0/178 cut-off events. [2021-06-11 09:30:27,837 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:30:27,838 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. [2021-06-11 09:30:27,838 INFO L132 encePairwiseOnDemand]: 355/357 looper letters, 0 selfloop transitions, 1 changer transitions 0/178 dead transitions. [2021-06-11 09:30:27,838 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 178 transitions, 8454 flow [2021-06-11 09:30:27,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:30:27,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:30:27,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1064 transitions. [2021-06-11 09:30:27,839 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9934640522875817 [2021-06-11 09:30:27,839 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1064 transitions. [2021-06-11 09:30:27,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1064 transitions. [2021-06-11 09:30:27,839 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:30:27,839 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1064 transitions. [2021-06-11 09:30:27,840 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) [2021-06-11 09:30:27,840 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) [2021-06-11 09:30:27,840 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) [2021-06-11 09:30:27,840 INFO L185 Difference]: Start difference. First operand has 356 places, 179 transitions, 8454 flow. Second operand 3 states and 1064 transitions. [2021-06-11 09:30:27,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 178 transitions, 8454 flow [2021-06-11 09:30:28,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 178 transitions, 798 flow, removed 3828 selfloop flow, removed 0 redundant places. [2021-06-11 09:30:28,057 INFO L241 Difference]: Finished difference. Result has 357 places, 178 transitions, 798 flow [2021-06-11 09:30:28,057 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} [2021-06-11 09:30:28,057 INFO L343 CegarLoopForPetriNet]: 356 programPoint places, 1 predicate places. [2021-06-11 09:30:28,057 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:30:28,057 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 357 places, 178 transitions, 798 flow [2021-06-11 09:30:28,057 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 357 places, 178 transitions, 798 flow [2021-06-11 09:30:28,058 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 357 places, 178 transitions, 798 flow [2021-06-11 09:30:28,082 INFO L129 PetriNetUnfolder]: 0/178 cut-off events. [2021-06-11 09:30:28,082 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:30:28,082 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. [2021-06-11 09:30:28,086 INFO L151 LiptonReduction]: Number of co-enabled transitions 15488 [2021-06-11 09:30:28,096 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:30:28,096 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:30:28,096 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 39 [2021-06-11 09:30:28,097 INFO L480 AbstractCegarLoop]: Abstraction has has 357 places, 178 transitions, 798 flow [2021-06-11 09:30:28,097 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) [2021-06-11 09:30:28,097 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:30:28,097 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] [2021-06-11 09:30:28,097 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2021-06-11 09:30:28,097 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:30:28,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:30:28,097 INFO L82 PathProgramCache]: Analyzing trace with hash 1917844908, now seen corresponding path program 1 times [2021-06-11 09:30:28,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:30:28,097 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331612255] [2021-06-11 09:30:28,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:30:28,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:30:28,118 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:30:28,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:30:28,119 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:30:28,134 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:30:28,135 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:30:28,135 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2021-06-11 09:30:28,135 WARN L342 ceAbstractionStarter]: 88 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:30:28,135 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 89 thread instances. [2021-06-11 09:30:28,280 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:30:28,280 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 09:30:28,280 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:30:28,280 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:30:28,280 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:30:28,280 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:30:28,280 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:30:28,280 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:30:28,280 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:30:28,280 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:30:28,282 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 451 places, 272 transitions, 8821 flow [2021-06-11 09:30:28,401 INFO L129 PetriNetUnfolder]: 0/539 cut-off events. [2021-06-11 09:30:28,401 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:30:28,402 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. [2021-06-11 09:30:28,402 INFO L82 GeneralOperation]: Start removeDead. Operand has 451 places, 272 transitions, 8821 flow [2021-06-11 09:30:28,405 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 449 places, 270 transitions, 8817 flow [2021-06-11 09:30:28,405 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:30:28,405 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 449 places, 270 transitions, 8817 flow [2021-06-11 09:30:28,405 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 449 places, 270 transitions, 8817 flow [2021-06-11 09:30:28,407 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 449 places, 270 transitions, 8817 flow [2021-06-11 09:30:28,501 INFO L129 PetriNetUnfolder]: 0/359 cut-off events. [2021-06-11 09:30:28,501 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:30:28,501 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. [2021-06-11 09:30:28,538 INFO L151 LiptonReduction]: Number of co-enabled transitions 47704 [2021-06-11 09:30:53,472 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 5 [2021-06-11 09:31:01,765 INFO L163 LiptonReduction]: Checked pairs total: 19758 [2021-06-11 09:31:01,765 INFO L165 LiptonReduction]: Total number of compositions: 89 [2021-06-11 09:31:01,765 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 33360 [2021-06-11 09:31:01,766 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-06-11 09:31:01,766 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:31:01,766 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:31:01,766 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-06-11 09:31:01,766 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:31:01,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:31:01,766 INFO L82 PathProgramCache]: Analyzing trace with hash 525091, now seen corresponding path program 1 times [2021-06-11 09:31:01,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:31:01,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443381599] [2021-06-11 09:31:01,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:31:01,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:31:01,796 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:31:01,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:31:01,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:31:01,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443381599] [2021-06-11 09:31:01,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:31:01,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 09:31:01,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299997346] [2021-06-11 09:31:01,804 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:31:01,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:31:01,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:31:01,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:31:01,805 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 358 out of 361 [2021-06-11 09:31:01,805 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) [2021-06-11 09:31:01,806 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:31:01,806 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 358 of 361 [2021-06-11 09:31:01,806 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:31:01,867 INFO L129 PetriNetUnfolder]: 0/180 cut-off events. [2021-06-11 09:31:01,867 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:31:01,868 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. [2021-06-11 09:31:01,868 INFO L132 encePairwiseOnDemand]: 359/361 looper letters, 0 selfloop transitions, 1 changer transitions 0/180 dead transitions. [2021-06-11 09:31:01,868 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 180 transitions, 8639 flow [2021-06-11 09:31:01,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:31:01,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:31:01,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1076 transitions. [2021-06-11 09:31:01,869 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9935364727608494 [2021-06-11 09:31:01,869 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1076 transitions. [2021-06-11 09:31:01,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1076 transitions. [2021-06-11 09:31:01,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:31:01,869 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1076 transitions. [2021-06-11 09:31:01,870 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) [2021-06-11 09:31:01,870 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) [2021-06-11 09:31:01,870 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) [2021-06-11 09:31:01,870 INFO L185 Difference]: Start difference. First operand has 360 places, 181 transitions, 8639 flow. Second operand 3 states and 1076 transitions. [2021-06-11 09:31:01,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 180 transitions, 8639 flow [2021-06-11 09:31:02,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 180 transitions, 807 flow, removed 3916 selfloop flow, removed 0 redundant places. [2021-06-11 09:31:02,091 INFO L241 Difference]: Finished difference. Result has 361 places, 180 transitions, 807 flow [2021-06-11 09:31:02,091 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} [2021-06-11 09:31:02,091 INFO L343 CegarLoopForPetriNet]: 360 programPoint places, 1 predicate places. [2021-06-11 09:31:02,091 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:31:02,091 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 361 places, 180 transitions, 807 flow [2021-06-11 09:31:02,091 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 361 places, 180 transitions, 807 flow [2021-06-11 09:31:02,092 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 361 places, 180 transitions, 807 flow [2021-06-11 09:31:02,116 INFO L129 PetriNetUnfolder]: 0/180 cut-off events. [2021-06-11 09:31:02,116 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:31:02,116 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. [2021-06-11 09:31:02,120 INFO L151 LiptonReduction]: Number of co-enabled transitions 15842 [2021-06-11 09:31:02,130 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:31:02,130 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:31:02,131 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 40 [2021-06-11 09:31:02,131 INFO L480 AbstractCegarLoop]: Abstraction has has 361 places, 180 transitions, 807 flow [2021-06-11 09:31:02,131 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) [2021-06-11 09:31:02,131 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:31:02,131 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] [2021-06-11 09:31:02,131 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2021-06-11 09:31:02,131 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:31:02,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:31:02,131 INFO L82 PathProgramCache]: Analyzing trace with hash -53025395, now seen corresponding path program 1 times [2021-06-11 09:31:02,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:31:02,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831795953] [2021-06-11 09:31:02,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:31:02,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:31:02,153 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:31:02,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:31:02,154 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:31:02,170 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:31:02,170 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:31:02,170 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2021-06-11 09:31:02,170 WARN L342 ceAbstractionStarter]: 89 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:31:02,170 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 90 thread instances. [2021-06-11 09:31:02,310 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:31:02,311 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 09:31:02,311 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:31:02,311 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:31:02,311 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:31:02,311 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:31:02,311 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:31:02,311 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:31:02,311 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:31:02,311 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:31:02,313 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 456 places, 275 transitions, 9010 flow [2021-06-11 09:31:02,434 INFO L129 PetriNetUnfolder]: 0/545 cut-off events. [2021-06-11 09:31:02,434 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:31:02,434 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. [2021-06-11 09:31:02,434 INFO L82 GeneralOperation]: Start removeDead. Operand has 456 places, 275 transitions, 9010 flow [2021-06-11 09:31:02,437 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 454 places, 273 transitions, 9006 flow [2021-06-11 09:31:02,437 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:31:02,437 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 454 places, 273 transitions, 9006 flow [2021-06-11 09:31:02,437 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 454 places, 273 transitions, 9006 flow [2021-06-11 09:31:02,439 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 454 places, 273 transitions, 9006 flow [2021-06-11 09:31:02,536 INFO L129 PetriNetUnfolder]: 0/363 cut-off events. [2021-06-11 09:31:02,536 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:31:02,536 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. [2021-06-11 09:31:02,575 INFO L151 LiptonReduction]: Number of co-enabled transitions 48780 [2021-06-11 09:31:36,935 INFO L163 LiptonReduction]: Checked pairs total: 20205 [2021-06-11 09:31:36,935 INFO L165 LiptonReduction]: Total number of compositions: 90 [2021-06-11 09:31:36,935 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 34498 [2021-06-11 09:31:36,936 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-06-11 09:31:36,936 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:31:36,936 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:31:36,936 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-06-11 09:31:36,936 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:31:36,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:31:36,936 INFO L82 PathProgramCache]: Analyzing trace with hash 536739, now seen corresponding path program 1 times [2021-06-11 09:31:36,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:31:36,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418921650] [2021-06-11 09:31:36,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:31:36,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:31:36,960 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:31:36,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:31:36,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:31:36,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418921650] [2021-06-11 09:31:36,970 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:31:36,970 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 09:31:36,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201398805] [2021-06-11 09:31:36,970 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:31:36,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:31:36,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:31:36,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:31:36,971 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 362 out of 365 [2021-06-11 09:31:36,971 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) [2021-06-11 09:31:36,971 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:31:36,972 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 362 of 365 [2021-06-11 09:31:36,972 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:31:37,036 INFO L129 PetriNetUnfolder]: 0/182 cut-off events. [2021-06-11 09:31:37,036 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:31:37,036 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. [2021-06-11 09:31:37,037 INFO L132 encePairwiseOnDemand]: 363/365 looper letters, 0 selfloop transitions, 1 changer transitions 0/182 dead transitions. [2021-06-11 09:31:37,037 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 182 transitions, 8826 flow [2021-06-11 09:31:37,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:31:37,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:31:37,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1088 transitions. [2021-06-11 09:31:37,037 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.993607305936073 [2021-06-11 09:31:37,037 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1088 transitions. [2021-06-11 09:31:37,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1088 transitions. [2021-06-11 09:31:37,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:31:37,038 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1088 transitions. [2021-06-11 09:31:37,038 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) [2021-06-11 09:31:37,039 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) [2021-06-11 09:31:37,039 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) [2021-06-11 09:31:37,039 INFO L185 Difference]: Start difference. First operand has 364 places, 183 transitions, 8826 flow. Second operand 3 states and 1088 transitions. [2021-06-11 09:31:37,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 182 transitions, 8826 flow [2021-06-11 09:31:37,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 182 transitions, 816 flow, removed 4005 selfloop flow, removed 0 redundant places. [2021-06-11 09:31:37,271 INFO L241 Difference]: Finished difference. Result has 365 places, 182 transitions, 816 flow [2021-06-11 09:31:37,271 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} [2021-06-11 09:31:37,271 INFO L343 CegarLoopForPetriNet]: 364 programPoint places, 1 predicate places. [2021-06-11 09:31:37,271 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:31:37,271 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 365 places, 182 transitions, 816 flow [2021-06-11 09:31:37,271 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 365 places, 182 transitions, 816 flow [2021-06-11 09:31:37,272 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 365 places, 182 transitions, 816 flow [2021-06-11 09:31:37,296 INFO L129 PetriNetUnfolder]: 0/182 cut-off events. [2021-06-11 09:31:37,296 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:31:37,297 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. [2021-06-11 09:31:37,301 INFO L151 LiptonReduction]: Number of co-enabled transitions 16200 [2021-06-11 09:31:37,311 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:31:37,311 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:31:37,311 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 40 [2021-06-11 09:31:37,312 INFO L480 AbstractCegarLoop]: Abstraction has has 365 places, 182 transitions, 816 flow [2021-06-11 09:31:37,312 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) [2021-06-11 09:31:37,312 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:31:37,312 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 09:31:37,312 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2021-06-11 09:31:37,312 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:31:37,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:31:37,312 INFO L82 PathProgramCache]: Analyzing trace with hash -1850711697, now seen corresponding path program 1 times [2021-06-11 09:31:37,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:31:37,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321144033] [2021-06-11 09:31:37,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:31:37,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:31:37,332 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:31:37,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:31:37,334 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:31:37,349 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:31:37,350 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:31:37,350 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2021-06-11 09:31:37,350 WARN L342 ceAbstractionStarter]: 90 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:31:37,350 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 91 thread instances. [2021-06-11 09:31:37,510 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:31:37,510 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 09:31:37,511 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:31:37,511 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:31:37,511 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:31:37,511 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:31:37,511 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:31:37,511 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:31:37,511 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:31:37,511 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:31:37,513 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 461 places, 278 transitions, 9201 flow [2021-06-11 09:31:37,637 INFO L129 PetriNetUnfolder]: 0/551 cut-off events. [2021-06-11 09:31:37,637 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:31:37,637 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. [2021-06-11 09:31:37,638 INFO L82 GeneralOperation]: Start removeDead. Operand has 461 places, 278 transitions, 9201 flow [2021-06-11 09:31:37,640 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 459 places, 276 transitions, 9197 flow [2021-06-11 09:31:37,640 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:31:37,641 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 459 places, 276 transitions, 9197 flow [2021-06-11 09:31:37,641 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 459 places, 276 transitions, 9197 flow [2021-06-11 09:31:37,643 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 459 places, 276 transitions, 9197 flow [2021-06-11 09:31:37,742 INFO L129 PetriNetUnfolder]: 0/367 cut-off events. [2021-06-11 09:31:37,742 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:31:37,742 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. [2021-06-11 09:31:37,781 INFO L151 LiptonReduction]: Number of co-enabled transitions 49868 [2021-06-11 09:32:14,283 INFO L163 LiptonReduction]: Checked pairs total: 20657 [2021-06-11 09:32:14,283 INFO L165 LiptonReduction]: Total number of compositions: 91 [2021-06-11 09:32:14,284 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 36644 [2021-06-11 09:32:14,284 INFO L129 PetriNetUnfolder]: 0/1 cut-off events. [2021-06-11 09:32:14,284 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:32:14,284 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:32:14,284 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-06-11 09:32:14,284 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:32:14,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:32:14,284 INFO L82 PathProgramCache]: Analyzing trace with hash 548515, now seen corresponding path program 1 times [2021-06-11 09:32:14,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:32:14,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813446083] [2021-06-11 09:32:14,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:32:14,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:32:14,307 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:32:14,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:32:14,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:32:14,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813446083] [2021-06-11 09:32:14,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:32:14,316 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 09:32:14,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072982815] [2021-06-11 09:32:14,316 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:32:14,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:32:14,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:32:14,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:32:14,317 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 366 out of 369 [2021-06-11 09:32:14,317 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) [2021-06-11 09:32:14,317 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:32:14,317 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 366 of 369 [2021-06-11 09:32:14,317 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:32:14,384 INFO L129 PetriNetUnfolder]: 0/184 cut-off events. [2021-06-11 09:32:14,384 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:32:14,384 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. [2021-06-11 09:32:14,385 INFO L132 encePairwiseOnDemand]: 367/369 looper letters, 0 selfloop transitions, 1 changer transitions 0/184 dead transitions. [2021-06-11 09:32:14,385 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 184 transitions, 9015 flow [2021-06-11 09:32:14,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:32:14,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:32:14,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1100 transitions. [2021-06-11 09:32:14,386 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.993676603432701 [2021-06-11 09:32:14,386 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1100 transitions. [2021-06-11 09:32:14,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1100 transitions. [2021-06-11 09:32:14,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:32:14,386 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1100 transitions. [2021-06-11 09:32:14,387 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) [2021-06-11 09:32:14,387 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) [2021-06-11 09:32:14,387 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) [2021-06-11 09:32:14,387 INFO L185 Difference]: Start difference. First operand has 368 places, 185 transitions, 9015 flow. Second operand 3 states and 1100 transitions. [2021-06-11 09:32:14,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 184 transitions, 9015 flow [2021-06-11 09:32:14,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 184 transitions, 825 flow, removed 4095 selfloop flow, removed 0 redundant places. [2021-06-11 09:32:14,629 INFO L241 Difference]: Finished difference. Result has 369 places, 184 transitions, 825 flow [2021-06-11 09:32:14,629 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} [2021-06-11 09:32:14,629 INFO L343 CegarLoopForPetriNet]: 368 programPoint places, 1 predicate places. [2021-06-11 09:32:14,629 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:32:14,629 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 369 places, 184 transitions, 825 flow [2021-06-11 09:32:14,629 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 369 places, 184 transitions, 825 flow [2021-06-11 09:32:14,630 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 369 places, 184 transitions, 825 flow [2021-06-11 09:32:14,654 INFO L129 PetriNetUnfolder]: 0/184 cut-off events. [2021-06-11 09:32:14,655 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:32:14,655 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. [2021-06-11 09:32:14,659 INFO L151 LiptonReduction]: Number of co-enabled transitions 16562 [2021-06-11 09:32:14,670 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:32:14,670 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:32:14,670 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 41 [2021-06-11 09:32:14,670 INFO L480 AbstractCegarLoop]: Abstraction has has 369 places, 184 transitions, 825 flow [2021-06-11 09:32:14,670 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) [2021-06-11 09:32:14,670 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:32:14,670 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] [2021-06-11 09:32:14,670 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2021-06-11 09:32:14,671 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:32:14,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:32:14,671 INFO L82 PathProgramCache]: Analyzing trace with hash 815608456, now seen corresponding path program 1 times [2021-06-11 09:32:14,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:32:14,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167202926] [2021-06-11 09:32:14,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:32:14,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:32:14,691 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:32:14,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:32:14,693 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:32:14,709 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:32:14,709 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:32:14,709 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2021-06-11 09:32:14,709 WARN L342 ceAbstractionStarter]: 91 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:32:14,709 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 92 thread instances. [2021-06-11 09:32:14,863 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:32:14,863 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 09:32:14,864 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:32:14,864 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:32:14,864 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:32:14,864 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:32:14,864 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:32:14,864 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:32:14,864 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:32:14,864 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:32:14,866 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 466 places, 281 transitions, 9394 flow [2021-06-11 09:32:14,990 INFO L129 PetriNetUnfolder]: 0/557 cut-off events. [2021-06-11 09:32:14,990 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:32:14,990 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. [2021-06-11 09:32:14,990 INFO L82 GeneralOperation]: Start removeDead. Operand has 466 places, 281 transitions, 9394 flow [2021-06-11 09:32:15,110 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 464 places, 279 transitions, 9390 flow [2021-06-11 09:32:15,110 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:32:15,110 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 464 places, 279 transitions, 9390 flow [2021-06-11 09:32:15,111 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 464 places, 279 transitions, 9390 flow [2021-06-11 09:32:15,113 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 464 places, 279 transitions, 9390 flow [2021-06-11 09:32:15,213 INFO L129 PetriNetUnfolder]: 0/371 cut-off events. [2021-06-11 09:32:15,214 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:32:15,214 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. [2021-06-11 09:32:15,255 INFO L151 LiptonReduction]: Number of co-enabled transitions 50968 [2021-06-11 09:32:54,059 INFO L163 LiptonReduction]: Checked pairs total: 21114 [2021-06-11 09:32:54,060 INFO L165 LiptonReduction]: Total number of compositions: 92 [2021-06-11 09:32:54,060 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 38950 [2021-06-11 09:32:54,061 INFO L129 PetriNetUnfolder]: 0/1 cut-off events. [2021-06-11 09:32:54,061 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:32:54,061 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:32:54,061 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-06-11 09:32:54,061 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:32:54,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:32:54,061 INFO L82 PathProgramCache]: Analyzing trace with hash 560419, now seen corresponding path program 1 times [2021-06-11 09:32:54,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:32:54,061 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944070038] [2021-06-11 09:32:54,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:32:54,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:32:54,084 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:32:54,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:32:54,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:32:54,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944070038] [2021-06-11 09:32:54,093 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:32:54,093 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 09:32:54,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608234130] [2021-06-11 09:32:54,093 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:32:54,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:32:54,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:32:54,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:32:54,094 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 370 out of 373 [2021-06-11 09:32:54,095 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) [2021-06-11 09:32:54,095 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:32:54,095 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 370 of 373 [2021-06-11 09:32:54,095 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:32:54,162 INFO L129 PetriNetUnfolder]: 0/186 cut-off events. [2021-06-11 09:32:54,162 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:32:54,162 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. [2021-06-11 09:32:54,163 INFO L132 encePairwiseOnDemand]: 371/373 looper letters, 0 selfloop transitions, 1 changer transitions 0/186 dead transitions. [2021-06-11 09:32:54,163 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 186 transitions, 9206 flow [2021-06-11 09:32:54,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:32:54,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:32:54,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1112 transitions. [2021-06-11 09:32:54,163 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9937444146559428 [2021-06-11 09:32:54,163 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1112 transitions. [2021-06-11 09:32:54,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1112 transitions. [2021-06-11 09:32:54,164 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:32:54,164 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1112 transitions. [2021-06-11 09:32:54,164 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) [2021-06-11 09:32:54,165 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) [2021-06-11 09:32:54,165 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) [2021-06-11 09:32:54,165 INFO L185 Difference]: Start difference. First operand has 372 places, 187 transitions, 9206 flow. Second operand 3 states and 1112 transitions. [2021-06-11 09:32:54,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 186 transitions, 9206 flow [2021-06-11 09:32:54,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 186 transitions, 834 flow, removed 4186 selfloop flow, removed 0 redundant places. [2021-06-11 09:32:54,413 INFO L241 Difference]: Finished difference. Result has 373 places, 186 transitions, 834 flow [2021-06-11 09:32:54,413 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} [2021-06-11 09:32:54,413 INFO L343 CegarLoopForPetriNet]: 372 programPoint places, 1 predicate places. [2021-06-11 09:32:54,413 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:32:54,413 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 373 places, 186 transitions, 834 flow [2021-06-11 09:32:54,413 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 373 places, 186 transitions, 834 flow [2021-06-11 09:32:54,414 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 373 places, 186 transitions, 834 flow [2021-06-11 09:32:54,440 INFO L129 PetriNetUnfolder]: 0/186 cut-off events. [2021-06-11 09:32:54,440 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:32:54,440 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. [2021-06-11 09:32:54,444 INFO L151 LiptonReduction]: Number of co-enabled transitions 16928 [2021-06-11 09:32:54,455 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:32:54,455 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:32:54,455 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 42 [2021-06-11 09:32:54,456 INFO L480 AbstractCegarLoop]: Abstraction has has 373 places, 186 transitions, 834 flow [2021-06-11 09:32:54,456 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) [2021-06-11 09:32:54,456 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:32:54,456 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] [2021-06-11 09:32:54,456 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2021-06-11 09:32:54,456 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:32:54,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:32:54,456 INFO L82 PathProgramCache]: Analyzing trace with hash 680422194, now seen corresponding path program 1 times [2021-06-11 09:32:54,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:32:54,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386626006] [2021-06-11 09:32:54,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:32:54,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:32:54,479 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:32:54,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:32:54,480 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:32:54,497 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:32:54,497 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:32:54,497 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2021-06-11 09:32:54,497 WARN L342 ceAbstractionStarter]: 92 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:32:54,497 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 93 thread instances. [2021-06-11 09:32:54,654 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:32:54,655 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 09:32:54,655 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:32:54,655 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:32:54,655 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:32:54,655 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:32:54,655 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:32:54,655 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:32:54,655 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:32:54,655 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:32:54,657 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 471 places, 284 transitions, 9589 flow [2021-06-11 09:32:54,789 INFO L129 PetriNetUnfolder]: 0/563 cut-off events. [2021-06-11 09:32:54,790 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:32:54,790 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. [2021-06-11 09:32:54,790 INFO L82 GeneralOperation]: Start removeDead. Operand has 471 places, 284 transitions, 9589 flow [2021-06-11 09:32:54,793 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 469 places, 282 transitions, 9585 flow [2021-06-11 09:32:54,793 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:32:54,793 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 469 places, 282 transitions, 9585 flow [2021-06-11 09:32:54,793 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 469 places, 282 transitions, 9585 flow [2021-06-11 09:32:54,795 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 469 places, 282 transitions, 9585 flow [2021-06-11 09:32:54,901 INFO L129 PetriNetUnfolder]: 0/375 cut-off events. [2021-06-11 09:32:54,901 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:32:54,901 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. [2021-06-11 09:32:54,943 INFO L151 LiptonReduction]: Number of co-enabled transitions 52080 [2021-06-11 09:33:35,119 INFO L163 LiptonReduction]: Checked pairs total: 21576 [2021-06-11 09:33:35,119 INFO L165 LiptonReduction]: Total number of compositions: 93 [2021-06-11 09:33:35,119 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 40326 [2021-06-11 09:33:35,120 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-06-11 09:33:35,120 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:33:35,120 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:33:35,120 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-06-11 09:33:35,120 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:33:35,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:33:35,120 INFO L82 PathProgramCache]: Analyzing trace with hash 572451, now seen corresponding path program 1 times [2021-06-11 09:33:35,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:33:35,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990161804] [2021-06-11 09:33:35,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:33:35,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:33:35,142 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:33:35,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:33:35,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:33:35,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990161804] [2021-06-11 09:33:35,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:33:35,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 09:33:35,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481804833] [2021-06-11 09:33:35,152 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:33:35,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:33:35,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:33:35,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:33:35,152 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 374 out of 377 [2021-06-11 09:33:35,153 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) [2021-06-11 09:33:35,153 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:33:35,153 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 374 of 377 [2021-06-11 09:33:35,153 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:33:35,221 INFO L129 PetriNetUnfolder]: 0/188 cut-off events. [2021-06-11 09:33:35,221 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:33:35,222 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. [2021-06-11 09:33:35,222 INFO L132 encePairwiseOnDemand]: 375/377 looper letters, 0 selfloop transitions, 1 changer transitions 0/188 dead transitions. [2021-06-11 09:33:35,222 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 188 transitions, 9399 flow [2021-06-11 09:33:35,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:33:35,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:33:35,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1124 transitions. [2021-06-11 09:33:35,223 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9938107869142352 [2021-06-11 09:33:35,223 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1124 transitions. [2021-06-11 09:33:35,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1124 transitions. [2021-06-11 09:33:35,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:33:35,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1124 transitions. [2021-06-11 09:33:35,224 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) [2021-06-11 09:33:35,224 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) [2021-06-11 09:33:35,224 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) [2021-06-11 09:33:35,224 INFO L185 Difference]: Start difference. First operand has 376 places, 189 transitions, 9399 flow. Second operand 3 states and 1124 transitions. [2021-06-11 09:33:35,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 188 transitions, 9399 flow [2021-06-11 09:33:35,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 188 transitions, 843 flow, removed 4278 selfloop flow, removed 0 redundant places. [2021-06-11 09:33:35,495 INFO L241 Difference]: Finished difference. Result has 377 places, 188 transitions, 843 flow [2021-06-11 09:33:35,495 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} [2021-06-11 09:33:35,496 INFO L343 CegarLoopForPetriNet]: 376 programPoint places, 1 predicate places. [2021-06-11 09:33:35,496 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:33:35,496 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 377 places, 188 transitions, 843 flow [2021-06-11 09:33:35,496 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 377 places, 188 transitions, 843 flow [2021-06-11 09:33:35,496 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 377 places, 188 transitions, 843 flow [2021-06-11 09:33:35,523 INFO L129 PetriNetUnfolder]: 0/188 cut-off events. [2021-06-11 09:33:35,523 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:33:35,523 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. [2021-06-11 09:33:35,528 INFO L151 LiptonReduction]: Number of co-enabled transitions 17298 [2021-06-11 09:33:35,539 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:33:35,539 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:33:35,539 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 43 [2021-06-11 09:33:35,539 INFO L480 AbstractCegarLoop]: Abstraction has has 377 places, 188 transitions, 843 flow [2021-06-11 09:33:35,540 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) [2021-06-11 09:33:35,540 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:33:35,540 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] [2021-06-11 09:33:35,540 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2021-06-11 09:33:35,540 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:33:35,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:33:35,540 INFO L82 PathProgramCache]: Analyzing trace with hash 1058408339, now seen corresponding path program 1 times [2021-06-11 09:33:35,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:33:35,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321083579] [2021-06-11 09:33:35,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:33:35,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:33:35,562 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:33:35,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:33:35,564 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:33:35,580 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:33:35,581 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:33:35,581 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2021-06-11 09:33:35,581 WARN L342 ceAbstractionStarter]: 93 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:33:35,581 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 94 thread instances. [2021-06-11 09:33:35,756 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:33:35,756 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 09:33:35,757 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:33:35,757 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:33:35,757 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:33:35,757 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:33:35,757 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:33:35,757 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:33:35,757 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:33:35,757 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:33:35,759 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 476 places, 287 transitions, 9786 flow [2021-06-11 09:33:35,893 INFO L129 PetriNetUnfolder]: 0/569 cut-off events. [2021-06-11 09:33:35,894 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:33:35,894 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. [2021-06-11 09:33:35,894 INFO L82 GeneralOperation]: Start removeDead. Operand has 476 places, 287 transitions, 9786 flow [2021-06-11 09:33:35,897 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 474 places, 285 transitions, 9782 flow [2021-06-11 09:33:35,897 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:33:35,897 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 474 places, 285 transitions, 9782 flow [2021-06-11 09:33:35,897 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 474 places, 285 transitions, 9782 flow [2021-06-11 09:33:35,899 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 474 places, 285 transitions, 9782 flow [2021-06-11 09:33:36,008 INFO L129 PetriNetUnfolder]: 0/379 cut-off events. [2021-06-11 09:33:36,008 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:33:36,008 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. [2021-06-11 09:33:36,051 INFO L151 LiptonReduction]: Number of co-enabled transitions 53204 [2021-06-11 09:34:17,627 INFO L163 LiptonReduction]: Checked pairs total: 22043 [2021-06-11 09:34:17,627 INFO L165 LiptonReduction]: Total number of compositions: 94 [2021-06-11 09:34:17,627 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 41730 [2021-06-11 09:34:17,628 INFO L129 PetriNetUnfolder]: 0/1 cut-off events. [2021-06-11 09:34:17,628 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:34:17,628 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:34:17,628 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-06-11 09:34:17,628 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:34:17,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:34:17,628 INFO L82 PathProgramCache]: Analyzing trace with hash 584611, now seen corresponding path program 1 times [2021-06-11 09:34:17,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:34:17,628 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272321701] [2021-06-11 09:34:17,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:34:17,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:34:17,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:34:17,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:34:17,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:34:17,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272321701] [2021-06-11 09:34:17,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:34:17,660 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 09:34:17,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476633348] [2021-06-11 09:34:17,660 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:34:17,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:34:17,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:34:17,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:34:17,661 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 378 out of 381 [2021-06-11 09:34:17,661 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) [2021-06-11 09:34:17,661 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:34:17,661 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 378 of 381 [2021-06-11 09:34:17,661 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:34:17,731 INFO L129 PetriNetUnfolder]: 0/190 cut-off events. [2021-06-11 09:34:17,731 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:34:17,731 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. [2021-06-11 09:34:17,732 INFO L132 encePairwiseOnDemand]: 379/381 looper letters, 0 selfloop transitions, 1 changer transitions 0/190 dead transitions. [2021-06-11 09:34:17,732 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 190 transitions, 9594 flow [2021-06-11 09:34:17,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:34:17,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:34:17,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1136 transitions. [2021-06-11 09:34:17,733 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9938757655293088 [2021-06-11 09:34:17,733 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1136 transitions. [2021-06-11 09:34:17,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1136 transitions. [2021-06-11 09:34:17,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:34:17,733 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1136 transitions. [2021-06-11 09:34:17,733 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) [2021-06-11 09:34:17,734 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) [2021-06-11 09:34:17,734 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) [2021-06-11 09:34:17,734 INFO L185 Difference]: Start difference. First operand has 380 places, 191 transitions, 9594 flow. Second operand 3 states and 1136 transitions. [2021-06-11 09:34:17,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 190 transitions, 9594 flow [2021-06-11 09:34:17,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 190 transitions, 852 flow, removed 4371 selfloop flow, removed 0 redundant places. [2021-06-11 09:34:18,000 INFO L241 Difference]: Finished difference. Result has 381 places, 190 transitions, 852 flow [2021-06-11 09:34:18,001 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} [2021-06-11 09:34:18,001 INFO L343 CegarLoopForPetriNet]: 380 programPoint places, 1 predicate places. [2021-06-11 09:34:18,001 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:34:18,001 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 381 places, 190 transitions, 852 flow [2021-06-11 09:34:18,001 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 381 places, 190 transitions, 852 flow [2021-06-11 09:34:18,001 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 381 places, 190 transitions, 852 flow [2021-06-11 09:34:18,028 INFO L129 PetriNetUnfolder]: 0/190 cut-off events. [2021-06-11 09:34:18,028 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:34:18,028 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. [2021-06-11 09:34:18,033 INFO L151 LiptonReduction]: Number of co-enabled transitions 17672 [2021-06-11 09:34:18,044 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:34:18,044 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:34:18,044 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 43 [2021-06-11 09:34:18,044 INFO L480 AbstractCegarLoop]: Abstraction has has 381 places, 190 transitions, 852 flow [2021-06-11 09:34:18,044 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) [2021-06-11 09:34:18,045 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:34:18,045 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] [2021-06-11 09:34:18,045 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2021-06-11 09:34:18,045 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:34:18,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:34:18,045 INFO L82 PathProgramCache]: Analyzing trace with hash 1970217205, now seen corresponding path program 1 times [2021-06-11 09:34:18,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:34:18,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134686427] [2021-06-11 09:34:18,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:34:18,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:34:18,067 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:34:18,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:34:18,068 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:34:18,085 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:34:18,085 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:34:18,086 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2021-06-11 09:34:18,086 WARN L342 ceAbstractionStarter]: 94 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:34:18,086 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 95 thread instances. [2021-06-11 09:34:18,263 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:34:18,263 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 09:34:18,263 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:34:18,263 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:34:18,264 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:34:18,264 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:34:18,264 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:34:18,264 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:34:18,264 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:34:18,264 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:34:18,266 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 481 places, 290 transitions, 9985 flow [2021-06-11 09:34:18,402 INFO L129 PetriNetUnfolder]: 0/575 cut-off events. [2021-06-11 09:34:18,403 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:34:18,403 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. [2021-06-11 09:34:18,403 INFO L82 GeneralOperation]: Start removeDead. Operand has 481 places, 290 transitions, 9985 flow [2021-06-11 09:34:18,406 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 479 places, 288 transitions, 9981 flow [2021-06-11 09:34:18,406 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:34:18,406 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 479 places, 288 transitions, 9981 flow [2021-06-11 09:34:18,406 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 479 places, 288 transitions, 9981 flow [2021-06-11 09:34:18,408 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 479 places, 288 transitions, 9981 flow [2021-06-11 09:34:18,517 INFO L129 PetriNetUnfolder]: 0/383 cut-off events. [2021-06-11 09:34:18,518 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:34:18,518 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. [2021-06-11 09:34:18,561 INFO L151 LiptonReduction]: Number of co-enabled transitions 54340 [2021-06-11 09:35:04,061 INFO L163 LiptonReduction]: Checked pairs total: 22515 [2021-06-11 09:35:04,061 INFO L165 LiptonReduction]: Total number of compositions: 95 [2021-06-11 09:35:04,061 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 45655 [2021-06-11 09:35:04,062 INFO L129 PetriNetUnfolder]: 0/1 cut-off events. [2021-06-11 09:35:04,062 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:35:04,062 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:35:04,062 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-06-11 09:35:04,062 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:35:04,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:35:04,062 INFO L82 PathProgramCache]: Analyzing trace with hash 596899, now seen corresponding path program 1 times [2021-06-11 09:35:04,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:35:04,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068076798] [2021-06-11 09:35:04,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:35:04,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:35:04,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:35:04,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:35:04,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:35:04,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068076798] [2021-06-11 09:35:04,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:35:04,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 09:35:04,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658953589] [2021-06-11 09:35:04,097 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:35:04,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:35:04,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:35:04,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:35:04,098 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 382 out of 385 [2021-06-11 09:35:04,098 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) [2021-06-11 09:35:04,098 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:35:04,098 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 382 of 385 [2021-06-11 09:35:04,098 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:35:04,171 INFO L129 PetriNetUnfolder]: 0/192 cut-off events. [2021-06-11 09:35:04,172 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:35:04,172 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. [2021-06-11 09:35:04,172 INFO L132 encePairwiseOnDemand]: 383/385 looper letters, 0 selfloop transitions, 1 changer transitions 0/192 dead transitions. [2021-06-11 09:35:04,172 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 192 transitions, 9791 flow [2021-06-11 09:35:04,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:35:04,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:35:04,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1148 transitions. [2021-06-11 09:35:04,173 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9939393939393939 [2021-06-11 09:35:04,173 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1148 transitions. [2021-06-11 09:35:04,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1148 transitions. [2021-06-11 09:35:04,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:35:04,173 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1148 transitions. [2021-06-11 09:35:04,174 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) [2021-06-11 09:35:04,175 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) [2021-06-11 09:35:04,175 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) [2021-06-11 09:35:04,175 INFO L185 Difference]: Start difference. First operand has 384 places, 193 transitions, 9791 flow. Second operand 3 states and 1148 transitions. [2021-06-11 09:35:04,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 192 transitions, 9791 flow [2021-06-11 09:35:04,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 192 transitions, 861 flow, removed 4465 selfloop flow, removed 0 redundant places. [2021-06-11 09:35:04,448 INFO L241 Difference]: Finished difference. Result has 385 places, 192 transitions, 861 flow [2021-06-11 09:35:04,448 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} [2021-06-11 09:35:04,448 INFO L343 CegarLoopForPetriNet]: 384 programPoint places, 1 predicate places. [2021-06-11 09:35:04,448 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:35:04,448 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 385 places, 192 transitions, 861 flow [2021-06-11 09:35:04,448 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 385 places, 192 transitions, 861 flow [2021-06-11 09:35:04,449 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 385 places, 192 transitions, 861 flow [2021-06-11 09:35:04,476 INFO L129 PetriNetUnfolder]: 0/192 cut-off events. [2021-06-11 09:35:04,476 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:35:04,476 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. [2021-06-11 09:35:04,481 INFO L151 LiptonReduction]: Number of co-enabled transitions 18050 [2021-06-11 09:35:04,493 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:35:04,493 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:35:04,493 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 45 [2021-06-11 09:35:04,494 INFO L480 AbstractCegarLoop]: Abstraction has has 385 places, 192 transitions, 861 flow [2021-06-11 09:35:04,494 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) [2021-06-11 09:35:04,494 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:35:04,494 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] [2021-06-11 09:35:04,494 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2021-06-11 09:35:04,494 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:35:04,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:35:04,494 INFO L82 PathProgramCache]: Analyzing trace with hash -892477778, now seen corresponding path program 1 times [2021-06-11 09:35:04,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:35:04,494 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430235147] [2021-06-11 09:35:04,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:35:04,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:35:04,517 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:35:04,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:35:04,519 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:35:04,536 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:35:04,536 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:35:04,536 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2021-06-11 09:35:04,536 WARN L342 ceAbstractionStarter]: 95 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:35:04,536 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 96 thread instances. [2021-06-11 09:35:04,733 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:35:04,734 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 09:35:04,734 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:35:04,734 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:35:04,734 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:35:04,734 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:35:04,734 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:35:04,734 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:35:04,734 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:35:04,734 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:35:04,737 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 486 places, 293 transitions, 10186 flow [2021-06-11 09:35:04,876 INFO L129 PetriNetUnfolder]: 0/581 cut-off events. [2021-06-11 09:35:04,876 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:35:04,876 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. [2021-06-11 09:35:04,876 INFO L82 GeneralOperation]: Start removeDead. Operand has 486 places, 293 transitions, 10186 flow [2021-06-11 09:35:04,880 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 484 places, 291 transitions, 10182 flow [2021-06-11 09:35:04,880 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:35:04,880 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 484 places, 291 transitions, 10182 flow [2021-06-11 09:35:04,880 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 484 places, 291 transitions, 10182 flow [2021-06-11 09:35:04,882 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 484 places, 291 transitions, 10182 flow [2021-06-11 09:35:04,999 INFO L129 PetriNetUnfolder]: 0/387 cut-off events. [2021-06-11 09:35:04,999 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:35:04,999 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. [2021-06-11 09:35:05,044 INFO L151 LiptonReduction]: Number of co-enabled transitions 55488 Received shutdown request... [2021-06-11 09:35:26,405 WARN L222 SmtUtils]: Removed 1 from assertion stack [2021-06-11 09:35:26,406 WARN L545 AbstractCegarLoop]: Verification canceled [2021-06-11 09:35:26,408 WARN L224 ceAbstractionStarter]: Timeout [2021-06-11 09:35:26,408 INFO L202 PluginConnector]: Adding new model fork_loop_noop.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.06 09:35:26 BasicIcfg [2021-06-11 09:35:26,408 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-11 09:35:26,409 INFO L168 Benchmark]: Toolchain (without parser) took 804626.27 ms. Allocated memory was 375.4 MB in the beginning and 3.4 GB in the end (delta: 3.0 GB). Free memory was 355.1 MB in the beginning and 2.1 GB in the end (delta: -1.7 GB). Peak memory consumption was 2.5 GB. Max. memory is 16.0 GB. [2021-06-11 09:35:26,409 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.11 ms. Allocated memory is still 375.4 MB. Free memory was 356.1 MB in the beginning and 356.0 MB in the end (delta: 70.3 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-11 09:35:26,409 INFO L168 Benchmark]: Boogie Procedure Inliner took 18.30 ms. Allocated memory is still 375.4 MB. Free memory was 355.0 MB in the beginning and 353.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-11 09:35:26,409 INFO L168 Benchmark]: Boogie Preprocessor took 11.61 ms. Allocated memory is still 375.4 MB. Free memory was 353.5 MB in the beginning and 352.6 MB in the end (delta: 892.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-11 09:35:26,409 INFO L168 Benchmark]: RCFGBuilder took 125.31 ms. Allocated memory is still 375.4 MB. Free memory was 352.6 MB in the beginning and 344.6 MB in the end (delta: 8.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.0 GB. [2021-06-11 09:35:26,409 INFO L168 Benchmark]: TraceAbstraction took 804467.50 ms. Allocated memory was 375.4 MB in the beginning and 3.4 GB in the end (delta: 3.0 GB). Free memory was 344.1 MB in the beginning and 2.1 GB in the end (delta: -1.8 GB). Peak memory consumption was 2.4 GB. Max. memory is 16.0 GB. [2021-06-11 09:35:26,410 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 0.11 ms. Allocated memory is still 375.4 MB. Free memory was 356.1 MB in the beginning and 356.0 MB in the end (delta: 70.3 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 18.30 ms. Allocated memory is still 375.4 MB. Free memory was 355.0 MB in the beginning and 353.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 11.61 ms. Allocated memory is still 375.4 MB. Free memory was 353.5 MB in the beginning and 352.6 MB in the end (delta: 892.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 125.31 ms. Allocated memory is still 375.4 MB. Free memory was 352.6 MB in the beginning and 344.6 MB in the end (delta: 8.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.0 GB. * TraceAbstraction took 804467.50 ms. Allocated memory was 375.4 MB in the beginning and 3.4 GB in the end (delta: 3.0 GB). Free memory was 344.1 MB in the beginning and 2.1 GB in the end (delta: -1.8 GB). Peak memory consumption was 2.4 GB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 33.7ms, 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: 0, positive unconditional: 2, 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: 0, unknown unconditional: 2] , Statistics on independence cache: Total cache size (in pairs): 2, Positive cache size: 2, Positive conditional cache size: 0, Positive unconditional cache size: 2, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.4ms, 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): 2, Positive cache size: 2, Positive conditional cache size: 0, Positive unconditional cache size: 2, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 76.6ms, 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: 0, positive unconditional: 9, 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: 17, positive: 17, positive conditional: 0, positive unconditional: 17, 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: 0, unknown unconditional: 9] , Statistics on independence cache: Total cache size (in pairs): 11, Positive cache size: 11, Positive conditional cache size: 0, Positive unconditional cache size: 11, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.0ms, 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): 11, Positive cache size: 11, Positive conditional cache size: 0, Positive unconditional cache size: 11, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 59.5ms, 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: 0, positive unconditional: 21, 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: 31, positive: 31, positive conditional: 0, positive unconditional: 31, 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: 0, unknown unconditional: 21] , Statistics on independence cache: Total cache size (in pairs): 27, Positive cache size: 27, Positive conditional cache size: 0, Positive unconditional cache size: 27, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.8ms, 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): 27, Positive cache size: 27, Positive conditional cache size: 0, Positive unconditional cache size: 27, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 55.5ms, 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: 0, positive unconditional: 38, 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: 26, positive: 26, positive conditional: 0, positive unconditional: 26, 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: 0, unknown unconditional: 38] , Statistics on independence cache: Total cache size (in pairs): 50, Positive cache size: 50, Positive conditional cache size: 0, Positive unconditional cache size: 50, 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): 50, Positive cache size: 50, Positive conditional cache size: 0, Positive unconditional cache size: 50, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 93.4ms, 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: 0, positive unconditional: 60, 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: 49, positive: 49, positive conditional: 0, positive unconditional: 49, 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: 0, unknown unconditional: 60] , Statistics on independence cache: Total cache size (in pairs): 80, Positive cache size: 80, Positive conditional cache size: 0, Positive unconditional cache size: 80, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.9ms, 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): 80, Positive cache size: 80, Positive conditional cache size: 0, Positive unconditional cache size: 80, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 85.9ms, 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: 0, positive unconditional: 87, 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: 49, positive: 49, positive conditional: 0, positive unconditional: 49, 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: 0, unknown unconditional: 87] , Statistics on independence cache: Total cache size (in pairs): 117, Positive cache size: 117, Positive conditional cache size: 0, Positive unconditional cache size: 117, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.2ms, 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): 117, Positive cache size: 117, Positive conditional cache size: 0, Positive unconditional cache size: 117, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 116.4ms, 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: 0, positive unconditional: 119, 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: 75, positive: 75, positive conditional: 0, positive unconditional: 75, 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: 0, unknown unconditional: 119] , Statistics on independence cache: Total cache size (in pairs): 161, Positive cache size: 161, Positive conditional cache size: 0, Positive unconditional cache size: 161, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.8ms, 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): 161, Positive cache size: 161, Positive conditional cache size: 0, Positive unconditional cache size: 161, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 142.4ms, 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: 0, positive unconditional: 156, 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: 94, positive: 94, positive conditional: 0, positive unconditional: 94, 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: 0, unknown unconditional: 156] , Statistics on independence cache: Total cache size (in pairs): 212, Positive cache size: 212, Positive conditional cache size: 0, Positive unconditional cache size: 212, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.0ms, 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): 212, Positive cache size: 212, Positive conditional cache size: 0, Positive unconditional cache size: 212, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 159.9ms, 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: 0, positive unconditional: 198, 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: 108, positive: 108, positive conditional: 0, positive unconditional: 108, 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: 0, unknown unconditional: 198] , Statistics on independence cache: Total cache size (in pairs): 270, Positive cache size: 270, Positive conditional cache size: 0, Positive unconditional cache size: 270, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.0ms, 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): 270, Positive cache size: 270, Positive conditional cache size: 0, Positive unconditional cache size: 270, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 221.7ms, 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: 0, positive unconditional: 245, 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: 161, positive: 161, positive conditional: 0, positive unconditional: 161, 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: 0, unknown unconditional: 245] , Statistics on independence cache: Total cache size (in pairs): 335, Positive cache size: 335, Positive conditional cache size: 0, Positive unconditional cache size: 335, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.6ms, 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): 335, Positive cache size: 335, Positive conditional cache size: 0, Positive unconditional cache size: 335, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 256.7ms, 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: 0, positive unconditional: 297, 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: 190, positive: 190, positive conditional: 0, positive unconditional: 190, 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: 0, unknown unconditional: 297] , Statistics on independence cache: Total cache size (in pairs): 407, Positive cache size: 407, Positive conditional cache size: 0, Positive unconditional cache size: 407, 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): 407, Positive cache size: 407, Positive conditional cache size: 0, Positive unconditional cache size: 407, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 281.8ms, 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: 0, positive unconditional: 354, 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: 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] ], Cache Queries: [ total: 354, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 354, unknown conditional: 0, unknown unconditional: 354] , Statistics on independence cache: Total cache size (in pairs): 486, Positive cache size: 486, Positive conditional cache size: 0, Positive unconditional cache size: 486, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.0ms, 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): 486, Positive cache size: 486, Positive conditional cache size: 0, Positive unconditional cache size: 486, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 307.5ms, 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: 0, positive unconditional: 416, 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: 220, positive: 220, positive conditional: 0, positive unconditional: 220, 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: 0, unknown unconditional: 416] , Statistics on independence cache: Total cache size (in pairs): 572, Positive cache size: 572, Positive conditional cache size: 0, Positive unconditional cache size: 572, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.3ms, 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): 572, Positive cache size: 572, Positive conditional cache size: 0, Positive unconditional cache size: 572, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 380.8ms, 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: 0, positive unconditional: 483, 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: 289, positive: 289, positive conditional: 0, positive unconditional: 289, 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: 0, unknown unconditional: 483] , Statistics on independence cache: Total cache size (in pairs): 665, Positive cache size: 665, Positive conditional cache size: 0, Positive unconditional cache size: 665, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.1ms, 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): 665, Positive cache size: 665, Positive conditional cache size: 0, Positive unconditional cache size: 665, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 314.9ms, 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: 0, positive unconditional: 555, 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: 236, positive: 236, positive conditional: 0, positive unconditional: 236, 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: 0, unknown unconditional: 555] , Statistics on independence cache: Total cache size (in pairs): 765, Positive cache size: 765, Positive conditional cache size: 0, Positive unconditional cache size: 765, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.0ms, 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): 765, Positive cache size: 765, Positive conditional cache size: 0, Positive unconditional cache size: 765, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 377.5ms, 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: 0, positive unconditional: 632, 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: 294, positive: 294, positive conditional: 0, positive unconditional: 294, 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: 0, unknown unconditional: 632] , Statistics on independence cache: Total cache size (in pairs): 872, Positive cache size: 872, Positive conditional cache size: 0, Positive unconditional cache size: 872, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.4ms, 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): 872, Positive cache size: 872, Positive conditional cache size: 0, Positive unconditional cache size: 872, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 437.9ms, 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: 0, positive unconditional: 714, 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: 344, positive: 344, positive conditional: 0, positive unconditional: 344, 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: 0, unknown unconditional: 714] , Statistics on independence cache: Total cache size (in pairs): 986, Positive cache size: 986, Positive conditional cache size: 0, Positive unconditional cache size: 986, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.5ms, 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): 986, Positive cache size: 986, Positive conditional cache size: 0, Positive unconditional cache size: 986, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 502.8ms, 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: 0, positive unconditional: 801, 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: 405, positive: 405, positive conditional: 0, positive unconditional: 405, 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: 0, unknown unconditional: 801] , Statistics on independence cache: Total cache size (in pairs): 1107, Positive cache size: 1107, Positive conditional cache size: 0, Positive unconditional cache size: 1107, 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): 1107, Positive cache size: 1107, Positive conditional cache size: 0, Positive unconditional cache size: 1107, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 509.7ms, 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: 0, positive unconditional: 893, 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: 410, positive: 410, positive conditional: 0, positive unconditional: 410, 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: 0, unknown unconditional: 893] , Statistics on independence cache: Total cache size (in pairs): 1235, Positive cache size: 1235, Positive conditional cache size: 0, Positive unconditional cache size: 1235, 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): 1235, Positive cache size: 1235, Positive conditional cache size: 0, Positive unconditional cache size: 1235, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 595.2ms, 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: 0, positive unconditional: 990, 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: 482, positive: 482, positive conditional: 0, positive unconditional: 482, 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: 0, unknown unconditional: 990] , Statistics on independence cache: Total cache size (in pairs): 1370, Positive cache size: 1370, Positive conditional cache size: 0, Positive unconditional cache size: 1370, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.3ms, 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): 1370, Positive cache size: 1370, Positive conditional cache size: 0, Positive unconditional cache size: 1370, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 651.9ms, 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: 0, positive unconditional: 1092, 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: 539, positive: 539, positive conditional: 0, positive unconditional: 539, 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: 0, unknown unconditional: 1092] , Statistics on independence cache: Total cache size (in pairs): 1512, Positive cache size: 1512, Positive conditional cache size: 0, Positive unconditional cache size: 1512, 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): 1512, Positive cache size: 1512, Positive conditional cache size: 0, Positive unconditional cache size: 1512, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 719.6ms, 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: 0, positive unconditional: 1199, 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: 590, positive: 590, positive conditional: 0, positive unconditional: 590, 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: 0, unknown unconditional: 1199] , Statistics on independence cache: Total cache size (in pairs): 1661, Positive cache size: 1661, Positive conditional cache size: 0, Positive unconditional cache size: 1661, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.0ms, 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): 1661, Positive cache size: 1661, Positive conditional cache size: 0, Positive unconditional cache size: 1661, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 730.5ms, 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: 0, positive unconditional: 1311, 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: 598, positive: 598, positive conditional: 0, positive unconditional: 598, 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: 0, unknown unconditional: 1311] , Statistics on independence cache: Total cache size (in pairs): 1817, Positive cache size: 1817, Positive conditional cache size: 0, Positive unconditional cache size: 1817, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.5ms, 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): 1817, Positive cache size: 1817, Positive conditional cache size: 0, Positive unconditional cache size: 1817, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 791.1ms, 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: 0, positive unconditional: 1428, 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: 644, positive: 644, positive conditional: 0, positive unconditional: 644, 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: 0, unknown unconditional: 1428] , Statistics on independence cache: Total cache size (in pairs): 1980, Positive cache size: 1980, Positive conditional cache size: 0, Positive unconditional cache size: 1980, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.1ms, 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): 1980, Positive cache size: 1980, Positive conditional cache size: 0, Positive unconditional cache size: 1980, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 863.1ms, 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: 0, positive unconditional: 1550, 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: 674, positive: 674, positive conditional: 0, positive unconditional: 674, 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: 0, unknown unconditional: 1550] , Statistics on independence cache: Total cache size (in pairs): 2150, Positive cache size: 2150, Positive conditional cache size: 0, Positive unconditional cache size: 2150, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.4ms, 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): 2150, Positive cache size: 2150, Positive conditional cache size: 0, Positive unconditional cache size: 2150, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 987.3ms, 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: 0, positive unconditional: 1677, 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: 804, positive: 804, positive conditional: 0, positive unconditional: 804, 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: 0, unknown unconditional: 1677] , Statistics on independence cache: Total cache size (in pairs): 2327, Positive cache size: 2327, Positive conditional cache size: 0, Positive unconditional cache size: 2327, 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): 2327, Positive cache size: 2327, Positive conditional cache size: 0, Positive unconditional cache size: 2327, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 960.5ms, 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: 0, positive unconditional: 1809, 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: 815, positive: 815, positive conditional: 0, positive unconditional: 815, 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: 0, unknown unconditional: 1809] , Statistics on independence cache: Total cache size (in pairs): 2511, Positive cache size: 2511, Positive conditional cache size: 0, Positive unconditional cache size: 2511, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.8ms, 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): 2511, Positive cache size: 2511, Positive conditional cache size: 0, Positive unconditional cache size: 2511, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1097.7ms, 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: 0, positive unconditional: 1946, 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: 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] ], Cache Queries: [ total: 1946, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 1946, unknown conditional: 0, unknown unconditional: 1946] , Statistics on independence cache: Total cache size (in pairs): 2702, Positive cache size: 2702, Positive conditional cache size: 0, Positive unconditional cache size: 2702, 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): 2702, Positive cache size: 2702, Positive conditional cache size: 0, Positive unconditional cache size: 2702, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1102.7ms, 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: 0, positive unconditional: 2088, 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: 948, positive: 948, positive conditional: 0, positive unconditional: 948, 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: 0, unknown unconditional: 2088] , Statistics on independence cache: Total cache size (in pairs): 2900, Positive cache size: 2900, Positive conditional cache size: 0, Positive unconditional cache size: 2900, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.4ms, 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): 2900, Positive cache size: 2900, Positive conditional cache size: 0, Positive unconditional cache size: 2900, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1217.9ms, 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: 0, positive unconditional: 2235, 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: 1025, positive: 1025, positive conditional: 0, positive unconditional: 1025, 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: 0, unknown unconditional: 2235] , Statistics on independence cache: Total cache size (in pairs): 3105, Positive cache size: 3105, Positive conditional cache size: 0, Positive unconditional cache size: 3105, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.9ms, 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): 3105, Positive cache size: 3105, Positive conditional cache size: 0, Positive unconditional cache size: 3105, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1243.9ms, 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: 0, positive unconditional: 2387, 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: 1070, positive: 1070, positive conditional: 0, positive unconditional: 1070, 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: 0, unknown unconditional: 2387] , Statistics on independence cache: Total cache size (in pairs): 3317, Positive cache size: 3317, Positive conditional cache size: 0, Positive unconditional cache size: 3317, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.3ms, 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): 3317, Positive cache size: 3317, Positive conditional cache size: 0, Positive unconditional cache size: 3317, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1338.4ms, 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: 0, positive unconditional: 2544, 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: 1141, positive: 1141, positive conditional: 0, positive unconditional: 1141, 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: 0, unknown unconditional: 2544] , Statistics on independence cache: Total cache size (in pairs): 3536, Positive cache size: 3536, Positive conditional cache size: 0, Positive unconditional cache size: 3536, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.4ms, 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): 3536, Positive cache size: 3536, Positive conditional cache size: 0, Positive unconditional cache size: 3536, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1464.1ms, 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: 0, positive unconditional: 2706, 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: 1238, positive: 1238, positive conditional: 0, positive unconditional: 1238, 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: 0, unknown unconditional: 2706] , Statistics on independence cache: Total cache size (in pairs): 3762, Positive cache size: 3762, Positive conditional cache size: 0, Positive unconditional cache size: 3762, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.8ms, 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): 3762, Positive cache size: 3762, Positive conditional cache size: 0, Positive unconditional cache size: 3762, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1512.2ms, 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: 0, positive unconditional: 2873, 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: 1314, positive: 1314, positive conditional: 0, positive unconditional: 1314, 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: 0, unknown unconditional: 2873] , Statistics on independence cache: Total cache size (in pairs): 3995, Positive cache size: 3995, Positive conditional cache size: 0, Positive unconditional cache size: 3995, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8.1ms, 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): 3995, Positive cache size: 3995, Positive conditional cache size: 0, Positive unconditional cache size: 3995, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1670.0ms, 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: 0, positive unconditional: 3045, 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: 1451, positive: 1451, positive conditional: 0, positive unconditional: 1451, 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: 0, unknown unconditional: 3045] , Statistics on independence cache: Total cache size (in pairs): 4235, Positive cache size: 4235, Positive conditional cache size: 0, Positive unconditional cache size: 4235, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8.2ms, 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): 4235, Positive cache size: 4235, Positive conditional cache size: 0, Positive unconditional cache size: 4235, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1766.5ms, 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: 0, positive unconditional: 3222, 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: 1561, positive: 1561, positive conditional: 0, positive unconditional: 1561, 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: 0, unknown unconditional: 3222] , Statistics on independence cache: Total cache size (in pairs): 4482, Positive cache size: 4482, Positive conditional cache size: 0, Positive unconditional cache size: 4482, 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): 4482, Positive cache size: 4482, Positive conditional cache size: 0, Positive unconditional cache size: 4482, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1787.1ms, 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: 0, positive unconditional: 3404, 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: 1577, positive: 1577, positive conditional: 0, positive unconditional: 1577, 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: 0, unknown unconditional: 3404] , Statistics on independence cache: Total cache size (in pairs): 4736, Positive cache size: 4736, Positive conditional cache size: 0, Positive unconditional cache size: 4736, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 9.1ms, 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): 4736, Positive cache size: 4736, Positive conditional cache size: 0, Positive unconditional cache size: 4736, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1869.6ms, 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: 0, positive unconditional: 3591, 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: 1654, positive: 1654, positive conditional: 0, positive unconditional: 1654, 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: 0, unknown unconditional: 3591] , Statistics on independence cache: Total cache size (in pairs): 4997, Positive cache size: 4997, Positive conditional cache size: 0, Positive unconditional cache size: 4997, 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): 4997, Positive cache size: 4997, Positive conditional cache size: 0, Positive unconditional cache size: 4997, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2027.3ms, 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: 0, positive unconditional: 3783, 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: 1798, positive: 1798, positive conditional: 0, positive unconditional: 1798, 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: 0, unknown unconditional: 3783] , Statistics on independence cache: Total cache size (in pairs): 5265, Positive cache size: 5265, Positive conditional cache size: 0, Positive unconditional cache size: 5265, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 9.5ms, 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): 5265, Positive cache size: 5265, Positive conditional cache size: 0, Positive unconditional cache size: 5265, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2186.9ms, 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: 0, positive unconditional: 3980, 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: 1947, positive: 1947, positive conditional: 0, positive unconditional: 1947, 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: 0, unknown unconditional: 3980] , Statistics on independence cache: Total cache size (in pairs): 5540, Positive cache size: 5540, Positive conditional cache size: 0, Positive unconditional cache size: 5540, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 10.0ms, 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): 5540, Positive cache size: 5540, Positive conditional cache size: 0, Positive unconditional cache size: 5540, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2339.5ms, 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: 0, positive unconditional: 4182, 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: 2075, positive: 2075, positive conditional: 0, positive unconditional: 2075, 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: 0, unknown unconditional: 4182] , Statistics on independence cache: Total cache size (in pairs): 5822, Positive cache size: 5822, Positive conditional cache size: 0, Positive unconditional cache size: 5822, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 10.9ms, 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): 5822, Positive cache size: 5822, Positive conditional cache size: 0, Positive unconditional cache size: 5822, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2348.1ms, 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: 0, positive unconditional: 4389, 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: 2100, positive: 2100, positive conditional: 0, positive unconditional: 2100, 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: 0, unknown unconditional: 4389] , Statistics on independence cache: Total cache size (in pairs): 6111, Positive cache size: 6111, Positive conditional cache size: 0, Positive unconditional cache size: 6111, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 10.9ms, 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): 6111, Positive cache size: 6111, Positive conditional cache size: 0, Positive unconditional cache size: 6111, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2472.5ms, 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: 0, positive unconditional: 4601, 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: 2212, positive: 2212, positive conditional: 0, positive unconditional: 2212, 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: 0, unknown unconditional: 4601] , Statistics on independence cache: Total cache size (in pairs): 6407, Positive cache size: 6407, Positive conditional cache size: 0, Positive unconditional cache size: 6407, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 11.1ms, 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): 6407, Positive cache size: 6407, Positive conditional cache size: 0, Positive unconditional cache size: 6407, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2576.7ms, 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: 0, positive unconditional: 4818, 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: 2310, positive: 2310, positive conditional: 0, positive unconditional: 2310, 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: 0, unknown unconditional: 4818] , Statistics on independence cache: Total cache size (in pairs): 6710, Positive cache size: 6710, Positive conditional cache size: 0, Positive unconditional cache size: 6710, 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): 6710, Positive cache size: 6710, Positive conditional cache size: 0, Positive unconditional cache size: 6710, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2762.4ms, 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: 0, positive unconditional: 5040, 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: 2470, positive: 2470, positive conditional: 0, positive unconditional: 2470, 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: 0, unknown unconditional: 5040] , Statistics on independence cache: Total cache size (in pairs): 7020, Positive cache size: 7020, Positive conditional cache size: 0, Positive unconditional cache size: 7020, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 11.9ms, 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): 7020, Positive cache size: 7020, Positive conditional cache size: 0, Positive unconditional cache size: 7020, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2881.5ms, 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: 0, positive unconditional: 5267, 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: 2595, positive: 2595, positive conditional: 0, positive unconditional: 2595, 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: 0, unknown unconditional: 5267] , Statistics on independence cache: Total cache size (in pairs): 7337, Positive cache size: 7337, Positive conditional cache size: 0, Positive unconditional cache size: 7337, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 12.0ms, 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): 7337, Positive cache size: 7337, Positive conditional cache size: 0, Positive unconditional cache size: 7337, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3136.5ms, 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: 0, positive unconditional: 5499, 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: 2822, positive: 2822, positive conditional: 0, positive unconditional: 2822, 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: 0, unknown unconditional: 5499] , Statistics on independence cache: Total cache size (in pairs): 7661, Positive cache size: 7661, Positive conditional cache size: 0, Positive unconditional cache size: 7661, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 13.1ms, 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): 7661, Positive cache size: 7661, Positive conditional cache size: 0, Positive unconditional cache size: 7661, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3188.0ms, 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: 0, positive unconditional: 5736, 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: 2870, positive: 2870, positive conditional: 0, positive unconditional: 2870, 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: 0, unknown unconditional: 5736] , Statistics on independence cache: Total cache size (in pairs): 7992, Positive cache size: 7992, Positive conditional cache size: 0, Positive unconditional cache size: 7992, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 13.8ms, 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): 7992, Positive cache size: 7992, Positive conditional cache size: 0, Positive unconditional cache size: 7992, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3276.7ms, 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: 0, positive unconditional: 5978, 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: 2954, positive: 2954, positive conditional: 0, positive unconditional: 2954, 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: 0, unknown unconditional: 5978] , Statistics on independence cache: Total cache size (in pairs): 8330, Positive cache size: 8330, Positive conditional cache size: 0, Positive unconditional cache size: 8330, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 14.1ms, 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): 8330, Positive cache size: 8330, Positive conditional cache size: 0, Positive unconditional cache size: 8330, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3445.2ms, 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: 0, positive unconditional: 6225, 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: 3099, positive: 3099, positive conditional: 0, positive unconditional: 3099, 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: 0, unknown unconditional: 6225] , Statistics on independence cache: Total cache size (in pairs): 8675, Positive cache size: 8675, Positive conditional cache size: 0, Positive unconditional cache size: 8675, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 14.4ms, 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): 8675, Positive cache size: 8675, Positive conditional cache size: 0, Positive unconditional cache size: 8675, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3779.2ms, 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: 0, positive unconditional: 6477, 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: 3419, positive: 3419, positive conditional: 0, positive unconditional: 3419, 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: 0, unknown unconditional: 6477] , Statistics on independence cache: Total cache size (in pairs): 9027, Positive cache size: 9027, Positive conditional cache size: 0, Positive unconditional cache size: 9027, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 14.6ms, 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): 9027, Positive cache size: 9027, Positive conditional cache size: 0, Positive unconditional cache size: 9027, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3770.3ms, 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: 0, positive unconditional: 6734, 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: 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] ], Cache Queries: [ total: 6734, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 6734, unknown conditional: 0, unknown unconditional: 6734] , Statistics on independence cache: Total cache size (in pairs): 9386, Positive cache size: 9386, Positive conditional cache size: 0, Positive unconditional cache size: 9386, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 15.3ms, 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): 9386, Positive cache size: 9386, Positive conditional cache size: 0, Positive unconditional cache size: 9386, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3992.3ms, 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: 0, positive unconditional: 6996, 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: 3623, positive: 3623, positive conditional: 0, positive unconditional: 3623, 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: 0, unknown unconditional: 6996] , Statistics on independence cache: Total cache size (in pairs): 9752, Positive cache size: 9752, Positive conditional cache size: 0, Positive unconditional cache size: 9752, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 15.6ms, 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): 9752, Positive cache size: 9752, Positive conditional cache size: 0, Positive unconditional cache size: 9752, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4101.1ms, 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: 0, positive unconditional: 7263, 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: 3715, positive: 3715, positive conditional: 0, positive unconditional: 3715, 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: 0, unknown unconditional: 7263] , Statistics on independence cache: Total cache size (in pairs): 10125, Positive cache size: 10125, Positive conditional cache size: 0, Positive unconditional cache size: 10125, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 17.1ms, 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): 10125, Positive cache size: 10125, Positive conditional cache size: 0, Positive unconditional cache size: 10125, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4371.8ms, 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: 0, positive unconditional: 7535, 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: 3977, positive: 3977, positive conditional: 0, positive unconditional: 3977, 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: 0, unknown unconditional: 7535] , Statistics on independence cache: Total cache size (in pairs): 10505, Positive cache size: 10505, Positive conditional cache size: 0, Positive unconditional cache size: 10505, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 17.2ms, 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): 10505, Positive cache size: 10505, Positive conditional cache size: 0, Positive unconditional cache size: 10505, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4624.6ms, 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: 0, positive unconditional: 7812, 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: 4208, positive: 4208, positive conditional: 0, positive unconditional: 4208, 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: 0, unknown unconditional: 7812] , Statistics on independence cache: Total cache size (in pairs): 10892, Positive cache size: 10892, Positive conditional cache size: 0, Positive unconditional cache size: 10892, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 21.3ms, 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): 10892, Positive cache size: 10892, Positive conditional cache size: 0, Positive unconditional cache size: 10892, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4799.7ms, 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: 0, positive unconditional: 8094, 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: 4364, positive: 4364, positive conditional: 0, positive unconditional: 4364, 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: 0, unknown unconditional: 8094] , Statistics on independence cache: Total cache size (in pairs): 11286, Positive cache size: 11286, Positive conditional cache size: 0, Positive unconditional cache size: 11286, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 18.1ms, 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): 11286, Positive cache size: 11286, Positive conditional cache size: 0, Positive unconditional cache size: 11286, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4805.9ms, 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: 0, positive unconditional: 8381, 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: 4376, positive: 4376, positive conditional: 0, positive unconditional: 4376, 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: 0, unknown unconditional: 8381] , Statistics on independence cache: Total cache size (in pairs): 11687, Positive cache size: 11687, Positive conditional cache size: 0, Positive unconditional cache size: 11687, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 18.1ms, 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): 11687, Positive cache size: 11687, Positive conditional cache size: 0, Positive unconditional cache size: 11687, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5060.0ms, 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: 0, positive unconditional: 8673, 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: 4611, positive: 4611, positive conditional: 0, positive unconditional: 4611, 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: 0, unknown unconditional: 8673] , Statistics on independence cache: Total cache size (in pairs): 12095, Positive cache size: 12095, Positive conditional cache size: 0, Positive unconditional cache size: 12095, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 19.2ms, 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): 12095, Positive cache size: 12095, Positive conditional cache size: 0, Positive unconditional cache size: 12095, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5369.2ms, 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: 0, positive unconditional: 8970, 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: 4891, positive: 4891, positive conditional: 0, positive unconditional: 4891, 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: 0, unknown unconditional: 8970] , Statistics on independence cache: Total cache size (in pairs): 12510, Positive cache size: 12510, Positive conditional cache size: 0, Positive unconditional cache size: 12510, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 20.2ms, 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): 12510, Positive cache size: 12510, Positive conditional cache size: 0, Positive unconditional cache size: 12510, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5594.4ms, 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: 0, positive unconditional: 9272, 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: 5114, positive: 5114, positive conditional: 0, positive unconditional: 5114, 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: 0, unknown unconditional: 9272] , Statistics on independence cache: Total cache size (in pairs): 12932, Positive cache size: 12932, Positive conditional cache size: 0, Positive unconditional cache size: 12932, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 19.9ms, 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): 12932, Positive cache size: 12932, Positive conditional cache size: 0, Positive unconditional cache size: 12932, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5685.1ms, 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: 0, positive unconditional: 9579, 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: 5199, positive: 5199, positive conditional: 0, positive unconditional: 5199, 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: 0, unknown unconditional: 9579] , Statistics on independence cache: Total cache size (in pairs): 13361, Positive cache size: 13361, Positive conditional cache size: 0, Positive unconditional cache size: 13361, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 20.5ms, 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): 13361, Positive cache size: 13361, Positive conditional cache size: 0, Positive unconditional cache size: 13361, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6104.9ms, 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: 0, positive unconditional: 9891, 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: 5591, positive: 5591, positive conditional: 0, positive unconditional: 5591, 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: 0, unknown unconditional: 9891] , Statistics on independence cache: Total cache size (in pairs): 13797, Positive cache size: 13797, Positive conditional cache size: 0, Positive unconditional cache size: 13797, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 21.1ms, 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): 13797, Positive cache size: 13797, Positive conditional cache size: 0, Positive unconditional cache size: 13797, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6285.3ms, 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: 0, positive unconditional: 10208, 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: 5759, positive: 5759, positive conditional: 0, positive unconditional: 5759, 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: 0, unknown unconditional: 10208] , Statistics on independence cache: Total cache size (in pairs): 14240, Positive cache size: 14240, Positive conditional cache size: 0, Positive unconditional cache size: 14240, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 22.0ms, 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): 14240, Positive cache size: 14240, Positive conditional cache size: 0, Positive unconditional cache size: 14240, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6884.2ms, 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: 0, positive unconditional: 10530, 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: 6316, positive: 6316, positive conditional: 0, positive unconditional: 6316, 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: 0, unknown unconditional: 10530] , Statistics on independence cache: Total cache size (in pairs): 14690, Positive cache size: 14690, Positive conditional cache size: 0, Positive unconditional cache size: 14690, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 22.6ms, 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): 14690, Positive cache size: 14690, Positive conditional cache size: 0, Positive unconditional cache size: 14690, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7339.4ms, 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: 0, positive unconditional: 10857, 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: 6750, positive: 6750, positive conditional: 0, positive unconditional: 6750, 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: 0, unknown unconditional: 10857] , Statistics on independence cache: Total cache size (in pairs): 15147, Positive cache size: 15147, Positive conditional cache size: 0, Positive unconditional cache size: 15147, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 27.1ms, 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): 15147, Positive cache size: 15147, Positive conditional cache size: 0, Positive unconditional cache size: 15147, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7523.4ms, 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: 0, positive unconditional: 11189, 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: 6908, positive: 6908, positive conditional: 0, positive unconditional: 6908, 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: 0, unknown unconditional: 11189] , Statistics on independence cache: Total cache size (in pairs): 15611, Positive cache size: 15611, Positive conditional cache size: 0, Positive unconditional cache size: 15611, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 23.2ms, 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): 15611, Positive cache size: 15611, Positive conditional cache size: 0, Positive unconditional cache size: 15611, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7865.4ms, 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: 0, positive unconditional: 11526, 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: 7239, positive: 7239, positive conditional: 0, positive unconditional: 7239, 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: 0, unknown unconditional: 11526] , Statistics on independence cache: Total cache size (in pairs): 16082, Positive cache size: 16082, Positive conditional cache size: 0, Positive unconditional cache size: 16082, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 24.2ms, 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): 16082, Positive cache size: 16082, Positive conditional cache size: 0, Positive unconditional cache size: 16082, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8868.4ms, 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: 0, positive unconditional: 11868, 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: 8164, positive: 8164, positive conditional: 0, positive unconditional: 8164, 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: 0, unknown unconditional: 11868] , Statistics on independence cache: Total cache size (in pairs): 16560, Positive cache size: 16560, Positive conditional cache size: 0, Positive unconditional cache size: 16560, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 25.6ms, 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): 16560, Positive cache size: 16560, Positive conditional cache size: 0, Positive unconditional cache size: 16560, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 9624.1ms, 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: 0, positive unconditional: 12215, 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: 8883, positive: 8883, positive conditional: 0, positive unconditional: 8883, 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: 0, unknown unconditional: 12215] , Statistics on independence cache: Total cache size (in pairs): 17045, Positive cache size: 17045, Positive conditional cache size: 0, Positive unconditional cache size: 17045, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 41.3ms, 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): 17045, Positive cache size: 17045, Positive conditional cache size: 0, Positive unconditional cache size: 17045, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 10262.7ms, 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: 0, positive unconditional: 12567, 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: 9471, positive: 9471, positive conditional: 0, positive unconditional: 9471, 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: 0, unknown unconditional: 12567] , Statistics on independence cache: Total cache size (in pairs): 17537, Positive cache size: 17537, Positive conditional cache size: 0, Positive unconditional cache size: 17537, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 46.8ms, 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): 17537, Positive cache size: 17537, Positive conditional cache size: 0, Positive unconditional cache size: 17537, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 10570.6ms, 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: 0, positive unconditional: 12924, 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: 9705, positive: 9705, positive conditional: 0, positive unconditional: 9705, 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: 0, unknown unconditional: 12924] , Statistics on independence cache: Total cache size (in pairs): 18036, Positive cache size: 18036, Positive conditional cache size: 0, Positive unconditional cache size: 18036, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 27.3ms, 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): 18036, Positive cache size: 18036, Positive conditional cache size: 0, Positive unconditional cache size: 18036, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 10872.5ms, 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: 0, positive unconditional: 13286, 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: 10052, positive: 10052, positive conditional: 0, positive unconditional: 10052, 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: 0, unknown unconditional: 13286] , Statistics on independence cache: Total cache size (in pairs): 18542, Positive cache size: 18542, Positive conditional cache size: 0, Positive unconditional cache size: 18542, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 29.3ms, 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): 18542, Positive cache size: 18542, Positive conditional cache size: 0, Positive unconditional cache size: 18542, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 11409.2ms, 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: 0, positive unconditional: 13653, 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: 10554, positive: 10554, positive conditional: 0, positive unconditional: 10554, 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: 0, unknown unconditional: 13653] , Statistics on independence cache: Total cache size (in pairs): 19055, Positive cache size: 19055, Positive conditional cache size: 0, Positive unconditional cache size: 19055, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 28.2ms, 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): 19055, Positive cache size: 19055, Positive conditional cache size: 0, Positive unconditional cache size: 19055, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 11920.5ms, 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: 0, positive unconditional: 14025, 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: 11014, positive: 11014, positive conditional: 0, positive unconditional: 11014, 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: 0, unknown unconditional: 14025] , Statistics on independence cache: Total cache size (in pairs): 19575, Positive cache size: 19575, Positive conditional cache size: 0, Positive unconditional cache size: 19575, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 28.7ms, 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): 19575, Positive cache size: 19575, Positive conditional cache size: 0, Positive unconditional cache size: 19575, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 13024.7ms, 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: 0, positive unconditional: 14402, 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: 12021, positive: 12021, positive conditional: 0, positive unconditional: 12021, 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: 0, unknown unconditional: 14402] , Statistics on independence cache: Total cache size (in pairs): 20102, Positive cache size: 20102, Positive conditional cache size: 0, Positive unconditional cache size: 20102, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 29.8ms, 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): 20102, Positive cache size: 20102, Positive conditional cache size: 0, Positive unconditional cache size: 20102, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 13299.6ms, 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: 0, positive unconditional: 14784, 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: 12301, positive: 12301, positive conditional: 0, positive unconditional: 12301, 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: 0, unknown unconditional: 14784] , Statistics on independence cache: Total cache size (in pairs): 20636, Positive cache size: 20636, Positive conditional cache size: 0, Positive unconditional cache size: 20636, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 30.0ms, 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): 20636, Positive cache size: 20636, Positive conditional cache size: 0, Positive unconditional cache size: 20636, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 15009.3ms, 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: 0, positive unconditional: 15171, 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: 13555, positive: 13555, positive conditional: 0, positive unconditional: 13555, 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: 0, unknown unconditional: 15171] , Statistics on independence cache: Total cache size (in pairs): 21177, Positive cache size: 21177, Positive conditional cache size: 0, Positive unconditional cache size: 21177, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 30.5ms, 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): 21177, Positive cache size: 21177, Positive conditional cache size: 0, Positive unconditional cache size: 21177, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 16123.4ms, 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: 0, positive unconditional: 15563, 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: 14936, positive: 14936, positive conditional: 0, positive unconditional: 14936, 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: 0, unknown unconditional: 15563] , Statistics on independence cache: Total cache size (in pairs): 21725, Positive cache size: 21725, Positive conditional cache size: 0, Positive unconditional cache size: 21725, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 31.5ms, 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): 21725, Positive cache size: 21725, Positive conditional cache size: 0, Positive unconditional cache size: 21725, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 17417.8ms, 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: 0, positive unconditional: 15960, 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: 16119, positive: 16119, positive conditional: 0, positive unconditional: 16119, 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: 0, unknown unconditional: 15960] , Statistics on independence cache: Total cache size (in pairs): 22280, Positive cache size: 22280, Positive conditional cache size: 0, Positive unconditional cache size: 22280, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 32.4ms, 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): 22280, Positive cache size: 22280, Positive conditional cache size: 0, Positive unconditional cache size: 22280, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 17880.5ms, 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: 0, positive unconditional: 16362, 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: 16562, positive: 16562, positive conditional: 0, positive unconditional: 16562, 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: 0, unknown unconditional: 16362] , Statistics on independence cache: Total cache size (in pairs): 22842, Positive cache size: 22842, Positive conditional cache size: 0, Positive unconditional cache size: 22842, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 32.7ms, 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): 22842, Positive cache size: 22842, Positive conditional cache size: 0, Positive unconditional cache size: 22842, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 18098.3ms, 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: 0, positive unconditional: 16769, 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: 16780, positive: 16780, positive conditional: 0, positive unconditional: 16780, 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: 0, unknown unconditional: 16769] , Statistics on independence cache: Total cache size (in pairs): 23411, Positive cache size: 23411, Positive conditional cache size: 0, Positive unconditional cache size: 23411, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 34.5ms, 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): 23411, Positive cache size: 23411, Positive conditional cache size: 0, Positive unconditional cache size: 23411, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 19404.8ms, 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: 0, positive unconditional: 17181, 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: 17951, positive: 17951, positive conditional: 0, positive unconditional: 17951, 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: 0, unknown unconditional: 17181] , Statistics on independence cache: Total cache size (in pairs): 23987, Positive cache size: 23987, Positive conditional cache size: 0, Positive unconditional cache size: 23987, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 35.4ms, 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): 23987, Positive cache size: 23987, Positive conditional cache size: 0, Positive unconditional cache size: 23987, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 21463.8ms, 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: 0, positive unconditional: 17598, 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: 19934, positive: 19934, positive conditional: 0, positive unconditional: 19934, 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: 0, unknown unconditional: 17598] , Statistics on independence cache: Total cache size (in pairs): 24570, Positive cache size: 24570, Positive conditional cache size: 0, Positive unconditional cache size: 24570, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 35.4ms, 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): 24570, Positive cache size: 24570, Positive conditional cache size: 0, Positive unconditional cache size: 24570, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 22655.7ms, 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: 0, positive unconditional: 18020, 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: 21034, positive: 21034, positive conditional: 0, positive unconditional: 21034, 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: 0, unknown unconditional: 18020] , Statistics on independence cache: Total cache size (in pairs): 25160, Positive cache size: 25160, Positive conditional cache size: 0, Positive unconditional cache size: 25160, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 36.5ms, 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): 25160, Positive cache size: 25160, Positive conditional cache size: 0, Positive unconditional cache size: 25160, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 24916.9ms, 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: 0, positive unconditional: 18447, 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: 23145, positive: 23145, positive conditional: 0, positive unconditional: 23145, 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: 0, unknown unconditional: 18447] , Statistics on independence cache: Total cache size (in pairs): 25757, Positive cache size: 25757, Positive conditional cache size: 0, Positive unconditional cache size: 25757, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 37.3ms, 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): 25757, Positive cache size: 25757, Positive conditional cache size: 0, Positive unconditional cache size: 25757, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 26915.7ms, 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: 0, positive unconditional: 18879, 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: 24801, positive: 24801, positive conditional: 0, positive unconditional: 24801, 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: 0, unknown unconditional: 18879] , Statistics on independence cache: Total cache size (in pairs): 26361, Positive cache size: 26361, Positive conditional cache size: 0, Positive unconditional cache size: 26361, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 38.4ms, 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): 26361, Positive cache size: 26361, Positive conditional cache size: 0, Positive unconditional cache size: 26361, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 30284.7ms, 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: 0, positive unconditional: 19316, 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: 28118, positive: 28118, positive conditional: 0, positive unconditional: 28118, 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: 0, unknown unconditional: 19316] , Statistics on independence cache: Total cache size (in pairs): 26972, Positive cache size: 26972, Positive conditional cache size: 0, Positive unconditional cache size: 26972, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 39.2ms, 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): 26972, Positive cache size: 26972, Positive conditional cache size: 0, Positive unconditional cache size: 26972, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 33359.7ms, 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: 0, positive unconditional: 19758, 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: 30857, positive: 30857, positive conditional: 0, positive unconditional: 30857, 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: 0, unknown unconditional: 19758] , Statistics on independence cache: Total cache size (in pairs): 27590, Positive cache size: 27590, Positive conditional cache size: 0, Positive unconditional cache size: 27590, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 39.0ms, 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): 27590, Positive cache size: 27590, Positive conditional cache size: 0, Positive unconditional cache size: 27590, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 34497.7ms, 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: 0, positive unconditional: 20205, 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: 32052, positive: 32052, positive conditional: 0, positive unconditional: 32052, 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: 0, unknown unconditional: 20205] , Statistics on independence cache: Total cache size (in pairs): 28215, Positive cache size: 28215, Positive conditional cache size: 0, Positive unconditional cache size: 28215, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 40.1ms, 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): 28215, Positive cache size: 28215, Positive conditional cache size: 0, Positive unconditional cache size: 28215, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 36642.6ms, 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: 0, positive unconditional: 20657, 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: 34080, positive: 34080, positive conditional: 0, positive unconditional: 34080, 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: 0, unknown unconditional: 20657] , Statistics on independence cache: Total cache size (in pairs): 28847, Positive cache size: 28847, Positive conditional cache size: 0, Positive unconditional cache size: 28847, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 40.7ms, 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): 28847, Positive cache size: 28847, Positive conditional cache size: 0, Positive unconditional cache size: 28847, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 38949.1ms, 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: 0, positive unconditional: 21114, 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: 36224, positive: 36224, positive conditional: 0, positive unconditional: 36224, 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: 0, unknown unconditional: 21114] , Statistics on independence cache: Total cache size (in pairs): 29486, Positive cache size: 29486, Positive conditional cache size: 0, Positive unconditional cache size: 29486, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 42.0ms, 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): 29486, Positive cache size: 29486, Positive conditional cache size: 0, Positive unconditional cache size: 29486, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 40325.8ms, 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: 0, positive unconditional: 21576, 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: 37526, positive: 37526, positive conditional: 0, positive unconditional: 37526, 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: 0, unknown unconditional: 21576] , Statistics on independence cache: Total cache size (in pairs): 30132, Positive cache size: 30132, Positive conditional cache size: 0, Positive unconditional cache size: 30132, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 43.2ms, 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): 30132, Positive cache size: 30132, Positive conditional cache size: 0, Positive unconditional cache size: 30132, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 41729.6ms, 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: 0, positive unconditional: 22043, 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: 38840, positive: 38840, positive conditional: 0, positive unconditional: 38840, 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: 0, unknown unconditional: 22043] , Statistics on independence cache: Total cache size (in pairs): 30785, Positive cache size: 30785, Positive conditional cache size: 0, Positive unconditional cache size: 30785, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 43.1ms, 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): 30785, Positive cache size: 30785, Positive conditional cache size: 0, Positive unconditional cache size: 30785, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 45654.7ms, 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: 0, positive unconditional: 22515, 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: 42341, positive: 42341, positive conditional: 0, positive unconditional: 42341, 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: 0, unknown unconditional: 22515] , Statistics on independence cache: Total cache size (in pairs): 31445, Positive cache size: 31445, Positive conditional cache size: 0, Positive unconditional cache size: 31445, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 44.9ms, 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): 31445, Positive cache size: 31445, Positive conditional cache size: 0, Positive unconditional cache size: 31445, 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 484 places, 291 transitions, 10182 flow,while LiptonReduction was applying LiptonReduction to Petri net that has 484 places, 291 transitions, 10182 flow and 55488 co-enabled transitions pairs.,while TransFormulaUtils was doing sequential composition of 2 TransFormulas,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 0ms.. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 8 locations, 1 error locations. Started 96 CEGAR loops. EmptinessCheckTime: 50.2ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 799199.6ms, OverallIterations: 190, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 8314.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 785428.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 95 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 95 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 269.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=9791occurred in iteration=0, InterpolantAutomatonStates: 285, 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: 68.2ms SsaConstructionTime, 199.2ms SatisfiabilityAnalysisTime, 616.1ms InterpolantComputationTime, 4940 NumberOfCodeBlocks, 4940 NumberOfCodeBlocksAsserted, 190 NumberOfCheckSat, 95 ConstructedInterpolants, 0 QuantifiedInterpolants, 285 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 95 InterpolantComputations, 95 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