/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-RepeatedSemanticLbeWithDisjunctivePredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/regression/example_interleaving.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-0e22065b97d0a1f8b3904e080cebe0f05e88d2b7-0e22065 [2021-06-11 18:53:31,104 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-11 18:53:31,107 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-11 18:53:31,145 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-11 18:53:31,164 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-11 18:53:31,166 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-11 18:53:31,167 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-11 18:53:31,168 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-11 18:53:31,170 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-11 18:53:31,171 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-11 18:53:31,173 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-11 18:53:31,178 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-11 18:53:31,179 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-11 18:53:31,180 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-11 18:53:31,181 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-11 18:53:31,183 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-11 18:53:31,188 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-11 18:53:31,201 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-RepeatedSemanticLbeWithDisjunctivePredicates.epf [2021-06-11 18:53:31,227 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-11 18:53:31,227 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-11 18:53:31,228 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-11 18:53:31,228 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-11 18:53:31,228 INFO L138 SettingsManager]: * Use SBE=true [2021-06-11 18:53:31,228 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-11 18:53:31,229 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-11 18:53:31,229 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-11 18:53:31,229 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-11 18:53:31,229 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-11 18:53:31,229 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-11 18:53:31,229 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-11 18:53:31,229 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-11 18:53:31,230 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-11 18:53:31,230 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-11 18:53:31,230 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-11 18:53:31,230 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-11 18:53:31,230 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-11 18:53:31,230 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-11 18:53:31,231 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-11 18:53:31,231 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-11 18:53:31,231 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-11 18:53:31,231 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-11 18:53:31,231 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-11 18:53:31,232 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-11 18:53:31,232 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-11 18:53:31,232 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-11 18:53:31,232 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES_DISJUNCTIVE [2021-06-11 18:53:31,232 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-11 18:53:31,232 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-06-11 18:53:31,232 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-11 18:53:31,527 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-11 18:53:31,547 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-11 18:53:31,550 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-11 18:53:31,551 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-11 18:53:31,553 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-11 18:53:31,554 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/example_interleaving.bpl [2021-06-11 18:53:31,555 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/example_interleaving.bpl' [2021-06-11 18:53:31,589 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-11 18:53:31,591 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-11 18:53:31,592 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-11 18:53:31,593 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-11 18:53:31,593 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-11 18:53:31,610 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_interleaving.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 06:53:31" (1/1) ... [2021-06-11 18:53:31,616 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_interleaving.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 06:53:31" (1/1) ... [2021-06-11 18:53:31,624 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-11 18:53:31,626 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-11 18:53:31,626 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-11 18:53:31,626 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-11 18:53:31,633 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_interleaving.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 06:53:31" (1/1) ... [2021-06-11 18:53:31,634 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_interleaving.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 06:53:31" (1/1) ... [2021-06-11 18:53:31,634 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_interleaving.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 06:53:31" (1/1) ... [2021-06-11 18:53:31,635 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_interleaving.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 06:53:31" (1/1) ... [2021-06-11 18:53:31,637 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_interleaving.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 06:53:31" (1/1) ... [2021-06-11 18:53:31,638 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_interleaving.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 06:53:31" (1/1) ... [2021-06-11 18:53:31,638 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_interleaving.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 06:53:31" (1/1) ... [2021-06-11 18:53:31,639 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-11 18:53:31,640 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-11 18:53:31,640 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-11 18:53:31,641 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-11 18:53:31,642 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_interleaving.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 06:53:31" (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 18:53:31,709 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_y given in one single declaration [2021-06-11 18:53:31,710 INFO L130 BoogieDeclarations]: Found specification of procedure set_y [2021-06-11 18:53:31,710 INFO L138 BoogieDeclarations]: Found implementation of procedure set_y [2021-06-11 18:53:31,711 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_z given in one single declaration [2021-06-11 18:53:31,711 INFO L130 BoogieDeclarations]: Found specification of procedure set_z [2021-06-11 18:53:31,711 INFO L138 BoogieDeclarations]: Found implementation of procedure set_z [2021-06-11 18:53:31,711 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-11 18:53:31,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-11 18:53:31,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-11 18:53:31,711 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_x given in one single declaration [2021-06-11 18:53:31,711 INFO L130 BoogieDeclarations]: Found specification of procedure set_x [2021-06-11 18:53:31,711 INFO L138 BoogieDeclarations]: Found implementation of procedure set_x [2021-06-11 18:53:31,712 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 18:53:31,859 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-11 18:53:31,859 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-11 18:53:31,861 INFO L202 PluginConnector]: Adding new model example_interleaving.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.06 06:53:31 BoogieIcfgContainer [2021-06-11 18:53:31,861 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-11 18:53:31,864 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-11 18:53:31,864 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-11 18:53:31,867 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-11 18:53:31,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_interleaving.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 06:53:31" (1/2) ... [2021-06-11 18:53:31,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25e9229d and model type example_interleaving.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.06 06:53:31, skipping insertion in model container [2021-06-11 18:53:31,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_interleaving.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.06 06:53:31" (2/2) ... [2021-06-11 18:53:31,870 INFO L111 eAbstractionObserver]: Analyzing ICFG example_interleaving.bpl [2021-06-11 18:53:31,878 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-11 18:53:31,881 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-06-11 18:53:31,883 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-11 18:53:31,957 INFO L149 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2021-06-11 18:53:31,973 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-11 18:53:32,008 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 18:53:32,009 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 18:53:32,009 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 18:53:32,009 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 18:53:32,009 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 18:53:32,009 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 18:53:32,009 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 18:53:32,010 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 18:53:32,022 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 28 places, 24 transitions, 90 flow [2021-06-11 18:53:32,051 INFO L129 PetriNetUnfolder]: 5/24 cut-off events. [2021-06-11 18:53:32,051 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2021-06-11 18:53:32,054 INFO L84 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 24 events. 5/24 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 31 event pairs, 0 based on Foata normal form. 0/23 useless extension candidates. Maximal degree in co-relation 20. Up to 6 conditions per place. [2021-06-11 18:53:32,055 INFO L82 GeneralOperation]: Start removeDead. Operand has 28 places, 24 transitions, 90 flow [2021-06-11 18:53:32,059 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 23 places, 19 transitions, 74 flow [2021-06-11 18:53:32,060 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 18:53:32,091 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 23 places, 19 transitions, 74 flow [2021-06-11 18:53:32,100 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 23 places, 19 transitions, 74 flow [2021-06-11 18:53:32,102 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 23 places, 19 transitions, 74 flow [2021-06-11 18:53:32,112 INFO L129 PetriNetUnfolder]: 5/22 cut-off events. [2021-06-11 18:53:32,113 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2021-06-11 18:53:32,114 INFO L84 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 22 events. 5/22 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 37 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 20. Up to 6 conditions per place. [2021-06-11 18:53:32,116 INFO L151 LiptonReduction]: Number of co-enabled transitions 84 [2021-06-11 18:53:32,228 INFO L163 LiptonReduction]: Checked pairs total: 27 [2021-06-11 18:53:32,229 INFO L165 LiptonReduction]: Total number of compositions: 3 [2021-06-11 18:53:32,230 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 171 [2021-06-11 18:53:32,243 INFO L129 PetriNetUnfolder]: 5/18 cut-off events. [2021-06-11 18:53:32,243 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2021-06-11 18:53:32,244 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 18:53:32,244 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 18:53:32,244 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 18:53:32,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 18:53:32,249 INFO L82 PathProgramCache]: Analyzing trace with hash -1362867, now seen corresponding path program 1 times [2021-06-11 18:53:32,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 18:53:32,256 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686290471] [2021-06-11 18:53:32,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 18:53:32,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 18:53:32,352 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 18:53:32,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 18:53:32,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 18:53:32,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 18:53:32,382 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 18:53:32,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 18:53:32,385 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 18:53:32,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686290471] [2021-06-11 18:53:32,386 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 18:53:32,386 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 18:53:32,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012257412] [2021-06-11 18:53:32,395 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 18:53:32,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 18:53:32,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 18:53:32,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 18:53:32,412 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 27 [2021-06-11 18:53:32,413 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 16 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 18:53:32,414 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 18:53:32,414 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 27 [2021-06-11 18:53:32,415 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 18:53:32,438 INFO L129 PetriNetUnfolder]: 1/12 cut-off events. [2021-06-11 18:53:32,439 INFO L130 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2021-06-11 18:53:32,439 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 12 events. 1/12 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 7 event pairs, 0 based on Foata normal form. 3/15 useless extension candidates. Maximal degree in co-relation 11. Up to 3 conditions per place. [2021-06-11 18:53:32,440 INFO L132 encePairwiseOnDemand]: 24/27 looper letters, 1 selfloop transitions, 1 changer transitions 0/12 dead transitions. [2021-06-11 18:53:32,440 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 12 transitions, 52 flow [2021-06-11 18:53:32,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 18:53:32,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 18:53:32,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 73 transitions. [2021-06-11 18:53:32,451 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9012345679012346 [2021-06-11 18:53:32,451 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 73 transitions. [2021-06-11 18:53:32,452 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 73 transitions. [2021-06-11 18:53:32,453 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 18:53:32,454 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 73 transitions. [2021-06-11 18:53:32,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 18:53:32,462 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 18:53:32,462 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 18:53:32,464 INFO L185 Difference]: Start difference. First operand has 20 places, 16 transitions, 68 flow. Second operand 3 states and 73 transitions. [2021-06-11 18:53:32,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 12 transitions, 52 flow [2021-06-11 18:53:32,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 12 transitions, 36 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-06-11 18:53:32,468 INFO L241 Difference]: Finished difference. Result has 16 places, 12 transitions, 34 flow [2021-06-11 18:53:32,469 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=14, 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=34, PETRI_PLACES=16, PETRI_TRANSITIONS=12} [2021-06-11 18:53:32,471 INFO L343 CegarLoopForPetriNet]: 20 programPoint places, -4 predicate places. [2021-06-11 18:53:32,471 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 18:53:32,471 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 16 places, 12 transitions, 34 flow [2021-06-11 18:53:32,472 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 16 places, 12 transitions, 34 flow [2021-06-11 18:53:32,472 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 16 places, 12 transitions, 34 flow [2021-06-11 18:53:32,484 INFO L129 PetriNetUnfolder]: 1/12 cut-off events. [2021-06-11 18:53:32,484 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 18:53:32,485 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18 conditions, 12 events. 1/12 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 11 event pairs, 0 based on Foata normal form. 0/12 useless extension candidates. Maximal degree in co-relation 9. Up to 2 conditions per place. [2021-06-11 18:53:32,485 INFO L151 LiptonReduction]: Number of co-enabled transitions 24 [2021-06-11 18:53:32,487 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 18:53:32,487 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 18:53:32,487 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 16 [2021-06-11 18:53:32,490 INFO L480 AbstractCegarLoop]: Abstraction has has 16 places, 12 transitions, 34 flow [2021-06-11 18:53:32,490 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 18:53:32,490 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 18:53:32,490 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 18:53:32,491 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-11 18:53:32,491 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 18:53:32,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 18:53:32,492 INFO L82 PathProgramCache]: Analyzing trace with hash 893456225, now seen corresponding path program 1 times [2021-06-11 18:53:32,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 18:53:32,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455960024] [2021-06-11 18:53:32,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 18:53:32,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 18:53:32,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 18:53:32,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 18:53:32,516 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 18:53:32,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 18:53:32,520 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 18:53:32,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 18:53:32,520 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 18:53:32,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455960024] [2021-06-11 18:53:32,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 18:53:32,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 18:53:32,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483670967] [2021-06-11 18:53:32,522 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 18:53:32,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 18:53:32,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 18:53:32,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 18:53:32,523 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 27 [2021-06-11 18:53:32,523 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 16 places, 12 transitions, 34 flow. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 18:53:32,523 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 18:53:32,524 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 27 [2021-06-11 18:53:32,524 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 18:53:32,528 INFO L129 PetriNetUnfolder]: 0/10 cut-off events. [2021-06-11 18:53:32,528 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-06-11 18:53:32,528 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19 conditions, 10 events. 0/10 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 5 event pairs, 0 based on Foata normal form. 1/11 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-06-11 18:53:32,528 INFO L132 encePairwiseOnDemand]: 25/27 looper letters, 1 selfloop transitions, 1 changer transitions 0/10 dead transitions. [2021-06-11 18:53:32,528 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 10 transitions, 32 flow [2021-06-11 18:53:32,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 18:53:32,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 18:53:32,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 72 transitions. [2021-06-11 18:53:32,530 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8888888888888888 [2021-06-11 18:53:32,530 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 72 transitions. [2021-06-11 18:53:32,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 72 transitions. [2021-06-11 18:53:32,530 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 18:53:32,531 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 72 transitions. [2021-06-11 18:53:32,531 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 18:53:32,532 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 18:53:32,532 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 18:53:32,532 INFO L185 Difference]: Start difference. First operand has 16 places, 12 transitions, 34 flow. Second operand 3 states and 72 transitions. [2021-06-11 18:53:32,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 10 transitions, 32 flow [2021-06-11 18:53:32,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 10 transitions, 31 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-11 18:53:32,533 INFO L241 Difference]: Finished difference. Result has 17 places, 10 transitions, 29 flow [2021-06-11 18:53:32,534 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=27, PETRI_DIFFERENCE_MINUEND_PLACES=15, 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=29, PETRI_PLACES=17, PETRI_TRANSITIONS=10} [2021-06-11 18:53:32,534 INFO L343 CegarLoopForPetriNet]: 20 programPoint places, -3 predicate places. [2021-06-11 18:53:32,534 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 18:53:32,535 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 17 places, 10 transitions, 29 flow [2021-06-11 18:53:32,535 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 17 places, 10 transitions, 29 flow [2021-06-11 18:53:32,535 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 17 places, 10 transitions, 29 flow [2021-06-11 18:53:32,538 INFO L129 PetriNetUnfolder]: 0/10 cut-off events. [2021-06-11 18:53:32,538 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 18:53:32,538 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17 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 5 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2021-06-11 18:53:32,538 INFO L151 LiptonReduction]: Number of co-enabled transitions 18 [2021-06-11 18:53:32,539 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 18:53:32,539 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 18:53:32,539 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 5 [2021-06-11 18:53:32,540 INFO L480 AbstractCegarLoop]: Abstraction has has 17 places, 10 transitions, 29 flow [2021-06-11 18:53:32,540 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 18:53:32,540 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 18:53:32,541 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 18:53:32,541 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-11 18:53:32,541 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 18:53:32,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 18:53:32,541 INFO L82 PathProgramCache]: Analyzing trace with hash 902364695, now seen corresponding path program 1 times [2021-06-11 18:53:32,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 18:53:32,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885434006] [2021-06-11 18:53:32,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 18:53:32,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 18:53:32,572 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 18:53:32,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 18:53:32,580 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 18:53:32,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 18:53:32,598 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 18:53:32,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 18:53:32,615 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-06-11 18:53:32,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 18:53:32,628 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 18:53:32,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885434006] [2021-06-11 18:53:32,628 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 18:53:32,628 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-11 18:53:32,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201514151] [2021-06-11 18:53:32,629 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-11 18:53:32,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 18:53:32,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-11 18:53:32,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-06-11 18:53:32,630 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 27 [2021-06-11 18:53:32,631 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 10 transitions, 29 flow. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 18:53:32,631 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 18:53:32,631 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 27 [2021-06-11 18:53:32,631 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 18:53:32,664 INFO L129 PetriNetUnfolder]: 3/27 cut-off events. [2021-06-11 18:53:32,665 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 18:53:32,665 INFO L84 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 27 events. 3/27 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 58 event pairs, 1 based on Foata normal form. 1/26 useless extension candidates. Maximal degree in co-relation 42. Up to 7 conditions per place. [2021-06-11 18:53:32,665 INFO L132 encePairwiseOnDemand]: 23/27 looper letters, 5 selfloop transitions, 2 changer transitions 1/14 dead transitions. [2021-06-11 18:53:32,665 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 14 transitions, 53 flow [2021-06-11 18:53:32,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-11 18:53:32,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-11 18:53:32,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 104 transitions. [2021-06-11 18:53:32,667 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7703703703703704 [2021-06-11 18:53:32,667 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 104 transitions. [2021-06-11 18:53:32,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 104 transitions. [2021-06-11 18:53:32,667 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 18:53:32,668 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 104 transitions. [2021-06-11 18:53:32,668 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 20.8) internal successors, (104), 5 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 18:53:32,669 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 27.0) internal successors, (162), 6 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 18:53:32,669 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 27.0) internal successors, (162), 6 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 18:53:32,670 INFO L185 Difference]: Start difference. First operand has 17 places, 10 transitions, 29 flow. Second operand 5 states and 104 transitions. [2021-06-11 18:53:32,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 14 transitions, 53 flow [2021-06-11 18:53:32,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 14 transitions, 52 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-11 18:53:32,671 INFO L241 Difference]: Finished difference. Result has 23 places, 11 transitions, 43 flow [2021-06-11 18:53:32,671 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=43, PETRI_PLACES=23, PETRI_TRANSITIONS=11} [2021-06-11 18:53:32,671 INFO L343 CegarLoopForPetriNet]: 20 programPoint places, 3 predicate places. [2021-06-11 18:53:32,671 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 18:53:32,672 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 23 places, 11 transitions, 43 flow [2021-06-11 18:53:32,672 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 23 places, 11 transitions, 43 flow [2021-06-11 18:53:32,672 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 22 places, 11 transitions, 43 flow [2021-06-11 18:53:32,675 INFO L129 PetriNetUnfolder]: 0/16 cut-off events. [2021-06-11 18:53:32,675 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-06-11 18:53:32,676 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 16 events. 0/16 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 18 event pairs, 0 based on Foata normal form. 0/14 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2021-06-11 18:53:32,676 INFO L151 LiptonReduction]: Number of co-enabled transitions 18 [2021-06-11 18:53:32,677 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 18:53:32,677 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 18:53:32,677 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 6 [2021-06-11 18:53:32,678 INFO L480 AbstractCegarLoop]: Abstraction has has 22 places, 11 transitions, 43 flow [2021-06-11 18:53:32,678 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 18:53:32,678 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 18:53:32,678 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 18:53:32,678 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-11 18:53:32,679 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 18:53:32,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 18:53:32,679 INFO L82 PathProgramCache]: Analyzing trace with hash 1741777231, now seen corresponding path program 2 times [2021-06-11 18:53:32,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 18:53:32,679 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445796995] [2021-06-11 18:53:32,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 18:53:32,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 18:53:32,713 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 18:53:32,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 18:53:32,715 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 18:53:32,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 18:53:32,725 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 18:53:32,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 18:53:32,747 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-06-11 18:53:32,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 18:53:32,779 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 18:53:32,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445796995] [2021-06-11 18:53:32,779 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 18:53:32,780 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-11 18:53:32,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957202602] [2021-06-11 18:53:32,780 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-11 18:53:32,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 18:53:32,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-11 18:53:32,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-06-11 18:53:32,781 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 27 [2021-06-11 18:53:32,782 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 11 transitions, 43 flow. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 18:53:32,782 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 18:53:32,782 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 27 [2021-06-11 18:53:32,782 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 18:53:32,821 INFO L129 PetriNetUnfolder]: 1/31 cut-off events. [2021-06-11 18:53:32,821 INFO L130 PetriNetUnfolder]: For 25/28 co-relation queries the response was YES. [2021-06-11 18:53:32,821 INFO L84 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 31 events. 1/31 cut-off events. For 25/28 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 101 event pairs, 1 based on Foata normal form. 1/31 useless extension candidates. Maximal degree in co-relation 65. Up to 8 conditions per place. [2021-06-11 18:53:32,822 INFO L132 encePairwiseOnDemand]: 23/27 looper letters, 5 selfloop transitions, 3 changer transitions 1/15 dead transitions. [2021-06-11 18:53:32,822 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 15 transitions, 79 flow [2021-06-11 18:53:32,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-11 18:53:32,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-11 18:53:32,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 104 transitions. [2021-06-11 18:53:32,825 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7703703703703704 [2021-06-11 18:53:32,825 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 104 transitions. [2021-06-11 18:53:32,826 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 104 transitions. [2021-06-11 18:53:32,826 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 18:53:32,826 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 104 transitions. [2021-06-11 18:53:32,826 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 20.8) internal successors, (104), 5 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 18:53:32,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 27.0) internal successors, (162), 6 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 18:53:32,827 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 27.0) internal successors, (162), 6 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 18:53:32,827 INFO L185 Difference]: Start difference. First operand has 22 places, 11 transitions, 43 flow. Second operand 5 states and 104 transitions. [2021-06-11 18:53:32,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 15 transitions, 79 flow [2021-06-11 18:53:32,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 15 transitions, 72 flow, removed 2 selfloop flow, removed 2 redundant places. [2021-06-11 18:53:32,828 INFO L241 Difference]: Finished difference. Result has 27 places, 12 transitions, 60 flow [2021-06-11 18:53:32,828 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=60, PETRI_PLACES=27, PETRI_TRANSITIONS=12} [2021-06-11 18:53:32,829 INFO L343 CegarLoopForPetriNet]: 20 programPoint places, 7 predicate places. [2021-06-11 18:53:32,829 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 18:53:32,829 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 27 places, 12 transitions, 60 flow [2021-06-11 18:53:32,829 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 27 places, 12 transitions, 60 flow [2021-06-11 18:53:32,830 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 26 places, 12 transitions, 60 flow [2021-06-11 18:53:32,834 INFO L129 PetriNetUnfolder]: 0/26 cut-off events. [2021-06-11 18:53:32,834 INFO L130 PetriNetUnfolder]: For 28/30 co-relation queries the response was YES. [2021-06-11 18:53:32,835 INFO L84 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 26 events. 0/26 cut-off events. For 28/30 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 71 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2021-06-11 18:53:32,835 INFO L151 LiptonReduction]: Number of co-enabled transitions 18 [2021-06-11 18:53:32,838 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 18:53:32,839 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 18:53:32,839 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 10 [2021-06-11 18:53:32,840 INFO L480 AbstractCegarLoop]: Abstraction has has 26 places, 12 transitions, 60 flow [2021-06-11 18:53:32,840 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 18:53:32,840 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 18:53:32,840 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 18:53:32,840 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-11 18:53:32,841 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 18:53:32,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 18:53:32,841 INFO L82 PathProgramCache]: Analyzing trace with hash 1788944855, now seen corresponding path program 3 times [2021-06-11 18:53:32,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 18:53:32,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728022880] [2021-06-11 18:53:32,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 18:53:32,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 18:53:32,862 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 18:53:32,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 18:53:32,863 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 18:53:32,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 18:53:32,871 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 18:53:32,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 18:53:32,883 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-06-11 18:53:32,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 18:53:32,895 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 18:53:32,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728022880] [2021-06-11 18:53:32,895 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 18:53:32,895 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-11 18:53:32,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076315104] [2021-06-11 18:53:32,896 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-11 18:53:32,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 18:53:32,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-11 18:53:32,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-06-11 18:53:32,897 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 27 [2021-06-11 18:53:32,897 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 12 transitions, 60 flow. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 18:53:32,898 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 18:53:32,898 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 27 [2021-06-11 18:53:32,898 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 18:53:32,923 INFO L129 PetriNetUnfolder]: 1/27 cut-off events. [2021-06-11 18:53:32,924 INFO L130 PetriNetUnfolder]: For 46/49 co-relation queries the response was YES. [2021-06-11 18:53:32,924 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 27 events. 1/27 cut-off events. For 46/49 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 74 event pairs, 0 based on Foata normal form. 1/27 useless extension candidates. Maximal degree in co-relation 71. Up to 6 conditions per place. [2021-06-11 18:53:32,924 INFO L132 encePairwiseOnDemand]: 23/27 looper letters, 5 selfloop transitions, 3 changer transitions 3/17 dead transitions. [2021-06-11 18:53:32,925 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 17 transitions, 114 flow [2021-06-11 18:53:32,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-11 18:53:32,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-11 18:53:32,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 104 transitions. [2021-06-11 18:53:32,926 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7703703703703704 [2021-06-11 18:53:32,926 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 104 transitions. [2021-06-11 18:53:32,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 104 transitions. [2021-06-11 18:53:32,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 18:53:32,927 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 104 transitions. [2021-06-11 18:53:32,927 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 20.8) internal successors, (104), 5 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 18:53:32,928 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 27.0) internal successors, (162), 6 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 18:53:32,928 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 27.0) internal successors, (162), 6 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 18:53:32,928 INFO L185 Difference]: Start difference. First operand has 26 places, 12 transitions, 60 flow. Second operand 5 states and 104 transitions. [2021-06-11 18:53:32,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 17 transitions, 114 flow [2021-06-11 18:53:32,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 17 transitions, 104 flow, removed 3 selfloop flow, removed 2 redundant places. [2021-06-11 18:53:32,930 INFO L241 Difference]: Finished difference. Result has 31 places, 12 transitions, 70 flow [2021-06-11 18:53:32,930 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=70, PETRI_PLACES=31, PETRI_TRANSITIONS=12} [2021-06-11 18:53:32,931 INFO L343 CegarLoopForPetriNet]: 20 programPoint places, 11 predicate places. [2021-06-11 18:53:32,931 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 18:53:32,931 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 31 places, 12 transitions, 70 flow [2021-06-11 18:53:32,931 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 31 places, 12 transitions, 70 flow [2021-06-11 18:53:32,932 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 30 places, 12 transitions, 70 flow [2021-06-11 18:53:32,935 INFO L129 PetriNetUnfolder]: 0/20 cut-off events. [2021-06-11 18:53:32,936 INFO L130 PetriNetUnfolder]: For 37/38 co-relation queries the response was YES. [2021-06-11 18:53:32,936 INFO L84 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 20 events. 0/20 cut-off events. For 37/38 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 32 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2021-06-11 18:53:32,936 INFO L151 LiptonReduction]: Number of co-enabled transitions 14 [2021-06-11 18:53:32,937 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 18:53:32,937 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 18:53:32,937 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 6 [2021-06-11 18:53:32,938 INFO L480 AbstractCegarLoop]: Abstraction has has 30 places, 12 transitions, 70 flow [2021-06-11 18:53:32,938 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 18:53:32,938 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 18:53:32,938 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 18:53:32,939 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-11 18:53:32,939 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 18:53:32,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 18:53:32,939 INFO L82 PathProgramCache]: Analyzing trace with hash 1808606915, now seen corresponding path program 4 times [2021-06-11 18:53:32,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 18:53:32,939 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120583772] [2021-06-11 18:53:32,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 18:53:32,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 18:53:32,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 18:53:32,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 18:53:32,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 18:53:32,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 18:53:32,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 18:53:32,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 18:53:32,978 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-06-11 18:53:32,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 18:53:32,988 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 18:53:32,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120583772] [2021-06-11 18:53:32,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 18:53:32,989 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-11 18:53:32,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91021399] [2021-06-11 18:53:32,989 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-11 18:53:32,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 18:53:32,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-11 18:53:32,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-06-11 18:53:32,991 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 27 [2021-06-11 18:53:32,991 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 12 transitions, 70 flow. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 18:53:32,991 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 18:53:32,991 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 27 [2021-06-11 18:53:32,992 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 18:53:33,022 INFO L129 PetriNetUnfolder]: 0/26 cut-off events. [2021-06-11 18:53:33,023 INFO L130 PetriNetUnfolder]: For 67/70 co-relation queries the response was YES. [2021-06-11 18:53:33,023 INFO L84 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 26 events. 0/26 cut-off events. For 67/70 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 64 event pairs, 0 based on Foata normal form. 1/26 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2021-06-11 18:53:33,023 INFO L132 encePairwiseOnDemand]: 23/27 looper letters, 4 selfloop transitions, 2 changer transitions 2/14 dead transitions. [2021-06-11 18:53:33,023 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 14 transitions, 106 flow [2021-06-11 18:53:33,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-11 18:53:33,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-11 18:53:33,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 103 transitions. [2021-06-11 18:53:33,025 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.762962962962963 [2021-06-11 18:53:33,025 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 103 transitions. [2021-06-11 18:53:33,025 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 103 transitions. [2021-06-11 18:53:33,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 18:53:33,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 103 transitions. [2021-06-11 18:53:33,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 18:53:33,026 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 27.0) internal successors, (162), 6 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 18:53:33,027 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 27.0) internal successors, (162), 6 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 18:53:33,027 INFO L185 Difference]: Start difference. First operand has 30 places, 12 transitions, 70 flow. Second operand 5 states and 103 transitions. [2021-06-11 18:53:33,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 14 transitions, 106 flow [2021-06-11 18:53:33,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 14 transitions, 92 flow, removed 4 selfloop flow, removed 4 redundant places. [2021-06-11 18:53:33,029 INFO L241 Difference]: Finished difference. Result has 33 places, 12 transitions, 72 flow [2021-06-11 18:53:33,029 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=72, PETRI_PLACES=33, PETRI_TRANSITIONS=12} [2021-06-11 18:53:33,029 INFO L343 CegarLoopForPetriNet]: 20 programPoint places, 13 predicate places. [2021-06-11 18:53:33,029 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 18:53:33,029 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 33 places, 12 transitions, 72 flow [2021-06-11 18:53:33,030 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 33 places, 12 transitions, 72 flow [2021-06-11 18:53:33,030 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 31 places, 12 transitions, 72 flow [2021-06-11 18:53:33,033 INFO L129 PetriNetUnfolder]: 0/22 cut-off events. [2021-06-11 18:53:33,033 INFO L130 PetriNetUnfolder]: For 36/37 co-relation queries the response was YES. [2021-06-11 18:53:33,034 INFO L84 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 22 events. 0/22 cut-off events. For 36/37 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 37 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2021-06-11 18:53:33,034 INFO L151 LiptonReduction]: Number of co-enabled transitions 10 [2021-06-11 18:53:33,035 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 18:53:33,035 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 18:53:33,035 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 6 [2021-06-11 18:53:33,036 INFO L480 AbstractCegarLoop]: Abstraction has has 31 places, 12 transitions, 72 flow [2021-06-11 18:53:33,036 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 18:53:33,036 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 18:53:33,036 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 18:53:33,036 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-11 18:53:33,036 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 18:53:33,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 18:53:33,037 INFO L82 PathProgramCache]: Analyzing trace with hash 957775955, now seen corresponding path program 5 times [2021-06-11 18:53:33,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 18:53:33,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826566178] [2021-06-11 18:53:33,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 18:53:33,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 18:53:33,054 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 18:53:33,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 18:53:33,055 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 18:53:33,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 18:53:33,061 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 18:53:33,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 18:53:33,071 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-06-11 18:53:33,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 18:53:33,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 18:53:33,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826566178] [2021-06-11 18:53:33,082 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 18:53:33,082 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-11 18:53:33,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607227072] [2021-06-11 18:53:33,082 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-11 18:53:33,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 18:53:33,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-11 18:53:33,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-06-11 18:53:33,084 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 27 [2021-06-11 18:53:33,084 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 12 transitions, 72 flow. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 18:53:33,084 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 18:53:33,084 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 27 [2021-06-11 18:53:33,084 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 18:53:33,119 INFO L129 PetriNetUnfolder]: 0/21 cut-off events. [2021-06-11 18:53:33,120 INFO L130 PetriNetUnfolder]: For 52/55 co-relation queries the response was YES. [2021-06-11 18:53:33,120 INFO L84 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 21 events. 0/21 cut-off events. For 52/55 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 37 event pairs, 0 based on Foata normal form. 1/21 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2021-06-11 18:53:33,120 INFO L132 encePairwiseOnDemand]: 23/27 looper letters, 2 selfloop transitions, 2 changer transitions 4/14 dead transitions. [2021-06-11 18:53:33,120 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 14 transitions, 108 flow [2021-06-11 18:53:33,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-11 18:53:33,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-11 18:53:33,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 102 transitions. [2021-06-11 18:53:33,122 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7555555555555555 [2021-06-11 18:53:33,122 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 102 transitions. [2021-06-11 18:53:33,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 102 transitions. [2021-06-11 18:53:33,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 18:53:33,123 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 102 transitions. [2021-06-11 18:53:33,124 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 18:53:33,126 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 27.0) internal successors, (162), 6 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 18:53:33,127 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 27.0) internal successors, (162), 6 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 18:53:33,127 INFO L185 Difference]: Start difference. First operand has 31 places, 12 transitions, 72 flow. Second operand 5 states and 102 transitions. [2021-06-11 18:53:33,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 14 transitions, 108 flow [2021-06-11 18:53:33,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 14 transitions, 96 flow, removed 3 selfloop flow, removed 4 redundant places. [2021-06-11 18:53:33,133 INFO L241 Difference]: Finished difference. Result has 32 places, 10 transitions, 51 flow [2021-06-11 18:53:33,133 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=51, PETRI_PLACES=32, PETRI_TRANSITIONS=10} [2021-06-11 18:53:33,134 INFO L343 CegarLoopForPetriNet]: 20 programPoint places, 12 predicate places. [2021-06-11 18:53:33,134 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 18:53:33,134 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 32 places, 10 transitions, 51 flow [2021-06-11 18:53:33,134 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 32 places, 10 transitions, 51 flow [2021-06-11 18:53:33,134 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 29 places, 10 transitions, 51 flow [2021-06-11 18:53:33,138 INFO L129 PetriNetUnfolder]: 0/11 cut-off events. [2021-06-11 18:53:33,138 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2021-06-11 18:53:33,139 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 11 events. 0/11 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 3 event pairs, 0 based on Foata normal form. 0/11 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-06-11 18:53:33,139 INFO L151 LiptonReduction]: Number of co-enabled transitions 2 [2021-06-11 18:53:33,140 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 18:53:33,140 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 18:53:33,140 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 6 [2021-06-11 18:53:33,149 INFO L480 AbstractCegarLoop]: Abstraction has has 29 places, 10 transitions, 51 flow [2021-06-11 18:53:33,149 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 18:53:33,149 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 18:53:33,150 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 18:53:33,150 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-11 18:53:33,150 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 18:53:33,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 18:53:33,150 INFO L82 PathProgramCache]: Analyzing trace with hash 6622113, now seen corresponding path program 6 times [2021-06-11 18:53:33,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 18:53:33,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188484300] [2021-06-11 18:53:33,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 18:53:33,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 18:53:33,202 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 18:53:33,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 18:53:33,203 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 18:53:33,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 18:53:33,210 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 18:53:33,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 18:53:33,226 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-06-11 18:53:33,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 18:53:33,243 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 18:53:33,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188484300] [2021-06-11 18:53:33,244 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 18:53:33,244 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-11 18:53:33,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838723050] [2021-06-11 18:53:33,244 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-11 18:53:33,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 18:53:33,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-11 18:53:33,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-06-11 18:53:33,246 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 27 [2021-06-11 18:53:33,246 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 10 transitions, 51 flow. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 18:53:33,246 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 18:53:33,246 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 27 [2021-06-11 18:53:33,246 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 18:53:33,265 INFO L129 PetriNetUnfolder]: 0/10 cut-off events. [2021-06-11 18:53:33,265 INFO L130 PetriNetUnfolder]: For 22/24 co-relation queries the response was YES. [2021-06-11 18:53:33,265 INFO L84 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 10 events. 0/10 cut-off events. For 22/24 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 2 event pairs, 0 based on Foata normal form. 1/11 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-06-11 18:53:33,265 INFO L132 encePairwiseOnDemand]: 23/27 looper letters, 0 selfloop transitions, 0 changer transitions 10/10 dead transitions. [2021-06-11 18:53:33,265 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 10 transitions, 63 flow [2021-06-11 18:53:33,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-11 18:53:33,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-11 18:53:33,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 100 transitions. [2021-06-11 18:53:33,266 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7407407407407407 [2021-06-11 18:53:33,266 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 100 transitions. [2021-06-11 18:53:33,267 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 100 transitions. [2021-06-11 18:53:33,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 18:53:33,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 100 transitions. [2021-06-11 18:53:33,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 20.0) internal successors, (100), 5 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 18:53:33,268 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 27.0) internal successors, (162), 6 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 18:53:33,268 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 27.0) internal successors, (162), 6 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 18:53:33,269 INFO L185 Difference]: Start difference. First operand has 29 places, 10 transitions, 51 flow. Second operand 5 states and 100 transitions. [2021-06-11 18:53:33,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 10 transitions, 63 flow [2021-06-11 18:53:33,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 10 transitions, 42 flow, removed 3 selfloop flow, removed 8 redundant places. [2021-06-11 18:53:33,270 INFO L241 Difference]: Finished difference. Result has 24 places, 0 transitions, 0 flow [2021-06-11 18:53:33,270 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=9, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=24, PETRI_TRANSITIONS=0} [2021-06-11 18:53:33,270 INFO L343 CegarLoopForPetriNet]: 20 programPoint places, 4 predicate places. [2021-06-11 18:53:33,270 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 18:53:33,270 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 24 places, 0 transitions, 0 flow [2021-06-11 18:53:33,271 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 24 places, 0 transitions, 0 flow [2021-06-11 18:53:33,271 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-06-11 18:53:33,271 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-06-11 18:53:33,271 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 18:53:33,271 INFO L84 FinitePrefix]: Finished finitePrefix Result has 0 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs, 0 based on Foata normal form. 0/0 useless extension candidates. Maximal degree in co-relation 0. Up to 0 conditions per place. [2021-06-11 18:53:33,271 INFO L151 LiptonReduction]: Number of co-enabled transitions 0 [2021-06-11 18:53:33,271 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 18:53:33,272 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 18:53:33,272 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2 [2021-06-11 18:53:33,272 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-06-11 18:53:33,273 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 18:53:33,273 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-11 18:53:33,276 INFO L202 PluginConnector]: Adding new model example_interleaving.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.06 06:53:33 BasicIcfg [2021-06-11 18:53:33,276 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-11 18:53:33,277 INFO L168 Benchmark]: Toolchain (without parser) took 1685.94 ms. Allocated memory is still 408.9 MB. Free memory was 388.8 MB in the beginning and 272.5 MB in the end (delta: 116.3 MB). Peak memory consumption was 118.1 MB. Max. memory is 16.0 GB. [2021-06-11 18:53:33,277 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.56 ms. Allocated memory is still 408.9 MB. Free memory was 389.8 MB in the beginning and 389.6 MB in the end (delta: 136.4 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-11 18:53:33,278 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.46 ms. Allocated memory is still 408.9 MB. Free memory was 388.7 MB in the beginning and 387.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-11 18:53:33,278 INFO L168 Benchmark]: Boogie Preprocessor took 12.81 ms. Allocated memory is still 408.9 MB. Free memory was 387.1 MB in the beginning and 386.3 MB in the end (delta: 845.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-11 18:53:33,278 INFO L168 Benchmark]: RCFGBuilder took 221.11 ms. Allocated memory is still 408.9 MB. Free memory was 386.3 MB in the beginning and 377.5 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. [2021-06-11 18:53:33,279 INFO L168 Benchmark]: TraceAbstraction took 1412.30 ms. Allocated memory is still 408.9 MB. Free memory was 376.9 MB in the beginning and 272.5 MB in the end (delta: 104.5 MB). Peak memory consumption was 105.6 MB. Max. memory is 16.0 GB. [2021-06-11 18:53:33,280 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 0.56 ms. Allocated memory is still 408.9 MB. Free memory was 389.8 MB in the beginning and 389.6 MB in the end (delta: 136.4 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 32.46 ms. Allocated memory is still 408.9 MB. Free memory was 388.7 MB in the beginning and 387.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 12.81 ms. Allocated memory is still 408.9 MB. Free memory was 387.1 MB in the beginning and 386.3 MB in the end (delta: 845.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 221.11 ms. Allocated memory is still 408.9 MB. Free memory was 386.3 MB in the beginning and 377.5 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. * TraceAbstraction took 1412.30 ms. Allocated memory is still 408.9 MB. Free memory was 376.9 MB in the beginning and 272.5 MB in the end (delta: 104.5 MB). Peak memory consumption was 105.6 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 128.6ms, 23 PlacesBefore, 20 PlacesAfterwards, 19 TransitionsBefore, 16 TransitionsAfterwards, 84 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 3 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 27 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 27, positive: 27, positive conditional: 27, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 27, positive: 27, positive conditional: 0, positive unconditional: 27, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 27, positive: 27, positive conditional: 0, positive unconditional: 27, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 27, positive: 27, positive conditional: 0, positive unconditional: 27, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 27, positive: 27, positive conditional: 0, positive unconditional: 27, 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: 27, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 27, unknown conditional: 0, unknown unconditional: 27] , 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, Eliminated conditions: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 15.3ms, 16 PlacesBefore, 16 PlacesAfterwards, 12 TransitionsBefore, 12 TransitionsAfterwards, 24 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: 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: SemanticConditionEliminator.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: 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: 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, Eliminated conditions: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.2ms, 17 PlacesBefore, 17 PlacesAfterwards, 10 TransitionsBefore, 10 TransitionsAfterwards, 18 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: 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: SemanticConditionEliminator.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: 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: 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, Eliminated conditions: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.9ms, 23 PlacesBefore, 22 PlacesAfterwards, 11 TransitionsBefore, 11 TransitionsAfterwards, 18 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: 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: SemanticConditionEliminator.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: 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: 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, Eliminated conditions: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 9.5ms, 27 PlacesBefore, 26 PlacesAfterwards, 12 TransitionsBefore, 12 TransitionsAfterwards, 18 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: 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: SemanticConditionEliminator.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: 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: 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, Eliminated conditions: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.8ms, 31 PlacesBefore, 30 PlacesAfterwards, 12 TransitionsBefore, 12 TransitionsAfterwards, 14 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: 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: SemanticConditionEliminator.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: 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: 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, Eliminated conditions: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.2ms, 33 PlacesBefore, 31 PlacesAfterwards, 12 TransitionsBefore, 12 TransitionsAfterwards, 10 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: 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: SemanticConditionEliminator.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: 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: 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, Eliminated conditions: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.7ms, 32 PlacesBefore, 29 PlacesAfterwards, 10 TransitionsBefore, 10 TransitionsAfterwards, 2 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: 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: SemanticConditionEliminator.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: 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: 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, Eliminated conditions: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.0ms, 24 PlacesBefore, 0 PlacesAfterwards, 0 TransitionsBefore, 0 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: 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: SemanticConditionEliminator.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: 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: 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, Eliminated conditions: 0 - PositiveResult [Line: 19]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 4.5ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 1270.6ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 317.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 229.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 34 SDtfs, 29 SDslu, 15 SDs, 0 SdLazy, 53 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 47.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 287.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=72occurred in iteration=6, InterpolantAutomatonStates: 36, 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: 12.2ms SsaConstructionTime, 32.7ms SatisfiabilityAnalysisTime, 462.9ms InterpolantComputationTime, 80 NumberOfCodeBlocks, 80 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 72 ConstructedInterpolants, 0 QuantifiedInterpolants, 596 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...