/usr/bin/java -Xmx8000000000 -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-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/word-trans.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2cf4d3f9dd5fed411db405f577e28237a543b59a-2cf4d3f [2021-08-12 22:20:36,110 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-12 22:20:36,113 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-12 22:20:36,150 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-08-12 22:20:36,169 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-12 22:20:36,170 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-12 22:20:36,172 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-12 22:20:36,173 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-12 22:20:36,175 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-12 22:20:36,176 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-12 22:20:36,178 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-12 22:20:36,185 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-12 22:20:36,186 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-12 22:20:36,188 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-12 22:20:36,188 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-12 22:20:36,190 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-12 22:20:36,196 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-08-12 22:20:36,207 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-NoLbe.epf [2021-08-12 22:20:36,242 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-12 22:20:36,242 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-12 22:20:36,246 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-12 22:20:36,246 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-12 22:20:36,246 INFO L138 SettingsManager]: * Use SBE=true [2021-08-12 22:20:36,246 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-12 22:20:36,246 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-12 22:20:36,247 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-12 22:20:36,247 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-12 22:20:36,247 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-12 22:20:36,248 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-12 22:20:36,248 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-12 22:20:36,248 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-12 22:20:36,248 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-12 22:20:36,248 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-12 22:20:36,249 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-12 22:20:36,249 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-12 22:20:36,249 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-12 22:20:36,249 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-12 22:20:36,249 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-12 22:20:36,250 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-12 22:20:36,250 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-12 22:20:36,250 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-12 22:20:36,250 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-12 22:20:36,250 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-12 22:20:36,251 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-12 22:20:36,251 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-12 22:20:36,251 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-12 22:20:36,251 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-08-12 22:20:36,251 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-12 22:20:36,251 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-12 22:20:36,562 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-12 22:20:36,577 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-12 22:20:36,579 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-12 22:20:36,580 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-08-12 22:20:36,583 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-08-12 22:20:36,584 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/word-trans.wvr.bpl [2021-08-12 22:20:36,585 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/word-trans.wvr.bpl' [2021-08-12 22:20:36,638 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-12 22:20:36,640 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-08-12 22:20:36,641 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-12 22:20:36,641 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-12 22:20:36,641 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-12 22:20:36,650 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "word-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 10:20:36" (1/1) ... [2021-08-12 22:20:36,667 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "word-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 10:20:36" (1/1) ... [2021-08-12 22:20:36,674 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-12 22:20:36,676 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-12 22:20:36,676 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-12 22:20:36,677 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-12 22:20:36,683 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "word-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 10:20:36" (1/1) ... [2021-08-12 22:20:36,683 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "word-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 10:20:36" (1/1) ... [2021-08-12 22:20:36,685 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "word-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 10:20:36" (1/1) ... [2021-08-12 22:20:36,686 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "word-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 10:20:36" (1/1) ... [2021-08-12 22:20:36,697 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "word-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 10:20:36" (1/1) ... [2021-08-12 22:20:36,700 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "word-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 10:20:36" (1/1) ... [2021-08-12 22:20:36,704 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "word-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 10:20:36" (1/1) ... [2021-08-12 22:20:36,709 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-12 22:20:36,710 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-12 22:20:36,710 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-12 22:20:36,711 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-12 22:20:36,712 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "word-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 10:20:36" (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 [2021-08-12 22:20:36,785 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-08-12 22:20:36,786 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-08-12 22:20:36,786 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-08-12 22:20:36,787 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-08-12 22:20:36,787 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-08-12 22:20:36,787 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-08-12 22:20:36,787 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-08-12 22:20:36,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-12 22:20:36,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-12 22:20:36,787 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-08-12 22:20:36,787 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-08-12 22:20:36,788 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-08-12 22:20:36,788 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-12 22:20:37,249 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-12 22:20:37,250 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-08-12 22:20:37,252 INFO L202 PluginConnector]: Adding new model word-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.08 10:20:37 BoogieIcfgContainer [2021-08-12 22:20:37,252 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-12 22:20:37,253 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-12 22:20:37,254 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-12 22:20:37,256 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-12 22:20:37,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "word-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 10:20:36" (1/2) ... [2021-08-12 22:20:37,257 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59c146b7 and model type word-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.08 10:20:37, skipping insertion in model container [2021-08-12 22:20:37,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "word-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.08 10:20:37" (2/2) ... [2021-08-12 22:20:37,258 INFO L111 eAbstractionObserver]: Analyzing ICFG word-trans.wvr.bpl [2021-08-12 22:20:37,265 INFO L206 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-12 22:20:37,266 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-12 22:20:37,267 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-12 22:20:37,342 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-08-12 22:20:37,364 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-08-12 22:20:37,384 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-12 22:20:37,384 INFO L379 AbstractCegarLoop]: Hoare is false [2021-08-12 22:20:37,385 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-12 22:20:37,385 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-12 22:20:37,385 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-12 22:20:37,385 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-12 22:20:37,385 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-12 22:20:37,385 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-12 22:20:37,392 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 32 places, 28 transitions, 80 flow [2021-08-12 22:20:37,422 INFO L129 PetriNetUnfolder]: 6/25 cut-off events. [2021-08-12 22:20:37,422 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-08-12 22:20:37,426 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 25 events. 6/25 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 33 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 21. Up to 2 conditions per place. [2021-08-12 22:20:37,426 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 28 transitions, 80 flow [2021-08-12 22:20:37,430 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 27 places, 23 transitions, 64 flow [2021-08-12 22:20:37,441 INFO L129 PetriNetUnfolder]: 6/22 cut-off events. [2021-08-12 22:20:37,442 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-08-12 22:20:37,442 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:20:37,442 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:20:37,443 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:20:37,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:20:37,449 INFO L82 PathProgramCache]: Analyzing trace with hash -722032350, now seen corresponding path program 1 times [2021-08-12 22:20:37,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:20:37,457 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010146590] [2021-08-12 22:20:37,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:20:37,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:20:37,631 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:37,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:37,641 INFO L142 QuantifierPusher]: treesize reduction 26, result has 21.2 percent of original size [2021-08-12 22:20:37,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:20:37,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:37,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-12 22:20:37,672 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:37,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-12 22:20:37,687 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:37,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:37,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:20:37,691 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:20:37,691 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010146590] [2021-08-12 22:20:37,692 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010146590] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:20:37,692 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:20:37,692 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-12 22:20:37,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942703601] [2021-08-12 22:20:37,699 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-08-12 22:20:37,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:20:37,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-12 22:20:37,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-12 22:20:37,715 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 28 [2021-08-12 22:20:37,718 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 23 transitions, 64 flow. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:37,719 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:20:37,719 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 28 [2021-08-12 22:20:37,720 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:20:37,934 INFO L129 PetriNetUnfolder]: 142/253 cut-off events. [2021-08-12 22:20:37,936 INFO L130 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2021-08-12 22:20:37,938 INFO L84 FinitePrefix]: Finished finitePrefix Result has 481 conditions, 253 events. 142/253 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 983 event pairs, 28 based on Foata normal form. 1/154 useless extension candidates. Maximal degree in co-relation 450. Up to 120 conditions per place. [2021-08-12 22:20:37,942 INFO L132 encePairwiseOnDemand]: 18/28 looper letters, 22 selfloop transitions, 13 changer transitions 0/45 dead transitions. [2021-08-12 22:20:37,943 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 45 transitions, 178 flow [2021-08-12 22:20:37,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-12 22:20:37,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-12 22:20:37,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 106 transitions. [2021-08-12 22:20:37,955 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7571428571428571 [2021-08-12 22:20:37,955 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 106 transitions. [2021-08-12 22:20:37,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 106 transitions. [2021-08-12 22:20:37,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:20:37,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 106 transitions. [2021-08-12 22:20:37,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:37,968 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:37,968 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:37,969 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 4 predicate places. [2021-08-12 22:20:37,969 INFO L482 AbstractCegarLoop]: Abstraction has has 31 places, 45 transitions, 178 flow [2021-08-12 22:20:37,969 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:37,969 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:20:37,970 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:20:37,970 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-12 22:20:37,970 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:20:37,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:20:37,971 INFO L82 PathProgramCache]: Analyzing trace with hash -2122287860, now seen corresponding path program 2 times [2021-08-12 22:20:37,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:20:37,971 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349847115] [2021-08-12 22:20:37,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:20:37,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:20:38,036 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:38,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:38,042 INFO L142 QuantifierPusher]: treesize reduction 19, result has 44.1 percent of original size [2021-08-12 22:20:38,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-12 22:20:38,054 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:38,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-08-12 22:20:38,072 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:38,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-12 22:20:38,085 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:38,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:38,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:20:38,086 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:20:38,086 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349847115] [2021-08-12 22:20:38,086 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349847115] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:20:38,087 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:20:38,087 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-12 22:20:38,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041018482] [2021-08-12 22:20:38,088 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-08-12 22:20:38,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:20:38,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-12 22:20:38,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-12 22:20:38,089 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 28 [2021-08-12 22:20:38,090 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 45 transitions, 178 flow. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:38,090 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:20:38,090 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 28 [2021-08-12 22:20:38,090 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:20:38,201 INFO L129 PetriNetUnfolder]: 166/343 cut-off events. [2021-08-12 22:20:38,201 INFO L130 PetriNetUnfolder]: For 50/62 co-relation queries the response was YES. [2021-08-12 22:20:38,202 INFO L84 FinitePrefix]: Finished finitePrefix Result has 888 conditions, 343 events. 166/343 cut-off events. For 50/62 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 1655 event pairs, 28 based on Foata normal form. 1/219 useless extension candidates. Maximal degree in co-relation 827. Up to 162 conditions per place. [2021-08-12 22:20:38,205 INFO L132 encePairwiseOnDemand]: 21/28 looper letters, 54 selfloop transitions, 8 changer transitions 1/73 dead transitions. [2021-08-12 22:20:38,205 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 73 transitions, 416 flow [2021-08-12 22:20:38,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-12 22:20:38,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-12 22:20:38,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 100 transitions. [2021-08-12 22:20:38,206 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7142857142857143 [2021-08-12 22:20:38,206 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 100 transitions. [2021-08-12 22:20:38,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 100 transitions. [2021-08-12 22:20:38,207 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:20:38,207 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 100 transitions. [2021-08-12 22:20:38,208 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) [2021-08-12 22:20:38,208 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:38,208 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:38,209 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 8 predicate places. [2021-08-12 22:20:38,209 INFO L482 AbstractCegarLoop]: Abstraction has has 35 places, 73 transitions, 416 flow [2021-08-12 22:20:38,209 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:38,209 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:20:38,209 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:20:38,210 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-12 22:20:38,210 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:20:38,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:20:38,210 INFO L82 PathProgramCache]: Analyzing trace with hash -951874680, now seen corresponding path program 3 times [2021-08-12 22:20:38,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:20:38,210 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646634990] [2021-08-12 22:20:38,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:20:38,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:20:38,253 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:38,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:38,255 INFO L142 QuantifierPusher]: treesize reduction 19, result has 44.1 percent of original size [2021-08-12 22:20:38,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-12 22:20:38,266 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:38,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-08-12 22:20:38,284 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:38,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-12 22:20:38,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:38,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:38,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:20:38,293 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:20:38,294 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646634990] [2021-08-12 22:20:38,294 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646634990] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:20:38,294 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:20:38,294 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-12 22:20:38,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987101085] [2021-08-12 22:20:38,294 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-08-12 22:20:38,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:20:38,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-12 22:20:38,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-12 22:20:38,296 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 28 [2021-08-12 22:20:38,296 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 73 transitions, 416 flow. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:38,296 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:20:38,296 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 28 [2021-08-12 22:20:38,296 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:20:38,448 INFO L129 PetriNetUnfolder]: 190/437 cut-off events. [2021-08-12 22:20:38,448 INFO L130 PetriNetUnfolder]: For 117/153 co-relation queries the response was YES. [2021-08-12 22:20:38,449 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1404 conditions, 437 events. 190/437 cut-off events. For 117/153 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2481 event pairs, 28 based on Foata normal form. 1/291 useless extension candidates. Maximal degree in co-relation 1305. Up to 216 conditions per place. [2021-08-12 22:20:38,452 INFO L132 encePairwiseOnDemand]: 21/28 looper letters, 77 selfloop transitions, 10 changer transitions 2/99 dead transitions. [2021-08-12 22:20:38,452 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 99 transitions, 750 flow [2021-08-12 22:20:38,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-12 22:20:38,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-12 22:20:38,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 100 transitions. [2021-08-12 22:20:38,454 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7142857142857143 [2021-08-12 22:20:38,454 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 100 transitions. [2021-08-12 22:20:38,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 100 transitions. [2021-08-12 22:20:38,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:20:38,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 100 transitions. [2021-08-12 22:20:38,455 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) [2021-08-12 22:20:38,456 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:38,456 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:38,457 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 12 predicate places. [2021-08-12 22:20:38,457 INFO L482 AbstractCegarLoop]: Abstraction has has 39 places, 99 transitions, 750 flow [2021-08-12 22:20:38,457 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:38,457 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:20:38,457 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:20:38,457 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-12 22:20:38,457 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:20:38,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:20:38,458 INFO L82 PathProgramCache]: Analyzing trace with hash -260034724, now seen corresponding path program 4 times [2021-08-12 22:20:38,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:20:38,458 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236553748] [2021-08-12 22:20:38,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:20:38,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:20:38,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:38,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:38,483 INFO L142 QuantifierPusher]: treesize reduction 19, result has 44.1 percent of original size [2021-08-12 22:20:38,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-12 22:20:38,493 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:38,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-12 22:20:38,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:38,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-12 22:20:38,510 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:38,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:38,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:20:38,511 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:20:38,511 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236553748] [2021-08-12 22:20:38,511 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236553748] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:20:38,511 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:20:38,511 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-12 22:20:38,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836678028] [2021-08-12 22:20:38,512 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-08-12 22:20:38,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:20:38,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-12 22:20:38,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-12 22:20:38,513 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 28 [2021-08-12 22:20:38,513 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 99 transitions, 750 flow. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:38,513 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:20:38,513 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 28 [2021-08-12 22:20:38,514 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:20:38,662 INFO L129 PetriNetUnfolder]: 202/481 cut-off events. [2021-08-12 22:20:38,662 INFO L130 PetriNetUnfolder]: For 212/344 co-relation queries the response was YES. [2021-08-12 22:20:38,665 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1852 conditions, 481 events. 202/481 cut-off events. For 212/344 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 2870 event pairs, 28 based on Foata normal form. 6/328 useless extension candidates. Maximal degree in co-relation 1731. Up to 216 conditions per place. [2021-08-12 22:20:38,669 INFO L132 encePairwiseOnDemand]: 18/28 looper letters, 77 selfloop transitions, 23 changer transitions 2/112 dead transitions. [2021-08-12 22:20:38,670 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 112 transitions, 1058 flow [2021-08-12 22:20:38,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-12 22:20:38,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-12 22:20:38,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 104 transitions. [2021-08-12 22:20:38,674 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7428571428571429 [2021-08-12 22:20:38,674 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 104 transitions. [2021-08-12 22:20:38,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 104 transitions. [2021-08-12 22:20:38,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:20:38,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 104 transitions. [2021-08-12 22:20:38,677 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) [2021-08-12 22:20:38,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:38,679 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:38,679 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 16 predicate places. [2021-08-12 22:20:38,679 INFO L482 AbstractCegarLoop]: Abstraction has has 43 places, 112 transitions, 1058 flow [2021-08-12 22:20:38,679 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:38,679 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:20:38,680 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:20:38,680 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-12 22:20:38,680 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:20:38,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:20:38,681 INFO L82 PathProgramCache]: Analyzing trace with hash 2038838174, now seen corresponding path program 5 times [2021-08-12 22:20:38,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:20:38,682 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851753888] [2021-08-12 22:20:38,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:20:38,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:20:38,729 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:38,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:38,733 INFO L142 QuantifierPusher]: treesize reduction 19, result has 44.1 percent of original size [2021-08-12 22:20:38,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-12 22:20:38,749 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:38,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-12 22:20:38,762 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:38,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-12 22:20:38,776 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:38,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:38,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:20:38,778 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:20:38,778 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851753888] [2021-08-12 22:20:38,778 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851753888] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:20:38,779 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:20:38,779 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-12 22:20:38,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113660284] [2021-08-12 22:20:38,779 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-08-12 22:20:38,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:20:38,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-12 22:20:38,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-12 22:20:38,786 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 28 [2021-08-12 22:20:38,786 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 112 transitions, 1058 flow. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:38,786 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:20:38,786 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 28 [2021-08-12 22:20:38,786 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:20:38,960 INFO L129 PetriNetUnfolder]: 206/485 cut-off events. [2021-08-12 22:20:38,960 INFO L130 PetriNetUnfolder]: For 269/331 co-relation queries the response was YES. [2021-08-12 22:20:38,961 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2204 conditions, 485 events. 206/485 cut-off events. For 269/331 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 2901 event pairs, 28 based on Foata normal form. 1/325 useless extension candidates. Maximal degree in co-relation 2077. Up to 222 conditions per place. [2021-08-12 22:20:38,965 INFO L132 encePairwiseOnDemand]: 18/28 looper letters, 80 selfloop transitions, 23 changer transitions 2/115 dead transitions. [2021-08-12 22:20:38,965 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 115 transitions, 1298 flow [2021-08-12 22:20:38,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-12 22:20:38,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-12 22:20:38,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 104 transitions. [2021-08-12 22:20:38,967 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7428571428571429 [2021-08-12 22:20:38,967 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 104 transitions. [2021-08-12 22:20:38,968 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 104 transitions. [2021-08-12 22:20:38,968 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:20:38,968 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 104 transitions. [2021-08-12 22:20:38,968 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) [2021-08-12 22:20:38,970 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:38,970 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:38,971 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 20 predicate places. [2021-08-12 22:20:38,971 INFO L482 AbstractCegarLoop]: Abstraction has has 47 places, 115 transitions, 1298 flow [2021-08-12 22:20:38,971 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:38,971 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:20:38,971 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:20:38,971 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-12 22:20:38,971 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:20:38,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:20:38,972 INFO L82 PathProgramCache]: Analyzing trace with hash 1550872340, now seen corresponding path program 6 times [2021-08-12 22:20:38,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:20:38,972 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504231440] [2021-08-12 22:20:38,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:20:38,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:20:39,012 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:39,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:39,017 INFO L142 QuantifierPusher]: treesize reduction 26, result has 21.2 percent of original size [2021-08-12 22:20:39,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:20:39,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:39,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-12 22:20:39,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:39,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-12 22:20:39,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:39,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:39,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:20:39,046 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:20:39,046 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504231440] [2021-08-12 22:20:39,046 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504231440] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:20:39,046 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:20:39,046 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-12 22:20:39,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019528546] [2021-08-12 22:20:39,046 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-08-12 22:20:39,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:20:39,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-12 22:20:39,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-12 22:20:39,047 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 28 [2021-08-12 22:20:39,048 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 115 transitions, 1298 flow. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:39,048 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:20:39,048 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 28 [2021-08-12 22:20:39,048 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:20:39,223 INFO L129 PetriNetUnfolder]: 210/473 cut-off events. [2021-08-12 22:20:39,223 INFO L130 PetriNetUnfolder]: For 382/568 co-relation queries the response was YES. [2021-08-12 22:20:39,225 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2540 conditions, 473 events. 210/473 cut-off events. For 382/568 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 2699 event pairs, 28 based on Foata normal form. 1/307 useless extension candidates. Maximal degree in co-relation 2409. Up to 222 conditions per place. [2021-08-12 22:20:39,230 INFO L132 encePairwiseOnDemand]: 18/28 looper letters, 61 selfloop transitions, 45 changer transitions 2/118 dead transitions. [2021-08-12 22:20:39,230 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 118 transitions, 1550 flow [2021-08-12 22:20:39,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-12 22:20:39,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-12 22:20:39,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 106 transitions. [2021-08-12 22:20:39,231 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7571428571428571 [2021-08-12 22:20:39,231 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 106 transitions. [2021-08-12 22:20:39,231 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 106 transitions. [2021-08-12 22:20:39,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:20:39,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 106 transitions. [2021-08-12 22:20:39,232 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:39,232 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:39,233 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:39,233 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 24 predicate places. [2021-08-12 22:20:39,233 INFO L482 AbstractCegarLoop]: Abstraction has has 51 places, 118 transitions, 1550 flow [2021-08-12 22:20:39,233 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:39,233 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:20:39,233 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:20:39,233 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-12 22:20:39,233 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:20:39,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:20:39,234 INFO L82 PathProgramCache]: Analyzing trace with hash -1089522892, now seen corresponding path program 1 times [2021-08-12 22:20:39,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:20:39,234 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112782281] [2021-08-12 22:20:39,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:20:39,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:20:39,269 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:39,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:39,271 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:39,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:20:39,275 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:39,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-12 22:20:39,282 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:39,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 22:20:39,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:39,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:39,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:20:39,292 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:20:39,292 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112782281] [2021-08-12 22:20:39,292 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112782281] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:20:39,292 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:20:39,292 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-12 22:20:39,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698763967] [2021-08-12 22:20:39,293 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-08-12 22:20:39,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:20:39,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-12 22:20:39,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-12 22:20:39,295 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 28 [2021-08-12 22:20:39,297 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 118 transitions, 1550 flow. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:39,297 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:20:39,297 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 28 [2021-08-12 22:20:39,297 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:20:39,406 INFO L129 PetriNetUnfolder]: 226/536 cut-off events. [2021-08-12 22:20:39,406 INFO L130 PetriNetUnfolder]: For 479/523 co-relation queries the response was YES. [2021-08-12 22:20:39,407 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3111 conditions, 536 events. 226/536 cut-off events. For 479/523 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3258 event pairs, 4 based on Foata normal form. 1/360 useless extension candidates. Maximal degree in co-relation 2945. Up to 254 conditions per place. [2021-08-12 22:20:39,412 INFO L132 encePairwiseOnDemand]: 21/28 looper letters, 113 selfloop transitions, 10 changer transitions 3/150 dead transitions. [2021-08-12 22:20:39,412 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 150 transitions, 2250 flow [2021-08-12 22:20:39,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-12 22:20:39,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-12 22:20:39,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 108 transitions. [2021-08-12 22:20:39,413 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7714285714285715 [2021-08-12 22:20:39,413 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 108 transitions. [2021-08-12 22:20:39,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 108 transitions. [2021-08-12 22:20:39,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:20:39,413 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 108 transitions. [2021-08-12 22:20:39,414 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 21.6) internal successors, (108), 5 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) [2021-08-12 22:20:39,414 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:39,415 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:39,415 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 28 predicate places. [2021-08-12 22:20:39,415 INFO L482 AbstractCegarLoop]: Abstraction has has 55 places, 150 transitions, 2250 flow [2021-08-12 22:20:39,415 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:39,415 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:20:39,415 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:20:39,415 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-12 22:20:39,415 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:20:39,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:20:39,416 INFO L82 PathProgramCache]: Analyzing trace with hash -814291845, now seen corresponding path program 1 times [2021-08-12 22:20:39,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:20:39,416 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634608577] [2021-08-12 22:20:39,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:20:39,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:20:39,429 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:39,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:39,430 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:39,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:20:39,433 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:39,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-12 22:20:39,440 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:39,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-12 22:20:39,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:39,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:39,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:20:39,448 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:20:39,448 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634608577] [2021-08-12 22:20:39,448 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634608577] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:20:39,448 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:20:39,448 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-12 22:20:39,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677096401] [2021-08-12 22:20:39,449 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-08-12 22:20:39,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:20:39,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-12 22:20:39,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-12 22:20:39,450 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 28 [2021-08-12 22:20:39,450 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 150 transitions, 2250 flow. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:39,450 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:20:39,450 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 28 [2021-08-12 22:20:39,450 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:20:39,584 INFO L129 PetriNetUnfolder]: 242/565 cut-off events. [2021-08-12 22:20:39,584 INFO L130 PetriNetUnfolder]: For 720/776 co-relation queries the response was YES. [2021-08-12 22:20:39,585 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3639 conditions, 565 events. 242/565 cut-off events. For 720/776 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 3382 event pairs, 0 based on Foata normal form. 1/367 useless extension candidates. Maximal degree in co-relation 3422. Up to 282 conditions per place. [2021-08-12 22:20:39,591 INFO L132 encePairwiseOnDemand]: 21/28 looper letters, 119 selfloop transitions, 21 changer transitions 11/215 dead transitions. [2021-08-12 22:20:39,591 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 215 transitions, 3552 flow [2021-08-12 22:20:39,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-12 22:20:39,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-12 22:20:39,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 108 transitions. [2021-08-12 22:20:39,592 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7714285714285715 [2021-08-12 22:20:39,592 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 108 transitions. [2021-08-12 22:20:39,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 108 transitions. [2021-08-12 22:20:39,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:20:39,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 108 transitions. [2021-08-12 22:20:39,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 21.6) internal successors, (108), 5 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) [2021-08-12 22:20:39,594 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:39,594 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:39,594 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 32 predicate places. [2021-08-12 22:20:39,594 INFO L482 AbstractCegarLoop]: Abstraction has has 59 places, 215 transitions, 3552 flow [2021-08-12 22:20:39,594 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:39,594 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:20:39,594 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:20:39,595 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-12 22:20:39,595 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:20:39,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:20:39,595 INFO L82 PathProgramCache]: Analyzing trace with hash 1334089762, now seen corresponding path program 2 times [2021-08-12 22:20:39,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:20:39,595 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297058879] [2021-08-12 22:20:39,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:20:39,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:20:39,616 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:39,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:39,618 INFO L142 QuantifierPusher]: treesize reduction 7, result has 79.4 percent of original size [2021-08-12 22:20:39,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-12 22:20:39,639 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:39,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-12 22:20:39,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:39,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 22:20:39,658 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:39,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:39,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:20:39,659 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:20:39,659 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297058879] [2021-08-12 22:20:39,659 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297058879] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:20:39,659 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:20:39,659 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-12 22:20:39,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673316240] [2021-08-12 22:20:39,660 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-08-12 22:20:39,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:20:39,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-12 22:20:39,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-12 22:20:39,661 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 28 [2021-08-12 22:20:39,661 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 215 transitions, 3552 flow. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:39,661 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:20:39,661 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 28 [2021-08-12 22:20:39,661 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:20:39,878 INFO L129 PetriNetUnfolder]: 246/573 cut-off events. [2021-08-12 22:20:39,878 INFO L130 PetriNetUnfolder]: For 1204/1745 co-relation queries the response was YES. [2021-08-12 22:20:39,879 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4028 conditions, 573 events. 246/573 cut-off events. For 1204/1745 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 3443 event pairs, 0 based on Foata normal form. 9/377 useless extension candidates. Maximal degree in co-relation 3793. Up to 290 conditions per place. [2021-08-12 22:20:39,885 INFO L132 encePairwiseOnDemand]: 21/28 looper letters, 141 selfloop transitions, 22 changer transitions 12/217 dead transitions. [2021-08-12 22:20:39,885 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 217 transitions, 3934 flow [2021-08-12 22:20:39,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-12 22:20:39,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-12 22:20:39,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 106 transitions. [2021-08-12 22:20:39,886 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7571428571428571 [2021-08-12 22:20:39,886 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 106 transitions. [2021-08-12 22:20:39,887 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 106 transitions. [2021-08-12 22:20:39,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:20:39,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 106 transitions. [2021-08-12 22:20:39,890 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:39,891 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:39,891 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:39,891 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 36 predicate places. [2021-08-12 22:20:39,892 INFO L482 AbstractCegarLoop]: Abstraction has has 63 places, 217 transitions, 3934 flow [2021-08-12 22:20:39,892 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:39,892 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:20:39,892 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:20:39,892 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-12 22:20:39,892 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:20:39,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:20:39,893 INFO L82 PathProgramCache]: Analyzing trace with hash -1737334125, now seen corresponding path program 2 times [2021-08-12 22:20:39,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:20:39,895 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166977339] [2021-08-12 22:20:39,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:20:39,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:20:39,921 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:39,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:39,925 INFO L142 QuantifierPusher]: treesize reduction 7, result has 79.4 percent of original size [2021-08-12 22:20:39,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-12 22:20:39,948 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:39,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-08-12 22:20:39,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:39,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-12 22:20:39,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:39,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:39,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:20:39,967 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:20:39,967 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166977339] [2021-08-12 22:20:39,967 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166977339] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:20:39,967 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:20:39,967 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-12 22:20:39,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583572375] [2021-08-12 22:20:39,968 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-08-12 22:20:39,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:20:39,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-12 22:20:39,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-12 22:20:39,970 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 28 [2021-08-12 22:20:39,970 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 217 transitions, 3934 flow. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:39,970 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:20:39,970 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 28 [2021-08-12 22:20:39,970 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:20:40,108 INFO L129 PetriNetUnfolder]: 246/577 cut-off events. [2021-08-12 22:20:40,109 INFO L130 PetriNetUnfolder]: For 1296/1438 co-relation queries the response was YES. [2021-08-12 22:20:40,110 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4329 conditions, 577 events. 246/577 cut-off events. For 1296/1438 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 3497 event pairs, 0 based on Foata normal form. 5/376 useless extension candidates. Maximal degree in co-relation 4076. Up to 290 conditions per place. [2021-08-12 22:20:40,116 INFO L132 encePairwiseOnDemand]: 24/28 looper letters, 123 selfloop transitions, 14 changer transitions 16/217 dead transitions. [2021-08-12 22:20:40,116 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 217 transitions, 4232 flow [2021-08-12 22:20:40,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-12 22:20:40,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-12 22:20:40,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 102 transitions. [2021-08-12 22:20:40,117 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7285714285714285 [2021-08-12 22:20:40,117 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 102 transitions. [2021-08-12 22:20:40,117 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 102 transitions. [2021-08-12 22:20:40,117 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:20:40,117 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 102 transitions. [2021-08-12 22:20:40,118 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) [2021-08-12 22:20:40,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:40,120 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:40,120 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 40 predicate places. [2021-08-12 22:20:40,120 INFO L482 AbstractCegarLoop]: Abstraction has has 67 places, 217 transitions, 4232 flow [2021-08-12 22:20:40,120 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:40,120 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:20:40,120 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:20:40,121 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-12 22:20:40,121 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:20:40,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:20:40,122 INFO L82 PathProgramCache]: Analyzing trace with hash 1733491519, now seen corresponding path program 3 times [2021-08-12 22:20:40,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:20:40,123 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69623085] [2021-08-12 22:20:40,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:20:40,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:20:40,149 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:40,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:40,155 INFO L142 QuantifierPusher]: treesize reduction 7, result has 79.4 percent of original size [2021-08-12 22:20:40,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-12 22:20:40,175 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:40,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-12 22:20:40,182 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:40,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-12 22:20:40,189 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:40,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:40,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:20:40,189 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:20:40,190 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69623085] [2021-08-12 22:20:40,191 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69623085] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:20:40,191 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:20:40,192 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-12 22:20:40,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521811568] [2021-08-12 22:20:40,192 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-08-12 22:20:40,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:20:40,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-12 22:20:40,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-12 22:20:40,193 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 28 [2021-08-12 22:20:40,193 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 217 transitions, 4232 flow. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:40,193 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:20:40,193 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 28 [2021-08-12 22:20:40,193 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:20:40,337 INFO L129 PetriNetUnfolder]: 250/585 cut-off events. [2021-08-12 22:20:40,337 INFO L130 PetriNetUnfolder]: For 1803/2289 co-relation queries the response was YES. [2021-08-12 22:20:40,339 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4660 conditions, 585 events. 250/585 cut-off events. For 1803/2289 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 3577 event pairs, 0 based on Foata normal form. 7/383 useless extension candidates. Maximal degree in co-relation 4404. Up to 296 conditions per place. [2021-08-12 22:20:40,344 INFO L132 encePairwiseOnDemand]: 21/28 looper letters, 114 selfloop transitions, 22 changer transitions 22/218 dead transitions. [2021-08-12 22:20:40,344 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 218 transitions, 4546 flow [2021-08-12 22:20:40,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-12 22:20:40,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-12 22:20:40,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 106 transitions. [2021-08-12 22:20:40,345 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7571428571428571 [2021-08-12 22:20:40,345 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 106 transitions. [2021-08-12 22:20:40,345 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 106 transitions. [2021-08-12 22:20:40,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:20:40,346 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 106 transitions. [2021-08-12 22:20:40,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:40,346 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:40,347 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:40,347 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 44 predicate places. [2021-08-12 22:20:40,347 INFO L482 AbstractCegarLoop]: Abstraction has has 71 places, 218 transitions, 4546 flow [2021-08-12 22:20:40,347 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:40,347 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:20:40,347 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:20:40,347 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-08-12 22:20:40,347 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:20:40,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:20:40,348 INFO L82 PathProgramCache]: Analyzing trace with hash -1853722882, now seen corresponding path program 3 times [2021-08-12 22:20:40,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:20:40,348 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36957253] [2021-08-12 22:20:40,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:20:40,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:20:40,372 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:40,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:40,374 INFO L142 QuantifierPusher]: treesize reduction 19, result has 44.1 percent of original size [2021-08-12 22:20:40,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-12 22:20:40,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:40,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-12 22:20:40,395 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:40,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 22:20:40,401 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:40,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:40,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:20:40,402 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:20:40,402 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36957253] [2021-08-12 22:20:40,402 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36957253] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:20:40,402 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:20:40,402 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-12 22:20:40,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465982914] [2021-08-12 22:20:40,403 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-08-12 22:20:40,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:20:40,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-12 22:20:40,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-12 22:20:40,403 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 28 [2021-08-12 22:20:40,403 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 218 transitions, 4546 flow. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:40,403 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:20:40,404 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 28 [2021-08-12 22:20:40,404 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:20:40,545 INFO L129 PetriNetUnfolder]: 250/596 cut-off events. [2021-08-12 22:20:40,545 INFO L130 PetriNetUnfolder]: For 1818/1976 co-relation queries the response was YES. [2021-08-12 22:20:40,546 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4998 conditions, 596 events. 250/596 cut-off events. For 1818/1976 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 3708 event pairs, 0 based on Foata normal form. 5/392 useless extension candidates. Maximal degree in co-relation 4741. Up to 295 conditions per place. [2021-08-12 22:20:40,552 INFO L132 encePairwiseOnDemand]: 21/28 looper letters, 120 selfloop transitions, 29 changer transitions 28/217 dead transitions. [2021-08-12 22:20:40,552 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 217 transitions, 4868 flow [2021-08-12 22:20:40,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-12 22:20:40,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-12 22:20:40,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 105 transitions. [2021-08-12 22:20:40,553 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.75 [2021-08-12 22:20:40,553 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 105 transitions. [2021-08-12 22:20:40,554 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 105 transitions. [2021-08-12 22:20:40,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:20:40,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 105 transitions. [2021-08-12 22:20:40,554 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:40,555 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:40,555 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:40,555 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 48 predicate places. [2021-08-12 22:20:40,555 INFO L482 AbstractCegarLoop]: Abstraction has has 75 places, 217 transitions, 4868 flow [2021-08-12 22:20:40,555 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:40,555 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:20:40,555 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:20:40,556 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-08-12 22:20:40,556 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:20:40,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:20:40,556 INFO L82 PathProgramCache]: Analyzing trace with hash 1712065561, now seen corresponding path program 1 times [2021-08-12 22:20:40,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:20:40,556 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469986345] [2021-08-12 22:20:40,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:20:40,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:20:40,570 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:40,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:40,571 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:40,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:20:40,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:40,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-12 22:20:40,582 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:40,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 22:20:40,590 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:40,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:40,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:20:40,591 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:20:40,591 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469986345] [2021-08-12 22:20:40,591 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469986345] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:20:40,591 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:20:40,591 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-12 22:20:40,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864772216] [2021-08-12 22:20:40,592 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-08-12 22:20:40,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:20:40,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-12 22:20:40,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-12 22:20:40,593 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 28 [2021-08-12 22:20:40,593 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 217 transitions, 4868 flow. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:40,594 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:20:40,594 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 28 [2021-08-12 22:20:40,594 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:20:40,727 INFO L129 PetriNetUnfolder]: 266/643 cut-off events. [2021-08-12 22:20:40,728 INFO L130 PetriNetUnfolder]: For 2271/2433 co-relation queries the response was YES. [2021-08-12 22:20:40,729 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5780 conditions, 643 events. 266/643 cut-off events. For 2271/2433 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 4139 event pairs, 0 based on Foata normal form. 3/423 useless extension candidates. Maximal degree in co-relation 5473. Up to 295 conditions per place. [2021-08-12 22:20:40,738 INFO L132 encePairwiseOnDemand]: 21/28 looper letters, 167 selfloop transitions, 21 changer transitions 29/263 dead transitions. [2021-08-12 22:20:40,738 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 263 transitions, 6330 flow [2021-08-12 22:20:40,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-12 22:20:40,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-12 22:20:40,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 108 transitions. [2021-08-12 22:20:40,739 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7714285714285715 [2021-08-12 22:20:40,740 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 108 transitions. [2021-08-12 22:20:40,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 108 transitions. [2021-08-12 22:20:40,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:20:40,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 108 transitions. [2021-08-12 22:20:40,740 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 21.6) internal successors, (108), 5 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) [2021-08-12 22:20:40,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:40,741 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:40,741 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 52 predicate places. [2021-08-12 22:20:40,741 INFO L482 AbstractCegarLoop]: Abstraction has has 79 places, 263 transitions, 6330 flow [2021-08-12 22:20:40,741 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:40,741 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:20:40,741 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:20:40,741 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-08-12 22:20:40,741 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:20:40,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:20:40,742 INFO L82 PathProgramCache]: Analyzing trace with hash 1177053361, now seen corresponding path program 2 times [2021-08-12 22:20:40,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:20:40,742 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920370000] [2021-08-12 22:20:40,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:20:40,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:20:40,761 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:40,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:40,762 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:40,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:20:40,765 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:40,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:20:40,771 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:40,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 22:20:40,778 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:40,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:40,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:20:40,778 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:20:40,778 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920370000] [2021-08-12 22:20:40,778 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920370000] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:20:40,779 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:20:40,779 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-12 22:20:40,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302676340] [2021-08-12 22:20:40,779 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-08-12 22:20:40,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:20:40,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-12 22:20:40,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-12 22:20:40,780 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 28 [2021-08-12 22:20:40,780 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 263 transitions, 6330 flow. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:40,780 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:20:40,780 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 28 [2021-08-12 22:20:40,780 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:20:40,961 INFO L129 PetriNetUnfolder]: 342/838 cut-off events. [2021-08-12 22:20:40,961 INFO L130 PetriNetUnfolder]: For 3094/3155 co-relation queries the response was YES. [2021-08-12 22:20:40,964 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7931 conditions, 838 events. 342/838 cut-off events. For 3094/3155 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 5756 event pairs, 0 based on Foata normal form. 4/558 useless extension candidates. Maximal degree in co-relation 7480. Up to 405 conditions per place. [2021-08-12 22:20:40,973 INFO L132 encePairwiseOnDemand]: 20/28 looper letters, 163 selfloop transitions, 71 changer transitions 32/312 dead transitions. [2021-08-12 22:20:40,973 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 312 transitions, 8030 flow [2021-08-12 22:20:40,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-12 22:20:40,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-08-12 22:20:40,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 137 transitions. [2021-08-12 22:20:40,974 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8154761904761905 [2021-08-12 22:20:40,974 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 137 transitions. [2021-08-12 22:20:40,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 137 transitions. [2021-08-12 22:20:40,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:20:40,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 137 transitions. [2021-08-12 22:20:40,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:40,976 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 28.0) internal successors, (196), 7 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:40,976 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 28.0) internal successors, (196), 7 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:40,976 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 57 predicate places. [2021-08-12 22:20:40,976 INFO L482 AbstractCegarLoop]: Abstraction has has 84 places, 312 transitions, 8030 flow [2021-08-12 22:20:40,976 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:40,977 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:20:40,977 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:20:40,977 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-08-12 22:20:40,977 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:20:40,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:20:40,977 INFO L82 PathProgramCache]: Analyzing trace with hash -1167002833, now seen corresponding path program 4 times [2021-08-12 22:20:40,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:20:40,977 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898788557] [2021-08-12 22:20:40,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:20:40,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:20:40,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:40,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:40,998 INFO L142 QuantifierPusher]: treesize reduction 19, result has 44.1 percent of original size [2021-08-12 22:20:40,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-12 22:20:41,008 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:41,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-08-12 22:20:41,016 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:41,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-12 22:20:41,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:41,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:41,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:20:41,024 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:20:41,024 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898788557] [2021-08-12 22:20:41,024 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898788557] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:20:41,024 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:20:41,024 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-12 22:20:41,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282296507] [2021-08-12 22:20:41,024 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-08-12 22:20:41,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:20:41,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-12 22:20:41,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-12 22:20:41,025 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 28 [2021-08-12 22:20:41,026 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 312 transitions, 8030 flow. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:41,026 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:20:41,026 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 28 [2021-08-12 22:20:41,026 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:20:41,201 INFO L129 PetriNetUnfolder]: 342/840 cut-off events. [2021-08-12 22:20:41,201 INFO L130 PetriNetUnfolder]: For 4257/4820 co-relation queries the response was YES. [2021-08-12 22:20:41,203 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8313 conditions, 840 events. 342/840 cut-off events. For 4257/4820 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 5796 event pairs, 0 based on Foata normal form. 8/563 useless extension candidates. Maximal degree in co-relation 7856. Up to 405 conditions per place. [2021-08-12 22:20:41,212 INFO L132 encePairwiseOnDemand]: 24/28 looper letters, 171 selfloop transitions, 12 changer transitions 36/311 dead transitions. [2021-08-12 22:20:41,212 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 311 transitions, 8418 flow [2021-08-12 22:20:41,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-12 22:20:41,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-12 22:20:41,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 102 transitions. [2021-08-12 22:20:41,213 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7285714285714285 [2021-08-12 22:20:41,213 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 102 transitions. [2021-08-12 22:20:41,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 102 transitions. [2021-08-12 22:20:41,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:20:41,214 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 102 transitions. [2021-08-12 22:20:41,214 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) [2021-08-12 22:20:41,214 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:41,215 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:41,215 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 61 predicate places. [2021-08-12 22:20:41,215 INFO L482 AbstractCegarLoop]: Abstraction has has 88 places, 311 transitions, 8418 flow [2021-08-12 22:20:41,215 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:41,215 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:20:41,215 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:20:41,215 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-08-12 22:20:41,215 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:20:41,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:20:41,216 INFO L82 PathProgramCache]: Analyzing trace with hash 1689590112, now seen corresponding path program 4 times [2021-08-12 22:20:41,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:20:41,216 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621966248] [2021-08-12 22:20:41,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:20:41,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:20:41,225 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:41,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:41,226 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:41,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:20:41,229 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:41,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:20:41,235 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:41,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 22:20:41,241 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:41,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:41,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:20:41,242 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:20:41,242 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621966248] [2021-08-12 22:20:41,242 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621966248] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:20:41,242 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:20:41,242 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-12 22:20:41,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089850578] [2021-08-12 22:20:41,243 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-08-12 22:20:41,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:20:41,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-12 22:20:41,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-12 22:20:41,244 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 28 [2021-08-12 22:20:41,244 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 311 transitions, 8418 flow. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:41,244 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:20:41,244 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 28 [2021-08-12 22:20:41,244 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:20:41,457 INFO L129 PetriNetUnfolder]: 410/1002 cut-off events. [2021-08-12 22:20:41,457 INFO L130 PetriNetUnfolder]: For 5244/5767 co-relation queries the response was YES. [2021-08-12 22:20:41,460 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10378 conditions, 1002 events. 410/1002 cut-off events. For 5244/5767 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 7081 event pairs, 0 based on Foata normal form. 17/682 useless extension candidates. Maximal degree in co-relation 9817. Up to 491 conditions per place. [2021-08-12 22:20:41,469 INFO L132 encePairwiseOnDemand]: 20/28 looper letters, 163 selfloop transitions, 79 changer transitions 41/347 dead transitions. [2021-08-12 22:20:41,469 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 347 transitions, 9952 flow [2021-08-12 22:20:41,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-12 22:20:41,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-08-12 22:20:41,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 137 transitions. [2021-08-12 22:20:41,470 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8154761904761905 [2021-08-12 22:20:41,470 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 137 transitions. [2021-08-12 22:20:41,470 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 137 transitions. [2021-08-12 22:20:41,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:20:41,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 137 transitions. [2021-08-12 22:20:41,471 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:41,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 28.0) internal successors, (196), 7 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:41,472 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 28.0) internal successors, (196), 7 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:41,472 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 66 predicate places. [2021-08-12 22:20:41,472 INFO L482 AbstractCegarLoop]: Abstraction has has 93 places, 347 transitions, 9952 flow [2021-08-12 22:20:41,472 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:41,472 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:20:41,472 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:20:41,472 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-08-12 22:20:41,472 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:20:41,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:20:41,473 INFO L82 PathProgramCache]: Analyzing trace with hash -65387851, now seen corresponding path program 3 times [2021-08-12 22:20:41,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:20:41,473 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304959816] [2021-08-12 22:20:41,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:20:41,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:20:41,482 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:41,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:41,484 INFO L142 QuantifierPusher]: treesize reduction 7, result has 79.4 percent of original size [2021-08-12 22:20:41,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-12 22:20:41,503 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:41,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-12 22:20:41,510 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:41,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 22:20:41,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:41,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:41,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:20:41,517 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:20:41,517 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304959816] [2021-08-12 22:20:41,517 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304959816] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:20:41,517 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:20:41,517 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-12 22:20:41,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839710577] [2021-08-12 22:20:41,518 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-08-12 22:20:41,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:20:41,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-12 22:20:41,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-12 22:20:41,519 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 28 [2021-08-12 22:20:41,519 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 347 transitions, 9952 flow. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:41,519 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:20:41,519 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 28 [2021-08-12 22:20:41,519 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:20:41,759 INFO L129 PetriNetUnfolder]: 410/994 cut-off events. [2021-08-12 22:20:41,759 INFO L130 PetriNetUnfolder]: For 5086/5165 co-relation queries the response was YES. [2021-08-12 22:20:41,762 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10911 conditions, 994 events. 410/994 cut-off events. For 5086/5165 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 6947 event pairs, 0 based on Foata normal form. 1/659 useless extension candidates. Maximal degree in co-relation 10343. Up to 491 conditions per place. [2021-08-12 22:20:41,771 INFO L132 encePairwiseOnDemand]: 21/28 looper letters, 227 selfloop transitions, 19 changer transitions 44/346 dead transitions. [2021-08-12 22:20:41,771 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 346 transitions, 10490 flow [2021-08-12 22:20:41,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-12 22:20:41,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-12 22:20:41,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 106 transitions. [2021-08-12 22:20:41,773 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7571428571428571 [2021-08-12 22:20:41,773 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 106 transitions. [2021-08-12 22:20:41,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 106 transitions. [2021-08-12 22:20:41,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:20:41,773 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 106 transitions. [2021-08-12 22:20:41,773 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:41,774 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:41,774 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:41,774 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 70 predicate places. [2021-08-12 22:20:41,774 INFO L482 AbstractCegarLoop]: Abstraction has has 97 places, 346 transitions, 10490 flow [2021-08-12 22:20:41,774 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:41,774 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:20:41,774 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:20:41,774 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-08-12 22:20:41,775 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:20:41,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:20:41,775 INFO L82 PathProgramCache]: Analyzing trace with hash 2071940971, now seen corresponding path program 5 times [2021-08-12 22:20:41,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:20:41,775 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574601123] [2021-08-12 22:20:41,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:20:41,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:20:41,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:41,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:41,786 INFO L142 QuantifierPusher]: treesize reduction 7, result has 79.4 percent of original size [2021-08-12 22:20:41,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-12 22:20:41,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:41,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-12 22:20:41,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:41,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-12 22:20:41,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:41,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:41,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:20:41,818 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:20:41,818 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574601123] [2021-08-12 22:20:41,818 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574601123] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:20:41,818 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:20:41,819 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-12 22:20:41,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387592180] [2021-08-12 22:20:41,819 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-08-12 22:20:41,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:20:41,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-12 22:20:41,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-12 22:20:41,820 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 28 [2021-08-12 22:20:41,820 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 346 transitions, 10490 flow. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:41,820 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:20:41,820 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 28 [2021-08-12 22:20:41,820 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:20:42,050 INFO L129 PetriNetUnfolder]: 434/1067 cut-off events. [2021-08-12 22:20:42,050 INFO L130 PetriNetUnfolder]: For 6866/7143 co-relation queries the response was YES. [2021-08-12 22:20:42,053 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12145 conditions, 1067 events. 434/1067 cut-off events. For 6866/7143 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 7711 event pairs, 0 based on Foata normal form. 1/710 useless extension candidates. Maximal degree in co-relation 11484. Up to 512 conditions per place. [2021-08-12 22:20:42,063 INFO L132 encePairwiseOnDemand]: 21/28 looper letters, 186 selfloop transitions, 21 changer transitions 48/359 dead transitions. [2021-08-12 22:20:42,063 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 359 transitions, 11396 flow [2021-08-12 22:20:42,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-12 22:20:42,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-12 22:20:42,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 106 transitions. [2021-08-12 22:20:42,064 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7571428571428571 [2021-08-12 22:20:42,064 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 106 transitions. [2021-08-12 22:20:42,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 106 transitions. [2021-08-12 22:20:42,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:20:42,064 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 106 transitions. [2021-08-12 22:20:42,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:42,065 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:42,065 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:42,065 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 74 predicate places. [2021-08-12 22:20:42,066 INFO L482 AbstractCegarLoop]: Abstraction has has 101 places, 359 transitions, 11396 flow [2021-08-12 22:20:42,066 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:42,066 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:20:42,066 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:20:42,066 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-08-12 22:20:42,066 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:20:42,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:20:42,067 INFO L82 PathProgramCache]: Analyzing trace with hash 1209589631, now seen corresponding path program 4 times [2021-08-12 22:20:42,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:20:42,067 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454614311] [2021-08-12 22:20:42,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:20:42,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:20:42,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:42,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:42,105 INFO L142 QuantifierPusher]: treesize reduction 19, result has 44.1 percent of original size [2021-08-12 22:20:42,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-12 22:20:42,117 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:42,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-12 22:20:42,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:42,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 22:20:42,137 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:42,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:42,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:20:42,138 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:20:42,138 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454614311] [2021-08-12 22:20:42,138 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454614311] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:20:42,138 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:20:42,139 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-12 22:20:42,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442789627] [2021-08-12 22:20:42,139 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-08-12 22:20:42,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:20:42,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-12 22:20:42,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-12 22:20:42,140 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 28 [2021-08-12 22:20:42,140 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 359 transitions, 11396 flow. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:42,140 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:20:42,140 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 28 [2021-08-12 22:20:42,140 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:20:42,373 INFO L129 PetriNetUnfolder]: 434/1065 cut-off events. [2021-08-12 22:20:42,373 INFO L130 PetriNetUnfolder]: For 7479/7798 co-relation queries the response was YES. [2021-08-12 22:20:42,376 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12710 conditions, 1065 events. 434/1065 cut-off events. For 7479/7798 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 7717 event pairs, 0 based on Foata normal form. 1/708 useless extension candidates. Maximal degree in co-relation 12042. Up to 512 conditions per place. [2021-08-12 22:20:42,385 INFO L132 encePairwiseOnDemand]: 21/28 looper letters, 220 selfloop transitions, 24 changer transitions 54/358 dead transitions. [2021-08-12 22:20:42,386 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 358 transitions, 11938 flow [2021-08-12 22:20:42,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-12 22:20:42,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-12 22:20:42,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 105 transitions. [2021-08-12 22:20:42,387 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.75 [2021-08-12 22:20:42,387 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 105 transitions. [2021-08-12 22:20:42,387 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 105 transitions. [2021-08-12 22:20:42,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:20:42,387 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 105 transitions. [2021-08-12 22:20:42,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:42,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:42,388 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:42,388 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 78 predicate places. [2021-08-12 22:20:42,388 INFO L482 AbstractCegarLoop]: Abstraction has has 105 places, 358 transitions, 11938 flow [2021-08-12 22:20:42,389 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:42,389 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:20:42,389 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:20:42,389 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-08-12 22:20:42,389 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:20:42,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:20:42,389 INFO L82 PathProgramCache]: Analyzing trace with hash 173450159, now seen corresponding path program 6 times [2021-08-12 22:20:42,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:20:42,390 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187512360] [2021-08-12 22:20:42,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:20:42,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:20:42,398 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:42,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:42,399 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:42,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:20:42,402 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:42,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-12 22:20:42,408 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:42,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-12 22:20:42,414 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:42,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:42,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:20:42,415 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:20:42,415 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187512360] [2021-08-12 22:20:42,415 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187512360] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:20:42,415 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:20:42,415 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-12 22:20:42,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801567302] [2021-08-12 22:20:42,416 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-08-12 22:20:42,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:20:42,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-12 22:20:42,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-12 22:20:42,416 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 28 [2021-08-12 22:20:42,417 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 358 transitions, 11938 flow. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:42,417 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:20:42,417 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 28 [2021-08-12 22:20:42,417 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:20:42,648 INFO L129 PetriNetUnfolder]: 442/1083 cut-off events. [2021-08-12 22:20:42,649 INFO L130 PetriNetUnfolder]: For 8720/9446 co-relation queries the response was YES. [2021-08-12 22:20:42,652 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13387 conditions, 1083 events. 442/1083 cut-off events. For 8720/9446 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 7823 event pairs, 0 based on Foata normal form. 1/719 useless extension candidates. Maximal degree in co-relation 12714. Up to 523 conditions per place. [2021-08-12 22:20:42,662 INFO L132 encePairwiseOnDemand]: 21/28 looper letters, 177 selfloop transitions, 24 changer transitions 60/361 dead transitions. [2021-08-12 22:20:42,662 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 361 transitions, 12516 flow [2021-08-12 22:20:42,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-12 22:20:42,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-12 22:20:42,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 108 transitions. [2021-08-12 22:20:42,663 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7714285714285715 [2021-08-12 22:20:42,663 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 108 transitions. [2021-08-12 22:20:42,663 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 108 transitions. [2021-08-12 22:20:42,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:20:42,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 108 transitions. [2021-08-12 22:20:42,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 21.6) internal successors, (108), 5 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) [2021-08-12 22:20:42,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:42,664 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:42,664 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 82 predicate places. [2021-08-12 22:20:42,664 INFO L482 AbstractCegarLoop]: Abstraction has has 109 places, 361 transitions, 12516 flow [2021-08-12 22:20:42,665 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:42,665 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:20:42,665 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:20:42,665 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-08-12 22:20:42,665 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:20:42,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:20:42,665 INFO L82 PathProgramCache]: Analyzing trace with hash -224603488, now seen corresponding path program 5 times [2021-08-12 22:20:42,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:20:42,666 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184672782] [2021-08-12 22:20:42,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:20:42,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:20:42,674 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:42,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:42,677 INFO L142 QuantifierPusher]: treesize reduction 26, result has 21.2 percent of original size [2021-08-12 22:20:42,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:20:42,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:42,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:20:42,689 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:42,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 22:20:42,696 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:42,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:42,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:20:42,697 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:20:42,697 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184672782] [2021-08-12 22:20:42,697 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184672782] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:20:42,697 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:20:42,697 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-12 22:20:42,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352685682] [2021-08-12 22:20:42,697 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-08-12 22:20:42,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:20:42,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-12 22:20:42,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-12 22:20:42,698 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 28 [2021-08-12 22:20:42,698 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 361 transitions, 12516 flow. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:42,699 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:20:42,699 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 28 [2021-08-12 22:20:42,699 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:20:43,008 INFO L129 PetriNetUnfolder]: 446/1097 cut-off events. [2021-08-12 22:20:43,008 INFO L130 PetriNetUnfolder]: For 9199/9626 co-relation queries the response was YES. [2021-08-12 22:20:43,011 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14129 conditions, 1097 events. 446/1097 cut-off events. For 9199/9626 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 7980 event pairs, 0 based on Foata normal form. 7/735 useless extension candidates. Maximal degree in co-relation 13428. Up to 523 conditions per place. [2021-08-12 22:20:43,021 INFO L132 encePairwiseOnDemand]: 20/28 looper letters, 140 selfloop transitions, 98 changer transitions 61/363 dead transitions. [2021-08-12 22:20:43,021 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 363 transitions, 13166 flow [2021-08-12 22:20:43,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-12 22:20:43,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-08-12 22:20:43,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 137 transitions. [2021-08-12 22:20:43,022 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8154761904761905 [2021-08-12 22:20:43,022 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 137 transitions. [2021-08-12 22:20:43,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 137 transitions. [2021-08-12 22:20:43,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:20:43,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 137 transitions. [2021-08-12 22:20:43,027 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:43,028 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 28.0) internal successors, (196), 7 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:43,028 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 28.0) internal successors, (196), 7 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:43,028 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 87 predicate places. [2021-08-12 22:20:43,028 INFO L482 AbstractCegarLoop]: Abstraction has has 114 places, 363 transitions, 13166 flow [2021-08-12 22:20:43,029 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:43,029 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:20:43,029 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:20:43,029 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-08-12 22:20:43,029 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:20:43,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:20:43,030 INFO L82 PathProgramCache]: Analyzing trace with hash 2014679415, now seen corresponding path program 5 times [2021-08-12 22:20:43,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:20:43,030 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907343901] [2021-08-12 22:20:43,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:20:43,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:20:43,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:43,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:43,040 INFO L142 QuantifierPusher]: treesize reduction 26, result has 21.2 percent of original size [2021-08-12 22:20:43,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:20:43,046 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:43,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-12 22:20:43,054 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:43,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 22:20:43,061 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:43,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:43,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:20:43,062 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:20:43,062 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907343901] [2021-08-12 22:20:43,062 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907343901] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:20:43,062 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:20:43,062 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-12 22:20:43,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546739987] [2021-08-12 22:20:43,062 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-08-12 22:20:43,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:20:43,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-12 22:20:43,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-12 22:20:43,063 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 28 [2021-08-12 22:20:43,064 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 363 transitions, 13166 flow. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:43,064 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:20:43,064 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 28 [2021-08-12 22:20:43,064 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:20:43,300 INFO L129 PetriNetUnfolder]: 446/1095 cut-off events. [2021-08-12 22:20:43,300 INFO L130 PetriNetUnfolder]: For 10330/11092 co-relation queries the response was YES. [2021-08-12 22:20:43,303 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14699 conditions, 1095 events. 446/1095 cut-off events. For 10330/11092 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 7958 event pairs, 0 based on Foata normal form. 1/727 useless extension candidates. Maximal degree in co-relation 13996. Up to 523 conditions per place. [2021-08-12 22:20:43,313 INFO L132 encePairwiseOnDemand]: 21/28 looper letters, 162 selfloop transitions, 71 changer transitions 65/362 dead transitions. [2021-08-12 22:20:43,314 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 362 transitions, 13698 flow [2021-08-12 22:20:43,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-12 22:20:43,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-12 22:20:43,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 108 transitions. [2021-08-12 22:20:43,316 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7714285714285715 [2021-08-12 22:20:43,316 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 108 transitions. [2021-08-12 22:20:43,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 108 transitions. [2021-08-12 22:20:43,316 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:20:43,316 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 108 transitions. [2021-08-12 22:20:43,317 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 21.6) internal successors, (108), 5 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) [2021-08-12 22:20:43,317 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:43,317 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:43,317 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 91 predicate places. [2021-08-12 22:20:43,317 INFO L482 AbstractCegarLoop]: Abstraction has has 118 places, 362 transitions, 13698 flow [2021-08-12 22:20:43,317 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:43,317 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:20:43,318 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:20:43,318 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-08-12 22:20:43,318 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:20:43,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:20:43,318 INFO L82 PathProgramCache]: Analyzing trace with hash -1794947823, now seen corresponding path program 6 times [2021-08-12 22:20:43,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:20:43,318 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087400536] [2021-08-12 22:20:43,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:20:43,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:20:43,334 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:43,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:43,337 INFO L142 QuantifierPusher]: treesize reduction 26, result has 21.2 percent of original size [2021-08-12 22:20:43,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:20:43,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:43,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:20:43,352 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:43,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 22:20:43,359 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:43,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:43,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:20:43,360 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:20:43,360 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087400536] [2021-08-12 22:20:43,360 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087400536] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:20:43,360 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:20:43,361 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-12 22:20:43,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32345248] [2021-08-12 22:20:43,361 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-08-12 22:20:43,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:20:43,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-12 22:20:43,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-12 22:20:43,364 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 28 [2021-08-12 22:20:43,364 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 362 transitions, 13698 flow. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:43,364 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:20:43,364 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 28 [2021-08-12 22:20:43,364 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:20:43,670 INFO L129 PetriNetUnfolder]: 446/1091 cut-off events. [2021-08-12 22:20:43,670 INFO L130 PetriNetUnfolder]: For 9632/9773 co-relation queries the response was YES. [2021-08-12 22:20:43,673 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15263 conditions, 1091 events. 446/1091 cut-off events. For 9632/9773 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 7885 event pairs, 0 based on Foata normal form. 1/725 useless extension candidates. Maximal degree in co-relation 14560. Up to 523 conditions per place. [2021-08-12 22:20:43,683 INFO L132 encePairwiseOnDemand]: 20/28 looper letters, 136 selfloop transitions, 97 changer transitions 68/363 dead transitions. [2021-08-12 22:20:43,683 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 363 transitions, 14302 flow [2021-08-12 22:20:43,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-12 22:20:43,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-08-12 22:20:43,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 137 transitions. [2021-08-12 22:20:43,684 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8154761904761905 [2021-08-12 22:20:43,684 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 137 transitions. [2021-08-12 22:20:43,685 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 137 transitions. [2021-08-12 22:20:43,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:20:43,685 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 137 transitions. [2021-08-12 22:20:43,685 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:43,686 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 28.0) internal successors, (196), 7 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:43,686 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 28.0) internal successors, (196), 7 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:43,686 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 96 predicate places. [2021-08-12 22:20:43,686 INFO L482 AbstractCegarLoop]: Abstraction has has 123 places, 363 transitions, 14302 flow [2021-08-12 22:20:43,686 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:43,686 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:20:43,686 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:20:43,686 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-08-12 22:20:43,686 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:20:43,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:20:43,687 INFO L82 PathProgramCache]: Analyzing trace with hash 908316010, now seen corresponding path program 6 times [2021-08-12 22:20:43,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:20:43,687 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084250363] [2021-08-12 22:20:43,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:20:43,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:20:43,698 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:43,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:43,700 INFO L142 QuantifierPusher]: treesize reduction 26, result has 21.2 percent of original size [2021-08-12 22:20:43,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:20:43,705 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:43,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-12 22:20:43,713 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:43,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 22:20:43,719 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:43,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:43,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:20:43,723 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:20:43,723 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084250363] [2021-08-12 22:20:43,723 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084250363] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:20:43,723 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:20:43,723 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-12 22:20:43,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132433293] [2021-08-12 22:20:43,724 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-08-12 22:20:43,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:20:43,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-12 22:20:43,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-12 22:20:43,725 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 28 [2021-08-12 22:20:43,725 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 363 transitions, 14302 flow. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:43,726 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:20:43,726 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 28 [2021-08-12 22:20:43,726 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:20:43,977 INFO L129 PetriNetUnfolder]: 446/1101 cut-off events. [2021-08-12 22:20:43,977 INFO L130 PetriNetUnfolder]: For 10163/10322 co-relation queries the response was YES. [2021-08-12 22:20:43,980 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15849 conditions, 1101 events. 446/1101 cut-off events. For 10163/10322 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 8087 event pairs, 0 based on Foata normal form. 1/735 useless extension candidates. Maximal degree in co-relation 15148. Up to 523 conditions per place. [2021-08-12 22:20:43,991 INFO L132 encePairwiseOnDemand]: 21/28 looper letters, 156 selfloop transitions, 70 changer transitions 74/362 dead transitions. [2021-08-12 22:20:43,991 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 362 transitions, 14830 flow [2021-08-12 22:20:43,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-12 22:20:43,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-12 22:20:43,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 107 transitions. [2021-08-12 22:20:43,992 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7642857142857142 [2021-08-12 22:20:43,993 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 107 transitions. [2021-08-12 22:20:43,993 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 107 transitions. [2021-08-12 22:20:43,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:20:43,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 107 transitions. [2021-08-12 22:20:43,993 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:43,994 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:43,994 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:43,994 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 100 predicate places. [2021-08-12 22:20:43,994 INFO L482 AbstractCegarLoop]: Abstraction has has 127 places, 362 transitions, 14830 flow [2021-08-12 22:20:43,994 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:43,994 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:20:43,994 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:20:43,994 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-08-12 22:20:43,995 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:20:43,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:20:43,995 INFO L82 PathProgramCache]: Analyzing trace with hash -130812639, now seen corresponding path program 1 times [2021-08-12 22:20:43,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:20:43,995 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889830299] [2021-08-12 22:20:43,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:20:43,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:20:44,016 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:44,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:44,017 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:44,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:20:44,020 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:44,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:20:44,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:44,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:44,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:20:44,024 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:20:44,025 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889830299] [2021-08-12 22:20:44,025 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889830299] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:20:44,025 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:20:44,025 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-12 22:20:44,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305365036] [2021-08-12 22:20:44,025 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-08-12 22:20:44,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:20:44,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-12 22:20:44,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-12 22:20:44,026 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 28 [2021-08-12 22:20:44,026 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 362 transitions, 14830 flow. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:44,026 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:20:44,026 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 28 [2021-08-12 22:20:44,026 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:20:44,264 INFO L129 PetriNetUnfolder]: 428/1045 cut-off events. [2021-08-12 22:20:44,264 INFO L130 PetriNetUnfolder]: For 12185/13193 co-relation queries the response was YES. [2021-08-12 22:20:44,268 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15492 conditions, 1045 events. 428/1045 cut-off events. For 12185/13193 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 7494 event pairs, 0 based on Foata normal form. 8/708 useless extension candidates. Maximal degree in co-relation 14818. Up to 519 conditions per place. [2021-08-12 22:20:44,278 INFO L132 encePairwiseOnDemand]: 22/28 looper letters, 25 selfloop transitions, 33 changer transitions 74/345 dead transitions. [2021-08-12 22:20:44,278 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 345 transitions, 14284 flow [2021-08-12 22:20:44,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-12 22:20:44,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-12 22:20:44,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 125 transitions. [2021-08-12 22:20:44,279 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8928571428571429 [2021-08-12 22:20:44,279 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 125 transitions. [2021-08-12 22:20:44,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 125 transitions. [2021-08-12 22:20:44,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:20:44,279 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 125 transitions. [2021-08-12 22:20:44,280 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:44,280 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:44,280 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:44,280 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 104 predicate places. [2021-08-12 22:20:44,280 INFO L482 AbstractCegarLoop]: Abstraction has has 131 places, 345 transitions, 14284 flow [2021-08-12 22:20:44,280 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:44,281 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:20:44,281 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:20:44,281 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-08-12 22:20:44,281 INFO L430 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:20:44,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:20:44,281 INFO L82 PathProgramCache]: Analyzing trace with hash -2052283487, now seen corresponding path program 1 times [2021-08-12 22:20:44,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:20:44,281 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017672635] [2021-08-12 22:20:44,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:20:44,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:20:44,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:44,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:44,289 INFO L142 QuantifierPusher]: treesize reduction 1, result has 90.0 percent of original size [2021-08-12 22:20:44,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 22:20:44,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:44,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-12 22:20:44,302 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:44,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:44,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:20:44,309 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:20:44,309 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017672635] [2021-08-12 22:20:44,309 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017672635] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:20:44,309 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:20:44,309 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-12 22:20:44,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131907105] [2021-08-12 22:20:44,310 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-08-12 22:20:44,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:20:44,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-12 22:20:44,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-12 22:20:44,311 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 28 [2021-08-12 22:20:44,311 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 345 transitions, 14284 flow. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:44,311 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:20:44,311 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 28 [2021-08-12 22:20:44,311 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:20:44,507 INFO L129 PetriNetUnfolder]: 412/992 cut-off events. [2021-08-12 22:20:44,508 INFO L130 PetriNetUnfolder]: For 11419/11834 co-relation queries the response was YES. [2021-08-12 22:20:44,511 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15035 conditions, 992 events. 412/992 cut-off events. For 11419/11834 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 6981 event pairs, 0 based on Foata normal form. 6/669 useless extension candidates. Maximal degree in co-relation 14416. Up to 491 conditions per place. [2021-08-12 22:20:44,520 INFO L132 encePairwiseOnDemand]: 23/28 looper letters, 38 selfloop transitions, 16 changer transitions 78/341 dead transitions. [2021-08-12 22:20:44,520 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 341 transitions, 14284 flow [2021-08-12 22:20:44,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-12 22:20:44,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-12 22:20:44,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 125 transitions. [2021-08-12 22:20:44,521 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8928571428571429 [2021-08-12 22:20:44,521 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 125 transitions. [2021-08-12 22:20:44,521 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 125 transitions. [2021-08-12 22:20:44,522 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:20:44,522 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 125 transitions. [2021-08-12 22:20:44,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:44,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:44,522 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:44,523 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 108 predicate places. [2021-08-12 22:20:44,523 INFO L482 AbstractCegarLoop]: Abstraction has has 135 places, 341 transitions, 14284 flow [2021-08-12 22:20:44,523 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:44,523 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:20:44,523 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:20:44,523 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-08-12 22:20:44,523 INFO L430 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:20:44,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:20:44,523 INFO L82 PathProgramCache]: Analyzing trace with hash -232544028, now seen corresponding path program 1 times [2021-08-12 22:20:44,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:20:44,524 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291254432] [2021-08-12 22:20:44,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:20:44,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:20:44,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:44,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:44,536 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:44,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:20:44,538 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:44,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-08-12 22:20:44,543 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:44,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:44,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:20:44,544 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:20:44,544 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291254432] [2021-08-12 22:20:44,544 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291254432] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:20:44,544 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:20:44,544 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-12 22:20:44,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004449803] [2021-08-12 22:20:44,545 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-08-12 22:20:44,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:20:44,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-12 22:20:44,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-12 22:20:44,546 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 28 [2021-08-12 22:20:44,546 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 341 transitions, 14284 flow. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:44,546 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:20:44,546 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 28 [2021-08-12 22:20:44,546 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:20:44,803 INFO L129 PetriNetUnfolder]: 390/949 cut-off events. [2021-08-12 22:20:44,803 INFO L130 PetriNetUnfolder]: For 11545/12325 co-relation queries the response was YES. [2021-08-12 22:20:44,807 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14378 conditions, 949 events. 390/949 cut-off events. For 11545/12325 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 6635 event pairs, 0 based on Foata normal form. 8/650 useless extension candidates. Maximal degree in co-relation 13842. Up to 475 conditions per place. [2021-08-12 22:20:44,817 INFO L132 encePairwiseOnDemand]: 23/28 looper letters, 30 selfloop transitions, 17 changer transitions 86/327 dead transitions. [2021-08-12 22:20:44,817 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 327 transitions, 13842 flow [2021-08-12 22:20:44,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-12 22:20:44,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-12 22:20:44,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 123 transitions. [2021-08-12 22:20:44,818 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8785714285714286 [2021-08-12 22:20:44,818 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 123 transitions. [2021-08-12 22:20:44,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 123 transitions. [2021-08-12 22:20:44,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:20:44,818 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 123 transitions. [2021-08-12 22:20:44,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:44,821 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:44,821 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:44,821 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 112 predicate places. [2021-08-12 22:20:44,821 INFO L482 AbstractCegarLoop]: Abstraction has has 139 places, 327 transitions, 13842 flow [2021-08-12 22:20:44,821 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:44,822 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:20:44,822 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:20:44,822 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-08-12 22:20:44,822 INFO L430 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:20:44,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:20:44,822 INFO L82 PathProgramCache]: Analyzing trace with hash 255294183, now seen corresponding path program 2 times [2021-08-12 22:20:44,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:20:44,822 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548479510] [2021-08-12 22:20:44,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:20:44,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:20:44,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:44,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:44,836 INFO L142 QuantifierPusher]: treesize reduction 1, result has 90.0 percent of original size [2021-08-12 22:20:44,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 22:20:44,842 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:44,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-12 22:20:44,849 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:44,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:44,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:20:44,849 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:20:44,849 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548479510] [2021-08-12 22:20:44,850 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548479510] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:20:44,850 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:20:44,850 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-12 22:20:44,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224245789] [2021-08-12 22:20:44,850 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-08-12 22:20:44,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:20:44,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-12 22:20:44,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-12 22:20:44,851 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 28 [2021-08-12 22:20:44,851 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 327 transitions, 13842 flow. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:44,851 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:20:44,851 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 28 [2021-08-12 22:20:44,851 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:20:45,041 INFO L129 PetriNetUnfolder]: 342/839 cut-off events. [2021-08-12 22:20:45,041 INFO L130 PetriNetUnfolder]: For 11148/11960 co-relation queries the response was YES. [2021-08-12 22:20:45,044 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12937 conditions, 839 events. 342/839 cut-off events. For 11148/11960 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 5795 event pairs, 0 based on Foata normal form. 13/585 useless extension candidates. Maximal degree in co-relation 12484. Up to 426 conditions per place. [2021-08-12 22:20:45,052 INFO L132 encePairwiseOnDemand]: 23/28 looper letters, 30 selfloop transitions, 10 changer transitions 93/296 dead transitions. [2021-08-12 22:20:45,052 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 296 transitions, 12722 flow [2021-08-12 22:20:45,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-12 22:20:45,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-12 22:20:45,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 125 transitions. [2021-08-12 22:20:45,053 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8928571428571429 [2021-08-12 22:20:45,053 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 125 transitions. [2021-08-12 22:20:45,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 125 transitions. [2021-08-12 22:20:45,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:20:45,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 125 transitions. [2021-08-12 22:20:45,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:45,054 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:45,054 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:45,054 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 116 predicate places. [2021-08-12 22:20:45,055 INFO L482 AbstractCegarLoop]: Abstraction has has 143 places, 296 transitions, 12722 flow [2021-08-12 22:20:45,055 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:45,055 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:20:45,055 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:20:45,055 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-08-12 22:20:45,055 INFO L430 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:20:45,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:20:45,055 INFO L82 PathProgramCache]: Analyzing trace with hash -1153422963, now seen corresponding path program 2 times [2021-08-12 22:20:45,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:20:45,056 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586043490] [2021-08-12 22:20:45,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:20:45,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:20:45,064 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:45,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:45,064 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:45,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:20:45,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:45,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:20:45,071 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:45,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:45,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:20:45,072 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:20:45,072 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586043490] [2021-08-12 22:20:45,072 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586043490] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:20:45,072 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:20:45,072 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-12 22:20:45,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151651710] [2021-08-12 22:20:45,073 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-08-12 22:20:45,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:20:45,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-12 22:20:45,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-12 22:20:45,073 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 28 [2021-08-12 22:20:45,074 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 296 transitions, 12722 flow. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:45,074 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:20:45,074 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 28 [2021-08-12 22:20:45,074 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:20:45,248 INFO L129 PetriNetUnfolder]: 328/812 cut-off events. [2021-08-12 22:20:45,248 INFO L130 PetriNetUnfolder]: For 10694/11032 co-relation queries the response was YES. [2021-08-12 22:20:45,251 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12582 conditions, 812 events. 328/812 cut-off events. For 10694/11032 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 5591 event pairs, 0 based on Foata normal form. 0/562 useless extension candidates. Maximal degree in co-relation 12184. Up to 404 conditions per place. [2021-08-12 22:20:45,258 INFO L132 encePairwiseOnDemand]: 23/28 looper letters, 18 selfloop transitions, 20 changer transitions 93/286 dead transitions. [2021-08-12 22:20:45,258 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 286 transitions, 12440 flow [2021-08-12 22:20:45,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-12 22:20:45,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-12 22:20:45,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 124 transitions. [2021-08-12 22:20:45,259 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8857142857142857 [2021-08-12 22:20:45,259 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 124 transitions. [2021-08-12 22:20:45,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 124 transitions. [2021-08-12 22:20:45,260 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:20:45,260 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 124 transitions. [2021-08-12 22:20:45,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:45,260 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:45,272 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:45,272 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 120 predicate places. [2021-08-12 22:20:45,272 INFO L482 AbstractCegarLoop]: Abstraction has has 147 places, 286 transitions, 12440 flow [2021-08-12 22:20:45,273 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:45,273 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:20:45,273 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:20:45,273 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-08-12 22:20:45,273 INFO L430 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:20:45,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:20:45,273 INFO L82 PathProgramCache]: Analyzing trace with hash -950365916, now seen corresponding path program 2 times [2021-08-12 22:20:45,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:20:45,274 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036783271] [2021-08-12 22:20:45,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:20:45,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:20:45,283 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:45,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:45,284 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:45,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-08-12 22:20:45,287 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:45,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-08-12 22:20:45,291 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:45,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:45,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:20:45,293 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:20:45,293 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036783271] [2021-08-12 22:20:45,293 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036783271] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:20:45,293 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:20:45,293 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-12 22:20:45,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713852526] [2021-08-12 22:20:45,293 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-08-12 22:20:45,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:20:45,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-12 22:20:45,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-12 22:20:45,294 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 28 [2021-08-12 22:20:45,295 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 286 transitions, 12440 flow. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:45,295 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:20:45,295 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 28 [2021-08-12 22:20:45,295 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:20:45,451 INFO L129 PetriNetUnfolder]: 318/786 cut-off events. [2021-08-12 22:20:45,451 INFO L130 PetriNetUnfolder]: For 11188/11562 co-relation queries the response was YES. [2021-08-12 22:20:45,454 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12354 conditions, 786 events. 318/786 cut-off events. For 11188/11562 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 5352 event pairs, 0 based on Foata normal form. 0/546 useless extension candidates. Maximal degree in co-relation 11983. Up to 404 conditions per place. [2021-08-12 22:20:45,460 INFO L132 encePairwiseOnDemand]: 24/28 looper letters, 29 selfloop transitions, 6 changer transitions 97/278 dead transitions. [2021-08-12 22:20:45,460 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 278 transitions, 12262 flow [2021-08-12 22:20:45,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-12 22:20:45,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-12 22:20:45,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 124 transitions. [2021-08-12 22:20:45,461 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8857142857142857 [2021-08-12 22:20:45,461 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 124 transitions. [2021-08-12 22:20:45,461 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 124 transitions. [2021-08-12 22:20:45,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:20:45,461 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 124 transitions. [2021-08-12 22:20:45,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:45,462 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:45,462 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:45,463 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 124 predicate places. [2021-08-12 22:20:45,463 INFO L482 AbstractCegarLoop]: Abstraction has has 151 places, 278 transitions, 12262 flow [2021-08-12 22:20:45,463 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:45,463 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:20:45,463 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:20:45,463 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-08-12 22:20:45,463 INFO L430 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:20:45,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:20:45,463 INFO L82 PathProgramCache]: Analyzing trace with hash 723490573, now seen corresponding path program 3 times [2021-08-12 22:20:45,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:20:45,464 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744694384] [2021-08-12 22:20:45,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:20:45,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:20:45,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:45,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:45,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:45,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:20:45,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:45,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-08-12 22:20:45,477 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:45,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:45,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:20:45,478 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:20:45,478 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744694384] [2021-08-12 22:20:45,478 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744694384] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:20:45,478 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:20:45,478 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-12 22:20:45,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809937496] [2021-08-12 22:20:45,478 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-08-12 22:20:45,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:20:45,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-12 22:20:45,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-12 22:20:45,479 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 28 [2021-08-12 22:20:45,479 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 278 transitions, 12262 flow. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:45,479 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:20:45,479 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 28 [2021-08-12 22:20:45,479 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:20:45,683 INFO L129 PetriNetUnfolder]: 302/740 cut-off events. [2021-08-12 22:20:45,683 INFO L130 PetriNetUnfolder]: For 12379/13183 co-relation queries the response was YES. [2021-08-12 22:20:45,686 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11866 conditions, 740 events. 302/740 cut-off events. For 12379/13183 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 4930 event pairs, 0 based on Foata normal form. 13/529 useless extension candidates. Maximal degree in co-relation 11550. Up to 377 conditions per place. [2021-08-12 22:20:45,692 INFO L132 encePairwiseOnDemand]: 23/28 looper letters, 18 selfloop transitions, 13 changer transitions 103/262 dead transitions. [2021-08-12 22:20:45,693 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 262 transitions, 11738 flow [2021-08-12 22:20:45,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-12 22:20:45,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-12 22:20:45,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 123 transitions. [2021-08-12 22:20:45,694 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8785714285714286 [2021-08-12 22:20:45,694 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 123 transitions. [2021-08-12 22:20:45,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 123 transitions. [2021-08-12 22:20:45,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:20:45,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 123 transitions. [2021-08-12 22:20:45,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:45,695 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:45,695 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:45,695 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 128 predicate places. [2021-08-12 22:20:45,695 INFO L482 AbstractCegarLoop]: Abstraction has has 155 places, 262 transitions, 11738 flow [2021-08-12 22:20:45,695 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:45,695 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:20:45,695 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:20:45,695 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-08-12 22:20:45,696 INFO L430 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:20:45,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:20:45,696 INFO L82 PathProgramCache]: Analyzing trace with hash 910701390, now seen corresponding path program 3 times [2021-08-12 22:20:45,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:20:45,696 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649338452] [2021-08-12 22:20:45,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:20:45,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:20:45,703 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:45,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:45,704 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:45,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:20:45,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:45,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-08-12 22:20:45,711 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:45,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:45,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:20:45,711 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:20:45,711 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649338452] [2021-08-12 22:20:45,712 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649338452] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:20:45,712 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:20:45,712 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-12 22:20:45,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056421114] [2021-08-12 22:20:45,712 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-08-12 22:20:45,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:20:45,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-12 22:20:45,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-12 22:20:45,713 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 28 [2021-08-12 22:20:45,713 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 262 transitions, 11738 flow. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:45,713 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:20:45,713 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 28 [2021-08-12 22:20:45,713 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:20:45,838 INFO L129 PetriNetUnfolder]: 250/623 cut-off events. [2021-08-12 22:20:45,838 INFO L130 PetriNetUnfolder]: For 11881/12642 co-relation queries the response was YES. [2021-08-12 22:20:45,840 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10211 conditions, 623 events. 250/623 cut-off events. For 11881/12642 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 4082 event pairs, 0 based on Foata normal form. 8/451 useless extension candidates. Maximal degree in co-relation 10006. Up to 333 conditions per place. [2021-08-12 22:20:45,844 INFO L132 encePairwiseOnDemand]: 23/28 looper letters, 18 selfloop transitions, 5 changer transitions 115/214 dead transitions. [2021-08-12 22:20:45,844 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 214 transitions, 9910 flow [2021-08-12 22:20:45,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-12 22:20:45,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-12 22:20:45,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 123 transitions. [2021-08-12 22:20:45,845 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8785714285714286 [2021-08-12 22:20:45,845 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 123 transitions. [2021-08-12 22:20:45,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 123 transitions. [2021-08-12 22:20:45,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:20:45,845 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 123 transitions. [2021-08-12 22:20:45,846 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:45,846 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:45,846 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:45,846 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 132 predicate places. [2021-08-12 22:20:45,846 INFO L482 AbstractCegarLoop]: Abstraction has has 159 places, 214 transitions, 9910 flow [2021-08-12 22:20:45,846 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:45,846 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:20:45,847 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:20:45,847 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-08-12 22:20:45,847 INFO L430 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:20:45,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:20:45,847 INFO L82 PathProgramCache]: Analyzing trace with hash 1357615634, now seen corresponding path program 1 times [2021-08-12 22:20:45,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:20:45,847 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511208101] [2021-08-12 22:20:45,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:20:45,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:20:45,855 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:45,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:45,857 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:45,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-12 22:20:45,860 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:45,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:20:45,864 INFO L142 QuantifierPusher]: treesize reduction 5, result has 61.5 percent of original size [2021-08-12 22:20:45,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-08-12 22:20:45,871 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:45,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-08-12 22:20:45,878 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:45,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 22:20:45,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:45,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:20:45,894 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:45,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:45,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:20:45,894 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:20:45,894 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511208101] [2021-08-12 22:20:45,894 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511208101] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:20:45,895 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:20:45,895 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-12 22:20:45,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807031605] [2021-08-12 22:20:45,895 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 22:20:45,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:20:45,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 22:20:45,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-08-12 22:20:45,896 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 28 [2021-08-12 22:20:45,896 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 214 transitions, 9910 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:45,896 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:20:45,896 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 28 [2021-08-12 22:20:45,896 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:20:46,188 INFO L129 PetriNetUnfolder]: 410/1032 cut-off events. [2021-08-12 22:20:46,189 INFO L130 PetriNetUnfolder]: For 18015/18581 co-relation queries the response was YES. [2021-08-12 22:20:46,193 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16787 conditions, 1032 events. 410/1032 cut-off events. For 18015/18581 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 7548 event pairs, 0 based on Foata normal form. 8/749 useless extension candidates. Maximal degree in co-relation 16360. Up to 598 conditions per place. [2021-08-12 22:20:46,201 INFO L132 encePairwiseOnDemand]: 18/28 looper letters, 168 selfloop transitions, 41 changer transitions 140/359 dead transitions. [2021-08-12 22:20:46,201 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 359 transitions, 17098 flow [2021-08-12 22:20:46,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 22:20:46,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-12 22:20:46,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2021-08-12 22:20:46,202 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.6964285714285714 [2021-08-12 22:20:46,202 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 156 transitions. [2021-08-12 22:20:46,202 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 156 transitions. [2021-08-12 22:20:46,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:20:46,202 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 156 transitions. [2021-08-12 22:20:46,203 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 19.5) internal successors, (156), 8 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:46,203 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:46,203 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:46,204 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 139 predicate places. [2021-08-12 22:20:46,204 INFO L482 AbstractCegarLoop]: Abstraction has has 166 places, 359 transitions, 17098 flow [2021-08-12 22:20:46,204 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:46,204 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:20:46,204 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:20:46,204 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-08-12 22:20:46,204 INFO L430 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:20:46,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:20:46,205 INFO L82 PathProgramCache]: Analyzing trace with hash 1109611416, now seen corresponding path program 2 times [2021-08-12 22:20:46,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:20:46,205 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503671715] [2021-08-12 22:20:46,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:20:46,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:20:46,213 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:46,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:46,214 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:46,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-12 22:20:46,216 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:46,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:20:46,221 INFO L142 QuantifierPusher]: treesize reduction 5, result has 61.5 percent of original size [2021-08-12 22:20:46,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-08-12 22:20:46,228 INFO L142 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size [2021-08-12 22:20:46,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:20:46,237 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:46,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:20:46,245 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:46,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:20:46,252 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:46,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:46,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:20:46,252 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:20:46,252 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503671715] [2021-08-12 22:20:46,252 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503671715] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:20:46,253 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:20:46,253 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-12 22:20:46,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539633290] [2021-08-12 22:20:46,253 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 22:20:46,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:20:46,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 22:20:46,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-12 22:20:46,254 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 28 [2021-08-12 22:20:46,254 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 359 transitions, 17098 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:46,254 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:20:46,254 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 28 [2021-08-12 22:20:46,254 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:20:46,575 INFO L129 PetriNetUnfolder]: 413/1060 cut-off events. [2021-08-12 22:20:46,575 INFO L130 PetriNetUnfolder]: For 19968/21182 co-relation queries the response was YES. [2021-08-12 22:20:46,579 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17702 conditions, 1060 events. 413/1060 cut-off events. For 19968/21182 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 7859 event pairs, 0 based on Foata normal form. 20/785 useless extension candidates. Maximal degree in co-relation 17231. Up to 607 conditions per place. [2021-08-12 22:20:46,588 INFO L132 encePairwiseOnDemand]: 18/28 looper letters, 173 selfloop transitions, 44 changer transitions 141/368 dead transitions. [2021-08-12 22:20:46,588 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 368 transitions, 18186 flow [2021-08-12 22:20:46,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 22:20:46,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-12 22:20:46,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2021-08-12 22:20:46,589 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7053571428571429 [2021-08-12 22:20:46,589 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 158 transitions. [2021-08-12 22:20:46,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 158 transitions. [2021-08-12 22:20:46,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:20:46,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 158 transitions. [2021-08-12 22:20:46,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 19.75) internal successors, (158), 8 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:46,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:46,590 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:46,591 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 146 predicate places. [2021-08-12 22:20:46,591 INFO L482 AbstractCegarLoop]: Abstraction has has 173 places, 368 transitions, 18186 flow [2021-08-12 22:20:46,591 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:46,591 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:20:46,591 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:20:46,591 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-08-12 22:20:46,591 INFO L430 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:20:46,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:20:46,591 INFO L82 PathProgramCache]: Analyzing trace with hash 207877758, now seen corresponding path program 3 times [2021-08-12 22:20:46,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:20:46,592 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968739466] [2021-08-12 22:20:46,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:20:46,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:20:46,603 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:46,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:46,604 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:46,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-12 22:20:46,607 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:46,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:20:46,611 INFO L142 QuantifierPusher]: treesize reduction 5, result has 61.5 percent of original size [2021-08-12 22:20:46,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-08-12 22:20:46,647 INFO L142 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size [2021-08-12 22:20:46,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:20:46,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:46,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 22:20:46,666 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:46,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:20:46,673 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:46,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:46,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:20:46,674 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:20:46,674 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968739466] [2021-08-12 22:20:46,674 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968739466] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:20:46,674 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:20:46,674 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-12 22:20:46,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843390952] [2021-08-12 22:20:46,675 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 22:20:46,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:20:46,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 22:20:46,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-12 22:20:46,676 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 28 [2021-08-12 22:20:46,676 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 368 transitions, 18186 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:46,676 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:20:46,676 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 28 [2021-08-12 22:20:46,676 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:20:46,990 INFO L129 PetriNetUnfolder]: 413/1062 cut-off events. [2021-08-12 22:20:46,990 INFO L130 PetriNetUnfolder]: For 20410/21730 co-relation queries the response was YES. [2021-08-12 22:20:46,995 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18382 conditions, 1062 events. 413/1062 cut-off events. For 20410/21730 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 7889 event pairs, 0 based on Foata normal form. 20/787 useless extension candidates. Maximal degree in co-relation 17927. Up to 606 conditions per place. [2021-08-12 22:20:47,002 INFO L132 encePairwiseOnDemand]: 18/28 looper letters, 172 selfloop transitions, 43 changer transitions 142/367 dead transitions. [2021-08-12 22:20:47,002 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 367 transitions, 18846 flow [2021-08-12 22:20:47,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 22:20:47,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-12 22:20:47,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2021-08-12 22:20:47,003 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7008928571428571 [2021-08-12 22:20:47,003 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 157 transitions. [2021-08-12 22:20:47,003 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 157 transitions. [2021-08-12 22:20:47,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:20:47,003 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 157 transitions. [2021-08-12 22:20:47,004 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 19.625) internal successors, (157), 8 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:47,005 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:47,005 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:47,005 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 153 predicate places. [2021-08-12 22:20:47,005 INFO L482 AbstractCegarLoop]: Abstraction has has 180 places, 367 transitions, 18846 flow [2021-08-12 22:20:47,005 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:47,005 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:20:47,005 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:20:47,005 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-08-12 22:20:47,005 INFO L430 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:20:47,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:20:47,006 INFO L82 PathProgramCache]: Analyzing trace with hash -676653376, now seen corresponding path program 4 times [2021-08-12 22:20:47,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:20:47,006 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044266266] [2021-08-12 22:20:47,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:20:47,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:20:47,019 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:47,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:47,020 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:47,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-12 22:20:47,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:47,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:20:47,027 INFO L142 QuantifierPusher]: treesize reduction 5, result has 61.5 percent of original size [2021-08-12 22:20:47,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-08-12 22:20:47,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:47,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:20:47,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:47,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:20:47,048 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:47,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:20:47,055 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:47,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:47,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:20:47,055 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:20:47,055 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044266266] [2021-08-12 22:20:47,056 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044266266] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:20:47,056 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:20:47,056 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-12 22:20:47,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677752210] [2021-08-12 22:20:47,056 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 22:20:47,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:20:47,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 22:20:47,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-08-12 22:20:47,058 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 28 [2021-08-12 22:20:47,058 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 367 transitions, 18846 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:47,058 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:20:47,058 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 28 [2021-08-12 22:20:47,058 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:20:47,363 INFO L129 PetriNetUnfolder]: 423/1101 cut-off events. [2021-08-12 22:20:47,363 INFO L130 PetriNetUnfolder]: For 22548/23974 co-relation queries the response was YES. [2021-08-12 22:20:47,367 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19766 conditions, 1101 events. 423/1101 cut-off events. For 22548/23974 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 8286 event pairs, 0 based on Foata normal form. 20/815 useless extension candidates. Maximal degree in co-relation 19201. Up to 633 conditions per place. [2021-08-12 22:20:47,375 INFO L132 encePairwiseOnDemand]: 18/28 looper letters, 195 selfloop transitions, 44 changer transitions 143/392 dead transitions. [2021-08-12 22:20:47,375 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 392 transitions, 20802 flow [2021-08-12 22:20:47,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 22:20:47,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-12 22:20:47,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2021-08-12 22:20:47,376 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.6964285714285714 [2021-08-12 22:20:47,376 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 156 transitions. [2021-08-12 22:20:47,376 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 156 transitions. [2021-08-12 22:20:47,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:20:47,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 156 transitions. [2021-08-12 22:20:47,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 19.5) internal successors, (156), 8 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:47,377 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:47,378 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:47,378 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 160 predicate places. [2021-08-12 22:20:47,378 INFO L482 AbstractCegarLoop]: Abstraction has has 187 places, 392 transitions, 20802 flow [2021-08-12 22:20:47,378 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:47,378 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:20:47,378 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:20:47,378 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-08-12 22:20:47,378 INFO L430 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:20:47,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:20:47,379 INFO L82 PathProgramCache]: Analyzing trace with hash -516926584, now seen corresponding path program 5 times [2021-08-12 22:20:47,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:20:47,379 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154825287] [2021-08-12 22:20:47,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:20:47,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:20:47,387 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:47,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:47,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:47,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-12 22:20:47,390 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:47,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:20:47,394 INFO L142 QuantifierPusher]: treesize reduction 5, result has 61.5 percent of original size [2021-08-12 22:20:47,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-08-12 22:20:47,402 INFO L142 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size [2021-08-12 22:20:47,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:20:47,410 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:47,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:20:47,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:47,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:20:47,425 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:47,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:47,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:20:47,425 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:20:47,425 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154825287] [2021-08-12 22:20:47,425 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154825287] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:20:47,425 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:20:47,426 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-12 22:20:47,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829644626] [2021-08-12 22:20:47,426 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 22:20:47,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:20:47,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 22:20:47,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-12 22:20:47,427 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 28 [2021-08-12 22:20:47,427 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 392 transitions, 20802 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:47,427 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:20:47,427 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 28 [2021-08-12 22:20:47,427 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:20:47,798 INFO L129 PetriNetUnfolder]: 422/1110 cut-off events. [2021-08-12 22:20:47,799 INFO L130 PetriNetUnfolder]: For 19447/19620 co-relation queries the response was YES. [2021-08-12 22:20:47,803 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20506 conditions, 1110 events. 422/1110 cut-off events. For 19447/19620 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 8464 event pairs, 0 based on Foata normal form. 6/810 useless extension candidates. Maximal degree in co-relation 19924. Up to 633 conditions per place. [2021-08-12 22:20:47,811 INFO L132 encePairwiseOnDemand]: 18/28 looper letters, 194 selfloop transitions, 44 changer transitions 144/392 dead transitions. [2021-08-12 22:20:47,811 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 392 transitions, 21566 flow [2021-08-12 22:20:47,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 22:20:47,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-12 22:20:47,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2021-08-12 22:20:47,812 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7053571428571429 [2021-08-12 22:20:47,812 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 158 transitions. [2021-08-12 22:20:47,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 158 transitions. [2021-08-12 22:20:47,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:20:47,813 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 158 transitions. [2021-08-12 22:20:47,813 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 19.75) internal successors, (158), 8 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:47,813 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:47,813 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:47,814 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 167 predicate places. [2021-08-12 22:20:47,814 INFO L482 AbstractCegarLoop]: Abstraction has has 194 places, 392 transitions, 21566 flow [2021-08-12 22:20:47,814 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:47,814 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:20:47,814 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:20:47,814 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-08-12 22:20:47,814 INFO L430 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:20:47,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:20:47,815 INFO L82 PathProgramCache]: Analyzing trace with hash 999050806, now seen corresponding path program 6 times [2021-08-12 22:20:47,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:20:47,815 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916621979] [2021-08-12 22:20:47,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:20:47,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:20:47,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:47,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:47,824 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:47,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-12 22:20:47,827 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:47,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:20:47,831 INFO L142 QuantifierPusher]: treesize reduction 5, result has 61.5 percent of original size [2021-08-12 22:20:47,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-08-12 22:20:47,838 INFO L142 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size [2021-08-12 22:20:47,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:20:47,848 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:47,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 22:20:47,856 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:47,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:20:47,863 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:47,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:47,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:20:47,863 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:20:47,863 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916621979] [2021-08-12 22:20:47,863 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916621979] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:20:47,863 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:20:47,863 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-12 22:20:47,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425687459] [2021-08-12 22:20:47,865 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 22:20:47,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:20:47,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 22:20:47,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-12 22:20:47,865 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 28 [2021-08-12 22:20:47,866 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 392 transitions, 21566 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:47,866 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:20:47,866 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 28 [2021-08-12 22:20:47,866 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:20:48,170 INFO L129 PetriNetUnfolder]: 422/1102 cut-off events. [2021-08-12 22:20:48,170 INFO L130 PetriNetUnfolder]: For 24023/25661 co-relation queries the response was YES. [2021-08-12 22:20:48,173 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21190 conditions, 1102 events. 422/1102 cut-off events. For 24023/25661 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 8338 event pairs, 0 based on Foata normal form. 20/816 useless extension candidates. Maximal degree in co-relation 20625. Up to 632 conditions per place. [2021-08-12 22:20:48,179 INFO L132 encePairwiseOnDemand]: 18/28 looper letters, 193 selfloop transitions, 43 changer transitions 145/391 dead transitions. [2021-08-12 22:20:48,179 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 391 transitions, 22268 flow [2021-08-12 22:20:48,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 22:20:48,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-12 22:20:48,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2021-08-12 22:20:48,180 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7008928571428571 [2021-08-12 22:20:48,180 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 157 transitions. [2021-08-12 22:20:48,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 157 transitions. [2021-08-12 22:20:48,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:20:48,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 157 transitions. [2021-08-12 22:20:48,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 19.625) internal successors, (157), 8 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:48,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:48,181 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:48,182 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 174 predicate places. [2021-08-12 22:20:48,182 INFO L482 AbstractCegarLoop]: Abstraction has has 201 places, 391 transitions, 22268 flow [2021-08-12 22:20:48,182 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:48,182 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:20:48,182 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:20:48,182 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-08-12 22:20:48,182 INFO L430 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:20:48,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:20:48,182 INFO L82 PathProgramCache]: Analyzing trace with hash -34028010, now seen corresponding path program 7 times [2021-08-12 22:20:48,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:20:48,183 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309593827] [2021-08-12 22:20:48,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:20:48,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:20:48,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:48,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:48,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:48,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-12 22:20:48,195 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:48,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:20:48,200 INFO L142 QuantifierPusher]: treesize reduction 5, result has 61.5 percent of original size [2021-08-12 22:20:48,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-08-12 22:20:48,207 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:48,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-08-12 22:20:48,211 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:48,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 22:20:48,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:48,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:20:48,224 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:48,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:48,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:20:48,225 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:20:48,225 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309593827] [2021-08-12 22:20:48,225 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309593827] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:20:48,225 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:20:48,225 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-12 22:20:48,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679509851] [2021-08-12 22:20:48,226 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 22:20:48,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:20:48,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 22:20:48,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-12 22:20:48,226 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 28 [2021-08-12 22:20:48,227 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 391 transitions, 22268 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:48,227 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:20:48,227 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 28 [2021-08-12 22:20:48,227 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:20:48,620 INFO L129 PetriNetUnfolder]: 495/1325 cut-off events. [2021-08-12 22:20:48,621 INFO L130 PetriNetUnfolder]: For 25575/25760 co-relation queries the response was YES. [2021-08-12 22:20:48,624 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25456 conditions, 1325 events. 495/1325 cut-off events. For 25575/25760 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 10617 event pairs, 0 based on Foata normal form. 6/968 useless extension candidates. Maximal degree in co-relation 24630. Up to 758 conditions per place. [2021-08-12 22:20:48,634 INFO L132 encePairwiseOnDemand]: 18/28 looper letters, 249 selfloop transitions, 80 changer transitions 146/485 dead transitions. [2021-08-12 22:20:48,635 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 485 transitions, 28142 flow [2021-08-12 22:20:48,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 22:20:48,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-12 22:20:48,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2021-08-12 22:20:48,636 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.6964285714285714 [2021-08-12 22:20:48,636 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 156 transitions. [2021-08-12 22:20:48,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 156 transitions. [2021-08-12 22:20:48,636 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:20:48,636 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 156 transitions. [2021-08-12 22:20:48,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 19.5) internal successors, (156), 8 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:48,637 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:48,637 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:48,637 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 181 predicate places. [2021-08-12 22:20:48,637 INFO L482 AbstractCegarLoop]: Abstraction has has 208 places, 485 transitions, 28142 flow [2021-08-12 22:20:48,638 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:48,638 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:20:48,638 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:20:48,638 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-08-12 22:20:48,638 INFO L430 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:20:48,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:20:48,638 INFO L82 PathProgramCache]: Analyzing trace with hash -44457224, now seen corresponding path program 8 times [2021-08-12 22:20:48,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:20:48,639 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043305426] [2021-08-12 22:20:48,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:20:48,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:20:48,648 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:48,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:48,648 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:48,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-12 22:20:48,651 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:48,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:20:48,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:48,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:20:48,664 INFO L142 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size [2021-08-12 22:20:48,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:20:48,674 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:48,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:20:48,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:48,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:20:48,688 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:48,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:48,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:20:48,689 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:20:48,689 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043305426] [2021-08-12 22:20:48,689 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043305426] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:20:48,689 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:20:48,689 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-12 22:20:48,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703383950] [2021-08-12 22:20:48,690 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 22:20:48,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:20:48,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 22:20:48,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-08-12 22:20:48,690 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 28 [2021-08-12 22:20:48,691 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 485 transitions, 28142 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:48,691 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:20:48,691 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 28 [2021-08-12 22:20:48,691 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:20:49,081 INFO L129 PetriNetUnfolder]: 509/1363 cut-off events. [2021-08-12 22:20:49,081 INFO L130 PetriNetUnfolder]: For 28454/28645 co-relation queries the response was YES. [2021-08-12 22:20:49,086 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27197 conditions, 1363 events. 509/1363 cut-off events. For 28454/28645 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 10978 event pairs, 1 based on Foata normal form. 6/992 useless extension candidates. Maximal degree in co-relation 26204. Up to 790 conditions per place. [2021-08-12 22:20:49,097 INFO L132 encePairwiseOnDemand]: 18/28 looper letters, 264 selfloop transitions, 96 changer transitions 147/517 dead transitions. [2021-08-12 22:20:49,097 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 517 transitions, 30868 flow [2021-08-12 22:20:49,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 22:20:49,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-12 22:20:49,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 159 transitions. [2021-08-12 22:20:49,098 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7098214285714286 [2021-08-12 22:20:49,099 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 159 transitions. [2021-08-12 22:20:49,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 159 transitions. [2021-08-12 22:20:49,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:20:49,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 159 transitions. [2021-08-12 22:20:49,099 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 19.875) internal successors, (159), 8 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:49,100 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:49,100 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:49,100 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 188 predicate places. [2021-08-12 22:20:49,100 INFO L482 AbstractCegarLoop]: Abstraction has has 215 places, 517 transitions, 30868 flow [2021-08-12 22:20:49,100 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:49,100 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:20:49,100 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:20:49,100 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-08-12 22:20:49,100 INFO L430 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:20:49,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:20:49,101 INFO L82 PathProgramCache]: Analyzing trace with hash 1121079530, now seen corresponding path program 9 times [2021-08-12 22:20:49,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:20:49,101 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812944577] [2021-08-12 22:20:49,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:20:49,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:20:49,108 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:49,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:49,109 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:49,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-12 22:20:49,112 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:49,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:20:49,117 INFO L142 QuantifierPusher]: treesize reduction 5, result has 61.5 percent of original size [2021-08-12 22:20:49,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-08-12 22:20:49,123 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:49,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-08-12 22:20:49,128 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:49,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 22:20:49,136 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:49,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:20:49,144 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:49,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:49,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:20:49,144 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:20:49,144 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812944577] [2021-08-12 22:20:49,144 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812944577] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:20:49,144 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:20:49,144 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-12 22:20:49,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653474989] [2021-08-12 22:20:49,145 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 22:20:49,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:20:49,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 22:20:49,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-08-12 22:20:49,145 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 28 [2021-08-12 22:20:49,145 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 517 transitions, 30868 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:49,146 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:20:49,146 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 28 [2021-08-12 22:20:49,146 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:20:49,562 INFO L129 PetriNetUnfolder]: 509/1375 cut-off events. [2021-08-12 22:20:49,562 INFO L130 PetriNetUnfolder]: For 29540/29737 co-relation queries the response was YES. [2021-08-12 22:20:49,566 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28154 conditions, 1375 events. 509/1375 cut-off events. For 29540/29737 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 11112 event pairs, 1 based on Foata normal form. 6/1003 useless extension candidates. Maximal degree in co-relation 27134. Up to 792 conditions per place. [2021-08-12 22:20:49,576 INFO L132 encePairwiseOnDemand]: 18/28 looper letters, 272 selfloop transitions, 89 changer transitions 148/519 dead transitions. [2021-08-12 22:20:49,577 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 519 transitions, 31994 flow [2021-08-12 22:20:49,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 22:20:49,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-12 22:20:49,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2021-08-12 22:20:49,579 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7008928571428571 [2021-08-12 22:20:49,580 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 157 transitions. [2021-08-12 22:20:49,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 157 transitions. [2021-08-12 22:20:49,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:20:49,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 157 transitions. [2021-08-12 22:20:49,580 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 19.625) internal successors, (157), 8 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:49,580 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:49,581 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:49,581 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 195 predicate places. [2021-08-12 22:20:49,581 INFO L482 AbstractCegarLoop]: Abstraction has has 222 places, 519 transitions, 31994 flow [2021-08-12 22:20:49,581 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:49,581 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:20:49,581 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:20:49,581 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-08-12 22:20:49,581 INFO L430 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:20:49,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:20:49,582 INFO L82 PathProgramCache]: Analyzing trace with hash 1450369440, now seen corresponding path program 10 times [2021-08-12 22:20:49,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:20:49,582 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626064678] [2021-08-12 22:20:49,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:20:49,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:20:49,590 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:49,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:49,591 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:49,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-12 22:20:49,594 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:49,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:20:49,599 INFO L142 QuantifierPusher]: treesize reduction 5, result has 61.5 percent of original size [2021-08-12 22:20:49,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-08-12 22:20:49,606 INFO L142 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size [2021-08-12 22:20:49,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:20:49,615 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:49,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 22:20:49,624 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:49,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:20:49,631 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:49,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:49,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:20:49,632 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:20:49,632 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626064678] [2021-08-12 22:20:49,632 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626064678] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:20:49,632 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:20:49,632 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-12 22:20:49,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38795666] [2021-08-12 22:20:49,632 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 22:20:49,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:20:49,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 22:20:49,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-08-12 22:20:49,633 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 28 [2021-08-12 22:20:49,633 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 519 transitions, 31994 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:49,633 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:20:49,633 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 28 [2021-08-12 22:20:49,634 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:20:50,157 INFO L129 PetriNetUnfolder]: 509/1361 cut-off events. [2021-08-12 22:20:50,157 INFO L130 PetriNetUnfolder]: For 33381/34185 co-relation queries the response was YES. [2021-08-12 22:20:50,160 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28981 conditions, 1361 events. 509/1361 cut-off events. For 33381/34185 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 10884 event pairs, 0 based on Foata normal form. 11/994 useless extension candidates. Maximal degree in co-relation 27972. Up to 791 conditions per place. [2021-08-12 22:20:50,169 INFO L132 encePairwiseOnDemand]: 18/28 looper letters, 271 selfloop transitions, 88 changer transitions 149/518 dead transitions. [2021-08-12 22:20:50,169 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 518 transitions, 32942 flow [2021-08-12 22:20:50,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 22:20:50,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-12 22:20:50,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2021-08-12 22:20:50,177 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7053571428571429 [2021-08-12 22:20:50,177 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 158 transitions. [2021-08-12 22:20:50,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 158 transitions. [2021-08-12 22:20:50,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:20:50,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 158 transitions. [2021-08-12 22:20:50,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 19.75) internal successors, (158), 8 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:50,178 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:50,178 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:50,179 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 202 predicate places. [2021-08-12 22:20:50,179 INFO L482 AbstractCegarLoop]: Abstraction has has 229 places, 518 transitions, 32942 flow [2021-08-12 22:20:50,179 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:50,179 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:20:50,179 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:20:50,179 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-08-12 22:20:50,179 INFO L430 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:20:50,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:20:50,179 INFO L82 PathProgramCache]: Analyzing trace with hash -627476814, now seen corresponding path program 11 times [2021-08-12 22:20:50,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:20:50,180 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707869128] [2021-08-12 22:20:50,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:20:50,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:20:50,187 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:50,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:50,188 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:50,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-12 22:20:50,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:50,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:20:50,196 INFO L142 QuantifierPusher]: treesize reduction 5, result has 61.5 percent of original size [2021-08-12 22:20:50,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-08-12 22:20:50,202 INFO L142 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size [2021-08-12 22:20:50,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:20:50,210 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:50,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:20:50,221 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:50,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:20:50,228 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:50,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:50,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:20:50,228 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:20:50,229 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707869128] [2021-08-12 22:20:50,229 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707869128] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:20:50,229 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:20:50,229 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-12 22:20:50,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922949395] [2021-08-12 22:20:50,229 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 22:20:50,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:20:50,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 22:20:50,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-08-12 22:20:50,230 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 28 [2021-08-12 22:20:50,230 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 518 transitions, 32942 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:50,230 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:20:50,230 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 28 [2021-08-12 22:20:50,231 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:20:50,604 INFO L129 PetriNetUnfolder]: 509/1349 cut-off events. [2021-08-12 22:20:50,604 INFO L130 PetriNetUnfolder]: For 33972/34804 co-relation queries the response was YES. [2021-08-12 22:20:50,609 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29814 conditions, 1349 events. 509/1349 cut-off events. For 33972/34804 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 10711 event pairs, 0 based on Foata normal form. 11/982 useless extension candidates. Maximal degree in co-relation 28818. Up to 790 conditions per place. [2021-08-12 22:20:50,621 INFO L132 encePairwiseOnDemand]: 18/28 looper letters, 270 selfloop transitions, 87 changer transitions 150/517 dead transitions. [2021-08-12 22:20:50,621 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 517 transitions, 33886 flow [2021-08-12 22:20:50,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 22:20:50,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-12 22:20:50,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2021-08-12 22:20:50,622 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7008928571428571 [2021-08-12 22:20:50,622 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 157 transitions. [2021-08-12 22:20:50,622 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 157 transitions. [2021-08-12 22:20:50,622 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:20:50,622 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 157 transitions. [2021-08-12 22:20:50,623 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 19.625) internal successors, (157), 8 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:50,623 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:50,624 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:50,624 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 209 predicate places. [2021-08-12 22:20:50,624 INFO L482 AbstractCegarLoop]: Abstraction has has 236 places, 517 transitions, 33886 flow [2021-08-12 22:20:50,624 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:50,624 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:20:50,624 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:20:50,624 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-08-12 22:20:50,624 INFO L430 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:20:50,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:20:50,625 INFO L82 PathProgramCache]: Analyzing trace with hash 1092366264, now seen corresponding path program 12 times [2021-08-12 22:20:50,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:20:50,625 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736031263] [2021-08-12 22:20:50,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:20:50,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:20:50,632 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:50,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:50,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:50,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-12 22:20:50,635 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:50,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:20:50,641 INFO L142 QuantifierPusher]: treesize reduction 5, result has 61.5 percent of original size [2021-08-12 22:20:50,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-08-12 22:20:50,647 INFO L142 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size [2021-08-12 22:20:50,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:20:50,655 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:50,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:20:50,662 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:50,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:20:50,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:50,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:50,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:20:50,671 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:20:50,671 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736031263] [2021-08-12 22:20:50,671 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736031263] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:20:50,671 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:20:50,671 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-12 22:20:50,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010457084] [2021-08-12 22:20:50,671 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 22:20:50,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:20:50,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 22:20:50,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-08-12 22:20:50,672 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 28 [2021-08-12 22:20:50,672 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 517 transitions, 33886 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:50,672 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:20:50,672 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 28 [2021-08-12 22:20:50,672 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:20:51,198 INFO L129 PetriNetUnfolder]: 512/1370 cut-off events. [2021-08-12 22:20:51,199 INFO L130 PetriNetUnfolder]: For 36019/36879 co-relation queries the response was YES. [2021-08-12 22:20:51,204 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31001 conditions, 1370 events. 512/1370 cut-off events. For 36019/36879 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 10962 event pairs, 0 based on Foata normal form. 11/999 useless extension candidates. Maximal degree in co-relation 29940. Up to 799 conditions per place. [2021-08-12 22:20:51,214 INFO L132 encePairwiseOnDemand]: 18/28 looper letters, 266 selfloop transitions, 99 changer transitions 151/526 dead transitions. [2021-08-12 22:20:51,215 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 526 transitions, 35470 flow [2021-08-12 22:20:51,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 22:20:51,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-12 22:20:51,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2021-08-12 22:20:51,216 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7008928571428571 [2021-08-12 22:20:51,216 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 157 transitions. [2021-08-12 22:20:51,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 157 transitions. [2021-08-12 22:20:51,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:20:51,216 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 157 transitions. [2021-08-12 22:20:51,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 19.625) internal successors, (157), 8 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:51,217 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:51,217 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:51,217 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 216 predicate places. [2021-08-12 22:20:51,217 INFO L482 AbstractCegarLoop]: Abstraction has has 243 places, 526 transitions, 35470 flow [2021-08-12 22:20:51,218 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:51,218 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:20:51,218 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:20:51,218 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-08-12 22:20:51,218 INFO L430 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:20:51,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:20:51,218 INFO L82 PathProgramCache]: Analyzing trace with hash -407296004, now seen corresponding path program 13 times [2021-08-12 22:20:51,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:20:51,219 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583015769] [2021-08-12 22:20:51,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:20:51,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:20:51,227 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:51,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:51,228 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:51,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-12 22:20:51,231 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:51,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:20:51,236 INFO L142 QuantifierPusher]: treesize reduction 5, result has 61.5 percent of original size [2021-08-12 22:20:51,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-08-12 22:20:51,243 INFO L142 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size [2021-08-12 22:20:51,244 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:20:51,253 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:51,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 22:20:51,261 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:51,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:20:51,271 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:51,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:51,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:20:51,272 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:20:51,272 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583015769] [2021-08-12 22:20:51,272 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583015769] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:20:51,272 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:20:51,272 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-12 22:20:51,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606164349] [2021-08-12 22:20:51,272 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 22:20:51,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:20:51,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 22:20:51,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-12 22:20:51,273 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 28 [2021-08-12 22:20:51,273 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 526 transitions, 35470 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:51,273 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:20:51,273 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 28 [2021-08-12 22:20:51,274 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:20:51,796 INFO L129 PetriNetUnfolder]: 512/1372 cut-off events. [2021-08-12 22:20:51,796 INFO L130 PetriNetUnfolder]: For 36804/37692 co-relation queries the response was YES. [2021-08-12 22:20:51,801 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31861 conditions, 1372 events. 512/1372 cut-off events. For 36804/37692 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 11049 event pairs, 0 based on Foata normal form. 11/1001 useless extension candidates. Maximal degree in co-relation 30815. Up to 798 conditions per place. [2021-08-12 22:20:51,814 INFO L132 encePairwiseOnDemand]: 18/28 looper letters, 265 selfloop transitions, 98 changer transitions 152/525 dead transitions. [2021-08-12 22:20:51,814 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 525 transitions, 36426 flow [2021-08-12 22:20:51,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 22:20:51,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-12 22:20:51,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2021-08-12 22:20:51,815 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.6964285714285714 [2021-08-12 22:20:51,815 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 156 transitions. [2021-08-12 22:20:51,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 156 transitions. [2021-08-12 22:20:51,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:20:51,815 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 156 transitions. [2021-08-12 22:20:51,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 19.5) internal successors, (156), 8 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:51,816 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:51,816 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:51,816 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 223 predicate places. [2021-08-12 22:20:51,816 INFO L482 AbstractCegarLoop]: Abstraction has has 250 places, 525 transitions, 36426 flow [2021-08-12 22:20:51,816 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:51,817 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:20:51,817 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:20:51,817 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-08-12 22:20:51,817 INFO L430 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:20:51,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:20:51,817 INFO L82 PathProgramCache]: Analyzing trace with hash 43356950, now seen corresponding path program 14 times [2021-08-12 22:20:51,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:20:51,817 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275326111] [2021-08-12 22:20:51,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:20:51,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:20:51,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:51,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:51,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:51,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-12 22:20:51,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:51,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:20:51,843 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:51,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:20:51,850 INFO L142 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size [2021-08-12 22:20:51,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:20:51,860 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:51,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:20:51,867 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:51,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:20:51,873 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:51,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:51,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:20:51,874 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:20:51,874 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275326111] [2021-08-12 22:20:51,874 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275326111] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:20:51,874 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:20:51,874 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-12 22:20:51,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939750232] [2021-08-12 22:20:51,874 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 22:20:51,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:20:51,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 22:20:51,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-08-12 22:20:51,876 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 28 [2021-08-12 22:20:51,876 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 525 transitions, 36426 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:51,876 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:20:51,876 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 28 [2021-08-12 22:20:51,876 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:20:52,300 INFO L129 PetriNetUnfolder]: 511/1404 cut-off events. [2021-08-12 22:20:52,300 INFO L130 PetriNetUnfolder]: For 34650/34877 co-relation queries the response was YES. [2021-08-12 22:20:52,304 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32908 conditions, 1404 events. 511/1404 cut-off events. For 34650/34877 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 11593 event pairs, 1 based on Foata normal form. 6/1027 useless extension candidates. Maximal degree in co-relation 31795. Up to 801 conditions per place. [2021-08-12 22:20:52,314 INFO L132 encePairwiseOnDemand]: 18/28 looper letters, 264 selfloop transitions, 101 changer transitions 153/528 dead transitions. [2021-08-12 22:20:52,314 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 528 transitions, 37666 flow [2021-08-12 22:20:52,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 22:20:52,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-12 22:20:52,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 159 transitions. [2021-08-12 22:20:52,315 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7098214285714286 [2021-08-12 22:20:52,315 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 159 transitions. [2021-08-12 22:20:52,315 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 159 transitions. [2021-08-12 22:20:52,315 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:20:52,315 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 159 transitions. [2021-08-12 22:20:52,316 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 19.875) internal successors, (159), 8 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:52,316 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:52,316 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:52,316 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 230 predicate places. [2021-08-12 22:20:52,316 INFO L482 AbstractCegarLoop]: Abstraction has has 257 places, 528 transitions, 37666 flow [2021-08-12 22:20:52,316 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:52,317 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:20:52,317 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:20:52,317 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-08-12 22:20:52,317 INFO L430 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:20:52,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:20:52,317 INFO L82 PathProgramCache]: Analyzing trace with hash 1375528284, now seen corresponding path program 15 times [2021-08-12 22:20:52,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:20:52,317 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694232784] [2021-08-12 22:20:52,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:20:52,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:20:52,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:52,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:52,325 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:52,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-12 22:20:52,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:52,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:20:52,332 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:52,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:20:52,339 INFO L142 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size [2021-08-12 22:20:52,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:20:52,347 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:52,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 22:20:52,357 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:52,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:20:52,362 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:52,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:52,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:20:52,363 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:20:52,363 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694232784] [2021-08-12 22:20:52,363 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694232784] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:20:52,363 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:20:52,363 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-12 22:20:52,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538612218] [2021-08-12 22:20:52,364 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 22:20:52,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:20:52,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 22:20:52,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-12 22:20:52,364 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 28 [2021-08-12 22:20:52,365 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 528 transitions, 37666 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:52,365 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:20:52,365 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 28 [2021-08-12 22:20:52,365 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:20:52,756 INFO L129 PetriNetUnfolder]: 511/1397 cut-off events. [2021-08-12 22:20:52,756 INFO L130 PetriNetUnfolder]: For 35046/35279 co-relation queries the response was YES. [2021-08-12 22:20:52,760 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33754 conditions, 1397 events. 511/1397 cut-off events. For 35046/35279 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 11488 event pairs, 0 based on Foata normal form. 6/1020 useless extension candidates. Maximal degree in co-relation 32658. Up to 800 conditions per place. [2021-08-12 22:20:52,858 INFO L132 encePairwiseOnDemand]: 18/28 looper letters, 264 selfloop transitions, 99 changer transitions 154/527 dead transitions. [2021-08-12 22:20:52,858 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 527 transitions, 38622 flow [2021-08-12 22:20:52,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 22:20:52,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-12 22:20:52,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 159 transitions. [2021-08-12 22:20:52,859 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7098214285714286 [2021-08-12 22:20:52,859 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 159 transitions. [2021-08-12 22:20:52,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 159 transitions. [2021-08-12 22:20:52,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:20:52,859 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 159 transitions. [2021-08-12 22:20:52,860 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 19.875) internal successors, (159), 8 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:52,860 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:52,860 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:52,861 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 237 predicate places. [2021-08-12 22:20:52,861 INFO L482 AbstractCegarLoop]: Abstraction has has 264 places, 527 transitions, 38622 flow [2021-08-12 22:20:52,861 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:52,861 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:20:52,861 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:20:52,861 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-08-12 22:20:52,861 INFO L430 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:20:52,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:20:52,862 INFO L82 PathProgramCache]: Analyzing trace with hash -94501946, now seen corresponding path program 16 times [2021-08-12 22:20:52,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:20:52,862 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782508731] [2021-08-12 22:20:52,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:20:52,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:20:52,876 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:52,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:52,877 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:52,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-12 22:20:52,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:52,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:20:52,889 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:52,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:20:52,897 INFO L142 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size [2021-08-12 22:20:52,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:20:52,907 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:52,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:20:52,915 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:52,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:20:52,921 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:52,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:52,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:20:52,922 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:20:52,922 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782508731] [2021-08-12 22:20:52,922 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782508731] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:20:52,922 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:20:52,922 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-12 22:20:52,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69622277] [2021-08-12 22:20:52,922 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 22:20:52,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:20:52,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 22:20:52,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-08-12 22:20:52,923 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 28 [2021-08-12 22:20:52,923 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 527 transitions, 38622 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:52,923 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:20:52,923 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 28 [2021-08-12 22:20:52,923 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:20:53,321 INFO L129 PetriNetUnfolder]: 511/1387 cut-off events. [2021-08-12 22:20:53,321 INFO L130 PetriNetUnfolder]: For 40180/41152 co-relation queries the response was YES. [2021-08-12 22:20:53,326 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34590 conditions, 1387 events. 511/1387 cut-off events. For 40180/41152 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 11357 event pairs, 0 based on Foata normal form. 11/1015 useless extension candidates. Maximal degree in co-relation 33513. Up to 799 conditions per place. [2021-08-12 22:20:53,338 INFO L132 encePairwiseOnDemand]: 18/28 looper letters, 262 selfloop transitions, 99 changer transitions 155/526 dead transitions. [2021-08-12 22:20:53,338 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 526 transitions, 39574 flow [2021-08-12 22:20:53,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 22:20:53,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-12 22:20:53,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 159 transitions. [2021-08-12 22:20:53,339 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7098214285714286 [2021-08-12 22:20:53,339 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 159 transitions. [2021-08-12 22:20:53,339 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 159 transitions. [2021-08-12 22:20:53,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:20:53,339 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 159 transitions. [2021-08-12 22:20:53,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 19.875) internal successors, (159), 8 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:53,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:53,341 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:53,341 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 244 predicate places. [2021-08-12 22:20:53,341 INFO L482 AbstractCegarLoop]: Abstraction has has 271 places, 526 transitions, 39574 flow [2021-08-12 22:20:53,341 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:53,341 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:20:53,341 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:20:53,341 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-08-12 22:20:53,342 INFO L430 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:20:53,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:20:53,342 INFO L82 PathProgramCache]: Analyzing trace with hash -1636106692, now seen corresponding path program 17 times [2021-08-12 22:20:53,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:20:53,342 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281511099] [2021-08-12 22:20:53,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:20:53,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:20:53,367 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:53,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:53,368 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:53,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-12 22:20:53,371 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:53,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:20:53,376 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:53,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:20:53,384 INFO L142 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size [2021-08-12 22:20:53,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:20:53,393 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:53,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 22:20:53,403 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:53,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:20:53,410 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:53,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:53,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:20:53,411 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:20:53,411 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281511099] [2021-08-12 22:20:53,411 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281511099] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:20:53,411 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:20:53,412 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-12 22:20:53,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313548299] [2021-08-12 22:20:53,412 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 22:20:53,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:20:53,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 22:20:53,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-12 22:20:53,413 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 28 [2021-08-12 22:20:53,413 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 526 transitions, 39574 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:53,413 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:20:53,413 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 28 [2021-08-12 22:20:53,413 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:20:53,898 INFO L129 PetriNetUnfolder]: 511/1385 cut-off events. [2021-08-12 22:20:53,898 INFO L130 PetriNetUnfolder]: For 40867/41867 co-relation queries the response was YES. [2021-08-12 22:20:53,901 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35440 conditions, 1385 events. 511/1385 cut-off events. For 40867/41867 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 11327 event pairs, 0 based on Foata normal form. 11/1013 useless extension candidates. Maximal degree in co-relation 34384. Up to 798 conditions per place. [2021-08-12 22:20:53,911 INFO L132 encePairwiseOnDemand]: 18/28 looper letters, 262 selfloop transitions, 97 changer transitions 156/525 dead transitions. [2021-08-12 22:20:53,911 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 525 transitions, 40522 flow [2021-08-12 22:20:53,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 22:20:53,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-12 22:20:53,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2021-08-12 22:20:53,913 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7053571428571429 [2021-08-12 22:20:53,913 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 158 transitions. [2021-08-12 22:20:53,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 158 transitions. [2021-08-12 22:20:53,914 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:20:53,914 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 158 transitions. [2021-08-12 22:20:53,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 19.75) internal successors, (158), 8 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:53,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:53,915 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:53,915 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 251 predicate places. [2021-08-12 22:20:53,915 INFO L482 AbstractCegarLoop]: Abstraction has has 278 places, 525 transitions, 40522 flow [2021-08-12 22:20:53,915 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:53,915 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:20:53,915 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:20:53,915 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-08-12 22:20:53,915 INFO L430 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:20:53,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:20:53,915 INFO L82 PathProgramCache]: Analyzing trace with hash -150391744, now seen corresponding path program 18 times [2021-08-12 22:20:53,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:20:53,916 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486543324] [2021-08-12 22:20:53,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:20:53,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:20:53,929 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:53,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:53,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:53,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-12 22:20:53,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:53,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:20:53,937 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:53,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:20:53,944 INFO L142 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size [2021-08-12 22:20:53,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:20:53,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:53,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:20:53,958 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:53,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:20:53,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:53,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:53,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:20:53,966 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:20:53,966 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486543324] [2021-08-12 22:20:53,966 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486543324] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:20:53,966 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:20:53,966 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-12 22:20:53,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524253952] [2021-08-12 22:20:53,967 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 22:20:53,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:20:53,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 22:20:53,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-12 22:20:53,967 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 28 [2021-08-12 22:20:53,967 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 525 transitions, 40522 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:53,968 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:20:53,968 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 28 [2021-08-12 22:20:53,968 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:20:54,470 INFO L129 PetriNetUnfolder]: 511/1384 cut-off events. [2021-08-12 22:20:54,470 INFO L130 PetriNetUnfolder]: For 41536/42564 co-relation queries the response was YES. [2021-08-12 22:20:54,473 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36289 conditions, 1384 events. 511/1384 cut-off events. For 41536/42564 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 11322 event pairs, 0 based on Foata normal form. 11/1012 useless extension candidates. Maximal degree in co-relation 35256. Up to 797 conditions per place. [2021-08-12 22:20:54,484 INFO L132 encePairwiseOnDemand]: 18/28 looper letters, 261 selfloop transitions, 96 changer transitions 157/524 dead transitions. [2021-08-12 22:20:54,484 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 524 transitions, 41466 flow [2021-08-12 22:20:54,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 22:20:54,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-12 22:20:54,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2021-08-12 22:20:54,485 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7008928571428571 [2021-08-12 22:20:54,485 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 157 transitions. [2021-08-12 22:20:54,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 157 transitions. [2021-08-12 22:20:54,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:20:54,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 157 transitions. [2021-08-12 22:20:54,486 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 19.625) internal successors, (157), 8 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:54,486 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:54,486 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:54,486 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 258 predicate places. [2021-08-12 22:20:54,486 INFO L482 AbstractCegarLoop]: Abstraction has has 285 places, 524 transitions, 41466 flow [2021-08-12 22:20:54,487 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:54,487 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:20:54,487 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:20:54,487 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-08-12 22:20:54,487 INFO L430 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:20:54,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:20:54,487 INFO L82 PathProgramCache]: Analyzing trace with hash -1394384516, now seen corresponding path program 19 times [2021-08-12 22:20:54,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:20:54,487 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252930628] [2021-08-12 22:20:54,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:20:54,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:20:54,495 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:54,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:54,495 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:54,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-12 22:20:54,498 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:54,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:20:54,503 INFO L142 QuantifierPusher]: treesize reduction 5, result has 61.5 percent of original size [2021-08-12 22:20:54,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-08-12 22:20:54,509 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:54,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:20:54,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:54,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:20:54,531 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:54,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:20:54,537 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:54,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:54,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:20:54,537 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:20:54,538 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252930628] [2021-08-12 22:20:54,538 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252930628] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:20:54,538 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:20:54,538 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-12 22:20:54,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574413927] [2021-08-12 22:20:54,538 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 22:20:54,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:20:54,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 22:20:54,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-08-12 22:20:54,539 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 28 [2021-08-12 22:20:54,539 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 524 transitions, 41466 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:54,539 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:20:54,539 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 28 [2021-08-12 22:20:54,539 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:20:55,065 INFO L129 PetriNetUnfolder]: 555/1571 cut-off events. [2021-08-12 22:20:55,065 INFO L130 PetriNetUnfolder]: For 54761/55817 co-relation queries the response was YES. [2021-08-12 22:20:55,069 INFO L84 FinitePrefix]: Finished finitePrefix Result has 41258 conditions, 1571 events. 555/1571 cut-off events. For 54761/55817 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 13434 event pairs, 0 based on Foata normal form. 11/1156 useless extension candidates. Maximal degree in co-relation 39639. Up to 898 conditions per place. [2021-08-12 22:20:55,081 INFO L132 encePairwiseOnDemand]: 18/28 looper letters, 339 selfloop transitions, 104 changer transitions 158/611 dead transitions. [2021-08-12 22:20:55,081 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 611 transitions, 49334 flow [2021-08-12 22:20:55,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 22:20:55,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-12 22:20:55,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2021-08-12 22:20:55,082 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7008928571428571 [2021-08-12 22:20:55,082 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 157 transitions. [2021-08-12 22:20:55,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 157 transitions. [2021-08-12 22:20:55,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:20:55,082 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 157 transitions. [2021-08-12 22:20:55,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 19.625) internal successors, (157), 8 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:55,083 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:55,083 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:55,083 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 265 predicate places. [2021-08-12 22:20:55,083 INFO L482 AbstractCegarLoop]: Abstraction has has 292 places, 611 transitions, 49334 flow [2021-08-12 22:20:55,083 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:55,083 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:20:55,083 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:20:55,083 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-08-12 22:20:55,083 INFO L430 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:20:55,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:20:55,084 INFO L82 PathProgramCache]: Analyzing trace with hash 1271022476, now seen corresponding path program 20 times [2021-08-12 22:20:55,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:20:55,084 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338544360] [2021-08-12 22:20:55,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:20:55,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:20:55,094 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:55,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:55,095 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:55,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-12 22:20:55,098 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:55,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:20:55,103 INFO L142 QuantifierPusher]: treesize reduction 5, result has 61.5 percent of original size [2021-08-12 22:20:55,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-08-12 22:20:55,108 INFO L142 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size [2021-08-12 22:20:55,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:20:55,115 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:55,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:20:55,122 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:55,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:20:55,128 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:55,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:55,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:20:55,128 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:20:55,128 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338544360] [2021-08-12 22:20:55,128 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338544360] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:20:55,128 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:20:55,128 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-12 22:20:55,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741125445] [2021-08-12 22:20:55,129 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 22:20:55,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:20:55,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 22:20:55,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-08-12 22:20:55,129 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 28 [2021-08-12 22:20:55,129 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 611 transitions, 49334 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:55,129 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:20:55,130 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 28 [2021-08-12 22:20:55,130 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:20:55,603 INFO L129 PetriNetUnfolder]: 554/1581 cut-off events. [2021-08-12 22:20:55,603 INFO L130 PetriNetUnfolder]: For 50788/51051 co-relation queries the response was YES. [2021-08-12 22:20:55,607 INFO L84 FinitePrefix]: Finished finitePrefix Result has 42269 conditions, 1581 events. 554/1581 cut-off events. For 50788/51051 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 13634 event pairs, 0 based on Foata normal form. 6/1161 useless extension candidates. Maximal degree in co-relation 40616. Up to 898 conditions per place. [2021-08-12 22:20:55,619 INFO L132 encePairwiseOnDemand]: 18/28 looper letters, 339 selfloop transitions, 103 changer transitions 159/611 dead transitions. [2021-08-12 22:20:55,619 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 611 transitions, 50536 flow [2021-08-12 22:20:55,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 22:20:55,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-12 22:20:55,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 159 transitions. [2021-08-12 22:20:55,620 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7098214285714286 [2021-08-12 22:20:55,620 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 159 transitions. [2021-08-12 22:20:55,620 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 159 transitions. [2021-08-12 22:20:55,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:20:55,620 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 159 transitions. [2021-08-12 22:20:55,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 19.875) internal successors, (159), 8 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:55,620 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:55,621 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:55,621 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 272 predicate places. [2021-08-12 22:20:55,621 INFO L482 AbstractCegarLoop]: Abstraction has has 299 places, 611 transitions, 50536 flow [2021-08-12 22:20:55,621 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:55,621 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:20:55,621 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:20:55,621 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-08-12 22:20:55,621 INFO L430 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:20:55,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:20:55,621 INFO L82 PathProgramCache]: Analyzing trace with hash -1043955132, now seen corresponding path program 21 times [2021-08-12 22:20:55,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:20:55,621 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930571134] [2021-08-12 22:20:55,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:20:55,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:20:55,640 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:55,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:55,644 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:55,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-12 22:20:55,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:55,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:20:55,652 INFO L142 QuantifierPusher]: treesize reduction 5, result has 61.5 percent of original size [2021-08-12 22:20:55,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-08-12 22:20:55,658 INFO L142 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size [2021-08-12 22:20:55,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:20:55,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:55,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 22:20:55,675 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:55,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:20:55,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:55,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:55,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:20:55,682 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:20:55,683 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930571134] [2021-08-12 22:20:55,683 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930571134] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:20:55,683 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:20:55,683 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-12 22:20:55,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091973147] [2021-08-12 22:20:55,683 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 22:20:55,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:20:55,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 22:20:55,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-08-12 22:20:55,684 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 28 [2021-08-12 22:20:55,684 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 611 transitions, 50536 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:55,684 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:20:55,684 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 28 [2021-08-12 22:20:55,684 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:20:56,336 INFO L129 PetriNetUnfolder]: 554/1581 cut-off events. [2021-08-12 22:20:56,337 INFO L130 PetriNetUnfolder]: For 51553/51822 co-relation queries the response was YES. [2021-08-12 22:20:56,342 INFO L84 FinitePrefix]: Finished finitePrefix Result has 43218 conditions, 1581 events. 554/1581 cut-off events. For 51553/51822 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 13678 event pairs, 0 based on Foata normal form. 6/1161 useless extension candidates. Maximal degree in co-relation 41580. Up to 897 conditions per place. [2021-08-12 22:20:56,358 INFO L132 encePairwiseOnDemand]: 18/28 looper letters, 337 selfloop transitions, 103 changer transitions 160/610 dead transitions. [2021-08-12 22:20:56,358 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 610 transitions, 51646 flow [2021-08-12 22:20:56,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 22:20:56,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-12 22:20:56,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2021-08-12 22:20:56,359 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7053571428571429 [2021-08-12 22:20:56,359 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 158 transitions. [2021-08-12 22:20:56,359 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 158 transitions. [2021-08-12 22:20:56,359 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:20:56,359 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 158 transitions. [2021-08-12 22:20:56,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 19.75) internal successors, (158), 8 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:56,360 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:56,360 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:56,360 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 279 predicate places. [2021-08-12 22:20:56,360 INFO L482 AbstractCegarLoop]: Abstraction has has 306 places, 610 transitions, 51646 flow [2021-08-12 22:20:56,360 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:56,360 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:20:56,361 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:20:56,361 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-08-12 22:20:56,361 INFO L430 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:20:56,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:20:56,361 INFO L82 PathProgramCache]: Analyzing trace with hash -1006328398, now seen corresponding path program 22 times [2021-08-12 22:20:56,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:20:56,361 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414228349] [2021-08-12 22:20:56,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:20:56,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:20:56,372 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:56,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:56,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:56,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-12 22:20:56,376 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:56,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:20:56,381 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:56,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:20:56,389 INFO L142 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size [2021-08-12 22:20:56,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:20:56,400 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:56,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:20:56,409 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:56,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:20:56,414 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:56,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:56,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:20:56,415 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:20:56,415 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414228349] [2021-08-12 22:20:56,415 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414228349] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:20:56,415 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:20:56,415 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-12 22:20:56,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695819047] [2021-08-12 22:20:56,416 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 22:20:56,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:20:56,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 22:20:56,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-08-12 22:20:56,416 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 28 [2021-08-12 22:20:56,417 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 610 transitions, 51646 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:56,417 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:20:56,417 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 28 [2021-08-12 22:20:56,417 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:20:57,061 INFO L129 PetriNetUnfolder]: 553/1592 cut-off events. [2021-08-12 22:20:57,061 INFO L130 PetriNetUnfolder]: For 54341/54616 co-relation queries the response was YES. [2021-08-12 22:20:57,067 INFO L84 FinitePrefix]: Finished finitePrefix Result has 44350 conditions, 1592 events. 553/1592 cut-off events. For 54341/54616 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 13838 event pairs, 0 based on Foata normal form. 6/1171 useless extension candidates. Maximal degree in co-relation 42629. Up to 900 conditions per place. [2021-08-12 22:20:57,081 INFO L132 encePairwiseOnDemand]: 18/28 looper letters, 325 selfloop transitions, 117 changer transitions 161/613 dead transitions. [2021-08-12 22:20:57,081 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 613 transitions, 53104 flow [2021-08-12 22:20:57,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 22:20:57,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-12 22:20:57,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 159 transitions. [2021-08-12 22:20:57,082 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7098214285714286 [2021-08-12 22:20:57,082 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 159 transitions. [2021-08-12 22:20:57,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 159 transitions. [2021-08-12 22:20:57,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:20:57,082 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 159 transitions. [2021-08-12 22:20:57,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 19.875) internal successors, (159), 8 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:57,082 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:57,082 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:57,083 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 286 predicate places. [2021-08-12 22:20:57,083 INFO L482 AbstractCegarLoop]: Abstraction has has 313 places, 613 transitions, 53104 flow [2021-08-12 22:20:57,083 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:57,083 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:20:57,083 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:20:57,083 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-08-12 22:20:57,083 INFO L430 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:20:57,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:20:57,083 INFO L82 PathProgramCache]: Analyzing trace with hash -1121303812, now seen corresponding path program 23 times [2021-08-12 22:20:57,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:20:57,083 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806435639] [2021-08-12 22:20:57,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:20:57,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:20:57,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:57,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:57,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:57,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-12 22:20:57,094 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:57,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:20:57,099 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:57,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:20:57,106 INFO L142 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size [2021-08-12 22:20:57,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:20:57,114 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:57,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 22:20:57,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:57,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:20:57,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:57,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:57,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:20:57,127 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:20:57,127 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806435639] [2021-08-12 22:20:57,128 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806435639] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:20:57,128 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:20:57,128 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-12 22:20:57,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805042362] [2021-08-12 22:20:57,128 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 22:20:57,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:20:57,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 22:20:57,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-08-12 22:20:57,129 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 28 [2021-08-12 22:20:57,129 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 613 transitions, 53104 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:57,129 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:20:57,129 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 28 [2021-08-12 22:20:57,129 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:20:57,650 INFO L129 PetriNetUnfolder]: 553/1599 cut-off events. [2021-08-12 22:20:57,651 INFO L130 PetriNetUnfolder]: For 55288/55569 co-relation queries the response was YES. [2021-08-12 22:20:57,655 INFO L84 FinitePrefix]: Finished finitePrefix Result has 45308 conditions, 1599 events. 553/1599 cut-off events. For 55288/55569 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 13976 event pairs, 1 based on Foata normal form. 6/1178 useless extension candidates. Maximal degree in co-relation 43604. Up to 899 conditions per place. [2021-08-12 22:20:57,667 INFO L132 encePairwiseOnDemand]: 18/28 looper letters, 324 selfloop transitions, 116 changer transitions 162/612 dead transitions. [2021-08-12 22:20:57,667 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 612 transitions, 54214 flow [2021-08-12 22:20:57,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 22:20:57,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-12 22:20:57,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 159 transitions. [2021-08-12 22:20:57,668 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7098214285714286 [2021-08-12 22:20:57,668 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 159 transitions. [2021-08-12 22:20:57,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 159 transitions. [2021-08-12 22:20:57,668 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:20:57,668 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 159 transitions. [2021-08-12 22:20:57,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 19.875) internal successors, (159), 8 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:57,669 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:57,669 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:57,669 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 293 predicate places. [2021-08-12 22:20:57,669 INFO L482 AbstractCegarLoop]: Abstraction has has 320 places, 612 transitions, 54214 flow [2021-08-12 22:20:57,669 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:57,669 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:20:57,669 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:20:57,669 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-08-12 22:20:57,670 INFO L430 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:20:57,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:20:57,670 INFO L82 PathProgramCache]: Analyzing trace with hash -359101996, now seen corresponding path program 24 times [2021-08-12 22:20:57,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:20:57,670 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115592720] [2021-08-12 22:20:57,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:20:57,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:20:57,677 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:57,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:57,677 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:57,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-12 22:20:57,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:57,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:20:57,685 INFO L142 QuantifierPusher]: treesize reduction 3, result has 72.7 percent of original size [2021-08-12 22:20:57,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-08-12 22:20:57,692 INFO L142 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size [2021-08-12 22:20:57,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:20:57,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:57,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:20:57,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:57,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:20:57,713 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:57,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:57,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:20:57,713 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:20:57,713 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115592720] [2021-08-12 22:20:57,713 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115592720] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:20:57,713 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:20:57,714 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-12 22:20:57,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436322391] [2021-08-12 22:20:57,714 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 22:20:57,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:20:57,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 22:20:57,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-12 22:20:57,714 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 28 [2021-08-12 22:20:57,715 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 612 transitions, 54214 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:57,715 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:20:57,715 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 28 [2021-08-12 22:20:57,715 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:20:58,382 INFO L129 PetriNetUnfolder]: 553/1610 cut-off events. [2021-08-12 22:20:58,382 INFO L130 PetriNetUnfolder]: For 56042/56329 co-relation queries the response was YES. [2021-08-12 22:20:58,388 INFO L84 FinitePrefix]: Finished finitePrefix Result has 46275 conditions, 1610 events. 553/1610 cut-off events. For 56042/56329 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 14130 event pairs, 0 based on Foata normal form. 6/1189 useless extension candidates. Maximal degree in co-relation 44590. Up to 898 conditions per place. [2021-08-12 22:20:58,406 INFO L132 encePairwiseOnDemand]: 18/28 looper letters, 328 selfloop transitions, 114 changer transitions 163/615 dead transitions. [2021-08-12 22:20:58,406 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 615 transitions, 55664 flow [2021-08-12 22:20:58,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 22:20:58,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-12 22:20:58,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2021-08-12 22:20:58,407 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7053571428571429 [2021-08-12 22:20:58,407 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 158 transitions. [2021-08-12 22:20:58,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 158 transitions. [2021-08-12 22:20:58,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:20:58,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 158 transitions. [2021-08-12 22:20:58,407 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 19.75) internal successors, (158), 8 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:58,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:58,408 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:58,408 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 300 predicate places. [2021-08-12 22:20:58,408 INFO L482 AbstractCegarLoop]: Abstraction has has 327 places, 615 transitions, 55664 flow [2021-08-12 22:20:58,408 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:58,408 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:20:58,408 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:20:58,409 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-08-12 22:20:58,409 INFO L430 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:20:58,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:20:58,409 INFO L82 PathProgramCache]: Analyzing trace with hash -858381674, now seen corresponding path program 25 times [2021-08-12 22:20:58,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:20:58,409 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624216609] [2021-08-12 22:20:58,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:20:58,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:20:58,429 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:58,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:58,430 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:58,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-12 22:20:58,432 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:58,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:20:58,438 INFO L142 QuantifierPusher]: treesize reduction 3, result has 72.7 percent of original size [2021-08-12 22:20:58,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-08-12 22:20:58,446 INFO L142 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size [2021-08-12 22:20:58,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:20:58,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:58,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:20:58,462 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:58,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:20:58,468 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:58,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:58,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:20:58,469 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:20:58,469 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624216609] [2021-08-12 22:20:58,469 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624216609] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:20:58,469 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:20:58,469 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-12 22:20:58,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161294010] [2021-08-12 22:20:58,469 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 22:20:58,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:20:58,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 22:20:58,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-08-12 22:20:58,470 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 28 [2021-08-12 22:20:58,470 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 615 transitions, 55664 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:58,470 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:20:58,470 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 28 [2021-08-12 22:20:58,470 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:20:59,099 INFO L129 PetriNetUnfolder]: 553/1600 cut-off events. [2021-08-12 22:20:59,099 INFO L130 PetriNetUnfolder]: For 56639/56932 co-relation queries the response was YES. [2021-08-12 22:20:59,103 INFO L84 FinitePrefix]: Finished finitePrefix Result has 47202 conditions, 1600 events. 553/1600 cut-off events. For 56639/56932 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 13998 event pairs, 0 based on Foata normal form. 6/1179 useless extension candidates. Maximal degree in co-relation 45538. Up to 897 conditions per place. [2021-08-12 22:20:59,120 INFO L132 encePairwiseOnDemand]: 18/28 looper letters, 326 selfloop transitions, 114 changer transitions 164/614 dead transitions. [2021-08-12 22:20:59,120 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 614 transitions, 56774 flow [2021-08-12 22:20:59,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 22:20:59,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-12 22:20:59,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2021-08-12 22:20:59,121 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7008928571428571 [2021-08-12 22:20:59,121 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 157 transitions. [2021-08-12 22:20:59,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 157 transitions. [2021-08-12 22:20:59,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:20:59,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 157 transitions. [2021-08-12 22:20:59,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 19.625) internal successors, (157), 8 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:59,121 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:59,122 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:59,122 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 307 predicate places. [2021-08-12 22:20:59,122 INFO L482 AbstractCegarLoop]: Abstraction has has 334 places, 614 transitions, 56774 flow [2021-08-12 22:20:59,122 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:59,122 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:20:59,122 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:20:59,122 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-08-12 22:20:59,122 INFO L430 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:20:59,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:20:59,122 INFO L82 PathProgramCache]: Analyzing trace with hash 1128986220, now seen corresponding path program 26 times [2021-08-12 22:20:59,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:20:59,122 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315797879] [2021-08-12 22:20:59,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:20:59,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:20:59,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:59,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:59,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:59,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-12 22:20:59,132 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:59,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:20:59,137 INFO L142 QuantifierPusher]: treesize reduction 3, result has 72.7 percent of original size [2021-08-12 22:20:59,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-08-12 22:20:59,143 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:59,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:20:59,147 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:59,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:20:59,154 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:59,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:20:59,160 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:59,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:59,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:20:59,160 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:20:59,161 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315797879] [2021-08-12 22:20:59,161 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315797879] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:20:59,161 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:20:59,161 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-12 22:20:59,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831154429] [2021-08-12 22:20:59,161 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 22:20:59,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:20:59,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 22:20:59,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-12 22:20:59,162 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 28 [2021-08-12 22:20:59,162 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 614 transitions, 56774 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:59,162 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:20:59,162 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 28 [2021-08-12 22:20:59,162 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:20:59,664 INFO L129 PetriNetUnfolder]: 553/1581 cut-off events. [2021-08-12 22:20:59,665 INFO L130 PetriNetUnfolder]: For 57044/57343 co-relation queries the response was YES. [2021-08-12 22:20:59,669 INFO L84 FinitePrefix]: Finished finitePrefix Result has 48111 conditions, 1581 events. 553/1581 cut-off events. For 57044/57343 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 13710 event pairs, 1 based on Foata normal form. 6/1160 useless extension candidates. Maximal degree in co-relation 46470. Up to 896 conditions per place. [2021-08-12 22:20:59,682 INFO L132 encePairwiseOnDemand]: 18/28 looper letters, 327 selfloop transitions, 111 changer transitions 165/613 dead transitions. [2021-08-12 22:20:59,682 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 613 transitions, 57880 flow [2021-08-12 22:20:59,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 22:20:59,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-12 22:20:59,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2021-08-12 22:20:59,683 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.6964285714285714 [2021-08-12 22:20:59,683 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 156 transitions. [2021-08-12 22:20:59,683 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 156 transitions. [2021-08-12 22:20:59,683 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:20:59,683 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 156 transitions. [2021-08-12 22:20:59,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 19.5) internal successors, (156), 8 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:59,683 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:59,684 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:59,684 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 314 predicate places. [2021-08-12 22:20:59,684 INFO L482 AbstractCegarLoop]: Abstraction has has 341 places, 613 transitions, 57880 flow [2021-08-12 22:20:59,684 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:59,684 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:20:59,684 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:20:59,684 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-08-12 22:20:59,684 INFO L430 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:20:59,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:20:59,685 INFO L82 PathProgramCache]: Analyzing trace with hash -1044407806, now seen corresponding path program 27 times [2021-08-12 22:20:59,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:20:59,685 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857238230] [2021-08-12 22:20:59,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:20:59,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:20:59,696 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:59,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:59,696 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:59,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-12 22:20:59,699 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:59,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:20:59,704 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:59,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:20:59,711 INFO L142 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size [2021-08-12 22:20:59,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:20:59,719 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:59,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:20:59,726 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:59,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:20:59,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:20:59,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:20:59,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:20:59,732 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:20:59,732 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857238230] [2021-08-12 22:20:59,732 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857238230] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:20:59,732 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:20:59,732 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-12 22:20:59,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402579199] [2021-08-12 22:20:59,732 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 22:20:59,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:20:59,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 22:20:59,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-12 22:20:59,733 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 28 [2021-08-12 22:20:59,733 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 613 transitions, 57880 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:20:59,733 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:20:59,733 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 28 [2021-08-12 22:20:59,733 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:21:00,267 INFO L129 PetriNetUnfolder]: 553/1578 cut-off events. [2021-08-12 22:21:00,268 INFO L130 PetriNetUnfolder]: For 57061/57366 co-relation queries the response was YES. [2021-08-12 22:21:00,273 INFO L84 FinitePrefix]: Finished finitePrefix Result has 49044 conditions, 1578 events. 553/1578 cut-off events. For 57061/57366 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 13652 event pairs, 0 based on Foata normal form. 6/1157 useless extension candidates. Maximal degree in co-relation 47428. Up to 895 conditions per place. [2021-08-12 22:21:00,291 INFO L132 encePairwiseOnDemand]: 18/28 looper letters, 322 selfloop transitions, 114 changer transitions 166/612 dead transitions. [2021-08-12 22:21:00,292 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 612 transitions, 58982 flow [2021-08-12 22:21:00,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 22:21:00,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-12 22:21:00,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 159 transitions. [2021-08-12 22:21:00,293 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7098214285714286 [2021-08-12 22:21:00,293 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 159 transitions. [2021-08-12 22:21:00,293 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 159 transitions. [2021-08-12 22:21:00,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:21:00,294 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 159 transitions. [2021-08-12 22:21:00,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 19.875) internal successors, (159), 8 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:00,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:00,294 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:00,295 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 321 predicate places. [2021-08-12 22:21:00,295 INFO L482 AbstractCegarLoop]: Abstraction has has 348 places, 612 transitions, 58982 flow [2021-08-12 22:21:00,295 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:00,295 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:21:00,295 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:21:00,295 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-08-12 22:21:00,295 INFO L430 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:21:00,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:21:00,296 INFO L82 PathProgramCache]: Analyzing trace with hash -1803555042, now seen corresponding path program 28 times [2021-08-12 22:21:00,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:21:00,296 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302790733] [2021-08-12 22:21:00,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:21:00,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:21:00,306 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:00,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:21:00,307 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:00,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-12 22:21:00,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:00,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:21:00,315 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:00,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:21:00,323 INFO L142 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size [2021-08-12 22:21:00,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:21:00,333 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:00,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:21:00,342 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:00,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:21:00,348 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:00,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:21:00,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:21:00,349 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:21:00,349 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302790733] [2021-08-12 22:21:00,349 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302790733] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:21:00,349 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:21:00,349 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-12 22:21:00,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636993978] [2021-08-12 22:21:00,349 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 22:21:00,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:21:00,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 22:21:00,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-08-12 22:21:00,350 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 28 [2021-08-12 22:21:00,350 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 612 transitions, 58982 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:00,350 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:21:00,350 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 28 [2021-08-12 22:21:00,351 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:21:01,007 INFO L129 PetriNetUnfolder]: 553/1573 cut-off events. [2021-08-12 22:21:01,007 INFO L130 PetriNetUnfolder]: For 67356/68664 co-relation queries the response was YES. [2021-08-12 22:21:01,012 INFO L84 FinitePrefix]: Finished finitePrefix Result has 49975 conditions, 1573 events. 553/1573 cut-off events. For 67356/68664 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 13580 event pairs, 0 based on Foata normal form. 11/1157 useless extension candidates. Maximal degree in co-relation 48386. Up to 894 conditions per place. [2021-08-12 22:21:01,030 INFO L132 encePairwiseOnDemand]: 18/28 looper letters, 320 selfloop transitions, 114 changer transitions 167/611 dead transitions. [2021-08-12 22:21:01,030 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 611 transitions, 60080 flow [2021-08-12 22:21:01,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 22:21:01,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-12 22:21:01,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 159 transitions. [2021-08-12 22:21:01,038 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7098214285714286 [2021-08-12 22:21:01,038 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 159 transitions. [2021-08-12 22:21:01,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 159 transitions. [2021-08-12 22:21:01,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:21:01,039 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 159 transitions. [2021-08-12 22:21:01,039 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 19.875) internal successors, (159), 8 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:01,040 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:01,040 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:01,040 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 328 predicate places. [2021-08-12 22:21:01,040 INFO L482 AbstractCegarLoop]: Abstraction has has 355 places, 611 transitions, 60080 flow [2021-08-12 22:21:01,040 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:01,040 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:21:01,040 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:21:01,040 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-08-12 22:21:01,040 INFO L430 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:21:01,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:21:01,041 INFO L82 PathProgramCache]: Analyzing trace with hash -1037837710, now seen corresponding path program 29 times [2021-08-12 22:21:01,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:21:01,041 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877079172] [2021-08-12 22:21:01,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:21:01,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:21:01,053 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:01,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:21:01,054 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:01,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-12 22:21:01,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:01,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:21:01,063 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:01,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:21:01,070 INFO L142 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size [2021-08-12 22:21:01,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:21:01,079 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:01,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:21:01,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:01,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:21:01,098 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:01,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:21:01,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:21:01,098 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:21:01,098 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877079172] [2021-08-12 22:21:01,098 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877079172] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:21:01,098 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:21:01,099 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-12 22:21:01,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445833398] [2021-08-12 22:21:01,099 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 22:21:01,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:21:01,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 22:21:01,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-12 22:21:01,100 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 28 [2021-08-12 22:21:01,100 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 611 transitions, 60080 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:01,100 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:21:01,100 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 28 [2021-08-12 22:21:01,100 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:21:01,689 INFO L129 PetriNetUnfolder]: 553/1573 cut-off events. [2021-08-12 22:21:01,689 INFO L130 PetriNetUnfolder]: For 68211/69547 co-relation queries the response was YES. [2021-08-12 22:21:01,696 INFO L84 FinitePrefix]: Finished finitePrefix Result has 50912 conditions, 1573 events. 553/1573 cut-off events. For 68211/69547 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 13556 event pairs, 0 based on Foata normal form. 11/1157 useless extension candidates. Maximal degree in co-relation 49352. Up to 893 conditions per place. [2021-08-12 22:21:01,719 INFO L132 encePairwiseOnDemand]: 18/28 looper letters, 320 selfloop transitions, 112 changer transitions 168/610 dead transitions. [2021-08-12 22:21:01,719 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 610 transitions, 61174 flow [2021-08-12 22:21:01,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 22:21:01,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-12 22:21:01,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2021-08-12 22:21:01,720 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7053571428571429 [2021-08-12 22:21:01,720 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 158 transitions. [2021-08-12 22:21:01,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 158 transitions. [2021-08-12 22:21:01,721 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:21:01,721 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 158 transitions. [2021-08-12 22:21:01,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 19.75) internal successors, (158), 8 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:01,721 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:01,722 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:01,722 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 335 predicate places. [2021-08-12 22:21:01,722 INFO L482 AbstractCegarLoop]: Abstraction has has 362 places, 610 transitions, 61174 flow [2021-08-12 22:21:01,722 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:01,722 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:21:01,722 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:21:01,722 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-08-12 22:21:01,722 INFO L430 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:21:01,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:21:01,723 INFO L82 PathProgramCache]: Analyzing trace with hash -614957546, now seen corresponding path program 30 times [2021-08-12 22:21:01,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:21:01,723 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706974989] [2021-08-12 22:21:01,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:21:01,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:21:01,740 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:01,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:21:01,741 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:01,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-12 22:21:01,744 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:01,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:21:01,750 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:01,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:21:01,757 INFO L142 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size [2021-08-12 22:21:01,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:21:01,764 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:01,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 22:21:01,772 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:01,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:21:01,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:01,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:21:01,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:21:01,780 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:21:01,780 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706974989] [2021-08-12 22:21:01,780 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706974989] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:21:01,780 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:21:01,780 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-12 22:21:01,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715257106] [2021-08-12 22:21:01,780 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 22:21:01,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:21:01,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 22:21:01,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-12 22:21:01,781 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 28 [2021-08-12 22:21:01,781 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 610 transitions, 61174 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:01,781 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:21:01,781 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 28 [2021-08-12 22:21:01,781 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:21:02,388 INFO L129 PetriNetUnfolder]: 553/1571 cut-off events. [2021-08-12 22:21:02,388 INFO L130 PetriNetUnfolder]: For 69005/70369 co-relation queries the response was YES. [2021-08-12 22:21:02,393 INFO L84 FinitePrefix]: Finished finitePrefix Result has 51843 conditions, 1571 events. 553/1571 cut-off events. For 69005/70369 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 13577 event pairs, 0 based on Foata normal form. 11/1155 useless extension candidates. Maximal degree in co-relation 50314. Up to 892 conditions per place. [2021-08-12 22:21:02,407 INFO L132 encePairwiseOnDemand]: 18/28 looper letters, 319 selfloop transitions, 111 changer transitions 169/609 dead transitions. [2021-08-12 22:21:02,407 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 609 transitions, 62264 flow [2021-08-12 22:21:02,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 22:21:02,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-12 22:21:02,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2021-08-12 22:21:02,408 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7008928571428571 [2021-08-12 22:21:02,408 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 157 transitions. [2021-08-12 22:21:02,408 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 157 transitions. [2021-08-12 22:21:02,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:21:02,408 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 157 transitions. [2021-08-12 22:21:02,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 19.625) internal successors, (157), 8 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:02,409 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:02,409 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:02,409 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 342 predicate places. [2021-08-12 22:21:02,409 INFO L482 AbstractCegarLoop]: Abstraction has has 369 places, 609 transitions, 62264 flow [2021-08-12 22:21:02,410 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:02,410 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:21:02,410 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:21:02,410 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-08-12 22:21:02,410 INFO L430 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:21:02,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:21:02,410 INFO L82 PathProgramCache]: Analyzing trace with hash -1904527606, now seen corresponding path program 31 times [2021-08-12 22:21:02,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:21:02,410 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53833560] [2021-08-12 22:21:02,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:21:02,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:21:02,427 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:02,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:21:02,428 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:02,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-12 22:21:02,431 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:02,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:21:02,434 INFO L142 QuantifierPusher]: treesize reduction 5, result has 61.5 percent of original size [2021-08-12 22:21:02,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-08-12 22:21:02,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:02,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-08-12 22:21:02,446 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:02,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 22:21:02,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:02,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:21:02,460 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:02,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:21:02,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:21:02,460 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:21:02,460 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53833560] [2021-08-12 22:21:02,460 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53833560] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:21:02,460 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:21:02,461 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-12 22:21:02,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396885473] [2021-08-12 22:21:02,461 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 22:21:02,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:21:02,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 22:21:02,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-08-12 22:21:02,461 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 28 [2021-08-12 22:21:02,462 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 609 transitions, 62264 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:02,462 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:21:02,462 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 28 [2021-08-12 22:21:02,462 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:21:03,207 INFO L129 PetriNetUnfolder]: 804/2185 cut-off events. [2021-08-12 22:21:03,208 INFO L130 PetriNetUnfolder]: For 100277/101669 co-relation queries the response was YES. [2021-08-12 22:21:03,214 INFO L84 FinitePrefix]: Finished finitePrefix Result has 74593 conditions, 2185 events. 804/2185 cut-off events. For 100277/101669 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 19622 event pairs, 0 based on Foata normal form. 2/1579 useless extension candidates. Maximal degree in co-relation 72141. Up to 1285 conditions per place. [2021-08-12 22:21:03,236 INFO L132 encePairwiseOnDemand]: 18/28 looper letters, 518 selfloop transitions, 150 changer transitions 194/872 dead transitions. [2021-08-12 22:21:03,237 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 872 transitions, 90950 flow [2021-08-12 22:21:03,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 22:21:03,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-12 22:21:03,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2021-08-12 22:21:03,237 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.6964285714285714 [2021-08-12 22:21:03,237 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 156 transitions. [2021-08-12 22:21:03,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 156 transitions. [2021-08-12 22:21:03,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:21:03,238 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 156 transitions. [2021-08-12 22:21:03,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 19.5) internal successors, (156), 8 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:03,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:03,238 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:03,238 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 349 predicate places. [2021-08-12 22:21:03,238 INFO L482 AbstractCegarLoop]: Abstraction has has 376 places, 872 transitions, 90950 flow [2021-08-12 22:21:03,238 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:03,238 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:21:03,239 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:21:03,239 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-08-12 22:21:03,239 INFO L430 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:21:03,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:21:03,239 INFO L82 PathProgramCache]: Analyzing trace with hash 26285394, now seen corresponding path program 32 times [2021-08-12 22:21:03,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:21:03,239 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145948623] [2021-08-12 22:21:03,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:21:03,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:21:03,246 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:03,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:21:03,247 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:03,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-12 22:21:03,249 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:03,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:21:03,254 INFO L142 QuantifierPusher]: treesize reduction 3, result has 72.7 percent of original size [2021-08-12 22:21:03,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-08-12 22:21:03,260 INFO L142 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size [2021-08-12 22:21:03,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:21:03,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:03,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:21:03,276 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:03,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:21:03,281 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:03,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:21:03,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:21:03,282 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:21:03,282 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145948623] [2021-08-12 22:21:03,282 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145948623] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:21:03,282 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:21:03,282 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-12 22:21:03,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014805862] [2021-08-12 22:21:03,283 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 22:21:03,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:21:03,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 22:21:03,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-08-12 22:21:03,283 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 28 [2021-08-12 22:21:03,283 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 872 transitions, 90950 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:03,284 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:21:03,284 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 28 [2021-08-12 22:21:03,284 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:21:04,371 INFO L129 PetriNetUnfolder]: 849/2358 cut-off events. [2021-08-12 22:21:04,371 INFO L130 PetriNetUnfolder]: For 102394/102747 co-relation queries the response was YES. [2021-08-12 22:21:04,379 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80482 conditions, 2358 events. 849/2358 cut-off events. For 102394/102747 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 21715 event pairs, 0 based on Foata normal form. 2/1714 useless extension candidates. Maximal degree in co-relation 77629. Up to 1369 conditions per place. [2021-08-12 22:21:04,410 INFO L132 encePairwiseOnDemand]: 18/28 looper letters, 563 selfloop transitions, 178 changer transitions 195/946 dead transitions. [2021-08-12 22:21:04,411 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 946 transitions, 100350 flow [2021-08-12 22:21:04,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 22:21:04,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-12 22:21:04,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2021-08-12 22:21:04,412 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7008928571428571 [2021-08-12 22:21:04,412 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 157 transitions. [2021-08-12 22:21:04,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 157 transitions. [2021-08-12 22:21:04,412 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:21:04,412 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 157 transitions. [2021-08-12 22:21:04,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 19.625) internal successors, (157), 8 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:04,413 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:04,413 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:04,413 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 356 predicate places. [2021-08-12 22:21:04,413 INFO L482 AbstractCegarLoop]: Abstraction has has 383 places, 946 transitions, 100350 flow [2021-08-12 22:21:04,413 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:04,413 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:21:04,413 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:21:04,413 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-08-12 22:21:04,414 INFO L430 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:21:04,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:21:04,414 INFO L82 PathProgramCache]: Analyzing trace with hash 451791334, now seen corresponding path program 33 times [2021-08-12 22:21:04,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:21:04,414 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505209891] [2021-08-12 22:21:04,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:21:04,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:21:04,421 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:04,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:21:04,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:04,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-12 22:21:04,425 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:04,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:21:04,430 INFO L142 QuantifierPusher]: treesize reduction 3, result has 72.7 percent of original size [2021-08-12 22:21:04,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-08-12 22:21:04,438 INFO L142 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size [2021-08-12 22:21:04,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:21:04,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:04,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:21:04,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:04,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:21:04,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:04,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:21:04,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:21:04,460 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:21:04,460 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505209891] [2021-08-12 22:21:04,460 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505209891] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:21:04,460 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:21:04,460 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-12 22:21:04,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107071158] [2021-08-12 22:21:04,460 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 22:21:04,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:21:04,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 22:21:04,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-12 22:21:04,461 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 28 [2021-08-12 22:21:04,461 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 946 transitions, 100350 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:04,461 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:21:04,461 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 28 [2021-08-12 22:21:04,461 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:21:05,977 INFO L129 PetriNetUnfolder]: 849/2308 cut-off events. [2021-08-12 22:21:05,977 INFO L130 PetriNetUnfolder]: For 115733/117373 co-relation queries the response was YES. [2021-08-12 22:21:05,984 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81824 conditions, 2308 events. 849/2308 cut-off events. For 115733/117373 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 20848 event pairs, 0 based on Foata normal form. 2/1664 useless extension candidates. Maximal degree in co-relation 78985. Up to 1368 conditions per place. [2021-08-12 22:21:06,016 INFO L132 encePairwiseOnDemand]: 18/28 looper letters, 563 selfloop transitions, 176 changer transitions 196/945 dead transitions. [2021-08-12 22:21:06,016 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 945 transitions, 102106 flow [2021-08-12 22:21:06,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 22:21:06,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-12 22:21:06,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2021-08-12 22:21:06,017 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7008928571428571 [2021-08-12 22:21:06,017 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 157 transitions. [2021-08-12 22:21:06,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 157 transitions. [2021-08-12 22:21:06,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:21:06,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 157 transitions. [2021-08-12 22:21:06,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 19.625) internal successors, (157), 8 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:06,018 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:06,018 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:06,018 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 363 predicate places. [2021-08-12 22:21:06,018 INFO L482 AbstractCegarLoop]: Abstraction has has 390 places, 945 transitions, 102106 flow [2021-08-12 22:21:06,019 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:06,019 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:21:06,019 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:21:06,019 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-08-12 22:21:06,019 INFO L430 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:21:06,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:21:06,019 INFO L82 PathProgramCache]: Analyzing trace with hash -2118792234, now seen corresponding path program 34 times [2021-08-12 22:21:06,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:21:06,020 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549234303] [2021-08-12 22:21:06,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:21:06,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:21:06,029 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:06,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:21:06,030 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:06,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-12 22:21:06,033 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:06,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:21:06,038 INFO L142 QuantifierPusher]: treesize reduction 5, result has 61.5 percent of original size [2021-08-12 22:21:06,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-08-12 22:21:06,045 INFO L142 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size [2021-08-12 22:21:06,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:21:06,054 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:06,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:21:06,063 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:06,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:21:06,069 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:06,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:21:06,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:21:06,070 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:21:06,070 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549234303] [2021-08-12 22:21:06,070 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549234303] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:21:06,070 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:21:06,070 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-12 22:21:06,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070028404] [2021-08-12 22:21:06,070 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 22:21:06,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:21:06,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 22:21:06,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-08-12 22:21:06,071 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 28 [2021-08-12 22:21:06,071 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 945 transitions, 102106 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:06,071 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:21:06,071 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 28 [2021-08-12 22:21:06,071 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:21:07,330 INFO L129 PetriNetUnfolder]: 848/2332 cut-off events. [2021-08-12 22:21:07,330 INFO L130 PetriNetUnfolder]: For 118059/119823 co-relation queries the response was YES. [2021-08-12 22:21:07,338 INFO L84 FinitePrefix]: Finished finitePrefix Result has 83354 conditions, 2332 events. 848/2332 cut-off events. For 118059/119823 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 21249 event pairs, 0 based on Foata normal form. 2/1688 useless extension candidates. Maximal degree in co-relation 80469. Up to 1368 conditions per place. [2021-08-12 22:21:07,477 INFO L132 encePairwiseOnDemand]: 18/28 looper letters, 569 selfloop transitions, 169 changer transitions 197/945 dead transitions. [2021-08-12 22:21:07,477 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 945 transitions, 103976 flow [2021-08-12 22:21:07,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 22:21:07,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-12 22:21:07,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2021-08-12 22:21:07,478 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7008928571428571 [2021-08-12 22:21:07,478 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 157 transitions. [2021-08-12 22:21:07,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 157 transitions. [2021-08-12 22:21:07,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:21:07,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 157 transitions. [2021-08-12 22:21:07,479 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 19.625) internal successors, (157), 8 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:07,479 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:07,479 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:07,479 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 370 predicate places. [2021-08-12 22:21:07,479 INFO L482 AbstractCegarLoop]: Abstraction has has 397 places, 945 transitions, 103976 flow [2021-08-12 22:21:07,479 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:07,479 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:21:07,479 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:21:07,479 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-08-12 22:21:07,480 INFO L430 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:21:07,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:21:07,480 INFO L82 PathProgramCache]: Analyzing trace with hash -1870624080, now seen corresponding path program 35 times [2021-08-12 22:21:07,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:21:07,480 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190939979] [2021-08-12 22:21:07,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:21:07,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:21:07,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:07,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:21:07,502 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:07,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-12 22:21:07,504 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:07,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:21:07,507 INFO L142 QuantifierPusher]: treesize reduction 5, result has 61.5 percent of original size [2021-08-12 22:21:07,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-08-12 22:21:07,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:07,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:21:07,519 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:07,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:21:07,525 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:07,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:21:07,531 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:07,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:21:07,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:21:07,531 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:21:07,531 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190939979] [2021-08-12 22:21:07,531 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190939979] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:21:07,531 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:21:07,531 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-12 22:21:07,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076003979] [2021-08-12 22:21:07,531 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 22:21:07,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:21:07,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 22:21:07,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-08-12 22:21:07,532 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 28 [2021-08-12 22:21:07,532 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 945 transitions, 103976 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:07,532 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:21:07,532 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 28 [2021-08-12 22:21:07,532 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:21:08,660 INFO L129 PetriNetUnfolder]: 861/2414 cut-off events. [2021-08-12 22:21:08,660 INFO L130 PetriNetUnfolder]: For 142982/147857 co-relation queries the response was YES. [2021-08-12 22:21:08,667 INFO L84 FinitePrefix]: Finished finitePrefix Result has 87126 conditions, 2414 events. 861/2414 cut-off events. For 142982/147857 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 22334 event pairs, 0 based on Foata normal form. 11/1763 useless extension candidates. Maximal degree in co-relation 83817. Up to 1408 conditions per place. [2021-08-12 22:21:08,693 INFO L132 encePairwiseOnDemand]: 18/28 looper letters, 589 selfloop transitions, 186 changer transitions 198/983 dead transitions. [2021-08-12 22:21:08,693 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 983 transitions, 110078 flow [2021-08-12 22:21:08,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 22:21:08,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-12 22:21:08,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2021-08-12 22:21:08,694 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.6964285714285714 [2021-08-12 22:21:08,694 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 156 transitions. [2021-08-12 22:21:08,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 156 transitions. [2021-08-12 22:21:08,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:21:08,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 156 transitions. [2021-08-12 22:21:08,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 19.5) internal successors, (156), 8 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:08,695 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:08,695 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:08,695 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 377 predicate places. [2021-08-12 22:21:08,695 INFO L482 AbstractCegarLoop]: Abstraction has has 404 places, 983 transitions, 110078 flow [2021-08-12 22:21:08,695 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:08,695 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:21:08,695 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:21:08,695 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-08-12 22:21:08,695 INFO L430 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:21:08,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:21:08,695 INFO L82 PathProgramCache]: Analyzing trace with hash -2053096324, now seen corresponding path program 36 times [2021-08-12 22:21:08,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:21:08,695 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666990148] [2021-08-12 22:21:08,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:21:08,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:21:08,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:08,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:21:08,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:08,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-12 22:21:08,712 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:08,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:21:08,716 INFO L142 QuantifierPusher]: treesize reduction 5, result has 61.5 percent of original size [2021-08-12 22:21:08,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-08-12 22:21:08,722 INFO L142 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size [2021-08-12 22:21:08,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:21:08,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:08,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 22:21:08,740 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:08,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:21:08,745 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:08,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:21:08,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:21:08,746 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:21:08,746 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666990148] [2021-08-12 22:21:08,746 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666990148] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:21:08,746 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:21:08,746 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-12 22:21:08,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165375149] [2021-08-12 22:21:08,747 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 22:21:08,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:21:08,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 22:21:08,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-12 22:21:08,747 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 28 [2021-08-12 22:21:08,747 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 983 transitions, 110078 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:08,747 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:21:08,747 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 28 [2021-08-12 22:21:08,747 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:21:10,030 INFO L129 PetriNetUnfolder]: 861/2384 cut-off events. [2021-08-12 22:21:10,031 INFO L130 PetriNetUnfolder]: For 146510/151619 co-relation queries the response was YES. [2021-08-12 22:21:10,038 INFO L84 FinitePrefix]: Finished finitePrefix Result has 88537 conditions, 2384 events. 861/2384 cut-off events. For 146510/151619 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 21777 event pairs, 0 based on Foata normal form. 11/1733 useless extension candidates. Maximal degree in co-relation 85240. Up to 1407 conditions per place. [2021-08-12 22:21:10,065 INFO L132 encePairwiseOnDemand]: 18/28 looper letters, 597 selfloop transitions, 176 changer transitions 199/982 dead transitions. [2021-08-12 22:21:10,065 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 982 transitions, 111902 flow [2021-08-12 22:21:10,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 22:21:10,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-12 22:21:10,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2021-08-12 22:21:10,066 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7053571428571429 [2021-08-12 22:21:10,066 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 158 transitions. [2021-08-12 22:21:10,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 158 transitions. [2021-08-12 22:21:10,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:21:10,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 158 transitions. [2021-08-12 22:21:10,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 19.75) internal successors, (158), 8 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:10,068 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:10,068 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:10,068 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 384 predicate places. [2021-08-12 22:21:10,068 INFO L482 AbstractCegarLoop]: Abstraction has has 411 places, 982 transitions, 111902 flow [2021-08-12 22:21:10,068 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:10,068 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:21:10,068 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:21:10,068 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-08-12 22:21:10,068 INFO L430 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:21:10,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:21:10,069 INFO L82 PathProgramCache]: Analyzing trace with hash -577463262, now seen corresponding path program 37 times [2021-08-12 22:21:10,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:21:10,069 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154680067] [2021-08-12 22:21:10,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:21:10,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:21:10,076 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:10,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:21:10,076 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:10,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-12 22:21:10,079 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:10,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:21:10,084 INFO L142 QuantifierPusher]: treesize reduction 5, result has 61.5 percent of original size [2021-08-12 22:21:10,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-08-12 22:21:10,090 INFO L142 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size [2021-08-12 22:21:10,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:21:10,098 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:10,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 22:21:10,105 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:10,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:21:10,111 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:10,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:21:10,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:21:10,111 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:21:10,111 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154680067] [2021-08-12 22:21:10,111 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154680067] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:21:10,111 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:21:10,111 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-12 22:21:10,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360085631] [2021-08-12 22:21:10,112 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 22:21:10,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:21:10,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 22:21:10,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-12 22:21:10,112 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 28 [2021-08-12 22:21:10,112 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 982 transitions, 111902 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:10,112 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:21:10,112 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 28 [2021-08-12 22:21:10,112 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:21:11,375 INFO L129 PetriNetUnfolder]: 861/2395 cut-off events. [2021-08-12 22:21:11,375 INFO L130 PetriNetUnfolder]: For 137431/139567 co-relation queries the response was YES. [2021-08-12 22:21:11,382 INFO L84 FinitePrefix]: Finished finitePrefix Result has 90018 conditions, 2395 events. 861/2395 cut-off events. For 137431/139567 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 22064 event pairs, 0 based on Foata normal form. 2/1735 useless extension candidates. Maximal degree in co-relation 86735. Up to 1406 conditions per place. [2021-08-12 22:21:11,409 INFO L132 encePairwiseOnDemand]: 18/28 looper letters, 591 selfloop transitions, 180 changer transitions 200/981 dead transitions. [2021-08-12 22:21:11,409 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 981 transitions, 113722 flow [2021-08-12 22:21:11,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 22:21:11,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-12 22:21:11,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2021-08-12 22:21:11,410 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7008928571428571 [2021-08-12 22:21:11,410 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 157 transitions. [2021-08-12 22:21:11,410 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 157 transitions. [2021-08-12 22:21:11,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:21:11,410 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 157 transitions. [2021-08-12 22:21:11,410 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 19.625) internal successors, (157), 8 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:11,410 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:11,411 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:11,411 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 391 predicate places. [2021-08-12 22:21:11,411 INFO L482 AbstractCegarLoop]: Abstraction has has 418 places, 981 transitions, 113722 flow [2021-08-12 22:21:11,411 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:11,411 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:21:11,411 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:21:11,411 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-08-12 22:21:11,411 INFO L430 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:21:11,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:21:11,411 INFO L82 PathProgramCache]: Analyzing trace with hash 936135294, now seen corresponding path program 38 times [2021-08-12 22:21:11,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:21:11,412 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005544245] [2021-08-12 22:21:11,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:21:11,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:21:11,430 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:11,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:21:11,431 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:11,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-12 22:21:11,433 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:11,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:21:11,439 INFO L142 QuantifierPusher]: treesize reduction 3, result has 72.7 percent of original size [2021-08-12 22:21:11,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-08-12 22:21:11,446 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:11,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:21:11,451 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:11,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:21:11,458 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:11,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:21:11,464 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:11,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:21:11,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:21:11,464 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:21:11,464 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005544245] [2021-08-12 22:21:11,464 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005544245] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:21:11,465 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:21:11,465 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-12 22:21:11,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863088489] [2021-08-12 22:21:11,465 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 22:21:11,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:21:11,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 22:21:11,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-12 22:21:11,465 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 28 [2021-08-12 22:21:11,466 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 981 transitions, 113722 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:11,466 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:21:11,466 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 28 [2021-08-12 22:21:11,466 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:21:12,801 INFO L129 PetriNetUnfolder]: 860/2437 cut-off events. [2021-08-12 22:21:12,801 INFO L130 PetriNetUnfolder]: For 150907/153167 co-relation queries the response was YES. [2021-08-12 22:21:12,807 INFO L84 FinitePrefix]: Finished finitePrefix Result has 92533 conditions, 2437 events. 860/2437 cut-off events. For 150907/153167 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 22680 event pairs, 0 based on Foata normal form. 2/1772 useless extension candidates. Maximal degree in co-relation 88870. Up to 1422 conditions per place. [2021-08-12 22:21:12,835 INFO L132 encePairwiseOnDemand]: 18/28 looper letters, 593 selfloop transitions, 193 changer transitions 201/997 dead transitions. [2021-08-12 22:21:12,835 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 997 transitions, 117576 flow [2021-08-12 22:21:12,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 22:21:12,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-12 22:21:12,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2021-08-12 22:21:12,836 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.6964285714285714 [2021-08-12 22:21:12,836 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 156 transitions. [2021-08-12 22:21:12,836 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 156 transitions. [2021-08-12 22:21:12,836 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:21:12,836 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 156 transitions. [2021-08-12 22:21:12,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 19.5) internal successors, (156), 8 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:12,836 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:12,836 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:12,836 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 398 predicate places. [2021-08-12 22:21:12,837 INFO L482 AbstractCegarLoop]: Abstraction has has 425 places, 997 transitions, 117576 flow [2021-08-12 22:21:12,837 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:12,837 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:21:12,837 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:21:12,837 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-08-12 22:21:12,837 INFO L430 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:21:12,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:21:12,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1423922160, now seen corresponding path program 39 times [2021-08-12 22:21:12,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:21:12,837 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237763133] [2021-08-12 22:21:12,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:21:12,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:21:12,848 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:12,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:21:12,850 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:12,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-12 22:21:12,852 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:12,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:21:12,865 INFO L142 QuantifierPusher]: treesize reduction 5, result has 61.5 percent of original size [2021-08-12 22:21:12,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-08-12 22:21:12,873 INFO L142 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size [2021-08-12 22:21:12,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:21:12,881 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:12,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 22:21:12,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:12,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:21:12,893 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:12,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:21:12,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:21:12,893 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:21:12,893 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237763133] [2021-08-12 22:21:12,893 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237763133] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:21:12,893 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:21:12,893 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-12 22:21:12,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267484086] [2021-08-12 22:21:12,893 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 22:21:12,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:21:12,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 22:21:12,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-12 22:21:12,894 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 28 [2021-08-12 22:21:12,894 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 997 transitions, 117576 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:12,894 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:21:12,894 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 28 [2021-08-12 22:21:12,894 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:21:14,138 INFO L129 PetriNetUnfolder]: 859/2440 cut-off events. [2021-08-12 22:21:14,138 INFO L130 PetriNetUnfolder]: For 168473/174284 co-relation queries the response was YES. [2021-08-12 22:21:14,145 INFO L84 FinitePrefix]: Finished finitePrefix Result has 94079 conditions, 2440 events. 859/2440 cut-off events. For 168473/174284 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 22824 event pairs, 0 based on Foata normal form. 11/1784 useless extension candidates. Maximal degree in co-relation 90361. Up to 1422 conditions per place. [2021-08-12 22:21:14,173 INFO L132 encePairwiseOnDemand]: 18/28 looper letters, 604 selfloop transitions, 181 changer transitions 202/997 dead transitions. [2021-08-12 22:21:14,173 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 997 transitions, 119550 flow [2021-08-12 22:21:14,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 22:21:14,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-12 22:21:14,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2021-08-12 22:21:14,173 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7053571428571429 [2021-08-12 22:21:14,174 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 158 transitions. [2021-08-12 22:21:14,174 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 158 transitions. [2021-08-12 22:21:14,174 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:21:14,174 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 158 transitions. [2021-08-12 22:21:14,174 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 19.75) internal successors, (158), 8 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:14,174 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:14,174 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:14,174 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 405 predicate places. [2021-08-12 22:21:14,175 INFO L482 AbstractCegarLoop]: Abstraction has has 432 places, 997 transitions, 119550 flow [2021-08-12 22:21:14,175 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:14,175 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:21:14,175 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:21:14,175 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-08-12 22:21:14,175 INFO L430 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:21:14,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:21:14,175 INFO L82 PathProgramCache]: Analyzing trace with hash -1578987990, now seen corresponding path program 40 times [2021-08-12 22:21:14,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:21:14,175 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710012566] [2021-08-12 22:21:14,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:21:14,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:21:14,182 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:14,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:21:14,182 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:14,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-12 22:21:14,185 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:14,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:21:14,189 INFO L142 QuantifierPusher]: treesize reduction 5, result has 61.5 percent of original size [2021-08-12 22:21:14,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-08-12 22:21:14,195 INFO L142 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size [2021-08-12 22:21:14,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:21:14,204 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:14,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:21:14,211 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:14,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:21:14,218 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:14,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:21:14,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:21:14,218 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:21:14,218 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710012566] [2021-08-12 22:21:14,218 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710012566] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:21:14,218 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:21:14,218 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-12 22:21:14,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923306318] [2021-08-12 22:21:14,219 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 22:21:14,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:21:14,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 22:21:14,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-08-12 22:21:14,219 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 28 [2021-08-12 22:21:14,219 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 997 transitions, 119550 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:14,219 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:21:14,219 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 28 [2021-08-12 22:21:14,220 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:21:15,673 INFO L129 PetriNetUnfolder]: 859/2450 cut-off events. [2021-08-12 22:21:15,673 INFO L130 PetriNetUnfolder]: For 158776/161284 co-relation queries the response was YES. [2021-08-12 22:21:15,680 INFO L84 FinitePrefix]: Finished finitePrefix Result has 95574 conditions, 2450 events. 859/2450 cut-off events. For 158776/161284 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 23001 event pairs, 0 based on Foata normal form. 2/1785 useless extension candidates. Maximal degree in co-relation 91869. Up to 1421 conditions per place. [2021-08-12 22:21:15,709 INFO L132 encePairwiseOnDemand]: 18/28 looper letters, 610 selfloop transitions, 173 changer transitions 203/996 dead transitions. [2021-08-12 22:21:15,709 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 996 transitions, 121394 flow [2021-08-12 22:21:15,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 22:21:15,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-12 22:21:15,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2021-08-12 22:21:15,710 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7053571428571429 [2021-08-12 22:21:15,710 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 158 transitions. [2021-08-12 22:21:15,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 158 transitions. [2021-08-12 22:21:15,710 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:21:15,710 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 158 transitions. [2021-08-12 22:21:15,710 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 19.75) internal successors, (158), 8 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:15,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:15,711 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:15,711 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 412 predicate places. [2021-08-12 22:21:15,711 INFO L482 AbstractCegarLoop]: Abstraction has has 439 places, 996 transitions, 121394 flow [2021-08-12 22:21:15,711 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:15,711 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:21:15,711 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:21:15,711 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-08-12 22:21:15,711 INFO L430 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:21:15,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:21:15,712 INFO L82 PathProgramCache]: Analyzing trace with hash -519244260, now seen corresponding path program 41 times [2021-08-12 22:21:15,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:21:15,712 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111856999] [2021-08-12 22:21:15,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:21:15,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:21:15,720 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:15,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:21:15,720 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:15,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-12 22:21:15,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:15,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:21:15,727 INFO L142 QuantifierPusher]: treesize reduction 5, result has 61.5 percent of original size [2021-08-12 22:21:15,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-08-12 22:21:15,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:15,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-08-12 22:21:15,738 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:15,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 22:21:15,746 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:15,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:21:15,752 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:15,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:21:15,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:21:15,752 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:21:15,752 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111856999] [2021-08-12 22:21:15,752 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111856999] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:21:15,753 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:21:15,753 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-12 22:21:15,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973012274] [2021-08-12 22:21:15,753 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 22:21:15,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:21:15,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 22:21:15,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-08-12 22:21:15,753 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 28 [2021-08-12 22:21:15,754 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 996 transitions, 121394 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:15,754 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:21:15,754 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 28 [2021-08-12 22:21:15,754 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:21:17,049 INFO L129 PetriNetUnfolder]: 858/2510 cut-off events. [2021-08-12 22:21:17,049 INFO L130 PetriNetUnfolder]: For 178315/180947 co-relation queries the response was YES. [2021-08-12 22:21:17,056 INFO L84 FinitePrefix]: Finished finitePrefix Result has 98539 conditions, 2510 events. 858/2510 cut-off events. For 178315/180947 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 23943 event pairs, 0 based on Foata normal form. 2/1838 useless extension candidates. Maximal degree in co-relation 94297. Up to 1443 conditions per place. [2021-08-12 22:21:17,191 INFO L132 encePairwiseOnDemand]: 18/28 looper letters, 626 selfloop transitions, 178 changer transitions 204/1018 dead transitions. [2021-08-12 22:21:17,191 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 1018 transitions, 126118 flow [2021-08-12 22:21:17,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 22:21:17,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-12 22:21:17,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2021-08-12 22:21:17,192 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7008928571428571 [2021-08-12 22:21:17,192 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 157 transitions. [2021-08-12 22:21:17,192 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 157 transitions. [2021-08-12 22:21:17,192 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:21:17,192 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 157 transitions. [2021-08-12 22:21:17,192 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 19.625) internal successors, (157), 8 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:17,193 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:17,193 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:17,193 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 419 predicate places. [2021-08-12 22:21:17,193 INFO L482 AbstractCegarLoop]: Abstraction has has 446 places, 1018 transitions, 126118 flow [2021-08-12 22:21:17,193 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:17,193 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:21:17,193 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:21:17,193 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-08-12 22:21:17,193 INFO L430 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:21:17,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:21:17,194 INFO L82 PathProgramCache]: Analyzing trace with hash -196926912, now seen corresponding path program 42 times [2021-08-12 22:21:17,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:21:17,194 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063153351] [2021-08-12 22:21:17,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:21:17,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:21:17,208 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:17,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:21:17,209 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:17,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-12 22:21:17,211 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:17,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:21:17,217 INFO L142 QuantifierPusher]: treesize reduction 5, result has 61.5 percent of original size [2021-08-12 22:21:17,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-08-12 22:21:17,223 INFO L142 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size [2021-08-12 22:21:17,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:21:17,230 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:17,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 22:21:17,237 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:17,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:21:17,242 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:17,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:21:17,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:21:17,242 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:21:17,242 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063153351] [2021-08-12 22:21:17,242 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063153351] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:21:17,242 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:21:17,242 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-12 22:21:17,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214198439] [2021-08-12 22:21:17,243 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 22:21:17,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:21:17,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 22:21:17,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-08-12 22:21:17,243 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 28 [2021-08-12 22:21:17,243 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 1018 transitions, 126118 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:17,244 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:21:17,244 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 28 [2021-08-12 22:21:17,244 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:21:18,675 INFO L129 PetriNetUnfolder]: 858/2509 cut-off events. [2021-08-12 22:21:18,675 INFO L130 PetriNetUnfolder]: For 180046/182802 co-relation queries the response was YES. [2021-08-12 22:21:18,683 INFO L84 FinitePrefix]: Finished finitePrefix Result has 100035 conditions, 2509 events. 858/2509 cut-off events. For 180046/182802 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 23972 event pairs, 0 based on Foata normal form. 2/1837 useless extension candidates. Maximal degree in co-relation 95802. Up to 1442 conditions per place. [2021-08-12 22:21:18,722 INFO L132 encePairwiseOnDemand]: 18/28 looper letters, 629 selfloop transitions, 173 changer transitions 205/1017 dead transitions. [2021-08-12 22:21:18,722 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 1017 transitions, 128000 flow [2021-08-12 22:21:18,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 22:21:18,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-12 22:21:18,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2021-08-12 22:21:18,723 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7053571428571429 [2021-08-12 22:21:18,723 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 158 transitions. [2021-08-12 22:21:18,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 158 transitions. [2021-08-12 22:21:18,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:21:18,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 158 transitions. [2021-08-12 22:21:18,723 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 19.75) internal successors, (158), 8 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:18,723 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:18,723 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:18,724 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 426 predicate places. [2021-08-12 22:21:18,724 INFO L482 AbstractCegarLoop]: Abstraction has has 453 places, 1017 transitions, 128000 flow [2021-08-12 22:21:18,724 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:18,724 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:21:18,724 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:21:18,724 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-08-12 22:21:18,724 INFO L430 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:21:18,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:21:18,724 INFO L82 PathProgramCache]: Analyzing trace with hash -2050470548, now seen corresponding path program 43 times [2021-08-12 22:21:18,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:21:18,724 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917006958] [2021-08-12 22:21:18,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:21:18,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:21:18,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:18,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:21:18,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:18,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-12 22:21:18,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:18,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:21:18,740 INFO L142 QuantifierPusher]: treesize reduction 5, result has 61.5 percent of original size [2021-08-12 22:21:18,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-08-12 22:21:18,746 INFO L142 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size [2021-08-12 22:21:18,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:21:18,754 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:18,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:21:18,761 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:18,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:21:18,767 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:18,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:21:18,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:21:18,767 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:21:18,767 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917006958] [2021-08-12 22:21:18,768 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917006958] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:21:18,769 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:21:18,769 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-12 22:21:18,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15623278] [2021-08-12 22:21:18,769 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 22:21:18,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:21:18,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 22:21:18,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-12 22:21:18,770 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 28 [2021-08-12 22:21:18,770 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 1017 transitions, 128000 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:18,770 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:21:18,770 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 28 [2021-08-12 22:21:18,770 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:21:20,107 INFO L129 PetriNetUnfolder]: 858/2509 cut-off events. [2021-08-12 22:21:20,107 INFO L130 PetriNetUnfolder]: For 183062/185942 co-relation queries the response was YES. [2021-08-12 22:21:20,115 INFO L84 FinitePrefix]: Finished finitePrefix Result has 101527 conditions, 2509 events. 858/2509 cut-off events. For 183062/185942 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 23938 event pairs, 0 based on Foata normal form. 2/1837 useless extension candidates. Maximal degree in co-relation 97305. Up to 1441 conditions per place. [2021-08-12 22:21:20,153 INFO L132 encePairwiseOnDemand]: 18/28 looper letters, 623 selfloop transitions, 177 changer transitions 206/1016 dead transitions. [2021-08-12 22:21:20,154 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 1016 transitions, 129878 flow [2021-08-12 22:21:20,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 22:21:20,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-12 22:21:20,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2021-08-12 22:21:20,155 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7008928571428571 [2021-08-12 22:21:20,155 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 157 transitions. [2021-08-12 22:21:20,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 157 transitions. [2021-08-12 22:21:20,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:21:20,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 157 transitions. [2021-08-12 22:21:20,155 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 19.625) internal successors, (157), 8 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:20,155 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:20,155 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:20,155 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 433 predicate places. [2021-08-12 22:21:20,155 INFO L482 AbstractCegarLoop]: Abstraction has has 460 places, 1016 transitions, 129878 flow [2021-08-12 22:21:20,156 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:20,156 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:21:20,156 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:21:20,156 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-08-12 22:21:20,156 INFO L430 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:21:20,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:21:20,156 INFO L82 PathProgramCache]: Analyzing trace with hash -1333327232, now seen corresponding path program 44 times [2021-08-12 22:21:20,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:21:20,156 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249015856] [2021-08-12 22:21:20,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:21:20,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:21:20,164 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:20,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:21:20,165 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:20,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-12 22:21:20,167 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:20,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:21:20,172 INFO L142 QuantifierPusher]: treesize reduction 5, result has 61.5 percent of original size [2021-08-12 22:21:20,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-08-12 22:21:20,179 INFO L142 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size [2021-08-12 22:21:20,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:21:20,323 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2021-08-12 22:21:20,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:20,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:21:20,343 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:20,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:21:20,349 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:20,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:21:20,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:21:20,349 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:21:20,350 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249015856] [2021-08-12 22:21:20,350 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249015856] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:21:20,350 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:21:20,350 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-12 22:21:20,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817561400] [2021-08-12 22:21:20,351 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 22:21:20,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:21:20,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 22:21:20,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-12 22:21:20,351 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 28 [2021-08-12 22:21:20,352 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 1016 transitions, 129878 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:20,352 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:21:20,352 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 28 [2021-08-12 22:21:20,352 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:21:21,706 INFO L129 PetriNetUnfolder]: 858/2516 cut-off events. [2021-08-12 22:21:21,706 INFO L130 PetriNetUnfolder]: For 202261/209242 co-relation queries the response was YES. [2021-08-12 22:21:21,713 INFO L84 FinitePrefix]: Finished finitePrefix Result has 103030 conditions, 2516 events. 858/2516 cut-off events. For 202261/209242 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 24125 event pairs, 0 based on Foata normal form. 11/1853 useless extension candidates. Maximal degree in co-relation 98821. Up to 1440 conditions per place. [2021-08-12 22:21:21,743 INFO L132 encePairwiseOnDemand]: 18/28 looper letters, 616 selfloop transitions, 182 changer transitions 207/1015 dead transitions. [2021-08-12 22:21:21,743 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 467 places, 1015 transitions, 131752 flow [2021-08-12 22:21:21,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 22:21:21,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-12 22:21:21,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2021-08-12 22:21:21,744 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7008928571428571 [2021-08-12 22:21:21,744 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 157 transitions. [2021-08-12 22:21:21,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 157 transitions. [2021-08-12 22:21:21,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:21:21,744 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 157 transitions. [2021-08-12 22:21:21,744 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 19.625) internal successors, (157), 8 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:21,745 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:21,745 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:21,745 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 440 predicate places. [2021-08-12 22:21:21,745 INFO L482 AbstractCegarLoop]: Abstraction has has 467 places, 1015 transitions, 131752 flow [2021-08-12 22:21:21,745 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:21,745 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:21:21,745 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:21:21,745 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-08-12 22:21:21,745 INFO L430 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:21:21,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:21:21,746 INFO L82 PathProgramCache]: Analyzing trace with hash 635863280, now seen corresponding path program 45 times [2021-08-12 22:21:21,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:21:21,746 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110043903] [2021-08-12 22:21:21,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:21:21,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:21:21,764 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:21,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:21:21,765 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:21,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-12 22:21:21,767 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:21,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:21:21,773 INFO L142 QuantifierPusher]: treesize reduction 5, result has 61.5 percent of original size [2021-08-12 22:21:21,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-08-12 22:21:21,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:21,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-08-12 22:21:21,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:21,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 22:21:21,791 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:21,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:21:21,797 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:21,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:21:21,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:21:21,801 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:21:21,801 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110043903] [2021-08-12 22:21:21,801 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110043903] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:21:21,801 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:21:21,801 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-12 22:21:21,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270151921] [2021-08-12 22:21:21,801 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 22:21:21,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:21:21,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 22:21:21,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-12 22:21:21,802 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 28 [2021-08-12 22:21:21,802 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 1015 transitions, 131752 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:21,802 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:21:21,802 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 28 [2021-08-12 22:21:21,802 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:21:23,210 INFO L129 PetriNetUnfolder]: 858/2492 cut-off events. [2021-08-12 22:21:23,211 INFO L130 PetriNetUnfolder]: For 206499/213714 co-relation queries the response was YES. [2021-08-12 22:21:23,219 INFO L84 FinitePrefix]: Finished finitePrefix Result has 104478 conditions, 2492 events. 858/2492 cut-off events. For 206499/213714 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 23667 event pairs, 0 based on Foata normal form. 11/1829 useless extension candidates. Maximal degree in co-relation 100284. Up to 1439 conditions per place. [2021-08-12 22:21:23,258 INFO L132 encePairwiseOnDemand]: 18/28 looper letters, 609 selfloop transitions, 187 changer transitions 208/1014 dead transitions. [2021-08-12 22:21:23,259 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 1014 transitions, 133622 flow [2021-08-12 22:21:23,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 22:21:23,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-12 22:21:23,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2021-08-12 22:21:23,259 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.6964285714285714 [2021-08-12 22:21:23,259 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 156 transitions. [2021-08-12 22:21:23,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 156 transitions. [2021-08-12 22:21:23,260 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:21:23,260 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 156 transitions. [2021-08-12 22:21:23,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 19.5) internal successors, (156), 8 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:23,260 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:23,260 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:23,261 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 447 predicate places. [2021-08-12 22:21:23,261 INFO L482 AbstractCegarLoop]: Abstraction has has 474 places, 1014 transitions, 133622 flow [2021-08-12 22:21:23,261 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:23,261 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:21:23,261 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:21:23,261 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-08-12 22:21:23,261 INFO L430 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:21:23,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:21:23,261 INFO L82 PathProgramCache]: Analyzing trace with hash -16353360, now seen corresponding path program 46 times [2021-08-12 22:21:23,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:21:23,262 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600922458] [2021-08-12 22:21:23,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:21:23,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:21:23,275 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:23,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:21:23,275 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:23,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-12 22:21:23,278 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:23,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:21:23,283 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:23,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:21:23,289 INFO L142 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size [2021-08-12 22:21:23,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:21:23,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:23,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:21:23,303 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:23,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:21:23,308 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:23,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:21:23,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:21:23,308 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:21:23,308 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600922458] [2021-08-12 22:21:23,309 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600922458] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:21:23,309 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:21:23,309 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-12 22:21:23,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259396547] [2021-08-12 22:21:23,311 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 22:21:23,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:21:23,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 22:21:23,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-08-12 22:21:23,311 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 28 [2021-08-12 22:21:23,312 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 474 places, 1014 transitions, 133622 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:23,312 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:21:23,312 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 28 [2021-08-12 22:21:23,312 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:21:24,811 INFO L129 PetriNetUnfolder]: 858/2486 cut-off events. [2021-08-12 22:21:24,811 INFO L130 PetriNetUnfolder]: For 192478/195730 co-relation queries the response was YES. [2021-08-12 22:21:24,818 INFO L84 FinitePrefix]: Finished finitePrefix Result has 105946 conditions, 2486 events. 858/2486 cut-off events. For 192478/195730 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 23620 event pairs, 0 based on Foata normal form. 2/1814 useless extension candidates. Maximal degree in co-relation 101769. Up to 1438 conditions per place. [2021-08-12 22:21:24,849 INFO L132 encePairwiseOnDemand]: 18/28 looper letters, 616 selfloop transitions, 178 changer transitions 209/1013 dead transitions. [2021-08-12 22:21:24,850 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 481 places, 1013 transitions, 135488 flow [2021-08-12 22:21:24,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 22:21:24,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-12 22:21:24,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 159 transitions. [2021-08-12 22:21:24,850 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7098214285714286 [2021-08-12 22:21:24,851 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 159 transitions. [2021-08-12 22:21:24,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 159 transitions. [2021-08-12 22:21:24,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:21:24,851 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 159 transitions. [2021-08-12 22:21:24,851 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 19.875) internal successors, (159), 8 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:24,851 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:24,852 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:24,852 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 454 predicate places. [2021-08-12 22:21:24,852 INFO L482 AbstractCegarLoop]: Abstraction has has 481 places, 1013 transitions, 135488 flow [2021-08-12 22:21:24,852 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:24,852 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:21:24,852 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:21:24,852 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-08-12 22:21:24,852 INFO L430 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:21:24,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:21:24,852 INFO L82 PathProgramCache]: Analyzing trace with hash 318220930, now seen corresponding path program 47 times [2021-08-12 22:21:24,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:21:24,853 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530667686] [2021-08-12 22:21:24,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:21:24,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:21:24,862 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:24,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:21:24,863 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:24,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-12 22:21:24,865 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:24,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:21:24,870 INFO L142 QuantifierPusher]: treesize reduction 5, result has 61.5 percent of original size [2021-08-12 22:21:24,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-08-12 22:21:24,876 INFO L142 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size [2021-08-12 22:21:24,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:21:24,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:24,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 22:21:24,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:24,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:21:24,899 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:24,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:21:24,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:21:24,899 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:21:24,899 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530667686] [2021-08-12 22:21:24,899 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530667686] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:21:24,899 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:21:24,899 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-12 22:21:24,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149817762] [2021-08-12 22:21:24,900 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 22:21:24,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:21:24,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 22:21:24,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-08-12 22:21:24,900 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 28 [2021-08-12 22:21:24,901 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 481 places, 1013 transitions, 135488 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:24,901 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:21:24,901 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 28 [2021-08-12 22:21:24,901 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:21:26,280 INFO L129 PetriNetUnfolder]: 857/2486 cut-off events. [2021-08-12 22:21:26,280 INFO L130 PetriNetUnfolder]: For 197269/200645 co-relation queries the response was YES. [2021-08-12 22:21:26,287 INFO L84 FinitePrefix]: Finished finitePrefix Result has 107507 conditions, 2486 events. 857/2486 cut-off events. For 197269/200645 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 23582 event pairs, 0 based on Foata normal form. 2/1814 useless extension candidates. Maximal degree in co-relation 103274. Up to 1438 conditions per place. [2021-08-12 22:21:26,318 INFO L132 encePairwiseOnDemand]: 18/28 looper letters, 606 selfloop transitions, 187 changer transitions 210/1013 dead transitions. [2021-08-12 22:21:26,318 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 488 places, 1013 transitions, 137494 flow [2021-08-12 22:21:26,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 22:21:26,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-12 22:21:26,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2021-08-12 22:21:26,319 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7053571428571429 [2021-08-12 22:21:26,319 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 158 transitions. [2021-08-12 22:21:26,319 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 158 transitions. [2021-08-12 22:21:26,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:21:26,320 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 158 transitions. [2021-08-12 22:21:26,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 19.75) internal successors, (158), 8 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:26,320 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:26,320 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:26,320 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 461 predicate places. [2021-08-12 22:21:26,320 INFO L482 AbstractCegarLoop]: Abstraction has has 488 places, 1013 transitions, 137494 flow [2021-08-12 22:21:26,320 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:26,320 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:21:26,321 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:21:26,321 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-08-12 22:21:26,321 INFO L430 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:21:26,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:21:26,321 INFO L82 PathProgramCache]: Analyzing trace with hash 892937810, now seen corresponding path program 48 times [2021-08-12 22:21:26,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:21:26,321 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357457698] [2021-08-12 22:21:26,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:21:26,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:21:26,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:26,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:21:26,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:26,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-12 22:21:26,332 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:26,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:21:26,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:26,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:21:26,343 INFO L142 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size [2021-08-12 22:21:26,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:21:26,351 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:26,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:21:26,358 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:26,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:21:26,364 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:26,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:21:26,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:21:26,365 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:21:26,365 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357457698] [2021-08-12 22:21:26,365 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357457698] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:21:26,365 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:21:26,365 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-12 22:21:26,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465299400] [2021-08-12 22:21:26,365 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 22:21:26,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:21:26,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 22:21:26,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-12 22:21:26,366 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 28 [2021-08-12 22:21:26,366 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 488 places, 1013 transitions, 137494 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:26,366 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:21:26,366 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 28 [2021-08-12 22:21:26,366 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:21:27,825 INFO L129 PetriNetUnfolder]: 857/2510 cut-off events. [2021-08-12 22:21:27,826 INFO L130 PetriNetUnfolder]: For 201102/204602 co-relation queries the response was YES. [2021-08-12 22:21:27,833 INFO L84 FinitePrefix]: Finished finitePrefix Result has 109035 conditions, 2510 events. 857/2510 cut-off events. For 201102/204602 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 24050 event pairs, 0 based on Foata normal form. 2/1838 useless extension candidates. Maximal degree in co-relation 104822. Up to 1437 conditions per place. [2021-08-12 22:21:27,865 INFO L132 encePairwiseOnDemand]: 18/28 looper letters, 615 selfloop transitions, 176 changer transitions 211/1012 dead transitions. [2021-08-12 22:21:27,866 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 495 places, 1012 transitions, 139354 flow [2021-08-12 22:21:27,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 22:21:27,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-12 22:21:27,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 159 transitions. [2021-08-12 22:21:27,866 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7098214285714286 [2021-08-12 22:21:27,866 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 159 transitions. [2021-08-12 22:21:27,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 159 transitions. [2021-08-12 22:21:27,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:21:27,867 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 159 transitions. [2021-08-12 22:21:27,867 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 19.875) internal successors, (159), 8 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:27,867 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:27,867 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:27,868 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 468 predicate places. [2021-08-12 22:21:27,868 INFO L482 AbstractCegarLoop]: Abstraction has has 495 places, 1012 transitions, 139354 flow [2021-08-12 22:21:27,868 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:27,868 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:21:27,868 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:21:27,868 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-08-12 22:21:27,868 INFO L430 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:21:27,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:21:27,868 INFO L82 PathProgramCache]: Analyzing trace with hash -582343972, now seen corresponding path program 49 times [2021-08-12 22:21:27,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:21:27,868 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860984662] [2021-08-12 22:21:27,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:21:27,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:21:27,877 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:27,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:21:27,878 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:27,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-12 22:21:27,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:27,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:21:27,886 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:27,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:21:27,892 INFO L142 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size [2021-08-12 22:21:27,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:21:27,900 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:27,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 22:21:27,907 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:27,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:21:28,061 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 5 [2021-08-12 22:21:28,062 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:28,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:21:28,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:21:28,062 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:21:28,062 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860984662] [2021-08-12 22:21:28,062 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860984662] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:21:28,062 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:21:28,063 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-12 22:21:28,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686177727] [2021-08-12 22:21:28,063 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 22:21:28,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:21:28,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 22:21:28,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-12 22:21:28,063 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 28 [2021-08-12 22:21:28,063 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 495 places, 1012 transitions, 139354 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:28,063 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:21:28,063 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 28 [2021-08-12 22:21:28,063 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:21:29,499 INFO L129 PetriNetUnfolder]: 857/2478 cut-off events. [2021-08-12 22:21:29,499 INFO L130 PetriNetUnfolder]: For 203674/207298 co-relation queries the response was YES. [2021-08-12 22:21:29,506 INFO L84 FinitePrefix]: Finished finitePrefix Result has 110451 conditions, 2478 events. 857/2478 cut-off events. For 203674/207298 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 23511 event pairs, 0 based on Foata normal form. 2/1806 useless extension candidates. Maximal degree in co-relation 106260. Up to 1436 conditions per place. [2021-08-12 22:21:29,537 INFO L132 encePairwiseOnDemand]: 18/28 looper letters, 615 selfloop transitions, 174 changer transitions 212/1011 dead transitions. [2021-08-12 22:21:29,537 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 502 places, 1011 transitions, 141210 flow [2021-08-12 22:21:29,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 22:21:29,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-12 22:21:29,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2021-08-12 22:21:29,538 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7053571428571429 [2021-08-12 22:21:29,538 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 158 transitions. [2021-08-12 22:21:29,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 158 transitions. [2021-08-12 22:21:29,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:21:29,538 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 158 transitions. [2021-08-12 22:21:29,539 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 19.75) internal successors, (158), 8 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:29,539 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:29,539 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:29,539 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 475 predicate places. [2021-08-12 22:21:29,539 INFO L482 AbstractCegarLoop]: Abstraction has has 502 places, 1011 transitions, 141210 flow [2021-08-12 22:21:29,539 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:29,539 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:21:29,540 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:21:29,540 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-08-12 22:21:29,540 INFO L430 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:21:29,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:21:29,540 INFO L82 PathProgramCache]: Analyzing trace with hash -1488787358, now seen corresponding path program 50 times [2021-08-12 22:21:29,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:21:29,540 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115317613] [2021-08-12 22:21:29,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:21:29,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:21:29,549 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:29,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:21:29,549 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:29,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-12 22:21:29,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:29,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:21:29,557 INFO L142 QuantifierPusher]: treesize reduction 5, result has 61.5 percent of original size [2021-08-12 22:21:29,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-08-12 22:21:29,563 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:29,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:21:29,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:29,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:21:29,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:29,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:21:29,582 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:29,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:21:29,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:21:29,582 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:21:29,582 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115317613] [2021-08-12 22:21:29,582 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115317613] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:21:29,582 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:21:29,582 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-12 22:21:29,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607498072] [2021-08-12 22:21:29,583 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 22:21:29,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:21:29,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 22:21:29,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-08-12 22:21:29,583 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 28 [2021-08-12 22:21:29,583 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 502 places, 1011 transitions, 141210 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:29,583 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:21:29,584 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 28 [2021-08-12 22:21:29,584 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:21:31,005 INFO L129 PetriNetUnfolder]: 857/2502 cut-off events. [2021-08-12 22:21:31,006 INFO L130 PetriNetUnfolder]: For 205597/209345 co-relation queries the response was YES. [2021-08-12 22:21:31,013 INFO L84 FinitePrefix]: Finished finitePrefix Result has 111978 conditions, 2502 events. 857/2502 cut-off events. For 205597/209345 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 23928 event pairs, 0 based on Foata normal form. 2/1830 useless extension candidates. Maximal degree in co-relation 107811. Up to 1435 conditions per place. [2021-08-12 22:21:31,046 INFO L132 encePairwiseOnDemand]: 18/28 looper letters, 599 selfloop transitions, 188 changer transitions 213/1010 dead transitions. [2021-08-12 22:21:31,046 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 509 places, 1010 transitions, 143062 flow [2021-08-12 22:21:31,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 22:21:31,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-12 22:21:31,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2021-08-12 22:21:31,047 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7008928571428571 [2021-08-12 22:21:31,047 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 157 transitions. [2021-08-12 22:21:31,047 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 157 transitions. [2021-08-12 22:21:31,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:21:31,047 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 157 transitions. [2021-08-12 22:21:31,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 19.625) internal successors, (157), 8 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:31,047 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:31,048 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:31,048 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 482 predicate places. [2021-08-12 22:21:31,048 INFO L482 AbstractCegarLoop]: Abstraction has has 509 places, 1010 transitions, 143062 flow [2021-08-12 22:21:31,048 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:31,048 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:21:31,048 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:21:31,048 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-08-12 22:21:31,048 INFO L430 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:21:31,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:21:31,048 INFO L82 PathProgramCache]: Analyzing trace with hash 11971446, now seen corresponding path program 51 times [2021-08-12 22:21:31,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:21:31,049 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229459151] [2021-08-12 22:21:31,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:21:31,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:21:31,055 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:31,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:21:31,056 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:31,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-12 22:21:31,060 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:31,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:21:31,064 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:31,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:21:31,071 INFO L142 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size [2021-08-12 22:21:31,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:21:31,079 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:31,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 22:21:31,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:31,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:21:31,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:31,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:21:31,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:21:31,092 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:21:31,092 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229459151] [2021-08-12 22:21:31,092 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229459151] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:21:31,092 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:21:31,092 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-12 22:21:31,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350452845] [2021-08-12 22:21:31,092 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 22:21:31,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:21:31,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 22:21:31,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-12 22:21:31,093 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 28 [2021-08-12 22:21:31,093 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 509 places, 1010 transitions, 143062 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:31,093 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:21:31,093 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 28 [2021-08-12 22:21:31,093 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:21:32,911 INFO L129 PetriNetUnfolder]: 857/2486 cut-off events. [2021-08-12 22:21:32,911 INFO L130 PetriNetUnfolder]: For 209146/213018 co-relation queries the response was YES. [2021-08-12 22:21:32,920 INFO L84 FinitePrefix]: Finished finitePrefix Result has 113425 conditions, 2486 events. 857/2486 cut-off events. For 209146/213018 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 23644 event pairs, 0 based on Foata normal form. 2/1814 useless extension candidates. Maximal degree in co-relation 109284. Up to 1434 conditions per place. [2021-08-12 22:21:32,963 INFO L132 encePairwiseOnDemand]: 18/28 looper letters, 610 selfloop transitions, 175 changer transitions 214/1009 dead transitions. [2021-08-12 22:21:32,963 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 516 places, 1009 transitions, 144910 flow [2021-08-12 22:21:32,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 22:21:32,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-12 22:21:32,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2021-08-12 22:21:32,964 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7053571428571429 [2021-08-12 22:21:32,964 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 158 transitions. [2021-08-12 22:21:32,964 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 158 transitions. [2021-08-12 22:21:32,964 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:21:32,964 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 158 transitions. [2021-08-12 22:21:32,964 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 19.75) internal successors, (158), 8 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:32,965 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:32,965 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:32,965 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 489 predicate places. [2021-08-12 22:21:32,965 INFO L482 AbstractCegarLoop]: Abstraction has has 516 places, 1009 transitions, 144910 flow [2021-08-12 22:21:32,965 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:32,965 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:21:32,965 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:21:32,965 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-08-12 22:21:32,965 INFO L430 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:21:32,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:21:32,965 INFO L82 PathProgramCache]: Analyzing trace with hash 168798150, now seen corresponding path program 52 times [2021-08-12 22:21:32,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:21:32,965 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083641986] [2021-08-12 22:21:32,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:21:32,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:21:32,977 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:32,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:21:32,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:32,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-12 22:21:32,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:32,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:21:32,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:32,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:21:32,990 INFO L142 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size [2021-08-12 22:21:32,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:21:33,137 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:33,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:21:33,143 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:33,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:21:33,148 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:33,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:21:33,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:21:33,149 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:21:33,149 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083641986] [2021-08-12 22:21:33,149 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083641986] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:21:33,149 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:21:33,149 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-12 22:21:33,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779721703] [2021-08-12 22:21:33,149 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 22:21:33,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:21:33,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 22:21:33,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-12 22:21:33,150 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 28 [2021-08-12 22:21:33,150 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 516 places, 1009 transitions, 144910 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:33,150 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:21:33,150 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 28 [2021-08-12 22:21:33,150 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:21:34,595 INFO L129 PetriNetUnfolder]: 857/2495 cut-off events. [2021-08-12 22:21:34,595 INFO L130 PetriNetUnfolder]: For 211437/215433 co-relation queries the response was YES. [2021-08-12 22:21:34,602 INFO L84 FinitePrefix]: Finished finitePrefix Result has 114916 conditions, 2495 events. 857/2495 cut-off events. For 211437/215433 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 23841 event pairs, 0 based on Foata normal form. 2/1823 useless extension candidates. Maximal degree in co-relation 110803. Up to 1433 conditions per place. [2021-08-12 22:21:34,634 INFO L132 encePairwiseOnDemand]: 18/28 looper letters, 596 selfloop transitions, 187 changer transitions 215/1008 dead transitions. [2021-08-12 22:21:34,634 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 523 places, 1008 transitions, 146754 flow [2021-08-12 22:21:34,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 22:21:34,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-12 22:21:34,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 159 transitions. [2021-08-12 22:21:34,636 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7098214285714286 [2021-08-12 22:21:34,636 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 159 transitions. [2021-08-12 22:21:34,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 159 transitions. [2021-08-12 22:21:34,636 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:21:34,636 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 159 transitions. [2021-08-12 22:21:34,636 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 19.875) internal successors, (159), 8 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:34,637 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:34,637 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:34,637 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 496 predicate places. [2021-08-12 22:21:34,637 INFO L482 AbstractCegarLoop]: Abstraction has has 523 places, 1008 transitions, 146754 flow [2021-08-12 22:21:34,637 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:34,637 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:21:34,637 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:21:34,637 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-08-12 22:21:34,638 INFO L430 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:21:34,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:21:34,638 INFO L82 PathProgramCache]: Analyzing trace with hash -1151809300, now seen corresponding path program 53 times [2021-08-12 22:21:34,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:21:34,638 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009099257] [2021-08-12 22:21:34,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:21:34,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:21:34,648 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:34,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:21:34,648 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:34,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-12 22:21:34,651 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:34,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:21:34,656 INFO L142 QuantifierPusher]: treesize reduction 5, result has 61.5 percent of original size [2021-08-12 22:21:34,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-08-12 22:21:34,662 INFO L142 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size [2021-08-12 22:21:34,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:21:34,670 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:34,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:21:34,677 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:34,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:21:34,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:34,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:21:34,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:21:34,682 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:21:34,682 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009099257] [2021-08-12 22:21:34,682 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009099257] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:21:34,682 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:21:34,683 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-12 22:21:34,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470778291] [2021-08-12 22:21:34,683 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 22:21:34,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:21:34,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 22:21:34,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-08-12 22:21:34,683 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 28 [2021-08-12 22:21:34,683 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 523 places, 1008 transitions, 146754 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:34,684 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:21:34,684 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 28 [2021-08-12 22:21:34,684 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:21:36,107 INFO L129 PetriNetUnfolder]: 857/2491 cut-off events. [2021-08-12 22:21:36,107 INFO L130 PetriNetUnfolder]: For 237165/246252 co-relation queries the response was YES. [2021-08-12 22:21:36,115 INFO L84 FinitePrefix]: Finished finitePrefix Result has 116385 conditions, 2491 events. 857/2491 cut-off events. For 237165/246252 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 23718 event pairs, 0 based on Foata normal form. 11/1828 useless extension candidates. Maximal degree in co-relation 112302. Up to 1432 conditions per place. [2021-08-12 22:21:36,149 INFO L132 encePairwiseOnDemand]: 18/28 looper letters, 596 selfloop transitions, 185 changer transitions 216/1007 dead transitions. [2021-08-12 22:21:36,150 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 530 places, 1007 transitions, 148594 flow [2021-08-12 22:21:36,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 22:21:36,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-12 22:21:36,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2021-08-12 22:21:36,150 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7008928571428571 [2021-08-12 22:21:36,151 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 157 transitions. [2021-08-12 22:21:36,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 157 transitions. [2021-08-12 22:21:36,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:21:36,151 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 157 transitions. [2021-08-12 22:21:36,151 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 19.625) internal successors, (157), 8 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:36,151 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:36,152 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:36,152 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 503 predicate places. [2021-08-12 22:21:36,152 INFO L482 AbstractCegarLoop]: Abstraction has has 530 places, 1007 transitions, 148594 flow [2021-08-12 22:21:36,152 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:36,152 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:21:36,152 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:21:36,152 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-08-12 22:21:36,152 INFO L430 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:21:36,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:21:36,152 INFO L82 PathProgramCache]: Analyzing trace with hash -523258356, now seen corresponding path program 54 times [2021-08-12 22:21:36,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:21:36,152 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002477108] [2021-08-12 22:21:36,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:21:36,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:21:36,161 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:36,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:21:36,162 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:36,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-12 22:21:36,164 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:36,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:21:36,169 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:36,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:21:36,176 INFO L142 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size [2021-08-12 22:21:36,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:21:36,184 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:36,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:21:36,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:36,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:21:36,196 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:36,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:21:36,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:21:36,197 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:21:36,197 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002477108] [2021-08-12 22:21:36,197 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002477108] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:21:36,197 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:21:36,197 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-12 22:21:36,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675082255] [2021-08-12 22:21:36,198 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 22:21:36,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:21:36,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 22:21:36,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-08-12 22:21:36,198 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 28 [2021-08-12 22:21:36,198 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 530 places, 1007 transitions, 148594 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:36,198 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:21:36,198 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 28 [2021-08-12 22:21:36,199 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:21:38,017 INFO L129 PetriNetUnfolder]: 857/2496 cut-off events. [2021-08-12 22:21:38,017 INFO L130 PetriNetUnfolder]: For 188012/188893 co-relation queries the response was YES. [2021-08-12 22:21:38,026 INFO L84 FinitePrefix]: Finished finitePrefix Result has 117864 conditions, 2496 events. 857/2496 cut-off events. For 188012/188893 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 23905 event pairs, 0 based on Foata normal form. 2/1824 useless extension candidates. Maximal degree in co-relation 113813. Up to 1431 conditions per place. [2021-08-12 22:21:38,079 INFO L132 encePairwiseOnDemand]: 18/28 looper letters, 606 selfloop transitions, 173 changer transitions 217/1006 dead transitions. [2021-08-12 22:21:38,079 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 537 places, 1006 transitions, 150430 flow [2021-08-12 22:21:38,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 22:21:38,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-12 22:21:38,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2021-08-12 22:21:38,080 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7053571428571429 [2021-08-12 22:21:38,080 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 158 transitions. [2021-08-12 22:21:38,080 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 158 transitions. [2021-08-12 22:21:38,080 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:21:38,081 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 158 transitions. [2021-08-12 22:21:38,081 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 19.75) internal successors, (158), 8 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:38,081 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:38,081 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:38,081 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 510 predicate places. [2021-08-12 22:21:38,082 INFO L482 AbstractCegarLoop]: Abstraction has has 537 places, 1006 transitions, 150430 flow [2021-08-12 22:21:38,082 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:38,082 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:21:38,082 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:21:38,082 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-08-12 22:21:38,082 INFO L430 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:21:38,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:21:38,082 INFO L82 PathProgramCache]: Analyzing trace with hash 226777864, now seen corresponding path program 55 times [2021-08-12 22:21:38,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:21:38,082 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977582906] [2021-08-12 22:21:38,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:21:38,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:21:38,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:38,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:21:38,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:38,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-12 22:21:38,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:38,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:21:38,098 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:38,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:21:38,105 INFO L142 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size [2021-08-12 22:21:38,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:21:38,118 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:38,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:21:38,128 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:38,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:21:38,133 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:38,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:21:38,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:21:38,134 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:21:38,134 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977582906] [2021-08-12 22:21:38,134 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977582906] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:21:38,134 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:21:38,134 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-12 22:21:38,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900950862] [2021-08-12 22:21:38,135 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 22:21:38,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:21:38,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 22:21:38,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-08-12 22:21:38,135 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 28 [2021-08-12 22:21:38,135 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 537 places, 1006 transitions, 150430 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:38,135 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:21:38,135 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 28 [2021-08-12 22:21:38,135 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:21:40,345 INFO L129 PetriNetUnfolder]: 856/2499 cut-off events. [2021-08-12 22:21:40,345 INFO L130 PetriNetUnfolder]: For 249677/259232 co-relation queries the response was YES. [2021-08-12 22:21:40,352 INFO L84 FinitePrefix]: Finished finitePrefix Result has 119636 conditions, 2499 events. 856/2499 cut-off events. For 249677/259232 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 23916 event pairs, 0 based on Foata normal form. 11/1835 useless extension candidates. Maximal degree in co-relation 115453. Up to 1434 conditions per place. [2021-08-12 22:21:40,387 INFO L132 encePairwiseOnDemand]: 18/28 looper letters, 593 selfloop transitions, 188 changer transitions 218/1009 dead transitions. [2021-08-12 22:21:40,387 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 544 places, 1009 transitions, 152878 flow [2021-08-12 22:21:40,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 22:21:40,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-12 22:21:40,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 159 transitions. [2021-08-12 22:21:40,388 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7098214285714286 [2021-08-12 22:21:40,388 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 159 transitions. [2021-08-12 22:21:40,388 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 159 transitions. [2021-08-12 22:21:40,388 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:21:40,388 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 159 transitions. [2021-08-12 22:21:40,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 19.875) internal successors, (159), 8 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:40,389 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:40,389 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:40,389 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 517 predicate places. [2021-08-12 22:21:40,389 INFO L482 AbstractCegarLoop]: Abstraction has has 544 places, 1009 transitions, 152878 flow [2021-08-12 22:21:40,389 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:40,389 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:21:40,389 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:21:40,389 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-08-12 22:21:40,389 INFO L430 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:21:40,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:21:40,390 INFO L82 PathProgramCache]: Analyzing trace with hash -529828452, now seen corresponding path program 56 times [2021-08-12 22:21:40,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:21:40,390 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339240696] [2021-08-12 22:21:40,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:21:40,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:21:40,401 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:40,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:21:40,402 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:40,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-12 22:21:40,405 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:40,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:21:40,409 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:40,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:21:40,416 INFO L142 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size [2021-08-12 22:21:40,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:21:40,424 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:40,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:21:40,432 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:40,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:21:40,437 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:40,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:21:40,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:21:40,438 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:21:40,438 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339240696] [2021-08-12 22:21:40,438 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339240696] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:21:40,438 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:21:40,438 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-12 22:21:40,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218892127] [2021-08-12 22:21:40,438 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 22:21:40,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:21:40,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 22:21:40,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-08-12 22:21:40,439 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 28 [2021-08-12 22:21:40,439 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 544 places, 1009 transitions, 152878 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:40,439 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:21:40,439 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 28 [2021-08-12 22:21:40,439 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:21:41,926 INFO L129 PetriNetUnfolder]: 856/2488 cut-off events. [2021-08-12 22:21:41,926 INFO L130 PetriNetUnfolder]: For 228189/232681 co-relation queries the response was YES. [2021-08-12 22:21:41,936 INFO L84 FinitePrefix]: Finished finitePrefix Result has 121089 conditions, 2488 events. 856/2488 cut-off events. For 228189/232681 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 23771 event pairs, 0 based on Foata normal form. 2/1815 useless extension candidates. Maximal degree in co-relation 116940. Up to 1433 conditions per place. [2021-08-12 22:21:42,127 INFO L132 encePairwiseOnDemand]: 18/28 looper letters, 604 selfloop transitions, 175 changer transitions 219/1008 dead transitions. [2021-08-12 22:21:42,127 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 551 places, 1008 transitions, 154714 flow [2021-08-12 22:21:42,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 22:21:42,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-12 22:21:42,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2021-08-12 22:21:42,149 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7008928571428571 [2021-08-12 22:21:42,149 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 157 transitions. [2021-08-12 22:21:42,149 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 157 transitions. [2021-08-12 22:21:42,149 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:21:42,149 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 157 transitions. [2021-08-12 22:21:42,149 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 19.625) internal successors, (157), 8 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:42,150 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:42,150 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:42,150 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 524 predicate places. [2021-08-12 22:21:42,150 INFO L482 AbstractCegarLoop]: Abstraction has has 551 places, 1008 transitions, 154714 flow [2021-08-12 22:21:42,150 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:42,150 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:21:42,150 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:21:42,150 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-08-12 22:21:42,150 INFO L430 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:21:42,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:21:42,151 INFO L82 PathProgramCache]: Analyzing trace with hash 264857272, now seen corresponding path program 57 times [2021-08-12 22:21:42,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:21:42,151 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760623416] [2021-08-12 22:21:42,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:21:42,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:21:42,157 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:42,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:21:42,158 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:42,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-12 22:21:42,160 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:42,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:21:42,166 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:42,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:21:42,174 INFO L142 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size [2021-08-12 22:21:42,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:21:42,182 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:42,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:21:42,190 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:42,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:21:42,195 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:42,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:21:42,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:21:42,196 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:21:42,196 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760623416] [2021-08-12 22:21:42,196 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760623416] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:21:42,196 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:21:42,196 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-12 22:21:42,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547627991] [2021-08-12 22:21:42,196 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 22:21:42,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:21:42,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 22:21:42,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-12 22:21:42,197 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 28 [2021-08-12 22:21:42,197 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 551 places, 1008 transitions, 154714 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:42,197 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:21:42,197 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 28 [2021-08-12 22:21:42,197 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:21:43,798 INFO L129 PetriNetUnfolder]: 856/2498 cut-off events. [2021-08-12 22:21:43,799 INFO L130 PetriNetUnfolder]: For 230542/235158 co-relation queries the response was YES. [2021-08-12 22:21:43,806 INFO L84 FinitePrefix]: Finished finitePrefix Result has 122575 conditions, 2498 events. 856/2498 cut-off events. For 230542/235158 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 23970 event pairs, 0 based on Foata normal form. 2/1825 useless extension candidates. Maximal degree in co-relation 118462. Up to 1432 conditions per place. [2021-08-12 22:21:43,840 INFO L132 encePairwiseOnDemand]: 18/28 looper letters, 590 selfloop transitions, 187 changer transitions 220/1007 dead transitions. [2021-08-12 22:21:43,841 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 558 places, 1007 transitions, 156546 flow [2021-08-12 22:21:43,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 22:21:43,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-12 22:21:43,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 159 transitions. [2021-08-12 22:21:43,841 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7098214285714286 [2021-08-12 22:21:43,841 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 159 transitions. [2021-08-12 22:21:43,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 159 transitions. [2021-08-12 22:21:43,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:21:43,842 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 159 transitions. [2021-08-12 22:21:43,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 19.875) internal successors, (159), 8 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:43,842 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:43,842 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:43,842 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 531 predicate places. [2021-08-12 22:21:43,842 INFO L482 AbstractCegarLoop]: Abstraction has has 558 places, 1007 transitions, 156546 flow [2021-08-12 22:21:43,842 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:43,842 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:21:43,842 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:21:43,842 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-08-12 22:21:43,842 INFO L430 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:21:43,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:21:43,843 INFO L82 PathProgramCache]: Analyzing trace with hash 394116934, now seen corresponding path program 58 times [2021-08-12 22:21:43,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:21:43,843 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620137752] [2021-08-12 22:21:43,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:21:43,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:21:43,860 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:43,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:21:43,861 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:43,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-12 22:21:43,864 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:43,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:21:43,868 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:43,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:21:43,875 INFO L142 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size [2021-08-12 22:21:43,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:21:43,883 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:43,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 22:21:43,890 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:43,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:21:43,896 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:43,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:21:43,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:21:43,897 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:21:43,897 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620137752] [2021-08-12 22:21:43,897 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620137752] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:21:43,897 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:21:43,897 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-12 22:21:43,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548329570] [2021-08-12 22:21:43,898 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 22:21:43,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:21:43,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 22:21:43,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-12 22:21:43,898 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 28 [2021-08-12 22:21:43,898 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 558 places, 1007 transitions, 156546 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:43,898 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:21:43,898 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 28 [2021-08-12 22:21:43,898 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:21:45,612 INFO L129 PetriNetUnfolder]: 856/2485 cut-off events. [2021-08-12 22:21:45,612 INFO L130 PetriNetUnfolder]: For 258996/269253 co-relation queries the response was YES. [2021-08-12 22:21:45,619 INFO L84 FinitePrefix]: Finished finitePrefix Result has 124024 conditions, 2485 events. 856/2485 cut-off events. For 258996/269253 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 23706 event pairs, 0 based on Foata normal form. 11/1821 useless extension candidates. Maximal degree in co-relation 119949. Up to 1431 conditions per place. [2021-08-12 22:21:45,880 INFO L132 encePairwiseOnDemand]: 18/28 looper letters, 590 selfloop transitions, 185 changer transitions 221/1006 dead transitions. [2021-08-12 22:21:45,880 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 565 places, 1006 transitions, 158374 flow [2021-08-12 22:21:45,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 22:21:45,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-12 22:21:45,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2021-08-12 22:21:45,881 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7053571428571429 [2021-08-12 22:21:45,881 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 158 transitions. [2021-08-12 22:21:45,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 158 transitions. [2021-08-12 22:21:45,881 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:21:45,881 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 158 transitions. [2021-08-12 22:21:45,881 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 19.75) internal successors, (158), 8 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:45,882 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:45,882 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:45,882 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 538 predicate places. [2021-08-12 22:21:45,882 INFO L482 AbstractCegarLoop]: Abstraction has has 565 places, 1006 transitions, 158374 flow [2021-08-12 22:21:45,882 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:45,882 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:21:45,882 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:21:45,882 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-08-12 22:21:45,882 INFO L430 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:21:45,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:21:45,883 INFO L82 PathProgramCache]: Analyzing trace with hash 120998322, now seen corresponding path program 59 times [2021-08-12 22:21:45,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:21:45,883 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312274617] [2021-08-12 22:21:45,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:21:45,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:21:45,890 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:45,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:21:45,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:45,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-12 22:21:45,893 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:45,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:21:45,898 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:45,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:21:45,906 INFO L142 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size [2021-08-12 22:21:45,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:21:45,915 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:45,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:21:45,922 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:45,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:21:45,928 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:45,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:21:45,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:21:45,928 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:21:45,928 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312274617] [2021-08-12 22:21:45,929 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312274617] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:21:45,929 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:21:45,929 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-12 22:21:45,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444463078] [2021-08-12 22:21:45,929 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 22:21:45,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:21:45,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 22:21:45,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-08-12 22:21:45,930 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 28 [2021-08-12 22:21:45,930 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 565 places, 1006 transitions, 158374 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:45,930 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:21:45,930 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 28 [2021-08-12 22:21:45,930 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:21:47,582 INFO L129 PetriNetUnfolder]: 856/2501 cut-off events. [2021-08-12 22:21:47,582 INFO L130 PetriNetUnfolder]: For 262513/273004 co-relation queries the response was YES. [2021-08-12 22:21:47,590 INFO L84 FinitePrefix]: Finished finitePrefix Result has 125516 conditions, 2501 events. 856/2501 cut-off events. For 262513/273004 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 23984 event pairs, 0 based on Foata normal form. 11/1837 useless extension candidates. Maximal degree in co-relation 121481. Up to 1430 conditions per place. [2021-08-12 22:21:47,635 INFO L132 encePairwiseOnDemand]: 18/28 looper letters, 586 selfloop transitions, 187 changer transitions 222/1005 dead transitions. [2021-08-12 22:21:47,636 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 572 places, 1005 transitions, 160198 flow [2021-08-12 22:21:47,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 22:21:47,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-12 22:21:47,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2021-08-12 22:21:47,636 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7053571428571429 [2021-08-12 22:21:47,636 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 158 transitions. [2021-08-12 22:21:47,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 158 transitions. [2021-08-12 22:21:47,637 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:21:47,637 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 158 transitions. [2021-08-12 22:21:47,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 19.75) internal successors, (158), 8 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:47,637 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:47,637 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:47,637 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 545 predicate places. [2021-08-12 22:21:47,637 INFO L482 AbstractCegarLoop]: Abstraction has has 572 places, 1005 transitions, 160198 flow [2021-08-12 22:21:47,637 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:47,637 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:21:47,637 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:21:47,638 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-08-12 22:21:47,638 INFO L430 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:21:47,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:21:47,638 INFO L82 PathProgramCache]: Analyzing trace with hash 768577762, now seen corresponding path program 60 times [2021-08-12 22:21:47,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:21:47,638 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194030454] [2021-08-12 22:21:47,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:21:47,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:21:47,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:47,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:21:47,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:47,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-12 22:21:47,648 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:47,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:21:47,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:47,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:21:47,662 INFO L142 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size [2021-08-12 22:21:47,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:21:47,670 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:47,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 22:21:47,676 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:47,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:21:47,681 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:47,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:21:47,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:21:47,682 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:21:47,682 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194030454] [2021-08-12 22:21:47,682 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194030454] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:21:47,682 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:21:47,682 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-12 22:21:47,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775072229] [2021-08-12 22:21:47,682 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 22:21:47,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:21:47,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 22:21:47,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-08-12 22:21:47,683 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 28 [2021-08-12 22:21:47,683 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 572 places, 1005 transitions, 160198 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:47,683 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:21:47,683 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 28 [2021-08-12 22:21:47,683 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:21:49,268 INFO L129 PetriNetUnfolder]: 856/2498 cut-off events. [2021-08-12 22:21:49,268 INFO L130 PetriNetUnfolder]: For 266310/277035 co-relation queries the response was YES. [2021-08-12 22:21:49,276 INFO L84 FinitePrefix]: Finished finitePrefix Result has 126975 conditions, 2498 events. 856/2498 cut-off events. For 266310/277035 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 23875 event pairs, 0 based on Foata normal form. 11/1834 useless extension candidates. Maximal degree in co-relation 122982. Up to 1429 conditions per place. [2021-08-12 22:21:49,463 INFO L132 encePairwiseOnDemand]: 18/28 looper letters, 585 selfloop transitions, 186 changer transitions 223/1004 dead transitions. [2021-08-12 22:21:49,463 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 579 places, 1004 transitions, 162018 flow [2021-08-12 22:21:49,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 22:21:49,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-12 22:21:49,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2021-08-12 22:21:49,465 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7008928571428571 [2021-08-12 22:21:49,465 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 157 transitions. [2021-08-12 22:21:49,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 157 transitions. [2021-08-12 22:21:49,467 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:21:49,467 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 157 transitions. [2021-08-12 22:21:49,467 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 19.625) internal successors, (157), 8 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:49,468 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:49,468 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:49,468 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 552 predicate places. [2021-08-12 22:21:49,468 INFO L482 AbstractCegarLoop]: Abstraction has has 579 places, 1004 transitions, 162018 flow [2021-08-12 22:21:49,468 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:49,468 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:21:49,468 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:21:49,468 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-08-12 22:21:49,468 INFO L430 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:21:49,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:21:49,469 INFO L82 PathProgramCache]: Analyzing trace with hash 750201044, now seen corresponding path program 61 times [2021-08-12 22:21:49,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:21:49,469 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747522987] [2021-08-12 22:21:49,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:21:49,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:21:49,476 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:49,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:21:49,476 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:49,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-12 22:21:49,479 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:49,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:21:49,484 INFO L142 QuantifierPusher]: treesize reduction 5, result has 61.5 percent of original size [2021-08-12 22:21:49,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-08-12 22:21:49,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:49,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:21:49,495 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:49,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:21:49,502 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:49,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:21:49,507 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:49,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:21:49,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:21:49,508 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:21:49,508 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747522987] [2021-08-12 22:21:49,508 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747522987] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:21:49,508 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:21:49,508 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-12 22:21:49,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418694907] [2021-08-12 22:21:49,508 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 22:21:49,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:21:49,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 22:21:49,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-12 22:21:49,509 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 28 [2021-08-12 22:21:49,509 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 579 places, 1004 transitions, 162018 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:49,509 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:21:49,509 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 28 [2021-08-12 22:21:49,509 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:21:51,513 INFO L129 PetriNetUnfolder]: 936/2973 cut-off events. [2021-08-12 22:21:51,513 INFO L130 PetriNetUnfolder]: For 377923/383035 co-relation queries the response was YES. [2021-08-12 22:21:51,521 INFO L84 FinitePrefix]: Finished finitePrefix Result has 149619 conditions, 2973 events. 936/2973 cut-off events. For 377923/383035 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 30471 event pairs, 0 based on Foata normal form. 2/2198 useless extension candidates. Maximal degree in co-relation 142276. Up to 1676 conditions per place. [2021-08-12 22:21:51,564 INFO L132 encePairwiseOnDemand]: 18/28 looper letters, 709 selfloop transitions, 213 changer transitions 230/1162 dead transitions. [2021-08-12 22:21:51,564 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 586 places, 1162 transitions, 190374 flow [2021-08-12 22:21:51,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 22:21:51,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-12 22:21:51,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2021-08-12 22:21:51,565 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.6964285714285714 [2021-08-12 22:21:51,565 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 156 transitions. [2021-08-12 22:21:51,565 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 156 transitions. [2021-08-12 22:21:51,565 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:21:51,565 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 156 transitions. [2021-08-12 22:21:51,566 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 19.5) internal successors, (156), 8 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:51,566 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:51,566 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:51,566 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 559 predicate places. [2021-08-12 22:21:51,566 INFO L482 AbstractCegarLoop]: Abstraction has has 586 places, 1162 transitions, 190374 flow [2021-08-12 22:21:51,566 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:51,566 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:21:51,566 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:21:51,566 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-08-12 22:21:51,566 INFO L430 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:21:51,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:21:51,567 INFO L82 PathProgramCache]: Analyzing trace with hash 913557886, now seen corresponding path program 62 times [2021-08-12 22:21:51,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:21:51,567 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654070503] [2021-08-12 22:21:51,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:21:51,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:21:51,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:51,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:21:51,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:51,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-12 22:21:51,577 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:51,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:21:51,581 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:51,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:21:51,588 INFO L142 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size [2021-08-12 22:21:51,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:21:51,597 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:51,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:21:51,604 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:51,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:21:51,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:51,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:21:51,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:21:51,610 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:21:51,610 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654070503] [2021-08-12 22:21:51,610 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654070503] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:21:51,611 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:21:51,611 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-12 22:21:51,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601233867] [2021-08-12 22:21:51,611 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 22:21:51,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:21:51,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 22:21:51,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-08-12 22:21:51,611 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 28 [2021-08-12 22:21:51,612 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 586 places, 1162 transitions, 190374 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:51,612 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:21:51,612 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 28 [2021-08-12 22:21:51,612 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:21:54,031 INFO L129 PetriNetUnfolder]: 934/3008 cut-off events. [2021-08-12 22:21:54,031 INFO L130 PetriNetUnfolder]: For 393839/399075 co-relation queries the response was YES. [2021-08-12 22:21:54,039 INFO L84 FinitePrefix]: Finished finitePrefix Result has 151805 conditions, 3008 events. 934/3008 cut-off events. For 393839/399075 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 31185 event pairs, 0 based on Foata normal form. 2/2235 useless extension candidates. Maximal degree in co-relation 144200. Up to 1680 conditions per place. [2021-08-12 22:21:54,082 INFO L132 encePairwiseOnDemand]: 18/28 looper letters, 720 selfloop transitions, 205 changer transitions 231/1166 dead transitions. [2021-08-12 22:21:54,082 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 593 places, 1166 transitions, 193350 flow [2021-08-12 22:21:54,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 22:21:54,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-12 22:21:54,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 159 transitions. [2021-08-12 22:21:54,083 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7098214285714286 [2021-08-12 22:21:54,083 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 159 transitions. [2021-08-12 22:21:54,083 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 159 transitions. [2021-08-12 22:21:54,083 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:21:54,083 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 159 transitions. [2021-08-12 22:21:54,083 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 19.875) internal successors, (159), 8 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:54,083 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:54,084 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:54,084 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 566 predicate places. [2021-08-12 22:21:54,084 INFO L482 AbstractCegarLoop]: Abstraction has has 593 places, 1166 transitions, 193350 flow [2021-08-12 22:21:54,084 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:54,084 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:21:54,084 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:21:54,084 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-08-12 22:21:54,084 INFO L430 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:21:54,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:21:54,084 INFO L82 PathProgramCache]: Analyzing trace with hash 972815534, now seen corresponding path program 63 times [2021-08-12 22:21:54,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:21:54,085 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357617420] [2021-08-12 22:21:54,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:21:54,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:21:54,093 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:54,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:21:54,093 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:54,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-12 22:21:54,096 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:54,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-08-12 22:21:54,100 INFO L142 QuantifierPusher]: treesize reduction 3, result has 72.7 percent of original size [2021-08-12 22:21:54,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-08-12 22:21:54,106 INFO L142 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size [2021-08-12 22:21:54,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:21:54,115 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:54,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:21:54,123 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:54,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:21:54,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:54,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:21:54,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:21:54,129 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:21:54,130 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357617420] [2021-08-12 22:21:54,130 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357617420] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:21:54,130 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:21:54,130 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-12 22:21:54,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040204166] [2021-08-12 22:21:54,130 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 22:21:54,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:21:54,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 22:21:54,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-12 22:21:54,130 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 28 [2021-08-12 22:21:54,130 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 593 places, 1166 transitions, 193350 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:54,131 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:21:54,131 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 28 [2021-08-12 22:21:54,131 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:21:56,753 INFO L129 PetriNetUnfolder]: 934/3015 cut-off events. [2021-08-12 22:21:56,753 INFO L130 PetriNetUnfolder]: For 360382/361479 co-relation queries the response was YES. [2021-08-12 22:21:56,761 INFO L84 FinitePrefix]: Finished finitePrefix Result has 153537 conditions, 3015 events. 934/3015 cut-off events. For 360382/361479 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 31317 event pairs, 0 based on Foata normal form. 2/2242 useless extension candidates. Maximal degree in co-relation 145939. Up to 1679 conditions per place. [2021-08-12 22:21:56,804 INFO L132 encePairwiseOnDemand]: 18/28 looper letters, 729 selfloop transitions, 212 changer transitions 232/1183 dead transitions. [2021-08-12 22:21:56,805 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 600 places, 1183 transitions, 198438 flow [2021-08-12 22:21:56,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 22:21:56,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-12 22:21:56,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 159 transitions. [2021-08-12 22:21:56,805 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7098214285714286 [2021-08-12 22:21:56,805 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 159 transitions. [2021-08-12 22:21:56,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 159 transitions. [2021-08-12 22:21:56,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:21:56,806 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 159 transitions. [2021-08-12 22:21:56,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 19.875) internal successors, (159), 8 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:56,806 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:56,806 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:56,806 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 573 predicate places. [2021-08-12 22:21:56,806 INFO L482 AbstractCegarLoop]: Abstraction has has 600 places, 1183 transitions, 198438 flow [2021-08-12 22:21:56,806 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:56,806 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:21:56,806 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:21:56,807 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-08-12 22:21:56,807 INFO L430 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:21:56,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:21:56,807 INFO L82 PathProgramCache]: Analyzing trace with hash -1804248004, now seen corresponding path program 64 times [2021-08-12 22:21:56,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:21:56,807 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075802021] [2021-08-12 22:21:56,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:21:56,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:21:56,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:56,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:21:56,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:56,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-12 22:21:56,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:56,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-08-12 22:21:56,819 INFO L142 QuantifierPusher]: treesize reduction 3, result has 72.7 percent of original size [2021-08-12 22:21:56,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-08-12 22:21:56,826 INFO L142 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size [2021-08-12 22:21:56,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:21:56,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:56,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:21:56,851 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:56,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:21:56,858 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:56,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:21:56,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:21:56,858 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:21:56,858 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075802021] [2021-08-12 22:21:56,858 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075802021] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:21:56,858 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:21:56,859 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-12 22:21:56,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069807743] [2021-08-12 22:21:56,859 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 22:21:56,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:21:56,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 22:21:56,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-12 22:21:56,859 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 28 [2021-08-12 22:21:56,859 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 600 places, 1183 transitions, 198438 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:56,859 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:21:56,859 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 28 [2021-08-12 22:21:56,859 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:21:59,274 INFO L129 PetriNetUnfolder]: 934/3007 cut-off events. [2021-08-12 22:21:59,274 INFO L130 PetriNetUnfolder]: For 404768/410252 co-relation queries the response was YES. [2021-08-12 22:21:59,282 INFO L84 FinitePrefix]: Finished finitePrefix Result has 155233 conditions, 3007 events. 934/3007 cut-off events. For 404768/410252 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 31215 event pairs, 0 based on Foata normal form. 2/2233 useless extension candidates. Maximal degree in co-relation 147644. Up to 1678 conditions per place. [2021-08-12 22:21:59,325 INFO L132 encePairwiseOnDemand]: 18/28 looper letters, 727 selfloop transitions, 212 changer transitions 233/1182 dead transitions. [2021-08-12 22:21:59,326 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 607 places, 1182 transitions, 200606 flow [2021-08-12 22:21:59,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 22:21:59,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-12 22:21:59,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2021-08-12 22:21:59,326 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7053571428571429 [2021-08-12 22:21:59,326 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 158 transitions. [2021-08-12 22:21:59,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 158 transitions. [2021-08-12 22:21:59,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:21:59,327 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 158 transitions. [2021-08-12 22:21:59,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 19.75) internal successors, (158), 8 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:59,327 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:59,327 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:59,327 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 580 predicate places. [2021-08-12 22:21:59,327 INFO L482 AbstractCegarLoop]: Abstraction has has 607 places, 1182 transitions, 200606 flow [2021-08-12 22:21:59,327 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:59,327 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:21:59,327 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:21:59,327 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2021-08-12 22:21:59,328 INFO L430 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:21:59,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:21:59,328 INFO L82 PathProgramCache]: Analyzing trace with hash -152226636, now seen corresponding path program 65 times [2021-08-12 22:21:59,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:21:59,328 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785230447] [2021-08-12 22:21:59,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:21:59,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:21:59,342 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:59,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:21:59,343 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:59,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-12 22:21:59,345 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:59,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-08-12 22:21:59,349 INFO L142 QuantifierPusher]: treesize reduction 3, result has 72.7 percent of original size [2021-08-12 22:21:59,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-08-12 22:21:59,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:59,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:21:59,360 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:59,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:21:59,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:59,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:21:59,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:21:59,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:21:59,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:21:59,375 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:21:59,375 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785230447] [2021-08-12 22:21:59,376 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785230447] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:21:59,376 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:21:59,376 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-12 22:21:59,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833421273] [2021-08-12 22:21:59,376 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 22:21:59,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:21:59,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 22:21:59,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-08-12 22:21:59,377 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 28 [2021-08-12 22:21:59,377 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 607 places, 1182 transitions, 200606 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:21:59,377 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:21:59,377 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 28 [2021-08-12 22:21:59,377 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:22:01,965 INFO L129 PetriNetUnfolder]: 934/3017 cut-off events. [2021-08-12 22:22:01,967 INFO L130 PetriNetUnfolder]: For 369102/370247 co-relation queries the response was YES. [2021-08-12 22:22:01,974 INFO L84 FinitePrefix]: Finished finitePrefix Result has 156963 conditions, 3017 events. 934/3017 cut-off events. For 369102/370247 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 31383 event pairs, 0 based on Foata normal form. 2/2246 useless extension candidates. Maximal degree in co-relation 149385. Up to 1677 conditions per place. [2021-08-12 22:22:02,018 INFO L132 encePairwiseOnDemand]: 18/28 looper letters, 723 selfloop transitions, 214 changer transitions 234/1181 dead transitions. [2021-08-12 22:22:02,019 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 614 places, 1181 transitions, 202770 flow [2021-08-12 22:22:02,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 22:22:02,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-12 22:22:02,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2021-08-12 22:22:02,019 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.6964285714285714 [2021-08-12 22:22:02,019 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 156 transitions. [2021-08-12 22:22:02,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 156 transitions. [2021-08-12 22:22:02,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:22:02,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 156 transitions. [2021-08-12 22:22:02,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 19.5) internal successors, (156), 8 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:02,020 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:02,020 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:02,020 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 587 predicate places. [2021-08-12 22:22:02,020 INFO L482 AbstractCegarLoop]: Abstraction has has 614 places, 1181 transitions, 202770 flow [2021-08-12 22:22:02,020 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:02,020 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:22:02,020 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:22:02,020 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2021-08-12 22:22:02,021 INFO L430 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:22:02,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:22:02,021 INFO L82 PathProgramCache]: Analyzing trace with hash 10915648, now seen corresponding path program 66 times [2021-08-12 22:22:02,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:22:02,021 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573951477] [2021-08-12 22:22:02,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:22:02,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:22:02,027 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:02,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:22:02,027 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:02,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-12 22:22:02,030 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:02,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-08-12 22:22:02,033 INFO L142 QuantifierPusher]: treesize reduction 3, result has 72.7 percent of original size [2021-08-12 22:22:02,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-08-12 22:22:02,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:02,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:22:02,045 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:02,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:22:02,052 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:02,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:22:02,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:02,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:22:02,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:22:02,058 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:22:02,058 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573951477] [2021-08-12 22:22:02,058 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573951477] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:22:02,058 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:22:02,058 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-12 22:22:02,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561074967] [2021-08-12 22:22:02,058 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 22:22:02,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:22:02,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 22:22:02,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-08-12 22:22:02,059 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 28 [2021-08-12 22:22:02,059 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 614 places, 1181 transitions, 202770 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:02,059 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:22:02,059 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 28 [2021-08-12 22:22:02,059 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:22:04,390 INFO L129 PetriNetUnfolder]: 934/2998 cut-off events. [2021-08-12 22:22:04,391 INFO L130 PetriNetUnfolder]: For 450893/463652 co-relation queries the response was YES. [2021-08-12 22:22:04,399 INFO L84 FinitePrefix]: Finished finitePrefix Result has 158639 conditions, 2998 events. 934/2998 cut-off events. For 450893/463652 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 30991 event pairs, 0 based on Foata normal form. 3/2225 useless extension candidates. Maximal degree in co-relation 151074. Up to 1676 conditions per place. [2021-08-12 22:22:04,595 INFO L132 encePairwiseOnDemand]: 18/28 looper letters, 736 selfloop transitions, 217 changer transitions 235/1198 dead transitions. [2021-08-12 22:22:04,596 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 621 places, 1198 transitions, 207990 flow [2021-08-12 22:22:04,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 22:22:04,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-12 22:22:04,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2021-08-12 22:22:04,596 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.6964285714285714 [2021-08-12 22:22:04,596 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 156 transitions. [2021-08-12 22:22:04,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 156 transitions. [2021-08-12 22:22:04,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:22:04,597 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 156 transitions. [2021-08-12 22:22:04,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 19.5) internal successors, (156), 8 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:04,597 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:04,597 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:04,597 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 594 predicate places. [2021-08-12 22:22:04,597 INFO L482 AbstractCegarLoop]: Abstraction has has 621 places, 1198 transitions, 207990 flow [2021-08-12 22:22:04,597 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:04,597 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:22:04,597 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:22:04,598 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2021-08-12 22:22:04,598 INFO L430 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:22:04,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:22:04,598 INFO L82 PathProgramCache]: Analyzing trace with hash 2081957030, now seen corresponding path program 67 times [2021-08-12 22:22:04,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:22:04,598 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298347638] [2021-08-12 22:22:04,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:22:04,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:22:04,606 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:04,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:22:04,606 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:04,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-12 22:22:04,609 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:04,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-08-12 22:22:04,613 INFO L142 QuantifierPusher]: treesize reduction 3, result has 72.7 percent of original size [2021-08-12 22:22:04,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-08-12 22:22:04,618 INFO L142 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size [2021-08-12 22:22:04,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:22:04,625 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:04,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:22:04,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:04,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:22:04,639 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:04,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:22:04,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:22:04,639 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:22:04,639 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298347638] [2021-08-12 22:22:04,639 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298347638] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:22:04,639 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:22:04,639 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-12 22:22:04,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737833574] [2021-08-12 22:22:04,640 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 22:22:04,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:22:04,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 22:22:04,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-12 22:22:04,640 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 28 [2021-08-12 22:22:04,640 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 621 places, 1198 transitions, 207990 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:04,640 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:22:04,640 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 28 [2021-08-12 22:22:04,641 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:22:07,004 INFO L129 PetriNetUnfolder]: 934/2967 cut-off events. [2021-08-12 22:22:07,005 INFO L130 PetriNetUnfolder]: For 376501/377694 co-relation queries the response was YES. [2021-08-12 22:22:07,013 INFO L84 FinitePrefix]: Finished finitePrefix Result has 160289 conditions, 2967 events. 934/2967 cut-off events. For 376501/377694 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 30540 event pairs, 0 based on Foata normal form. 2/2191 useless extension candidates. Maximal degree in co-relation 152739. Up to 1675 conditions per place. [2021-08-12 22:22:07,058 INFO L132 encePairwiseOnDemand]: 18/28 looper letters, 738 selfloop transitions, 213 changer transitions 236/1197 dead transitions. [2021-08-12 22:22:07,058 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 628 places, 1197 transitions, 210182 flow [2021-08-12 22:22:07,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 22:22:07,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-12 22:22:07,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2021-08-12 22:22:07,059 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7053571428571429 [2021-08-12 22:22:07,059 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 158 transitions. [2021-08-12 22:22:07,059 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 158 transitions. [2021-08-12 22:22:07,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:22:07,059 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 158 transitions. [2021-08-12 22:22:07,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 19.75) internal successors, (158), 8 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:07,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:07,060 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:07,060 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 601 predicate places. [2021-08-12 22:22:07,060 INFO L482 AbstractCegarLoop]: Abstraction has has 628 places, 1197 transitions, 210182 flow [2021-08-12 22:22:07,060 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:07,060 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:22:07,060 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:22:07,060 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2021-08-12 22:22:07,060 INFO L430 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:22:07,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:22:07,061 INFO L82 PathProgramCache]: Analyzing trace with hash 1441658862, now seen corresponding path program 68 times [2021-08-12 22:22:07,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:22:07,061 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698349639] [2021-08-12 22:22:07,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:22:07,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:22:07,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:07,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:22:07,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:07,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-12 22:22:07,073 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:07,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:22:07,077 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:07,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:22:07,084 INFO L142 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size [2021-08-12 22:22:07,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:22:07,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:07,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 22:22:07,099 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:07,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:22:07,104 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:07,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:22:07,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:22:07,104 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:22:07,104 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698349639] [2021-08-12 22:22:07,104 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698349639] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:22:07,104 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:22:07,104 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-12 22:22:07,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948630100] [2021-08-12 22:22:07,104 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 22:22:07,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:22:07,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 22:22:07,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-08-12 22:22:07,105 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 28 [2021-08-12 22:22:07,105 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 628 places, 1197 transitions, 210182 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:07,105 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:22:07,105 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 28 [2021-08-12 22:22:07,105 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:22:09,606 INFO L129 PetriNetUnfolder]: 934/2980 cut-off events. [2021-08-12 22:22:09,606 INFO L130 PetriNetUnfolder]: For 426919/432899 co-relation queries the response was YES. [2021-08-12 22:22:09,615 INFO L84 FinitePrefix]: Finished finitePrefix Result has 162012 conditions, 2980 events. 934/2980 cut-off events. For 426919/432899 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 30727 event pairs, 0 based on Foata normal form. 2/2206 useless extension candidates. Maximal degree in co-relation 154479. Up to 1674 conditions per place. [2021-08-12 22:22:09,659 INFO L132 encePairwiseOnDemand]: 18/28 looper letters, 738 selfloop transitions, 211 changer transitions 237/1196 dead transitions. [2021-08-12 22:22:09,659 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 635 places, 1196 transitions, 212370 flow [2021-08-12 22:22:09,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 22:22:09,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-12 22:22:09,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 160 transitions. [2021-08-12 22:22:09,660 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7142857142857143 [2021-08-12 22:22:09,660 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 160 transitions. [2021-08-12 22:22:09,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 160 transitions. [2021-08-12 22:22:09,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:22:09,660 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 160 transitions. [2021-08-12 22:22:09,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 20.0) internal successors, (160), 8 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:09,661 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:09,661 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:09,661 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 608 predicate places. [2021-08-12 22:22:09,661 INFO L482 AbstractCegarLoop]: Abstraction has has 635 places, 1196 transitions, 212370 flow [2021-08-12 22:22:09,661 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:09,661 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:22:09,661 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:22:09,661 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2021-08-12 22:22:09,661 INFO L430 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:22:09,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:22:09,661 INFO L82 PathProgramCache]: Analyzing trace with hash -1589522206, now seen corresponding path program 69 times [2021-08-12 22:22:09,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:22:09,661 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180680876] [2021-08-12 22:22:09,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:22:09,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:22:09,670 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:09,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:22:09,670 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:09,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-12 22:22:09,672 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:09,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-08-12 22:22:09,676 INFO L142 QuantifierPusher]: treesize reduction 3, result has 72.7 percent of original size [2021-08-12 22:22:09,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-08-12 22:22:09,681 INFO L142 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size [2021-08-12 22:22:09,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:22:09,689 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:09,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:22:09,695 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:09,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:22:09,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:09,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:22:09,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:22:09,701 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:22:09,701 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180680876] [2021-08-12 22:22:09,701 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180680876] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:22:09,701 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:22:09,701 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-12 22:22:09,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012012495] [2021-08-12 22:22:09,701 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 22:22:09,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:22:09,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 22:22:09,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-12 22:22:09,702 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 28 [2021-08-12 22:22:09,702 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 635 places, 1196 transitions, 212370 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:09,702 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:22:09,702 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 28 [2021-08-12 22:22:09,702 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:22:12,258 INFO L129 PetriNetUnfolder]: 934/2986 cut-off events. [2021-08-12 22:22:12,258 INFO L130 PetriNetUnfolder]: For 470888/484727 co-relation queries the response was YES. [2021-08-12 22:22:12,266 INFO L84 FinitePrefix]: Finished finitePrefix Result has 163730 conditions, 2986 events. 934/2986 cut-off events. For 470888/484727 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 30797 event pairs, 0 based on Foata normal form. 3/2215 useless extension candidates. Maximal degree in co-relation 156216. Up to 1673 conditions per place. [2021-08-12 22:22:12,311 INFO L132 encePairwiseOnDemand]: 18/28 looper letters, 736 selfloop transitions, 211 changer transitions 238/1195 dead transitions. [2021-08-12 22:22:12,311 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 642 places, 1195 transitions, 214554 flow [2021-08-12 22:22:12,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 22:22:12,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-12 22:22:12,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2021-08-12 22:22:12,312 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7008928571428571 [2021-08-12 22:22:12,312 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 157 transitions. [2021-08-12 22:22:12,312 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 157 transitions. [2021-08-12 22:22:12,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:22:12,312 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 157 transitions. [2021-08-12 22:22:12,312 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 19.625) internal successors, (157), 8 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:12,313 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:12,313 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:12,313 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 615 predicate places. [2021-08-12 22:22:12,313 INFO L482 AbstractCegarLoop]: Abstraction has has 642 places, 1195 transitions, 214554 flow [2021-08-12 22:22:12,313 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:12,313 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:22:12,313 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:22:12,313 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2021-08-12 22:22:12,313 INFO L430 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:22:12,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:22:12,314 INFO L82 PathProgramCache]: Analyzing trace with hash 882048574, now seen corresponding path program 70 times [2021-08-12 22:22:12,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:22:12,314 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102552448] [2021-08-12 22:22:12,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:22:12,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:22:12,325 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:12,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:22:12,326 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:12,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-12 22:22:12,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:12,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:22:12,332 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:12,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:22:12,338 INFO L142 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size [2021-08-12 22:22:12,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:22:12,345 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:12,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:22:12,351 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:12,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:22:12,356 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:12,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:22:12,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:22:12,357 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:22:12,357 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102552448] [2021-08-12 22:22:12,357 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102552448] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:22:12,357 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:22:12,357 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-12 22:22:12,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627646579] [2021-08-12 22:22:12,357 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 22:22:12,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:22:12,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 22:22:12,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-12 22:22:12,358 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 28 [2021-08-12 22:22:12,358 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 642 places, 1195 transitions, 214554 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:12,358 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:22:12,358 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 28 [2021-08-12 22:22:12,358 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:22:14,938 INFO L129 PetriNetUnfolder]: 934/2977 cut-off events. [2021-08-12 22:22:14,938 INFO L130 PetriNetUnfolder]: For 477039/491238 co-relation queries the response was YES. [2021-08-12 22:22:14,946 INFO L84 FinitePrefix]: Finished finitePrefix Result has 165416 conditions, 2977 events. 934/2977 cut-off events. For 477039/491238 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 30715 event pairs, 0 based on Foata normal form. 3/2204 useless extension candidates. Maximal degree in co-relation 157923. Up to 1672 conditions per place. [2021-08-12 22:22:14,992 INFO L132 encePairwiseOnDemand]: 18/28 looper letters, 737 selfloop transitions, 208 changer transitions 239/1194 dead transitions. [2021-08-12 22:22:14,992 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 649 places, 1194 transitions, 216734 flow [2021-08-12 22:22:14,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 22:22:14,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-12 22:22:14,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 160 transitions. [2021-08-12 22:22:14,993 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7142857142857143 [2021-08-12 22:22:14,993 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 160 transitions. [2021-08-12 22:22:14,993 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 160 transitions. [2021-08-12 22:22:14,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:22:14,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 160 transitions. [2021-08-12 22:22:14,993 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 20.0) internal successors, (160), 8 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:14,993 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:14,994 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:14,994 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 622 predicate places. [2021-08-12 22:22:14,994 INFO L482 AbstractCegarLoop]: Abstraction has has 649 places, 1194 transitions, 216734 flow [2021-08-12 22:22:14,994 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:14,994 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:22:14,994 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:22:14,994 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2021-08-12 22:22:14,994 INFO L430 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:22:14,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:22:14,995 INFO L82 PathProgramCache]: Analyzing trace with hash 1525683694, now seen corresponding path program 71 times [2021-08-12 22:22:14,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:22:14,995 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85303583] [2021-08-12 22:22:14,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:22:14,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:22:15,008 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:15,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:22:15,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:15,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-12 22:22:15,012 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:15,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:22:15,017 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:15,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:22:15,025 INFO L142 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size [2021-08-12 22:22:15,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:22:15,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:15,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:22:15,042 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:15,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:22:15,049 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:15,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:22:15,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:22:15,050 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:22:15,050 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85303583] [2021-08-12 22:22:15,050 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85303583] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:22:15,050 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:22:15,050 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-12 22:22:15,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691986352] [2021-08-12 22:22:15,050 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 22:22:15,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:22:15,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 22:22:15,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-12 22:22:15,051 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 28 [2021-08-12 22:22:15,051 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 649 places, 1194 transitions, 216734 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:15,051 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:22:15,051 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 28 [2021-08-12 22:22:15,051 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:22:17,697 INFO L129 PetriNetUnfolder]: 934/2980 cut-off events. [2021-08-12 22:22:17,698 INFO L130 PetriNetUnfolder]: For 483618/498177 co-relation queries the response was YES. [2021-08-12 22:22:17,705 INFO L84 FinitePrefix]: Finished finitePrefix Result has 167122 conditions, 2980 events. 934/2980 cut-off events. For 483618/498177 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 30621 event pairs, 0 based on Foata normal form. 3/2208 useless extension candidates. Maximal degree in co-relation 159652. Up to 1671 conditions per place. [2021-08-12 22:22:17,752 INFO L132 encePairwiseOnDemand]: 18/28 looper letters, 735 selfloop transitions, 208 changer transitions 240/1193 dead transitions. [2021-08-12 22:22:17,752 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 656 places, 1193 transitions, 218910 flow [2021-08-12 22:22:17,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 22:22:17,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-12 22:22:17,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 160 transitions. [2021-08-12 22:22:17,753 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7142857142857143 [2021-08-12 22:22:17,753 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 160 transitions. [2021-08-12 22:22:17,753 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 160 transitions. [2021-08-12 22:22:17,753 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:22:17,753 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 160 transitions. [2021-08-12 22:22:17,753 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 20.0) internal successors, (160), 8 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:17,753 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:17,754 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:17,754 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 629 predicate places. [2021-08-12 22:22:17,754 INFO L482 AbstractCegarLoop]: Abstraction has has 656 places, 1193 transitions, 218910 flow [2021-08-12 22:22:17,754 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:17,754 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:22:17,754 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:22:17,754 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2021-08-12 22:22:17,754 INFO L430 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:22:17,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:22:17,754 INFO L82 PathProgramCache]: Analyzing trace with hash -272664528, now seen corresponding path program 72 times [2021-08-12 22:22:17,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:22:17,755 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485395877] [2021-08-12 22:22:17,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:22:17,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:22:17,761 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:17,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:22:17,761 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:17,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-12 22:22:17,764 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:17,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:22:17,768 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:17,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:22:17,775 INFO L142 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size [2021-08-12 22:22:17,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:22:17,783 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:17,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 22:22:17,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:17,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:22:17,796 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:17,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:22:17,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:22:17,796 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:22:17,796 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485395877] [2021-08-12 22:22:17,796 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485395877] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:22:17,796 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:22:17,796 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-12 22:22:17,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784478987] [2021-08-12 22:22:17,797 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 22:22:17,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:22:17,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 22:22:17,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-08-12 22:22:17,797 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 28 [2021-08-12 22:22:17,797 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 656 places, 1193 transitions, 218910 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:17,797 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:22:17,797 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 28 [2021-08-12 22:22:17,798 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:22:21,358 INFO L129 PetriNetUnfolder]: 933/3001 cut-off events. [2021-08-12 22:22:21,358 INFO L130 PetriNetUnfolder]: For 493612/508531 co-relation queries the response was YES. [2021-08-12 22:22:21,370 INFO L84 FinitePrefix]: Finished finitePrefix Result has 168955 conditions, 3001 events. 933/3001 cut-off events. For 493612/508531 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 31041 event pairs, 0 based on Foata normal form. 3/2230 useless extension candidates. Maximal degree in co-relation 161410. Up to 1671 conditions per place. [2021-08-12 22:22:21,435 INFO L132 encePairwiseOnDemand]: 18/28 looper letters, 729 selfloop transitions, 213 changer transitions 241/1193 dead transitions. [2021-08-12 22:22:21,435 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 663 places, 1193 transitions, 221276 flow [2021-08-12 22:22:21,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 22:22:21,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-12 22:22:21,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 159 transitions. [2021-08-12 22:22:21,436 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7098214285714286 [2021-08-12 22:22:21,436 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 159 transitions. [2021-08-12 22:22:21,436 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 159 transitions. [2021-08-12 22:22:21,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:22:21,436 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 159 transitions. [2021-08-12 22:22:21,438 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 19.875) internal successors, (159), 8 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:21,438 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:21,438 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:21,438 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 636 predicate places. [2021-08-12 22:22:21,438 INFO L482 AbstractCegarLoop]: Abstraction has has 663 places, 1193 transitions, 221276 flow [2021-08-12 22:22:21,438 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:21,438 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:22:21,439 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:22:21,439 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2021-08-12 22:22:21,439 INFO L430 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:22:21,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:22:21,439 INFO L82 PathProgramCache]: Analyzing trace with hash 1161973530, now seen corresponding path program 73 times [2021-08-12 22:22:21,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:22:21,439 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414009805] [2021-08-12 22:22:21,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:22:21,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:22:21,453 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:21,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:22:21,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:21,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-12 22:22:21,456 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:21,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:22:21,461 INFO L142 QuantifierPusher]: treesize reduction 5, result has 61.5 percent of original size [2021-08-12 22:22:21,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-08-12 22:22:21,468 INFO L142 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size [2021-08-12 22:22:21,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:22:21,497 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:21,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:22:21,505 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:21,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:22:21,511 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:21,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:22:21,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:22:21,511 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:22:21,511 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414009805] [2021-08-12 22:22:21,511 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414009805] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:22:21,511 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:22:21,511 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-12 22:22:21,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796456451] [2021-08-12 22:22:21,512 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 22:22:21,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:22:21,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 22:22:21,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-12 22:22:21,512 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 28 [2021-08-12 22:22:21,513 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 663 places, 1193 transitions, 221276 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:21,513 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:22:21,513 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 28 [2021-08-12 22:22:21,513 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:22:24,565 INFO L129 PetriNetUnfolder]: 933/2989 cut-off events. [2021-08-12 22:22:24,565 INFO L130 PetriNetUnfolder]: For 500156/515435 co-relation queries the response was YES. [2021-08-12 22:22:24,574 INFO L84 FinitePrefix]: Finished finitePrefix Result has 170630 conditions, 2989 events. 933/2989 cut-off events. For 500156/515435 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 30917 event pairs, 0 based on Foata normal form. 3/2218 useless extension candidates. Maximal degree in co-relation 163111. Up to 1670 conditions per place. [2021-08-12 22:22:24,621 INFO L132 encePairwiseOnDemand]: 18/28 looper letters, 720 selfloop transitions, 220 changer transitions 242/1192 dead transitions. [2021-08-12 22:22:24,621 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 670 places, 1192 transitions, 223446 flow [2021-08-12 22:22:24,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 22:22:24,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-12 22:22:24,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2021-08-12 22:22:24,622 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7053571428571429 [2021-08-12 22:22:24,622 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 158 transitions. [2021-08-12 22:22:24,622 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 158 transitions. [2021-08-12 22:22:24,622 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:22:24,623 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 158 transitions. [2021-08-12 22:22:24,623 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 19.75) internal successors, (158), 8 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:24,623 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:24,623 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:24,623 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 643 predicate places. [2021-08-12 22:22:24,623 INFO L482 AbstractCegarLoop]: Abstraction has has 670 places, 1192 transitions, 223446 flow [2021-08-12 22:22:24,623 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:24,623 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:22:24,623 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:22:24,623 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2021-08-12 22:22:24,623 INFO L430 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:22:24,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:22:24,624 INFO L82 PathProgramCache]: Analyzing trace with hash -2083327728, now seen corresponding path program 74 times [2021-08-12 22:22:24,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:22:24,624 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151539947] [2021-08-12 22:22:24,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:22:24,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:22:24,631 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:24,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:22:24,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:24,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-12 22:22:24,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:24,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:22:24,641 INFO L142 QuantifierPusher]: treesize reduction 5, result has 61.5 percent of original size [2021-08-12 22:22:24,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-08-12 22:22:24,648 INFO L142 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size [2021-08-12 22:22:24,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:22:24,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:24,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 22:22:24,664 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:24,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:22:24,669 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:24,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:22:24,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:22:24,669 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:22:24,670 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151539947] [2021-08-12 22:22:24,670 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151539947] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:22:24,670 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:22:24,670 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-12 22:22:24,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677875304] [2021-08-12 22:22:24,670 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 22:22:24,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:22:24,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 22:22:24,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-08-12 22:22:24,671 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 28 [2021-08-12 22:22:24,671 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 670 places, 1192 transitions, 223446 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:24,671 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:22:24,671 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 28 [2021-08-12 22:22:24,671 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:22:27,503 INFO L129 PetriNetUnfolder]: 933/2998 cut-off events. [2021-08-12 22:22:27,504 INFO L130 PetriNetUnfolder]: For 505888/521527 co-relation queries the response was YES. [2021-08-12 22:22:27,512 INFO L84 FinitePrefix]: Finished finitePrefix Result has 172341 conditions, 2998 events. 933/2998 cut-off events. For 505888/521527 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 31049 event pairs, 0 based on Foata normal form. 3/2227 useless extension candidates. Maximal degree in co-relation 164850. Up to 1669 conditions per place. [2021-08-12 22:22:27,559 INFO L132 encePairwiseOnDemand]: 18/28 looper letters, 718 selfloop transitions, 220 changer transitions 243/1191 dead transitions. [2021-08-12 22:22:27,559 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 677 places, 1191 transitions, 225612 flow [2021-08-12 22:22:27,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 22:22:27,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-12 22:22:27,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2021-08-12 22:22:27,560 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7008928571428571 [2021-08-12 22:22:27,560 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 157 transitions. [2021-08-12 22:22:27,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 157 transitions. [2021-08-12 22:22:27,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:22:27,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 157 transitions. [2021-08-12 22:22:27,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 19.625) internal successors, (157), 8 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:27,560 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:27,560 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:27,560 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 650 predicate places. [2021-08-12 22:22:27,561 INFO L482 AbstractCegarLoop]: Abstraction has has 677 places, 1191 transitions, 225612 flow [2021-08-12 22:22:27,561 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:27,561 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:22:27,561 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:22:27,561 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2021-08-12 22:22:27,561 INFO L430 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:22:27,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:22:27,561 INFO L82 PathProgramCache]: Analyzing trace with hash 1789318134, now seen corresponding path program 75 times [2021-08-12 22:22:27,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:22:27,561 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746608168] [2021-08-12 22:22:27,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:22:27,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:22:27,581 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:27,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:22:27,581 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:27,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-12 22:22:27,584 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:27,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:22:27,589 INFO L142 QuantifierPusher]: treesize reduction 5, result has 61.5 percent of original size [2021-08-12 22:22:27,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-08-12 22:22:27,595 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:27,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:22:27,599 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:27,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:22:27,607 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:27,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:22:27,612 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:27,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:22:27,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:22:27,613 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:22:27,613 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746608168] [2021-08-12 22:22:27,613 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746608168] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:22:27,613 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:22:27,613 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-12 22:22:27,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140923855] [2021-08-12 22:22:27,614 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 22:22:27,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:22:27,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 22:22:27,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-12 22:22:27,614 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 28 [2021-08-12 22:22:27,614 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 677 places, 1191 transitions, 225612 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:27,614 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:22:27,614 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 28 [2021-08-12 22:22:27,614 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:22:30,676 INFO L129 PetriNetUnfolder]: 933/3032 cut-off events. [2021-08-12 22:22:30,676 INFO L130 PetriNetUnfolder]: For 531366/547365 co-relation queries the response was YES. [2021-08-12 22:22:30,684 INFO L84 FinitePrefix]: Finished finitePrefix Result has 175320 conditions, 3032 events. 933/3032 cut-off events. For 531366/547365 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 31580 event pairs, 0 based on Foata normal form. 3/2256 useless extension candidates. Maximal degree in co-relation 167447. Up to 1681 conditions per place. [2021-08-12 22:22:30,734 INFO L132 encePairwiseOnDemand]: 18/28 looper letters, 727 selfloop transitions, 222 changer transitions 244/1203 dead transitions. [2021-08-12 22:22:30,734 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 684 places, 1203 transitions, 230294 flow [2021-08-12 22:22:30,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 22:22:30,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-12 22:22:30,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2021-08-12 22:22:30,739 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.6964285714285714 [2021-08-12 22:22:30,739 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 156 transitions. [2021-08-12 22:22:30,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 156 transitions. [2021-08-12 22:22:30,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:22:30,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 156 transitions. [2021-08-12 22:22:30,740 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 19.5) internal successors, (156), 8 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:30,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:30,740 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:30,740 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 657 predicate places. [2021-08-12 22:22:30,740 INFO L482 AbstractCegarLoop]: Abstraction has has 684 places, 1203 transitions, 230294 flow [2021-08-12 22:22:30,740 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:30,740 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:22:30,740 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:22:30,740 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2021-08-12 22:22:30,740 INFO L430 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:22:30,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:22:30,741 INFO L82 PathProgramCache]: Analyzing trace with hash -1465413364, now seen corresponding path program 76 times [2021-08-12 22:22:30,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:22:30,741 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325119528] [2021-08-12 22:22:30,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:22:30,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:22:30,747 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:30,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:22:30,748 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:30,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-12 22:22:30,750 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:30,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:22:30,757 INFO L142 QuantifierPusher]: treesize reduction 3, result has 72.7 percent of original size [2021-08-12 22:22:30,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-08-12 22:22:30,763 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:30,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:22:30,768 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:30,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:22:30,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:30,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:22:30,781 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:30,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:22:30,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:22:30,782 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:22:30,782 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325119528] [2021-08-12 22:22:30,782 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325119528] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:22:30,782 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:22:30,782 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-12 22:22:30,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534982594] [2021-08-12 22:22:30,783 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 22:22:30,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:22:30,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 22:22:30,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-08-12 22:22:30,783 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 28 [2021-08-12 22:22:30,783 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 684 places, 1203 transitions, 230294 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:30,783 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:22:30,784 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 28 [2021-08-12 22:22:30,784 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:22:33,784 INFO L129 PetriNetUnfolder]: 933/3031 cut-off events. [2021-08-12 22:22:33,784 INFO L130 PetriNetUnfolder]: For 537854/554213 co-relation queries the response was YES. [2021-08-12 22:22:33,792 INFO L84 FinitePrefix]: Finished finitePrefix Result has 177020 conditions, 3031 events. 933/3031 cut-off events. For 537854/554213 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 31574 event pairs, 0 based on Foata normal form. 3/2257 useless extension candidates. Maximal degree in co-relation 169175. Up to 1680 conditions per place. [2021-08-12 22:22:33,841 INFO L132 encePairwiseOnDemand]: 18/28 looper letters, 733 selfloop transitions, 214 changer transitions 245/1202 dead transitions. [2021-08-12 22:22:33,841 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 691 places, 1202 transitions, 232478 flow [2021-08-12 22:22:33,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 22:22:33,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-12 22:22:33,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2021-08-12 22:22:33,842 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7008928571428571 [2021-08-12 22:22:33,842 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 157 transitions. [2021-08-12 22:22:33,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 157 transitions. [2021-08-12 22:22:33,842 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:22:33,842 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 157 transitions. [2021-08-12 22:22:33,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 19.625) internal successors, (157), 8 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:33,842 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:33,842 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:33,842 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 664 predicate places. [2021-08-12 22:22:33,842 INFO L482 AbstractCegarLoop]: Abstraction has has 691 places, 1202 transitions, 232478 flow [2021-08-12 22:22:33,843 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:33,843 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:22:33,843 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:22:33,843 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2021-08-12 22:22:33,843 INFO L430 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:22:33,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:22:33,843 INFO L82 PathProgramCache]: Analyzing trace with hash 998714560, now seen corresponding path program 77 times [2021-08-12 22:22:33,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:22:33,843 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133890498] [2021-08-12 22:22:33,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:22:33,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:22:33,856 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:33,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:22:33,856 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:33,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-12 22:22:33,859 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:33,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:22:33,865 INFO L142 QuantifierPusher]: treesize reduction 3, result has 72.7 percent of original size [2021-08-12 22:22:33,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-08-12 22:22:33,871 INFO L142 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size [2021-08-12 22:22:33,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:22:33,879 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:33,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:22:33,886 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:33,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:22:33,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:33,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:22:33,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:22:33,893 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:22:33,893 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133890498] [2021-08-12 22:22:33,893 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133890498] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:22:33,893 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:22:33,893 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-12 22:22:33,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8055929] [2021-08-12 22:22:33,893 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 22:22:33,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:22:33,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 22:22:33,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-08-12 22:22:33,894 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 28 [2021-08-12 22:22:33,894 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 691 places, 1202 transitions, 232478 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:33,894 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:22:33,894 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 28 [2021-08-12 22:22:33,894 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:22:36,755 INFO L129 PetriNetUnfolder]: 933/3042 cut-off events. [2021-08-12 22:22:36,755 INFO L130 PetriNetUnfolder]: For 544511/561230 co-relation queries the response was YES. [2021-08-12 22:22:36,764 INFO L84 FinitePrefix]: Finished finitePrefix Result has 178746 conditions, 3042 events. 933/3042 cut-off events. For 544511/561230 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 31832 event pairs, 0 based on Foata normal form. 3/2270 useless extension candidates. Maximal degree in co-relation 170931. Up to 1679 conditions per place. [2021-08-12 22:22:36,814 INFO L132 encePairwiseOnDemand]: 18/28 looper letters, 735 selfloop transitions, 210 changer transitions 246/1201 dead transitions. [2021-08-12 22:22:36,815 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 698 places, 1201 transitions, 234658 flow [2021-08-12 22:22:36,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 22:22:36,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-12 22:22:36,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2021-08-12 22:22:36,815 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7053571428571429 [2021-08-12 22:22:36,815 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 158 transitions. [2021-08-12 22:22:36,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 158 transitions. [2021-08-12 22:22:36,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:22:36,815 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 158 transitions. [2021-08-12 22:22:36,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 19.75) internal successors, (158), 8 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:36,816 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:36,816 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:36,816 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 671 predicate places. [2021-08-12 22:22:36,816 INFO L482 AbstractCegarLoop]: Abstraction has has 698 places, 1201 transitions, 234658 flow [2021-08-12 22:22:36,816 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:36,816 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:22:36,816 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:22:36,816 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2021-08-12 22:22:36,816 INFO L430 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:22:36,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:22:36,817 INFO L82 PathProgramCache]: Analyzing trace with hash -783513844, now seen corresponding path program 78 times [2021-08-12 22:22:36,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:22:36,817 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562139682] [2021-08-12 22:22:36,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:22:36,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:22:36,822 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:36,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:22:36,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:36,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-12 22:22:36,825 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:36,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:22:36,829 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:36,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:22:36,835 INFO L142 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size [2021-08-12 22:22:36,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:22:36,842 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:36,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:22:36,848 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:36,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:22:36,853 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:36,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:22:36,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:22:36,853 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:22:36,853 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562139682] [2021-08-12 22:22:36,853 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562139682] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:22:36,853 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:22:36,853 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-12 22:22:36,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965942964] [2021-08-12 22:22:36,853 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 22:22:36,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:22:36,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 22:22:36,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-08-12 22:22:36,854 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 28 [2021-08-12 22:22:36,854 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 698 places, 1201 transitions, 234658 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:36,854 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:22:36,854 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 28 [2021-08-12 22:22:36,854 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:22:39,408 INFO L129 PetriNetUnfolder]: 933/3005 cut-off events. [2021-08-12 22:22:39,408 INFO L130 PetriNetUnfolder]: For 551567/568646 co-relation queries the response was YES. [2021-08-12 22:22:39,417 INFO L84 FinitePrefix]: Finished finitePrefix Result has 180377 conditions, 3005 events. 933/3005 cut-off events. For 551567/568646 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 31148 event pairs, 0 based on Foata normal form. 3/2229 useless extension candidates. Maximal degree in co-relation 172594. Up to 1678 conditions per place. [2021-08-12 22:22:39,632 INFO L132 encePairwiseOnDemand]: 18/28 looper letters, 730 selfloop transitions, 213 changer transitions 247/1200 dead transitions. [2021-08-12 22:22:39,632 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 705 places, 1200 transitions, 236834 flow [2021-08-12 22:22:39,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 22:22:39,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-12 22:22:39,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 159 transitions. [2021-08-12 22:22:39,633 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7098214285714286 [2021-08-12 22:22:39,633 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 159 transitions. [2021-08-12 22:22:39,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 159 transitions. [2021-08-12 22:22:39,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:22:39,633 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 159 transitions. [2021-08-12 22:22:39,633 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 19.875) internal successors, (159), 8 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:39,633 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:39,634 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:39,634 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 678 predicate places. [2021-08-12 22:22:39,634 INFO L482 AbstractCegarLoop]: Abstraction has has 705 places, 1200 transitions, 236834 flow [2021-08-12 22:22:39,634 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:39,634 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:22:39,634 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:22:39,634 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2021-08-12 22:22:39,634 INFO L430 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:22:39,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:22:39,634 INFO L82 PathProgramCache]: Analyzing trace with hash 1890422640, now seen corresponding path program 79 times [2021-08-12 22:22:39,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:22:39,634 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705223714] [2021-08-12 22:22:39,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:22:39,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:22:39,643 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:39,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:22:39,643 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:39,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-12 22:22:39,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:39,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:22:39,652 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:39,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:22:39,659 INFO L142 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size [2021-08-12 22:22:39,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:22:39,668 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:39,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 22:22:39,675 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:39,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:22:39,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:39,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:22:39,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:22:39,680 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:22:39,680 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705223714] [2021-08-12 22:22:39,680 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705223714] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:22:39,681 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:22:39,681 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-12 22:22:39,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113306319] [2021-08-12 22:22:39,681 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 22:22:39,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:22:39,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 22:22:39,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-08-12 22:22:39,681 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 28 [2021-08-12 22:22:39,682 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 705 places, 1200 transitions, 236834 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:39,682 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:22:39,682 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 28 [2021-08-12 22:22:39,682 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:22:42,375 INFO L129 PetriNetUnfolder]: 933/3006 cut-off events. [2021-08-12 22:22:42,375 INFO L130 PetriNetUnfolder]: For 504888/512232 co-relation queries the response was YES. [2021-08-12 22:22:42,384 INFO L84 FinitePrefix]: Finished finitePrefix Result has 182069 conditions, 3006 events. 933/3006 cut-off events. For 504888/512232 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 31226 event pairs, 0 based on Foata normal form. 2/2231 useless extension candidates. Maximal degree in co-relation 174320. Up to 1677 conditions per place. [2021-08-12 22:22:42,585 INFO L132 encePairwiseOnDemand]: 18/28 looper letters, 727 selfloop transitions, 214 changer transitions 248/1199 dead transitions. [2021-08-12 22:22:42,585 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 712 places, 1199 transitions, 239006 flow [2021-08-12 22:22:42,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 22:22:42,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-12 22:22:42,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 159 transitions. [2021-08-12 22:22:42,586 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7098214285714286 [2021-08-12 22:22:42,586 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 159 transitions. [2021-08-12 22:22:42,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 159 transitions. [2021-08-12 22:22:42,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:22:42,586 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 159 transitions. [2021-08-12 22:22:42,586 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 19.875) internal successors, (159), 8 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:42,587 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:42,587 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:42,587 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 685 predicate places. [2021-08-12 22:22:42,587 INFO L482 AbstractCegarLoop]: Abstraction has has 712 places, 1199 transitions, 239006 flow [2021-08-12 22:22:42,587 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:42,587 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:22:42,587 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:22:42,587 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2021-08-12 22:22:42,587 INFO L430 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:22:42,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:22:42,587 INFO L82 PathProgramCache]: Analyzing trace with hash 1019935174, now seen corresponding path program 80 times [2021-08-12 22:22:42,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:22:42,588 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937262141] [2021-08-12 22:22:42,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:22:42,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:22:42,594 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:42,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:22:42,594 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:42,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-12 22:22:42,597 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:42,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:22:42,602 INFO L142 QuantifierPusher]: treesize reduction 3, result has 72.7 percent of original size [2021-08-12 22:22:42,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-08-12 22:22:42,608 INFO L142 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size [2021-08-12 22:22:42,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:22:42,624 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:42,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:22:42,632 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:42,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:22:42,637 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:42,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:22:42,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:22:42,637 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:22:42,637 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937262141] [2021-08-12 22:22:42,637 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937262141] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:22:42,637 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:22:42,637 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-12 22:22:42,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759364988] [2021-08-12 22:22:42,638 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 22:22:42,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:22:42,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 22:22:42,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-08-12 22:22:42,638 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 28 [2021-08-12 22:22:42,638 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 712 places, 1199 transitions, 239006 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:42,638 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:22:42,638 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 28 [2021-08-12 22:22:42,638 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:22:45,293 INFO L129 PetriNetUnfolder]: 933/3029 cut-off events. [2021-08-12 22:22:45,293 INFO L130 PetriNetUnfolder]: For 508333/515801 co-relation queries the response was YES. [2021-08-12 22:22:45,302 INFO L84 FinitePrefix]: Finished finitePrefix Result has 183812 conditions, 3029 events. 933/3029 cut-off events. For 508333/515801 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 31609 event pairs, 0 based on Foata normal form. 2/2256 useless extension candidates. Maximal degree in co-relation 176099. Up to 1676 conditions per place. [2021-08-12 22:22:45,356 INFO L132 encePairwiseOnDemand]: 18/28 looper letters, 731 selfloop transitions, 208 changer transitions 249/1198 dead transitions. [2021-08-12 22:22:45,356 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 719 places, 1198 transitions, 241174 flow [2021-08-12 22:22:45,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 22:22:45,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-12 22:22:45,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2021-08-12 22:22:45,357 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7008928571428571 [2021-08-12 22:22:45,357 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 157 transitions. [2021-08-12 22:22:45,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 157 transitions. [2021-08-12 22:22:45,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:22:45,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 157 transitions. [2021-08-12 22:22:45,357 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 19.625) internal successors, (157), 8 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:45,357 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:45,357 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:45,358 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 692 predicate places. [2021-08-12 22:22:45,358 INFO L482 AbstractCegarLoop]: Abstraction has has 719 places, 1198 transitions, 241174 flow [2021-08-12 22:22:45,358 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:45,358 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:22:45,358 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:22:45,358 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2021-08-12 22:22:45,358 INFO L430 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:22:45,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:22:45,358 INFO L82 PathProgramCache]: Analyzing trace with hash -779010794, now seen corresponding path program 81 times [2021-08-12 22:22:45,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:22:45,358 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628832723] [2021-08-12 22:22:45,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:22:45,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:22:45,366 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:45,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:22:45,367 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:45,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-12 22:22:45,370 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:45,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:22:45,374 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:45,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:22:45,381 INFO L142 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size [2021-08-12 22:22:45,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:22:45,390 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:45,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 22:22:45,397 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:45,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:22:45,402 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:45,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:22:45,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:22:45,403 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:22:45,403 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628832723] [2021-08-12 22:22:45,403 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628832723] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:22:45,403 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:22:45,403 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-12 22:22:45,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394870056] [2021-08-12 22:22:45,404 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 22:22:45,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:22:45,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 22:22:45,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-08-12 22:22:45,404 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 28 [2021-08-12 22:22:45,404 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 719 places, 1198 transitions, 241174 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:45,404 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:22:45,404 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 28 [2021-08-12 22:22:45,404 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:22:48,211 INFO L129 PetriNetUnfolder]: 933/3015 cut-off events. [2021-08-12 22:22:48,211 INFO L130 PetriNetUnfolder]: For 447481/449010 co-relation queries the response was YES. [2021-08-12 22:22:48,220 INFO L84 FinitePrefix]: Finished finitePrefix Result has 185483 conditions, 3015 events. 933/3015 cut-off events. For 447481/449010 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 31447 event pairs, 0 based on Foata normal form. 2/2237 useless extension candidates. Maximal degree in co-relation 177808. Up to 1675 conditions per place. [2021-08-12 22:22:48,272 INFO L132 encePairwiseOnDemand]: 18/28 looper letters, 726 selfloop transitions, 211 changer transitions 250/1197 dead transitions. [2021-08-12 22:22:48,272 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 726 places, 1197 transitions, 243338 flow [2021-08-12 22:22:48,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 22:22:48,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-12 22:22:48,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 159 transitions. [2021-08-12 22:22:48,273 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7098214285714286 [2021-08-12 22:22:48,273 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 159 transitions. [2021-08-12 22:22:48,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 159 transitions. [2021-08-12 22:22:48,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:22:48,273 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 159 transitions. [2021-08-12 22:22:48,274 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 19.875) internal successors, (159), 8 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:48,274 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:48,274 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:48,274 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 699 predicate places. [2021-08-12 22:22:48,274 INFO L482 AbstractCegarLoop]: Abstraction has has 726 places, 1197 transitions, 243338 flow [2021-08-12 22:22:48,274 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:48,274 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:22:48,274 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:22:48,275 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2021-08-12 22:22:48,275 INFO L430 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:22:48,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:22:48,275 INFO L82 PathProgramCache]: Analyzing trace with hash -1885695402, now seen corresponding path program 82 times [2021-08-12 22:22:48,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:22:48,275 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462363626] [2021-08-12 22:22:48,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:22:48,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:22:48,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:48,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:22:48,292 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:48,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-12 22:22:48,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:48,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:22:48,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:48,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:22:48,306 INFO L142 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size [2021-08-12 22:22:48,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:22:48,315 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:48,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:22:48,322 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:48,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:22:48,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:48,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:22:48,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:22:48,328 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:22:48,329 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462363626] [2021-08-12 22:22:48,329 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462363626] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:22:48,329 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:22:48,329 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-12 22:22:48,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780358166] [2021-08-12 22:22:48,329 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 22:22:48,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:22:48,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 22:22:48,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-12 22:22:48,330 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 28 [2021-08-12 22:22:48,331 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 726 places, 1197 transitions, 243338 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:48,331 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:22:48,331 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 28 [2021-08-12 22:22:48,331 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:22:51,167 INFO L129 PetriNetUnfolder]: 933/2995 cut-off events. [2021-08-12 22:22:51,167 INFO L130 PetriNetUnfolder]: For 451009/452562 co-relation queries the response was YES. [2021-08-12 22:22:51,176 INFO L84 FinitePrefix]: Finished finitePrefix Result has 187138 conditions, 2995 events. 933/2995 cut-off events. For 451009/452562 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 31106 event pairs, 0 based on Foata normal form. 2/2218 useless extension candidates. Maximal degree in co-relation 179503. Up to 1674 conditions per place. [2021-08-12 22:22:51,228 INFO L132 encePairwiseOnDemand]: 18/28 looper letters, 726 selfloop transitions, 209 changer transitions 251/1196 dead transitions. [2021-08-12 22:22:51,228 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 733 places, 1196 transitions, 245498 flow [2021-08-12 22:22:51,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 22:22:51,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-12 22:22:51,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2021-08-12 22:22:51,229 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7053571428571429 [2021-08-12 22:22:51,229 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 158 transitions. [2021-08-12 22:22:51,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 158 transitions. [2021-08-12 22:22:51,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:22:51,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 158 transitions. [2021-08-12 22:22:51,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 19.75) internal successors, (158), 8 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:51,230 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:51,230 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:51,230 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 706 predicate places. [2021-08-12 22:22:51,230 INFO L482 AbstractCegarLoop]: Abstraction has has 733 places, 1196 transitions, 245498 flow [2021-08-12 22:22:51,230 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:51,230 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:22:51,230 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:22:51,230 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2021-08-12 22:22:51,230 INFO L430 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:22:51,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:22:51,230 INFO L82 PathProgramCache]: Analyzing trace with hash -1834483174, now seen corresponding path program 83 times [2021-08-12 22:22:51,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:22:51,231 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086515844] [2021-08-12 22:22:51,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:22:51,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:22:51,235 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:51,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:22:51,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:51,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-12 22:22:51,238 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:51,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:22:51,242 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:51,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:22:51,248 INFO L142 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size [2021-08-12 22:22:51,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:22:51,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:51,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:22:51,261 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:51,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:22:51,266 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:51,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:22:51,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:22:51,267 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:22:51,267 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086515844] [2021-08-12 22:22:51,267 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086515844] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:22:51,267 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:22:51,267 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-12 22:22:51,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260420899] [2021-08-12 22:22:51,267 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 22:22:51,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:22:51,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 22:22:51,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-12 22:22:51,267 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 28 [2021-08-12 22:22:51,268 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 733 places, 1196 transitions, 245498 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:51,268 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:22:51,268 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 28 [2021-08-12 22:22:51,268 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:22:54,180 INFO L129 PetriNetUnfolder]: 933/2974 cut-off events. [2021-08-12 22:22:54,180 INFO L130 PetriNetUnfolder]: For 453523/455100 co-relation queries the response was YES. [2021-08-12 22:22:54,188 INFO L84 FinitePrefix]: Finished finitePrefix Result has 188788 conditions, 2974 events. 933/2974 cut-off events. For 453523/455100 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 30720 event pairs, 0 based on Foata normal form. 2/2194 useless extension candidates. Maximal degree in co-relation 181195. Up to 1673 conditions per place. [2021-08-12 22:22:54,241 INFO L132 encePairwiseOnDemand]: 18/28 looper letters, 725 selfloop transitions, 208 changer transitions 252/1195 dead transitions. [2021-08-12 22:22:54,241 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 740 places, 1195 transitions, 247654 flow [2021-08-12 22:22:54,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 22:22:54,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-12 22:22:54,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 159 transitions. [2021-08-12 22:22:54,242 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7098214285714286 [2021-08-12 22:22:54,242 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 159 transitions. [2021-08-12 22:22:54,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 159 transitions. [2021-08-12 22:22:54,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:22:54,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 159 transitions. [2021-08-12 22:22:54,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 19.875) internal successors, (159), 8 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:54,243 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:54,243 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:54,243 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 713 predicate places. [2021-08-12 22:22:54,243 INFO L482 AbstractCegarLoop]: Abstraction has has 740 places, 1195 transitions, 247654 flow [2021-08-12 22:22:54,243 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:54,243 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:22:54,243 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:22:54,243 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2021-08-12 22:22:54,244 INFO L430 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:22:54,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:22:54,244 INFO L82 PathProgramCache]: Analyzing trace with hash 770541218, now seen corresponding path program 84 times [2021-08-12 22:22:54,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:22:54,244 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374239163] [2021-08-12 22:22:54,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:22:54,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:22:54,259 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:54,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:22:54,260 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:54,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-12 22:22:54,262 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:54,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:22:54,267 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:54,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:22:54,276 INFO L142 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size [2021-08-12 22:22:54,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:22:54,283 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:54,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:22:54,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:54,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:22:54,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:54,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:22:54,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:22:54,295 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:22:54,295 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374239163] [2021-08-12 22:22:54,295 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374239163] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:22:54,295 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:22:54,295 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-12 22:22:54,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359853313] [2021-08-12 22:22:54,295 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 22:22:54,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:22:54,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 22:22:54,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-12 22:22:54,297 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 28 [2021-08-12 22:22:54,297 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 740 places, 1195 transitions, 247654 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:54,297 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:22:54,297 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 28 [2021-08-12 22:22:54,297 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:22:57,203 INFO L129 PetriNetUnfolder]: 933/3020 cut-off events. [2021-08-12 22:22:57,203 INFO L130 PetriNetUnfolder]: For 455479/457080 co-relation queries the response was YES. [2021-08-12 22:22:57,212 INFO L84 FinitePrefix]: Finished finitePrefix Result has 190561 conditions, 3020 events. 933/3020 cut-off events. For 455479/457080 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 31549 event pairs, 0 based on Foata normal form. 2/2246 useless extension candidates. Maximal degree in co-relation 183012. Up to 1672 conditions per place. [2021-08-12 22:22:57,266 INFO L132 encePairwiseOnDemand]: 18/28 looper letters, 723 selfloop transitions, 208 changer transitions 253/1194 dead transitions. [2021-08-12 22:22:57,266 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 747 places, 1194 transitions, 249806 flow [2021-08-12 22:22:57,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 22:22:57,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-12 22:22:57,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2021-08-12 22:22:57,274 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7053571428571429 [2021-08-12 22:22:57,274 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 158 transitions. [2021-08-12 22:22:57,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 158 transitions. [2021-08-12 22:22:57,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:22:57,275 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 158 transitions. [2021-08-12 22:22:57,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 19.75) internal successors, (158), 8 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:57,275 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:57,275 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:57,275 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 720 predicate places. [2021-08-12 22:22:57,275 INFO L482 AbstractCegarLoop]: Abstraction has has 747 places, 1194 transitions, 249806 flow [2021-08-12 22:22:57,275 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:57,276 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:22:57,276 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:22:57,276 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2021-08-12 22:22:57,276 INFO L430 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:22:57,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:22:57,276 INFO L82 PathProgramCache]: Analyzing trace with hash -188639696, now seen corresponding path program 85 times [2021-08-12 22:22:57,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:22:57,276 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496817094] [2021-08-12 22:22:57,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:22:57,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:22:57,281 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:57,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:22:57,281 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:57,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-12 22:22:57,284 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:57,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:22:57,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:57,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:22:57,294 INFO L142 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size [2021-08-12 22:22:57,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:22:57,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:57,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:22:57,306 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:57,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:22:57,312 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:22:57,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:22:57,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:22:57,312 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:22:57,312 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496817094] [2021-08-12 22:22:57,312 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496817094] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:22:57,312 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:22:57,312 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-12 22:22:57,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034449662] [2021-08-12 22:22:57,312 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 22:22:57,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:22:57,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 22:22:57,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-12 22:22:57,313 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 28 [2021-08-12 22:22:57,313 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 747 places, 1194 transitions, 249806 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:22:57,313 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:22:57,313 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 28 [2021-08-12 22:22:57,313 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:23:00,292 INFO L129 PetriNetUnfolder]: 933/3021 cut-off events. [2021-08-12 22:23:00,292 INFO L130 PetriNetUnfolder]: For 458146/459771 co-relation queries the response was YES. [2021-08-12 22:23:00,301 INFO L84 FinitePrefix]: Finished finitePrefix Result has 192252 conditions, 3021 events. 933/3021 cut-off events. For 458146/459771 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 31558 event pairs, 0 based on Foata normal form. 2/2247 useless extension candidates. Maximal degree in co-relation 184749. Up to 1671 conditions per place. [2021-08-12 22:23:00,355 INFO L132 encePairwiseOnDemand]: 18/28 looper letters, 722 selfloop transitions, 207 changer transitions 254/1193 dead transitions. [2021-08-12 22:23:00,355 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 754 places, 1193 transitions, 251954 flow [2021-08-12 22:23:00,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 22:23:00,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-12 22:23:00,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2021-08-12 22:23:00,356 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7008928571428571 [2021-08-12 22:23:00,356 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 157 transitions. [2021-08-12 22:23:00,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 157 transitions. [2021-08-12 22:23:00,356 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:23:00,356 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 157 transitions. [2021-08-12 22:23:00,357 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 19.625) internal successors, (157), 8 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:23:00,357 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:23:00,357 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:23:00,357 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 727 predicate places. [2021-08-12 22:23:00,357 INFO L482 AbstractCegarLoop]: Abstraction has has 754 places, 1193 transitions, 251954 flow [2021-08-12 22:23:00,357 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:23:00,357 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:23:00,357 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:23:00,357 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2021-08-12 22:23:00,357 INFO L430 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:23:00,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:23:00,358 INFO L82 PathProgramCache]: Analyzing trace with hash 363291338, now seen corresponding path program 86 times [2021-08-12 22:23:00,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:23:00,358 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461978760] [2021-08-12 22:23:00,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:23:00,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:23:00,371 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:00,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:00,372 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:00,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-12 22:23:00,374 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:00,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:23:00,378 INFO L142 QuantifierPusher]: treesize reduction 3, result has 72.7 percent of original size [2021-08-12 22:23:00,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-08-12 22:23:00,383 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:00,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:23:00,387 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:00,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:23:00,394 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:00,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:23:00,399 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:00,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:00,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:23:00,400 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:23:00,400 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461978760] [2021-08-12 22:23:00,400 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461978760] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:23:00,400 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:23:00,400 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-12 22:23:00,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296478783] [2021-08-12 22:23:00,400 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 22:23:00,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:23:00,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 22:23:00,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-08-12 22:23:00,401 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 28 [2021-08-12 22:23:00,401 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 754 places, 1193 transitions, 251954 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:23:00,401 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:23:00,401 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 28 [2021-08-12 22:23:00,401 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:23:04,872 INFO L129 PetriNetUnfolder]: 933/3010 cut-off events. [2021-08-12 22:23:04,872 INFO L130 PetriNetUnfolder]: For 459796/461445 co-relation queries the response was YES. [2021-08-12 22:23:04,883 INFO L84 FinitePrefix]: Finished finitePrefix Result has 193912 conditions, 3010 events. 933/3010 cut-off events. For 459796/461445 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 31414 event pairs, 0 based on Foata normal form. 2/2234 useless extension candidates. Maximal degree in co-relation 186457. Up to 1670 conditions per place. [2021-08-12 22:23:04,958 INFO L132 encePairwiseOnDemand]: 18/28 looper letters, 719 selfloop transitions, 208 changer transitions 255/1192 dead transitions. [2021-08-12 22:23:04,958 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 761 places, 1192 transitions, 254098 flow [2021-08-12 22:23:04,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 22:23:04,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-12 22:23:04,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2021-08-12 22:23:04,959 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7008928571428571 [2021-08-12 22:23:04,959 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 157 transitions. [2021-08-12 22:23:04,959 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 157 transitions. [2021-08-12 22:23:04,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:23:04,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 157 transitions. [2021-08-12 22:23:04,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 19.625) internal successors, (157), 8 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:23:04,959 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:23:04,959 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:23:04,960 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 734 predicate places. [2021-08-12 22:23:04,960 INFO L482 AbstractCegarLoop]: Abstraction has has 761 places, 1192 transitions, 254098 flow [2021-08-12 22:23:04,960 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:23:04,960 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:23:04,960 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:23:04,960 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2021-08-12 22:23:04,960 INFO L430 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:23:04,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:23:04,960 INFO L82 PathProgramCache]: Analyzing trace with hash 1386272568, now seen corresponding path program 87 times [2021-08-12 22:23:04,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:23:04,960 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544650396] [2021-08-12 22:23:04,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:23:04,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:23:04,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:04,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:04,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:04,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-12 22:23:04,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:04,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:23:04,977 INFO L142 QuantifierPusher]: treesize reduction 3, result has 72.7 percent of original size [2021-08-12 22:23:04,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-08-12 22:23:04,983 INFO L142 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size [2021-08-12 22:23:04,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:23:04,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:04,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:23:04,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:04,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:23:05,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:05,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:05,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:23:05,005 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:23:05,005 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544650396] [2021-08-12 22:23:05,005 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544650396] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:23:05,005 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:23:05,005 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-12 22:23:05,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610736416] [2021-08-12 22:23:05,006 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 22:23:05,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:23:05,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 22:23:05,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-08-12 22:23:05,006 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 28 [2021-08-12 22:23:05,006 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 761 places, 1192 transitions, 254098 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:23:05,006 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:23:05,006 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 28 [2021-08-12 22:23:05,006 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:23:08,244 INFO L129 PetriNetUnfolder]: 933/2992 cut-off events. [2021-08-12 22:23:08,244 INFO L130 PetriNetUnfolder]: For 538998/547334 co-relation queries the response was YES. [2021-08-12 22:23:08,253 INFO L84 FinitePrefix]: Finished finitePrefix Result has 195554 conditions, 2992 events. 933/2992 cut-off events. For 538998/547334 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 31057 event pairs, 0 based on Foata normal form. 2/2217 useless extension candidates. Maximal degree in co-relation 188149. Up to 1669 conditions per place. [2021-08-12 22:23:08,307 INFO L132 encePairwiseOnDemand]: 18/28 looper letters, 717 selfloop transitions, 208 changer transitions 256/1191 dead transitions. [2021-08-12 22:23:08,307 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 768 places, 1191 transitions, 256238 flow [2021-08-12 22:23:08,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 22:23:08,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-12 22:23:08,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2021-08-12 22:23:08,308 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7053571428571429 [2021-08-12 22:23:08,308 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 158 transitions. [2021-08-12 22:23:08,308 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 158 transitions. [2021-08-12 22:23:08,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:23:08,308 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 158 transitions. [2021-08-12 22:23:08,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 19.75) internal successors, (158), 8 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:23:08,308 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:23:08,308 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:23:08,308 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 741 predicate places. [2021-08-12 22:23:08,309 INFO L482 AbstractCegarLoop]: Abstraction has has 768 places, 1191 transitions, 256238 flow [2021-08-12 22:23:08,309 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:23:08,309 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:23:08,309 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:23:08,309 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2021-08-12 22:23:08,309 INFO L430 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:23:08,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:23:08,309 INFO L82 PathProgramCache]: Analyzing trace with hash 2098639866, now seen corresponding path program 88 times [2021-08-12 22:23:08,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:23:08,309 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320618851] [2021-08-12 22:23:08,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:23:08,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:23:08,320 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:08,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:08,321 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:08,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-12 22:23:08,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:08,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:23:08,328 INFO L142 QuantifierPusher]: treesize reduction 3, result has 72.7 percent of original size [2021-08-12 22:23:08,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-08-12 22:23:08,334 INFO L142 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size [2021-08-12 22:23:08,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:23:08,342 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:08,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:23:08,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:08,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:23:08,356 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:08,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:08,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:23:08,356 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:23:08,356 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320618851] [2021-08-12 22:23:08,356 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320618851] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:23:08,356 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:23:08,357 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-12 22:23:08,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146834559] [2021-08-12 22:23:08,357 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 22:23:08,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:23:08,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 22:23:08,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-08-12 22:23:08,357 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 28 [2021-08-12 22:23:08,357 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 768 places, 1191 transitions, 256238 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:23:08,357 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:23:08,358 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 28 [2021-08-12 22:23:08,358 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:23:11,528 INFO L129 PetriNetUnfolder]: 933/3010 cut-off events. [2021-08-12 22:23:11,528 INFO L130 PetriNetUnfolder]: For 610256/630935 co-relation queries the response was YES. [2021-08-12 22:23:11,537 INFO L84 FinitePrefix]: Finished finitePrefix Result has 197273 conditions, 3010 events. 933/3010 cut-off events. For 610256/630935 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 31279 event pairs, 0 based on Foata normal form. 3/2236 useless extension candidates. Maximal degree in co-relation 189920. Up to 1668 conditions per place. [2021-08-12 22:23:11,593 INFO L132 encePairwiseOnDemand]: 18/28 looper letters, 716 selfloop transitions, 207 changer transitions 257/1190 dead transitions. [2021-08-12 22:23:11,593 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 775 places, 1190 transitions, 258374 flow [2021-08-12 22:23:11,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 22:23:11,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-12 22:23:11,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2021-08-12 22:23:11,594 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7008928571428571 [2021-08-12 22:23:11,594 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 157 transitions. [2021-08-12 22:23:11,594 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 157 transitions. [2021-08-12 22:23:11,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:23:11,594 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 157 transitions. [2021-08-12 22:23:11,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 19.625) internal successors, (157), 8 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:23:11,594 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:23:11,594 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:23:11,594 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 748 predicate places. [2021-08-12 22:23:11,594 INFO L482 AbstractCegarLoop]: Abstraction has has 775 places, 1190 transitions, 258374 flow [2021-08-12 22:23:11,594 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:23:11,594 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:23:11,595 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:23:11,595 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2021-08-12 22:23:11,595 INFO L430 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:23:11,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:23:11,595 INFO L82 PathProgramCache]: Analyzing trace with hash -396406064, now seen corresponding path program 89 times [2021-08-12 22:23:11,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:23:11,595 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927614918] [2021-08-12 22:23:11,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:23:11,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:23:11,608 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:11,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:11,609 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:11,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-12 22:23:11,611 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:11,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:23:11,616 INFO L142 QuantifierPusher]: treesize reduction 5, result has 61.5 percent of original size [2021-08-12 22:23:11,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-08-12 22:23:11,623 INFO L142 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size [2021-08-12 22:23:11,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:23:11,631 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:11,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 22:23:11,638 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:11,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:23:11,643 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:11,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:11,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:23:11,643 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:23:11,643 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927614918] [2021-08-12 22:23:11,643 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927614918] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:23:11,643 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:23:11,643 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-12 22:23:11,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314792596] [2021-08-12 22:23:11,643 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 22:23:11,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:23:11,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 22:23:11,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-08-12 22:23:11,644 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 28 [2021-08-12 22:23:11,644 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 775 places, 1190 transitions, 258374 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:23:11,644 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:23:11,644 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 28 [2021-08-12 22:23:11,644 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:23:15,081 INFO L129 PetriNetUnfolder]: 933/2987 cut-off events. [2021-08-12 22:23:15,081 INFO L130 PetriNetUnfolder]: For 615945/636984 co-relation queries the response was YES. [2021-08-12 22:23:15,090 INFO L84 FinitePrefix]: Finished finitePrefix Result has 198912 conditions, 2987 events. 933/2987 cut-off events. For 615945/636984 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 30977 event pairs, 0 based on Foata normal form. 3/2213 useless extension candidates. Maximal degree in co-relation 191613. Up to 1667 conditions per place. [2021-08-12 22:23:15,145 INFO L132 encePairwiseOnDemand]: 18/28 looper letters, 706 selfloop transitions, 215 changer transitions 258/1189 dead transitions. [2021-08-12 22:23:15,146 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 782 places, 1189 transitions, 260506 flow [2021-08-12 22:23:15,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 22:23:15,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-12 22:23:15,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2021-08-12 22:23:15,146 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7008928571428571 [2021-08-12 22:23:15,146 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 157 transitions. [2021-08-12 22:23:15,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 157 transitions. [2021-08-12 22:23:15,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:23:15,146 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 157 transitions. [2021-08-12 22:23:15,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 19.625) internal successors, (157), 8 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:23:15,147 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:23:15,147 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:23:15,147 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 755 predicate places. [2021-08-12 22:23:15,147 INFO L482 AbstractCegarLoop]: Abstraction has has 782 places, 1189 transitions, 260506 flow [2021-08-12 22:23:15,147 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:23:15,147 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:23:15,147 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:23:15,147 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2021-08-12 22:23:15,147 INFO L430 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:23:15,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:23:15,148 INFO L82 PathProgramCache]: Analyzing trace with hash 1371001178, now seen corresponding path program 90 times [2021-08-12 22:23:15,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:23:15,148 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243046627] [2021-08-12 22:23:15,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:23:15,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:23:15,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:15,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:15,160 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:15,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-12 22:23:15,163 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:15,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:23:15,168 INFO L142 QuantifierPusher]: treesize reduction 5, result has 61.5 percent of original size [2021-08-12 22:23:15,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-08-12 22:23:15,174 INFO L142 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size [2021-08-12 22:23:15,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:23:15,183 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:15,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:23:15,190 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:15,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:23:15,195 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:15,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:15,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:23:15,196 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:23:15,196 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243046627] [2021-08-12 22:23:15,196 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243046627] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:23:15,196 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:23:15,196 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-12 22:23:15,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372161320] [2021-08-12 22:23:15,199 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 22:23:15,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:23:15,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 22:23:15,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-12 22:23:15,199 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 28 [2021-08-12 22:23:15,199 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 782 places, 1189 transitions, 260506 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:23:15,199 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:23:15,200 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 28 [2021-08-12 22:23:15,200 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:23:18,533 INFO L129 PetriNetUnfolder]: 933/2985 cut-off events. [2021-08-12 22:23:18,533 INFO L130 PetriNetUnfolder]: For 621321/642720 co-relation queries the response was YES. [2021-08-12 22:23:18,542 INFO L84 FinitePrefix]: Finished finitePrefix Result has 200584 conditions, 2985 events. 933/2985 cut-off events. For 621321/642720 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 30936 event pairs, 0 based on Foata normal form. 3/2211 useless extension candidates. Maximal degree in co-relation 193341. Up to 1666 conditions per place. [2021-08-12 22:23:18,598 INFO L132 encePairwiseOnDemand]: 18/28 looper letters, 705 selfloop transitions, 214 changer transitions 259/1188 dead transitions. [2021-08-12 22:23:18,598 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 789 places, 1188 transitions, 262634 flow [2021-08-12 22:23:18,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 22:23:18,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-12 22:23:18,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2021-08-12 22:23:18,599 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.6964285714285714 [2021-08-12 22:23:18,599 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 156 transitions. [2021-08-12 22:23:18,599 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 156 transitions. [2021-08-12 22:23:18,599 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:23:18,599 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 156 transitions. [2021-08-12 22:23:18,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 19.5) internal successors, (156), 8 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:23:18,599 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:23:18,600 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:23:18,600 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 762 predicate places. [2021-08-12 22:23:18,600 INFO L482 AbstractCegarLoop]: Abstraction has has 789 places, 1188 transitions, 262634 flow [2021-08-12 22:23:18,600 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:23:18,600 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:23:18,600 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:23:18,600 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2021-08-12 22:23:18,600 INFO L430 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:23:18,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:23:18,600 INFO L82 PathProgramCache]: Analyzing trace with hash -2041279223, now seen corresponding path program 1 times [2021-08-12 22:23:18,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:23:18,600 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904084865] [2021-08-12 22:23:18,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:23:18,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:23:18,774 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:18,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:18,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:18,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:18,778 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:18,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:18,781 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:18,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-08-12 22:23:18,787 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:18,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-12 22:23:18,794 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:18,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-12 22:23:18,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:18,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 22:23:18,810 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:18,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:18,811 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:23:18,811 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:23:18,811 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904084865] [2021-08-12 22:23:18,811 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904084865] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-12 22:23:18,811 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280498433] [2021-08-12 22:23:18,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-12 22:23:18,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:23:18,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-12 22:23:18,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-12 22:23:18,888 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:18,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:18,888 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:18,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:18,889 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:18,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:18,890 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:18,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:18,890 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:18,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:18,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:18,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:18,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:18,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:18,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:18,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:18,894 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:18,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-12 22:23:18,905 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:18,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:23:18,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-12 22:23:18,907 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:18,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-12 22:23:18,909 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:18,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:23:18,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-12 22:23:18,910 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:18,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:23:18,917 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:18,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:23:18,928 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:18,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:23:18,928 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:18,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:23:18,929 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:18,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:23:18,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:18,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:23:18,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:18,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:23:18,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:18,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:23:18,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:18,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:23:18,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:18,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:23:18,933 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:18,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-12 22:23:18,934 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:18,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-12 22:23:18,934 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:18,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-12 22:23:18,941 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:18,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-12 22:23:18,971 INFO L142 QuantifierPusher]: treesize reduction 3, result has 86.4 percent of original size [2021-08-12 22:23:18,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-12 22:23:18,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:18,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-12 22:23:18,973 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:18,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-12 22:23:18,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-12 22:23:18,975 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:18,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-12 22:23:18,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:18,993 INFO L732 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-08-12 22:23:18,997 INFO L739 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:18,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-12 22:23:18,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:18,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:23:19,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:23:19,001 INFO L732 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-08-12 22:23:19,002 INFO L739 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:19,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-12 22:23:19,003 INFO L142 QuantifierPusher]: treesize reduction 9, result has 47.1 percent of original size [2021-08-12 22:23:19,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:19,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:23:19,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:19,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:23:19,030 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:19,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:23:19,031 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:19,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:23:19,031 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:19,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:23:19,032 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:19,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:23:19,033 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:19,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 22:23:19,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:19,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 22:23:19,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:19,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 22:23:19,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:19,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 22:23:19,061 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:19,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-12 22:23:19,062 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:19,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-12 22:23:19,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-12 22:23:19,064 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:19,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-12 22:23:19,072 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:19,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-12 22:23:19,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-12 22:23:19,074 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:19,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:19,076 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:19,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:19,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:19,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:19,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:19,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:19,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:19,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:19,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:19,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:19,088 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:19,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:19,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:19,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:19,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:19,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:19,090 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:19,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:19,090 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:19,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:19,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:19,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:19,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:19,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:19,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:19,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:19,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:19,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:19,093 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:19,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:19,093 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:19,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:19,094 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:19,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:19,094 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:19,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:19,095 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:19,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:19,096 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:19,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:19,096 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:19,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:19,097 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:19,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:19,097 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:19,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:19,098 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:19,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:19,098 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:19,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:19,100 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:19,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:19,101 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:19,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:19,101 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:19,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:19,102 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:19,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:19,104 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:23:19,104 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [280498433] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-12 22:23:19,105 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-12 22:23:19,105 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-08-12 22:23:19,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931103128] [2021-08-12 22:23:19,105 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-08-12 22:23:19,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:23:19,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-08-12 22:23:19,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-08-12 22:23:19,106 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 28 [2021-08-12 22:23:19,106 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 789 places, 1188 transitions, 262634 flow. Second operand has 13 states, 13 states have (on average 16.153846153846153) internal successors, (210), 13 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:23:19,106 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:23:19,106 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 28 [2021-08-12 22:23:19,107 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:23:24,635 INFO L129 PetriNetUnfolder]: 1033/3263 cut-off events. [2021-08-12 22:23:24,636 INFO L130 PetriNetUnfolder]: For 703328/725019 co-relation queries the response was YES. [2021-08-12 22:23:24,652 INFO L84 FinitePrefix]: Finished finitePrefix Result has 221211 conditions, 3263 events. 1033/3263 cut-off events. For 703328/725019 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 34085 event pairs, 0 based on Foata normal form. 23/2443 useless extension candidates. Maximal degree in co-relation 212836. Up to 1835 conditions per place. [2021-08-12 22:23:24,835 INFO L132 encePairwiseOnDemand]: 19/28 looper letters, 856 selfloop transitions, 153 changer transitions 262/1281 dead transitions. [2021-08-12 22:23:24,835 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 796 places, 1281 transitions, 285568 flow [2021-08-12 22:23:24,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 22:23:24,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-12 22:23:24,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 171 transitions. [2021-08-12 22:23:24,836 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7633928571428571 [2021-08-12 22:23:24,836 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 171 transitions. [2021-08-12 22:23:24,836 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 171 transitions. [2021-08-12 22:23:24,836 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:23:24,836 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 171 transitions. [2021-08-12 22:23:24,837 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 21.375) internal successors, (171), 8 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:23:24,837 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:23:24,837 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:23:24,838 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 769 predicate places. [2021-08-12 22:23:24,838 INFO L482 AbstractCegarLoop]: Abstraction has has 796 places, 1281 transitions, 285568 flow [2021-08-12 22:23:24,838 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 16.153846153846153) internal successors, (210), 13 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:23:24,838 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:23:24,839 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:23:25,052 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2021-08-12 22:23:25,053 INFO L430 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:23:25,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:23:25,053 INFO L82 PathProgramCache]: Analyzing trace with hash -1069025888, now seen corresponding path program 1 times [2021-08-12 22:23:25,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:23:25,053 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175091326] [2021-08-12 22:23:25,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:23:25,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:23:25,074 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:25,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:25,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:25,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-08-12 22:23:25,080 INFO L142 QuantifierPusher]: treesize reduction 5, result has 72.2 percent of original size [2021-08-12 22:23:25,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-12 22:23:25,089 INFO L142 QuantifierPusher]: treesize reduction 5, result has 72.2 percent of original size [2021-08-12 22:23:25,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-12 22:23:25,099 INFO L142 QuantifierPusher]: treesize reduction 5, result has 68.8 percent of original size [2021-08-12 22:23:25,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-12 22:23:25,107 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:25,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:23:25,114 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:25,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:25,114 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:23:25,115 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:23:25,115 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175091326] [2021-08-12 22:23:25,115 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175091326] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-12 22:23:25,115 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250675062] [2021-08-12 22:23:25,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-12 22:23:25,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:23:25,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-12 22:23:25,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-12 22:23:25,165 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:25,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:25,166 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:25,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:25,166 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:25,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:25,167 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:25,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:25,167 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:25,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-08-12 22:23:25,169 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:25,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-08-12 22:23:25,169 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:25,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-08-12 22:23:25,170 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:25,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-08-12 22:23:25,171 INFO L142 QuantifierPusher]: treesize reduction 3, result has 89.3 percent of original size [2021-08-12 22:23:25,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-12 22:23:25,173 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:25,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-12 22:23:25,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-08-12 22:23:25,174 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:25,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-12 22:23:25,179 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:25,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-08-12 22:23:25,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-12 22:23:25,181 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:25,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-12 22:23:25,184 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:25,185 INFO L732 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-08-12 22:23:25,186 INFO L739 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:25,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-12 22:23:25,187 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:25,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 22:23:25,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 22:23:25,191 INFO L732 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-08-12 22:23:25,193 INFO L739 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:25,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-12 22:23:25,194 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:25,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 22:23:25,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 22:23:25,196 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:25,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 22:23:25,209 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:25,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 22:23:25,210 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:25,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 22:23:25,210 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:25,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 22:23:25,211 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:25,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 22:23:25,212 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:25,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-12 22:23:25,213 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:25,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-12 22:23:25,214 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:25,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-12 22:23:25,214 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:25,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-12 22:23:25,226 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:25,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-12 22:23:25,227 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:25,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-12 22:23:25,228 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:25,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-12 22:23:25,228 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:25,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-12 22:23:25,229 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:25,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-12 22:23:25,230 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:25,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-12 22:23:25,231 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:25,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-12 22:23:25,231 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:25,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-12 22:23:25,232 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:25,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-12 22:23:25,233 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:25,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:23:25,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-08-12 22:23:25,234 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:25,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-12 22:23:25,235 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:25,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-12 22:23:25,238 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:25,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:23:25,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-08-12 22:23:25,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-12 22:23:25,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:25,244 INFO L732 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-08-12 22:23:25,247 INFO L739 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:25,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-12 22:23:25,247 INFO L142 QuantifierPusher]: treesize reduction 9, result has 52.6 percent of original size [2021-08-12 22:23:25,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:25,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:25,249 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:25,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:25,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:25,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:23:25,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:25,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:23:25,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:25,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:23:25,257 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:25,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:23:25,257 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:25,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:23:25,260 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:25,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:23:25,261 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:25,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:23:25,261 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:25,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:23:25,262 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:25,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:23:25,262 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:25,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:23:25,263 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:25,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:23:25,263 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:25,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:23:25,264 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:25,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:23:25,265 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:25,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:23:25,265 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:25,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:23:25,266 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:25,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:23:25,266 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:25,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:23:25,267 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:25,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:23:25,267 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:25,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:23:25,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:25,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:23:25,269 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:25,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:23:25,269 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:25,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:23:25,270 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:25,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:23:25,270 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:25,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:23:25,271 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:25,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:23:25,271 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:25,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:23:25,271 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:25,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:23:25,272 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:25,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:23:25,273 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:25,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:23:25,273 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:25,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:23:25,273 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:25,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:23:25,274 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:25,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 22:23:25,275 INFO L142 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size [2021-08-12 22:23:25,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:25,275 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:25,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:25,276 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:25,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:25,276 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:25,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:25,277 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:23:25,277 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1250675062] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-12 22:23:25,277 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-12 22:23:25,277 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 9 [2021-08-12 22:23:25,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013895976] [2021-08-12 22:23:25,277 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-12 22:23:25,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:23:25,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-12 22:23:25,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-08-12 22:23:25,278 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 28 [2021-08-12 22:23:25,278 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 796 places, 1281 transitions, 285568 flow. Second operand has 9 states, 9 states have (on average 18.22222222222222) internal successors, (164), 9 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:23:25,278 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:23:25,278 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 28 [2021-08-12 22:23:25,278 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:23:30,003 INFO L129 PetriNetUnfolder]: 1059/3336 cut-off events. [2021-08-12 22:23:30,003 INFO L130 PetriNetUnfolder]: For 665952/670575 co-relation queries the response was YES. [2021-08-12 22:23:30,014 INFO L84 FinitePrefix]: Finished finitePrefix Result has 229178 conditions, 3336 events. 1059/3336 cut-off events. For 665952/670575 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 35114 event pairs, 0 based on Foata normal form. 15/2494 useless extension candidates. Maximal degree in co-relation 221071. Up to 1890 conditions per place. [2021-08-12 22:23:30,129 INFO L132 encePairwiseOnDemand]: 22/28 looper letters, 743 selfloop transitions, 191 changer transitions 337/1314 dead transitions. [2021-08-12 22:23:30,129 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 801 places, 1314 transitions, 295234 flow [2021-08-12 22:23:30,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-12 22:23:30,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-08-12 22:23:30,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 135 transitions. [2021-08-12 22:23:30,130 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8035714285714286 [2021-08-12 22:23:30,130 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 135 transitions. [2021-08-12 22:23:30,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 135 transitions. [2021-08-12 22:23:30,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:23:30,130 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 135 transitions. [2021-08-12 22:23:30,130 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:23:30,131 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 28.0) internal successors, (196), 7 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:23:30,131 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 28.0) internal successors, (196), 7 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:23:30,131 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 774 predicate places. [2021-08-12 22:23:30,131 INFO L482 AbstractCegarLoop]: Abstraction has has 801 places, 1314 transitions, 295234 flow [2021-08-12 22:23:30,131 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 18.22222222222222) internal successors, (164), 9 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:23:30,131 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:23:30,131 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:23:30,343 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2021-08-12 22:23:30,343 INFO L430 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:23:30,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:23:30,343 INFO L82 PathProgramCache]: Analyzing trace with hash -614391039, now seen corresponding path program 1 times [2021-08-12 22:23:30,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:23:30,344 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612554827] [2021-08-12 22:23:30,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:23:30,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:23:30,353 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:30,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:30,354 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:30,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-08-12 22:23:30,359 INFO L142 QuantifierPusher]: treesize reduction 5, result has 72.2 percent of original size [2021-08-12 22:23:30,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-12 22:23:30,368 INFO L142 QuantifierPusher]: treesize reduction 5, result has 76.2 percent of original size [2021-08-12 22:23:30,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-08-12 22:23:30,379 INFO L142 QuantifierPusher]: treesize reduction 5, result has 76.2 percent of original size [2021-08-12 22:23:30,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-08-12 22:23:30,392 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.0 percent of original size [2021-08-12 22:23:30,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-08-12 22:23:30,406 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:30,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-12 22:23:30,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:30,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-12 22:23:30,428 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:30,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:30,429 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:23:30,429 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:23:30,429 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612554827] [2021-08-12 22:23:30,429 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612554827] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-12 22:23:30,430 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907125303] [2021-08-12 22:23:30,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-12 22:23:30,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:23:30,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-12 22:23:30,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-12 22:23:30,479 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:30,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:30,479 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:30,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:30,480 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:30,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:30,480 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:30,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:30,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:30,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-08-12 22:23:30,482 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:30,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-08-12 22:23:30,482 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:30,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-08-12 22:23:30,483 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:30,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-08-12 22:23:30,484 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-08-12 22:23:30,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-12 22:23:30,486 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:30,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-12 22:23:30,487 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:30,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-12 22:23:30,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-12 22:23:30,488 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:30,488 INFO L732 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-08-12 22:23:30,492 INFO L739 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:30,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-12 22:23:30,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:30,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:23:30,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:23:30,494 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:30,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:23:30,504 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:30,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:23:30,505 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:30,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:23:30,506 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:30,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:23:30,506 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:30,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:23:30,507 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:30,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:23:30,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:30,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:23:30,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:30,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:23:30,509 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:30,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:23:30,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:30,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:23:30,524 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:30,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:23:30,525 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:30,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:23:30,525 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:30,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:23:30,526 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:30,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-12 22:23:30,527 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:30,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-12 22:23:30,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:30,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-12 22:23:30,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:30,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-12 22:23:30,548 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:30,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-12 22:23:30,550 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:30,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:23:30,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-12 22:23:30,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:30,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-12 22:23:30,554 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:30,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-12 22:23:30,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-12 22:23:30,555 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:30,557 INFO L732 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-08-12 22:23:30,561 INFO L739 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:30,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-12 22:23:30,561 INFO L142 QuantifierPusher]: treesize reduction 9, result has 47.1 percent of original size [2021-08-12 22:23:30,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:30,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 22:23:30,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:30,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 22:23:30,577 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:30,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 22:23:30,577 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:30,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 22:23:30,578 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:30,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 22:23:30,579 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:30,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 22:23:30,580 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:30,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-12 22:23:30,581 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:30,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-12 22:23:30,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-12 22:23:30,584 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:30,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-12 22:23:30,594 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:30,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-12 22:23:30,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-12 22:23:30,595 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:30,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:30,596 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:30,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:30,606 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:30,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:30,607 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:30,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:30,607 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:30,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:30,608 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:30,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:30,608 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:30,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:30,609 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:30,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:30,609 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:30,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:30,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:30,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:30,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:30,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:30,611 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:30,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:30,611 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:30,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:30,612 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:30,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:30,613 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:30,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:30,613 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:30,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:30,614 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:30,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:30,614 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:30,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:30,615 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:30,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:30,616 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:30,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:30,616 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:30,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:30,617 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:30,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:30,617 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:30,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:30,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:30,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:30,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:30,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:30,619 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:30,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:30,620 INFO L142 QuantifierPusher]: treesize reduction 6, result has 14.3 percent of original size [2021-08-12 22:23:30,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:30,620 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:30,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:30,621 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:30,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:30,621 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:30,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:30,622 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:23:30,623 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907125303] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-12 22:23:30,623 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-12 22:23:30,624 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2021-08-12 22:23:30,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369665612] [2021-08-12 22:23:30,624 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-08-12 22:23:30,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:23:30,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-08-12 22:23:30,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-08-12 22:23:30,625 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 28 [2021-08-12 22:23:30,625 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 801 places, 1314 transitions, 295234 flow. Second operand has 14 states, 14 states have (on average 16.071428571428573) internal successors, (225), 14 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:23:30,625 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:23:30,625 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 28 [2021-08-12 22:23:30,625 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:23:35,415 INFO L129 PetriNetUnfolder]: 1063/3348 cut-off events. [2021-08-12 22:23:35,415 INFO L130 PetriNetUnfolder]: For 698122/710457 co-relation queries the response was YES. [2021-08-12 22:23:35,426 INFO L84 FinitePrefix]: Finished finitePrefix Result has 232396 conditions, 3348 events. 1063/3348 cut-off events. For 698122/710457 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 35205 event pairs, 0 based on Foata normal form. 23/2517 useless extension candidates. Maximal degree in co-relation 224101. Up to 1901 conditions per place. [2021-08-12 22:23:35,516 INFO L132 encePairwiseOnDemand]: 19/28 looper letters, 774 selfloop transitions, 195 changer transitions 344/1323 dead transitions. [2021-08-12 22:23:35,516 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 808 places, 1323 transitions, 299824 flow [2021-08-12 22:23:35,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 22:23:35,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-12 22:23:35,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 167 transitions. [2021-08-12 22:23:35,517 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7455357142857143 [2021-08-12 22:23:35,517 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 167 transitions. [2021-08-12 22:23:35,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 167 transitions. [2021-08-12 22:23:35,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:23:35,517 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 167 transitions. [2021-08-12 22:23:35,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 20.875) internal successors, (167), 8 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:23:35,518 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:23:35,518 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:23:35,518 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 781 predicate places. [2021-08-12 22:23:35,518 INFO L482 AbstractCegarLoop]: Abstraction has has 808 places, 1323 transitions, 299824 flow [2021-08-12 22:23:35,518 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 16.071428571428573) internal successors, (225), 14 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:23:35,518 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:23:35,518 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:23:35,742 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable129 [2021-08-12 22:23:35,742 INFO L430 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:23:35,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:23:35,742 INFO L82 PathProgramCache]: Analyzing trace with hash -451155559, now seen corresponding path program 2 times [2021-08-12 22:23:35,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:23:35,743 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667704970] [2021-08-12 22:23:35,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:23:35,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:23:35,751 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:35,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:35,751 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:35,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-08-12 22:23:35,865 INFO L142 QuantifierPusher]: treesize reduction 5, result has 72.2 percent of original size [2021-08-12 22:23:35,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-12 22:23:35,873 INFO L142 QuantifierPusher]: treesize reduction 5, result has 76.2 percent of original size [2021-08-12 22:23:35,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-08-12 22:23:35,888 INFO L142 QuantifierPusher]: treesize reduction 5, result has 76.2 percent of original size [2021-08-12 22:23:35,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-08-12 22:23:35,902 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:35,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-12 22:23:35,909 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:35,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-12 22:23:35,917 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:35,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:35,917 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:23:35,918 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:23:35,918 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667704970] [2021-08-12 22:23:35,918 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667704970] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-12 22:23:35,919 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390500061] [2021-08-12 22:23:35,919 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-12 22:23:35,961 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-12 22:23:35,961 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-12 22:23:35,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-12 22:23:35,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-12 22:23:35,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:35,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:35,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:35,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:35,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:35,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:35,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:35,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:35,966 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:35,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:35,966 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:35,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:35,967 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:35,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:35,967 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:35,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:35,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:35,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:35,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:35,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:35,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:35,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:35,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:35,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:35,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:35,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:35,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:35,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:35,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:35,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:35,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:35,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:35,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:35,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-08-12 22:23:35,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:35,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-08-12 22:23:35,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:35,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-08-12 22:23:35,975 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:35,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-08-12 22:23:35,983 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:35,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-08-12 22:23:35,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:35,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-08-12 22:23:35,985 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:35,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-08-12 22:23:35,985 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:35,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-08-12 22:23:35,986 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:35,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 22:23:35,986 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:35,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 22:23:35,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:35,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 22:23:35,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:35,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 22:23:35,998 INFO L142 QuantifierPusher]: treesize reduction 3, result has 90.3 percent of original size [2021-08-12 22:23:36,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-12 22:23:36,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:36,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-12 22:23:36,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-08-12 22:23:36,002 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:36,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-12 22:23:36,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:36,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-08-12 22:23:36,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-12 22:23:36,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:36,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-12 22:23:36,007 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:36,009 INFO L732 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-08-12 22:23:36,010 INFO L739 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:36,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-12 22:23:36,010 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:36,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 22:23:36,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 22:23:36,018 INFO L732 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-08-12 22:23:36,019 INFO L739 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:36,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-12 22:23:36,020 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:36,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 22:23:36,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-12 22:23:36,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:36,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-12 22:23:36,036 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:36,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-12 22:23:36,037 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:36,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:23:36,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-08-12 22:23:36,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:36,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-12 22:23:36,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:36,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-12 22:23:36,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:36,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:23:36,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-08-12 22:23:36,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-12 22:23:36,043 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:36,044 INFO L732 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-08-12 22:23:36,045 INFO L739 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:36,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-12 22:23:36,046 INFO L142 QuantifierPusher]: treesize reduction 9, result has 52.6 percent of original size [2021-08-12 22:23:36,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:36,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:36,047 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:36,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:36,056 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:36,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:36,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:36,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:36,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:36,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:36,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:36,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:36,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:36,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:36,059 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:36,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:36,059 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:36,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:36,059 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:36,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:36,060 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:36,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:36,060 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:36,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:36,061 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:36,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:36,061 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:36,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:36,062 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:36,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:36,062 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:36,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:36,063 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:36,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:36,063 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:36,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:36,064 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:36,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:36,064 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:36,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:36,065 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:36,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:36,065 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:36,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:36,065 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:36,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:36,066 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:36,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:36,066 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:36,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:36,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:36,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:36,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:36,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:36,068 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:36,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:36,068 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:36,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:36,069 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:36,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:36,069 INFO L142 QuantifierPusher]: treesize reduction 6, result has 14.3 percent of original size [2021-08-12 22:23:36,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:36,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:36,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:36,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:36,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:36,071 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:36,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:36,071 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:23:36,071 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [390500061] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-12 22:23:36,072 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-12 22:23:36,072 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 12 [2021-08-12 22:23:36,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683247660] [2021-08-12 22:23:36,072 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-08-12 22:23:36,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:23:36,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-12 22:23:36,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-08-12 22:23:36,073 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 28 [2021-08-12 22:23:36,073 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 808 places, 1323 transitions, 299824 flow. Second operand has 12 states, 12 states have (on average 16.333333333333332) internal successors, (196), 12 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:23:36,073 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:23:36,073 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 28 [2021-08-12 22:23:36,073 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:23:42,233 INFO L129 PetriNetUnfolder]: 1223/3870 cut-off events. [2021-08-12 22:23:42,234 INFO L130 PetriNetUnfolder]: For 903861/915690 co-relation queries the response was YES. [2021-08-12 22:23:42,245 INFO L84 FinitePrefix]: Finished finitePrefix Result has 270139 conditions, 3870 events. 1223/3870 cut-off events. For 903861/915690 co-relation queries the response was YES. Maximal size of possible extension queue 512. Compared 41837 event pairs, 0 based on Foata normal form. 39/2907 useless extension candidates. Maximal degree in co-relation 259316. Up to 2213 conditions per place. [2021-08-12 22:23:42,319 INFO L132 encePairwiseOnDemand]: 19/28 looper letters, 717 selfloop transitions, 364 changer transitions 434/1525 dead transitions. [2021-08-12 22:23:42,319 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 824 places, 1525 transitions, 348352 flow [2021-08-12 22:23:42,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-12 22:23:42,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-08-12 22:23:42,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 355 transitions. [2021-08-12 22:23:42,320 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7457983193277311 [2021-08-12 22:23:42,320 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 355 transitions. [2021-08-12 22:23:42,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 355 transitions. [2021-08-12 22:23:42,320 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:23:42,320 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 355 transitions. [2021-08-12 22:23:42,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 20.88235294117647) internal successors, (355), 17 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:23:42,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 28.0) internal successors, (504), 18 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:23:42,321 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 28.0) internal successors, (504), 18 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:23:42,321 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 797 predicate places. [2021-08-12 22:23:42,322 INFO L482 AbstractCegarLoop]: Abstraction has has 824 places, 1525 transitions, 348352 flow [2021-08-12 22:23:42,322 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 16.333333333333332) internal successors, (196), 12 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:23:42,322 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:23:42,322 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:23:42,524 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-12 22:23:42,526 INFO L430 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:23:42,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:23:42,527 INFO L82 PathProgramCache]: Analyzing trace with hash 1868263359, now seen corresponding path program 2 times [2021-08-12 22:23:42,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:23:42,527 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320928085] [2021-08-12 22:23:42,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:23:42,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:23:42,536 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:42,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:42,537 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:42,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:42,539 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:42,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:42,543 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:42,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-08-12 22:23:42,549 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:42,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:42,554 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:42,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:42,554 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:23:42,554 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:23:42,554 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320928085] [2021-08-12 22:23:42,554 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320928085] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-12 22:23:42,554 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899259799] [2021-08-12 22:23:42,555 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-12 22:23:42,593 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-12 22:23:42,593 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-12 22:23:42,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-12 22:23:42,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-12 22:23:42,596 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:42,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:42,596 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:42,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:42,597 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:42,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:42,597 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:42,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:42,598 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:42,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:42,598 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:42,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:42,598 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:42,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:42,599 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:42,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:42,599 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:42,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:42,600 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:42,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:42,600 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:42,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:42,600 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:42,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:42,601 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:42,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:42,601 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:42,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:42,602 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:42,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:42,602 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:42,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:42,603 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:42,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-12 22:23:42,603 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:42,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:23:42,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-08-12 22:23:42,604 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:42,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-12 22:23:42,605 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:42,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:23:42,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-08-12 22:23:42,606 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:42,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:42,606 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:42,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:42,609 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:42,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:42,609 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:42,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:42,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:42,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:42,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:42,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:42,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:42,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:42,611 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:42,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:42,611 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:42,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:42,612 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:42,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:42,612 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:42,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 22:23:42,613 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:42,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 22:23:42,613 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:42,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 22:23:42,614 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:42,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 22:23:42,623 INFO L142 QuantifierPusher]: treesize reduction 3, result has 90.3 percent of original size [2021-08-12 22:23:42,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-12 22:23:42,624 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:42,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-12 22:23:42,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-08-12 22:23:42,625 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:42,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-12 22:23:42,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:42,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-12 22:23:42,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-08-12 22:23:42,630 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:42,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-12 22:23:42,632 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:42,633 INFO L732 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-08-12 22:23:42,637 INFO L739 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:42,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-12 22:23:42,637 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:42,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 22:23:42,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 22:23:42,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-12 22:23:42,640 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:42,641 INFO L732 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-08-12 22:23:42,642 INFO L739 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:42,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-12 22:23:42,642 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:42,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:23:42,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:23:42,645 INFO L732 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-08-12 22:23:42,646 INFO L739 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:42,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-12 22:23:42,646 INFO L142 QuantifierPusher]: treesize reduction 9, result has 47.1 percent of original size [2021-08-12 22:23:42,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:42,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:42,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:42,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:42,648 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:42,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:42,648 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:42,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:42,649 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:42,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:42,649 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:42,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:42,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:42,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:42,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:42,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:42,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:42,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:42,651 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:42,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:42,651 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:42,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:42,652 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:42,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:42,652 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:42,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:42,653 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:42,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:42,654 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:42,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:42,654 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:42,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:42,655 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:42,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:42,655 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:42,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:42,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:42,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:42,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:42,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:42,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:42,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:42,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:42,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:42,658 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:42,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:42,658 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:42,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:42,658 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:42,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:42,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:42,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:42,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:42,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:42,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:42,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:42,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:42,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:42,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:42,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:42,662 INFO L142 QuantifierPusher]: treesize reduction 7, result has 12.5 percent of original size [2021-08-12 22:23:42,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:42,662 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:42,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:42,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:42,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:42,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:42,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:42,665 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:23:42,666 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [899259799] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-12 22:23:42,666 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-12 22:23:42,666 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2021-08-12 22:23:42,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020596323] [2021-08-12 22:23:42,666 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-12 22:23:42,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:23:42,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-12 22:23:42,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-08-12 22:23:42,667 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 28 [2021-08-12 22:23:42,667 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 824 places, 1525 transitions, 348352 flow. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:23:42,667 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:23:42,667 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 28 [2021-08-12 22:23:42,667 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:23:48,437 INFO L129 PetriNetUnfolder]: 1291/4054 cut-off events. [2021-08-12 22:23:48,437 INFO L130 PetriNetUnfolder]: For 924415/937144 co-relation queries the response was YES. [2021-08-12 22:23:48,449 INFO L84 FinitePrefix]: Finished finitePrefix Result has 284385 conditions, 4054 events. 1291/4054 cut-off events. For 924415/937144 co-relation queries the response was YES. Maximal size of possible extension queue 539. Compared 43981 event pairs, 0 based on Foata normal form. 34/3036 useless extension candidates. Maximal degree in co-relation 273702. Up to 2323 conditions per place. [2021-08-12 22:23:48,522 INFO L132 encePairwiseOnDemand]: 22/28 looper letters, 667 selfloop transitions, 156 changer transitions 479/1573 dead transitions. [2021-08-12 22:23:48,522 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 829 places, 1573 transitions, 361432 flow [2021-08-12 22:23:48,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-12 22:23:48,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-08-12 22:23:48,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 140 transitions. [2021-08-12 22:23:48,523 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8333333333333334 [2021-08-12 22:23:48,523 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 140 transitions. [2021-08-12 22:23:48,523 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 140 transitions. [2021-08-12 22:23:48,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:23:48,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 140 transitions. [2021-08-12 22:23:48,524 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 23.333333333333332) internal successors, (140), 6 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:23:48,524 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 28.0) internal successors, (196), 7 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:23:48,524 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 28.0) internal successors, (196), 7 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:23:48,524 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 802 predicate places. [2021-08-12 22:23:48,524 INFO L482 AbstractCegarLoop]: Abstraction has has 829 places, 1573 transitions, 361432 flow [2021-08-12 22:23:48,524 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:23:48,524 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:23:48,524 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:23:48,725 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable136 [2021-08-12 22:23:48,726 INFO L430 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:23:48,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:23:48,726 INFO L82 PathProgramCache]: Analyzing trace with hash 647743499, now seen corresponding path program 3 times [2021-08-12 22:23:48,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:23:48,726 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881733203] [2021-08-12 22:23:48,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:23:48,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:23:48,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:48,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:48,738 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:48,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-08-12 22:23:48,742 INFO L142 QuantifierPusher]: treesize reduction 5, result has 72.2 percent of original size [2021-08-12 22:23:48,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-12 22:23:48,750 INFO L142 QuantifierPusher]: treesize reduction 5, result has 76.2 percent of original size [2021-08-12 22:23:48,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-08-12 22:23:48,761 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:48,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-12 22:23:48,769 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:48,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-12 22:23:48,777 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:48,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-12 22:23:48,786 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:48,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:48,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:23:48,787 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:23:48,787 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881733203] [2021-08-12 22:23:48,787 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881733203] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-12 22:23:48,787 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [611540801] [2021-08-12 22:23:48,787 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-12 22:23:48,842 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-08-12 22:23:48,843 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-12 22:23:48,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-12 22:23:48,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-12 22:23:48,844 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:48,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:48,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:48,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:48,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:48,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:48,846 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:48,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:48,846 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:48,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:48,847 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:48,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:48,847 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:48,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:48,848 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:48,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:48,848 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:48,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:48,849 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:48,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:48,849 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:48,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:48,850 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:48,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:48,850 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:48,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:48,851 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:48,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:48,851 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:48,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:48,852 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:48,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:48,852 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:48,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-08-12 22:23:48,853 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:48,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-08-12 22:23:48,853 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:48,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-08-12 22:23:48,854 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:48,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-08-12 22:23:48,864 INFO L142 QuantifierPusher]: treesize reduction 3, result has 89.3 percent of original size [2021-08-12 22:23:48,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-12 22:23:48,865 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:48,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-12 22:23:48,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-08-12 22:23:48,866 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:48,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-12 22:23:48,867 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:48,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-08-12 22:23:48,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-12 22:23:48,868 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:48,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-12 22:23:48,870 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:48,871 INFO L732 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-08-12 22:23:48,871 INFO L739 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:48,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-12 22:23:48,872 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:48,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 22:23:48,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 22:23:48,874 INFO L732 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-08-12 22:23:48,875 INFO L739 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:48,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-12 22:23:48,875 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:48,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 22:23:48,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 22:23:48,877 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:48,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 22:23:48,888 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:48,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 22:23:48,889 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:48,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 22:23:48,890 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:48,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 22:23:48,890 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:48,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 22:23:48,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:48,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-12 22:23:48,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:48,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-12 22:23:48,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:48,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-12 22:23:48,893 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:48,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-12 22:23:48,906 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:48,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-12 22:23:48,907 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:48,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:23:48,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-08-12 22:23:48,908 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:48,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-12 22:23:48,909 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:48,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-12 22:23:48,909 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:48,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:23:48,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-08-12 22:23:48,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-12 22:23:48,912 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:48,913 INFO L732 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-08-12 22:23:48,914 INFO L739 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:48,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-12 22:23:48,914 INFO L142 QuantifierPusher]: treesize reduction 9, result has 52.6 percent of original size [2021-08-12 22:23:48,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:48,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:48,916 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:48,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:48,925 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:48,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:48,926 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:48,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:48,926 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:48,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:48,927 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:48,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:48,927 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:48,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:48,928 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:48,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:48,928 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:48,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:48,929 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:48,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:48,929 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:48,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:48,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:48,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:48,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:48,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:48,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:48,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:48,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:48,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:48,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:48,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:48,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:48,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:48,933 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:48,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:48,933 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:48,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:48,934 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:48,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:48,934 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:48,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:48,935 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:48,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:48,935 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:48,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:48,936 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:48,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:48,936 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:48,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:48,937 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:48,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:48,937 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:48,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:48,938 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:48,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:48,938 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:48,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:48,939 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:48,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:48,939 INFO L142 QuantifierPusher]: treesize reduction 6, result has 14.3 percent of original size [2021-08-12 22:23:48,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:48,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:48,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:48,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:48,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:48,941 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:48,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:48,941 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:23:48,941 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [611540801] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-12 22:23:48,941 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-12 22:23:48,941 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 12 [2021-08-12 22:23:48,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472121030] [2021-08-12 22:23:48,942 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-08-12 22:23:48,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:23:48,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-12 22:23:48,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-08-12 22:23:48,944 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 28 [2021-08-12 22:23:48,944 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 829 places, 1573 transitions, 361432 flow. Second operand has 12 states, 12 states have (on average 16.333333333333332) internal successors, (196), 12 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:23:48,944 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:23:48,944 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 28 [2021-08-12 22:23:48,944 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:23:49,656 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 30 [2021-08-12 22:23:55,398 INFO L129 PetriNetUnfolder]: 1291/4039 cut-off events. [2021-08-12 22:23:55,399 INFO L130 PetriNetUnfolder]: For 865137/877842 co-relation queries the response was YES. [2021-08-12 22:23:55,411 INFO L84 FinitePrefix]: Finished finitePrefix Result has 285588 conditions, 4039 events. 1291/4039 cut-off events. For 865137/877842 co-relation queries the response was YES. Maximal size of possible extension queue 542. Compared 43812 event pairs, 0 based on Foata normal form. 28/3015 useless extension candidates. Maximal degree in co-relation 276041. Up to 2313 conditions per place. [2021-08-12 22:23:55,481 INFO L132 encePairwiseOnDemand]: 19/28 looper letters, 609 selfloop transitions, 369 changer transitions 575/1563 dead transitions. [2021-08-12 22:23:55,481 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 846 places, 1563 transitions, 362092 flow [2021-08-12 22:23:55,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-08-12 22:23:55,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-08-12 22:23:55,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 368 transitions. [2021-08-12 22:23:55,482 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7301587301587301 [2021-08-12 22:23:55,483 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 368 transitions. [2021-08-12 22:23:55,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 368 transitions. [2021-08-12 22:23:55,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:23:55,483 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 368 transitions. [2021-08-12 22:23:55,484 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 20.444444444444443) internal successors, (368), 18 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:23:55,484 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 28.0) internal successors, (532), 19 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:23:55,484 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 28.0) internal successors, (532), 19 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:23:55,485 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 819 predicate places. [2021-08-12 22:23:55,485 INFO L482 AbstractCegarLoop]: Abstraction has has 846 places, 1563 transitions, 362092 flow [2021-08-12 22:23:55,485 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 16.333333333333332) internal successors, (196), 12 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:23:55,485 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:23:55,485 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:23:55,688 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-12 22:23:55,689 INFO L430 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:23:55,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:23:55,689 INFO L82 PathProgramCache]: Analyzing trace with hash 1118364997, now seen corresponding path program 4 times [2021-08-12 22:23:55,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:23:55,689 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298605990] [2021-08-12 22:23:55,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:23:55,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:23:55,697 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:55,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:55,697 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:55,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-08-12 22:23:55,702 INFO L142 QuantifierPusher]: treesize reduction 5, result has 72.2 percent of original size [2021-08-12 22:23:55,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-12 22:23:55,710 INFO L142 QuantifierPusher]: treesize reduction 5, result has 72.2 percent of original size [2021-08-12 22:23:55,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-12 22:23:55,719 INFO L142 QuantifierPusher]: treesize reduction 5, result has 77.3 percent of original size [2021-08-12 22:23:55,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-12 22:23:55,727 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:55,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-12 22:23:55,735 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:55,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-12 22:23:55,744 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:55,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-12 22:23:55,752 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:55,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:55,752 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:23:55,752 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:23:55,753 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298605990] [2021-08-12 22:23:55,753 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298605990] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-12 22:23:55,753 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [912412765] [2021-08-12 22:23:55,753 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-12 22:23:55,782 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-12 22:23:55,782 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-12 22:23:55,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-12 22:23:55,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-12 22:23:55,783 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:55,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:55,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:55,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:55,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:55,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:55,785 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:55,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:55,786 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:55,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-08-12 22:23:55,786 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:55,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-08-12 22:23:55,787 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:55,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-08-12 22:23:55,787 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:55,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-08-12 22:23:55,788 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-08-12 22:23:55,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-12 22:23:55,789 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:55,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-12 22:23:55,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:55,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-12 22:23:55,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-12 22:23:55,791 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:55,792 INFO L732 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-08-12 22:23:55,801 INFO L739 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:55,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-12 22:23:55,801 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:55,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:23:55,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:23:55,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:55,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:23:55,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:55,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:23:55,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:55,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:23:55,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:55,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:23:55,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:55,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:23:55,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:55,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:23:55,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:55,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:23:55,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:55,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:23:55,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:55,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:23:55,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:55,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-12 22:23:55,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:55,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-12 22:23:55,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:55,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-12 22:23:55,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:55,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-12 22:23:55,833 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:55,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-12 22:23:55,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:55,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:23:55,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-12 22:23:55,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:55,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-12 22:23:55,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:55,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-12 22:23:55,836 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:55,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-12 22:23:55,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-12 22:23:55,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-08-12 22:23:55,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:55,839 INFO L732 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-08-12 22:23:55,840 INFO L739 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:55,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-12 22:23:55,841 INFO L142 QuantifierPusher]: treesize reduction 9, result has 47.1 percent of original size [2021-08-12 22:23:55,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:56,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:23:56,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:56,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:23:56,022 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:56,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:23:56,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:56,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:23:56,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:56,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:23:56,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:56,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 22:23:56,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:56,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 22:23:56,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:56,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 22:23:56,029 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:56,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 22:23:56,029 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:56,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 22:23:56,045 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:56,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-12 22:23:56,046 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:56,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-12 22:23:56,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-12 22:23:56,047 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:56,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-12 22:23:56,050 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:56,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-12 22:23:56,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-12 22:23:56,051 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:56,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:56,052 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:56,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:56,061 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:56,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:56,061 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:56,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:56,062 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:56,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:56,062 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:56,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:56,062 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:56,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:56,063 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:56,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:56,063 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:56,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:56,064 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:56,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:56,064 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:56,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:56,064 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:56,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:56,065 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:56,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:56,065 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:56,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:56,066 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:56,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:56,066 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:56,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:56,066 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:56,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:56,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:56,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:56,068 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:56,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:56,068 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:56,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:56,068 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:56,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:56,069 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:56,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:56,069 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:56,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:56,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:56,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:56,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:56,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:56,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:56,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 22:23:56,071 INFO L142 QuantifierPusher]: treesize reduction 6, result has 14.3 percent of original size [2021-08-12 22:23:56,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:56,071 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:56,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:56,072 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:56,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:56,072 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:23:56,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:23:56,073 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 22:23:56,073 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [912412765] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-12 22:23:56,073 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-12 22:23:56,073 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2021-08-12 22:23:56,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678337331] [2021-08-12 22:23:56,073 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-08-12 22:23:56,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:23:56,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-08-12 22:23:56,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-08-12 22:23:56,074 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 28 [2021-08-12 22:23:56,074 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 846 places, 1563 transitions, 362092 flow. Second operand has 14 states, 14 states have (on average 16.071428571428573) internal successors, (225), 14 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 22:23:56,074 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:23:56,074 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 28 [2021-08-12 22:23:56,074 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand