/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-5.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 06:29:33,582 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 06:29:33,584 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 06:29:33,620 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 06:29:33,621 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 06:29:33,624 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 06:29:33,626 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 06:29:33,631 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 06:29:33,633 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 06:29:33,636 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 06:29:33,637 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 06:29:33,638 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 06:29:33,638 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 06:29:33,640 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 06:29:33,641 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 06:29:33,642 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 06:29:33,644 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 06:29:33,645 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 06:29:33,647 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 06:29:33,654 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 06:29:33,655 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 06:29:33,656 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 06:29:33,657 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 06:29:33,659 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 06:29:33,665 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-11 06:29:33,665 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-11 06:29:33,665 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-11 06:29:33,667 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-11 06:29:33,667 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-11 06:29:33,668 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-11 06:29:33,668 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-11 06:29:33,669 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-11 06:29:33,670 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-11 06:29:33,670 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-11 06:29:33,671 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-11 06:29:33,671 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-11 06:29:33,672 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-11 06:29:33,672 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-11 06:29:33,672 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 06:29:33,673 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 06:29:33,673 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 06:29:33,677 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 [2021-03-11 06:29:33,709 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 06:29:33,709 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 06:29:33,712 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 06:29:33,712 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 06:29:33,713 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 06:29:33,713 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 06:29:33,713 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 06:29:33,713 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 06:29:33,713 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 06:29:33,714 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 06:29:33,714 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 06:29:33,715 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 06:29:33,715 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 06:29:33,715 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 06:29:33,715 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 06:29:33,715 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 06:29:33,715 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 06:29:33,716 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 06:29:33,716 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 06:29:33,716 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 06:29:33,716 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 06:29:33,716 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 06:29:33,716 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 06:29:33,717 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 06:29:33,717 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 06:29:33,717 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 06:29:33,717 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 06:29:33,717 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-03-11 06:29:33,717 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-11 06:29:33,718 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 06:29:33,994 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 06:29:34,018 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 06:29:34,020 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 06:29:34,021 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-11 06:29:34,022 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-11 06:29:34,022 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-5.wvr.bpl [2021-03-11 06:29:34,023 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-5.wvr.bpl' [2021-03-11 06:29:34,062 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 06:29:34,066 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-11 06:29:34,067 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 06:29:34,067 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 06:29:34,067 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 06:29:34,078 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 06:29:34" (1/1) ... [2021-03-11 06:29:34,084 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 06:29:34" (1/1) ... [2021-03-11 06:29:34,092 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 06:29:34,094 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 06:29:34,094 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 06:29:34,094 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 06:29:34,100 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 06:29:34" (1/1) ... [2021-03-11 06:29:34,101 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 06:29:34" (1/1) ... [2021-03-11 06:29:34,103 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 06:29:34" (1/1) ... [2021-03-11 06:29:34,103 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 06:29:34" (1/1) ... [2021-03-11 06:29:34,107 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 06:29:34" (1/1) ... [2021-03-11 06:29:34,108 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 06:29:34" (1/1) ... [2021-03-11 06:29:34,109 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 06:29:34" (1/1) ... [2021-03-11 06:29:34,113 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 06:29:34,114 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 06:29:34,114 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 06:29:34,114 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 06:29:34,115 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 06:29:34" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 06:29:34,177 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-03-11 06:29:34,177 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-11 06:29:34,177 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-11 06:29:34,177 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-03-11 06:29:34,177 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-11 06:29:34,177 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-11 06:29:34,177 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-11 06:29:34,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 06:29:34,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 06:29:34,178 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-03-11 06:29:34,178 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-03-11 06:29:34,178 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-03-11 06:29:34,178 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-03-11 06:29:34,178 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-03-11 06:29:34,178 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-03-11 06:29:34,179 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2021-03-11 06:29:34,183 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2021-03-11 06:29:34,184 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2021-03-11 06:29:34,185 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 06:29:34,402 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 06:29:34,402 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-11 06:29:34,404 INFO L202 PluginConnector]: Adding new model ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 06:29:34 BoogieIcfgContainer [2021-03-11 06:29:34,404 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 06:29:34,405 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 06:29:34,405 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 06:29:34,407 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 06:29:34,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 06:29:34" (1/2) ... [2021-03-11 06:29:34,408 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3197b649 and model type ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 06:29:34, skipping insertion in model container [2021-03-11 06:29:34,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 06:29:34" (2/2) ... [2021-03-11 06:29:34,409 INFO L111 eAbstractionObserver]: Analyzing ICFG ticket-5.wvr.bpl [2021-03-11 06:29:34,413 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 06:29:34,432 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 06:29:34,432 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 06:29:34,549 INFO L149 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2021-03-11 06:29:34,566 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-03-11 06:29:34,587 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 06:29:34,587 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-11 06:29:34,588 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 06:29:34,588 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 06:29:34,588 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 06:29:34,588 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 06:29:34,588 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 06:29:34,588 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 06:29:34,604 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 62 places, 46 transitions, 132 flow [2021-03-11 06:29:34,644 INFO L129 PetriNetUnfolder]: 0/41 cut-off events. [2021-03-11 06:29:34,644 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2021-03-11 06:29:34,645 INFO L84 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 41 events. 0/41 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 91 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-11 06:29:34,646 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 46 transitions, 132 flow [2021-03-11 06:29:34,649 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 39 transitions, 108 flow [2021-03-11 06:29:34,660 INFO L129 PetriNetUnfolder]: 0/38 cut-off events. [2021-03-11 06:29:34,660 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2021-03-11 06:29:34,661 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:29:34,661 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:29:34,661 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 06:29:34,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:29:34,665 INFO L82 PathProgramCache]: Analyzing trace with hash 845413524, now seen corresponding path program 1 times [2021-03-11 06:29:34,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:29:34,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761124922] [2021-03-11 06:29:34,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:29:34,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:29:34,888 INFO L142 QuantifierPusher]: treesize reduction 11, result has 52.2 percent of original size [2021-03-11 06:29:34,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-11 06:29:34,932 INFO L142 QuantifierPusher]: treesize reduction 4, result has 60.0 percent of original size [2021-03-11 06:29:34,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-03-11 06:29:34,945 INFO L142 QuantifierPusher]: treesize reduction 4, result has 60.0 percent of original size [2021-03-11 06:29:34,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-03-11 06:29:34,946 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:29:34,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-03-11 06:29:34,954 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:29:34,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:29:34,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:29:34,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:29:34,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:29:34,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-03-11 06:29:34,975 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:29:34,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:29:34,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 06:29:34,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761124922] [2021-03-11 06:29:34,979 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:29:34,979 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-11 06:29:34,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677256765] [2021-03-11 06:29:34,986 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 06:29:34,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:29:34,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 06:29:34,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-03-11 06:29:35,002 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 46 [2021-03-11 06:29:35,006 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 39 transitions, 108 flow. Second operand has 6 states, 6 states have (on average 34.166666666666664) internal successors, (205), 6 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:29:35,006 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:29:35,006 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 46 [2021-03-11 06:29:35,008 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:29:35,376 INFO L129 PetriNetUnfolder]: 1023/2303 cut-off events. [2021-03-11 06:29:35,376 INFO L130 PetriNetUnfolder]: For 172/172 co-relation queries the response was YES. [2021-03-11 06:29:35,386 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3970 conditions, 2303 events. 1023/2303 cut-off events. For 172/172 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 18549 event pairs, 452 based on Foata normal form. 1/2283 useless extension candidates. Maximal degree in co-relation 3939. Up to 810 conditions per place. [2021-03-11 06:29:35,397 INFO L132 encePairwiseOnDemand]: 33/46 looper letters, 23 selfloop transitions, 11 changer transitions 1/61 dead transitions. [2021-03-11 06:29:35,397 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 61 transitions, 222 flow [2021-03-11 06:29:35,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 06:29:35,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-11 06:29:35,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 196 transitions. [2021-03-11 06:29:35,407 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8521739130434782 [2021-03-11 06:29:35,407 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 196 transitions. [2021-03-11 06:29:35,408 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 196 transitions. [2021-03-11 06:29:35,409 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:29:35,410 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 196 transitions. [2021-03-11 06:29:35,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:29:35,416 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 46.0) internal successors, (276), 6 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:29:35,416 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 46.0) internal successors, (276), 6 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:29:35,418 INFO L185 Difference]: Start difference. First operand has 55 places, 39 transitions, 108 flow. Second operand 5 states and 196 transitions. [2021-03-11 06:29:35,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 61 transitions, 222 flow [2021-03-11 06:29:35,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 61 transitions, 202 flow, removed 0 selfloop flow, removed 10 redundant places. [2021-03-11 06:29:35,432 INFO L241 Difference]: Finished difference. Result has 52 places, 48 transitions, 167 flow [2021-03-11 06:29:35,433 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=167, PETRI_PLACES=52, PETRI_TRANSITIONS=48} [2021-03-11 06:29:35,434 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, -3 predicate places. [2021-03-11 06:29:35,434 INFO L480 AbstractCegarLoop]: Abstraction has has 52 places, 48 transitions, 167 flow [2021-03-11 06:29:35,434 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 34.166666666666664) internal successors, (205), 6 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:29:35,434 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:29:35,434 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:29:35,435 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 06:29:35,435 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 06:29:35,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:29:35,436 INFO L82 PathProgramCache]: Analyzing trace with hash 784312606, now seen corresponding path program 2 times [2021-03-11 06:29:35,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:29:35,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324171628] [2021-03-11 06:29:35,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:29:35,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:29:35,475 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:29:35,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:29:35,478 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:29:35,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:29:35,484 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:29:35,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:29:35,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:29:35,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:29:35,496 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:29:35,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:29:35,505 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:29:35,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:29:35,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:29:35,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:29:35,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 06:29:35,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324171628] [2021-03-11 06:29:35,513 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:29:35,513 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 06:29:35,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435012989] [2021-03-11 06:29:35,515 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 06:29:35,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:29:35,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 06:29:35,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-03-11 06:29:35,524 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-03-11 06:29:35,524 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 48 transitions, 167 flow. Second operand has 8 states, 8 states have (on average 31.0) internal successors, (248), 8 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:29:35,524 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:29:35,524 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-03-11 06:29:35,524 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:29:37,141 INFO L129 PetriNetUnfolder]: 9613/16180 cut-off events. [2021-03-11 06:29:37,142 INFO L130 PetriNetUnfolder]: For 2263/2425 co-relation queries the response was YES. [2021-03-11 06:29:37,194 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35006 conditions, 16180 events. 9613/16180 cut-off events. For 2263/2425 co-relation queries the response was YES. Maximal size of possible extension queue 1194. Compared 133975 event pairs, 2446 based on Foata normal form. 26/14892 useless extension candidates. Maximal degree in co-relation 34773. Up to 4444 conditions per place. [2021-03-11 06:29:37,314 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 43 selfloop transitions, 46 changer transitions 0/116 dead transitions. [2021-03-11 06:29:37,315 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 116 transitions, 521 flow [2021-03-11 06:29:37,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 06:29:37,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-11 06:29:37,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 322 transitions. [2021-03-11 06:29:37,317 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.875 [2021-03-11 06:29:37,318 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 322 transitions. [2021-03-11 06:29:37,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 322 transitions. [2021-03-11 06:29:37,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:29:37,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 322 transitions. [2021-03-11 06:29:37,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 40.25) internal successors, (322), 8 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:29:37,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 46.0) internal successors, (414), 9 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:29:37,322 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 46.0) internal successors, (414), 9 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:29:37,322 INFO L185 Difference]: Start difference. First operand has 52 places, 48 transitions, 167 flow. Second operand 8 states and 322 transitions. [2021-03-11 06:29:37,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 116 transitions, 521 flow [2021-03-11 06:29:37,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 116 transitions, 502 flow, removed 1 selfloop flow, removed 3 redundant places. [2021-03-11 06:29:37,329 INFO L241 Difference]: Finished difference. Result has 57 places, 92 transitions, 403 flow [2021-03-11 06:29:37,329 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=403, PETRI_PLACES=57, PETRI_TRANSITIONS=92} [2021-03-11 06:29:37,330 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 2 predicate places. [2021-03-11 06:29:37,330 INFO L480 AbstractCegarLoop]: Abstraction has has 57 places, 92 transitions, 403 flow [2021-03-11 06:29:37,330 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 31.0) internal successors, (248), 8 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:29:37,330 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:29:37,330 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:29:37,331 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 06:29:37,331 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 06:29:37,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:29:37,331 INFO L82 PathProgramCache]: Analyzing trace with hash 575475790, now seen corresponding path program 3 times [2021-03-11 06:29:37,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:29:37,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415811861] [2021-03-11 06:29:37,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:29:37,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:29:37,358 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:29:37,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:29:37,361 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:29:37,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:29:37,366 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:29:37,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:29:37,371 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:29:37,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:29:37,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 06:29:37,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415811861] [2021-03-11 06:29:37,373 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:29:37,373 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 06:29:37,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576448976] [2021-03-11 06:29:37,374 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 06:29:37,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:29:37,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 06:29:37,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-11 06:29:37,375 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-03-11 06:29:37,375 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 92 transitions, 403 flow. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:29:37,375 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:29:37,375 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-03-11 06:29:37,375 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:29:38,747 INFO L129 PetriNetUnfolder]: 9251/17035 cut-off events. [2021-03-11 06:29:38,748 INFO L130 PetriNetUnfolder]: For 7444/8546 co-relation queries the response was YES. [2021-03-11 06:29:38,808 INFO L84 FinitePrefix]: Finished finitePrefix Result has 42852 conditions, 17035 events. 9251/17035 cut-off events. For 7444/8546 co-relation queries the response was YES. Maximal size of possible extension queue 1280. Compared 154042 event pairs, 2218 based on Foata normal form. 334/16442 useless extension candidates. Maximal degree in co-relation 42160. Up to 9948 conditions per place. [2021-03-11 06:29:38,903 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 87 selfloop transitions, 47 changer transitions 0/161 dead transitions. [2021-03-11 06:29:38,904 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 161 transitions, 991 flow [2021-03-11 06:29:38,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 06:29:38,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-11 06:29:38,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 194 transitions. [2021-03-11 06:29:38,906 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8434782608695652 [2021-03-11 06:29:38,907 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 194 transitions. [2021-03-11 06:29:38,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 194 transitions. [2021-03-11 06:29:38,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:29:38,908 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 194 transitions. [2021-03-11 06:29:38,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 38.8) internal successors, (194), 5 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:29:38,910 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 46.0) internal successors, (276), 6 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:29:38,910 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 46.0) internal successors, (276), 6 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:29:38,910 INFO L185 Difference]: Start difference. First operand has 57 places, 92 transitions, 403 flow. Second operand 5 states and 194 transitions. [2021-03-11 06:29:38,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 161 transitions, 991 flow [2021-03-11 06:29:38,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 161 transitions, 875 flow, removed 52 selfloop flow, removed 2 redundant places. [2021-03-11 06:29:38,935 INFO L241 Difference]: Finished difference. Result has 61 places, 128 transitions, 678 flow [2021-03-11 06:29:38,936 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=678, PETRI_PLACES=61, PETRI_TRANSITIONS=128} [2021-03-11 06:29:38,936 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 6 predicate places. [2021-03-11 06:29:38,936 INFO L480 AbstractCegarLoop]: Abstraction has has 61 places, 128 transitions, 678 flow [2021-03-11 06:29:38,936 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:29:38,936 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:29:38,936 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:29:38,936 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 06:29:38,937 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 06:29:38,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:29:38,937 INFO L82 PathProgramCache]: Analyzing trace with hash 871374948, now seen corresponding path program 4 times [2021-03-11 06:29:38,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:29:38,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651192419] [2021-03-11 06:29:38,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:29:38,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:29:38,983 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:29:38,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:29:38,986 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:29:38,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:29:38,990 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:29:38,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:29:38,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:29:38,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:29:39,002 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:29:39,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:29:39,010 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:29:39,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:29:39,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 06:29:39,013 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651192419] [2021-03-11 06:29:39,013 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:29:39,013 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 06:29:39,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825281546] [2021-03-11 06:29:39,014 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 06:29:39,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:29:39,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 06:29:39,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-03-11 06:29:39,017 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-03-11 06:29:39,017 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 128 transitions, 678 flow. Second operand has 7 states, 7 states have (on average 31.285714285714285) internal successors, (219), 7 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:29:39,017 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:29:39,017 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-03-11 06:29:39,018 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:29:41,030 INFO L129 PetriNetUnfolder]: 12515/21435 cut-off events. [2021-03-11 06:29:41,030 INFO L130 PetriNetUnfolder]: For 17929/19126 co-relation queries the response was YES. [2021-03-11 06:29:41,125 INFO L84 FinitePrefix]: Finished finitePrefix Result has 60086 conditions, 21435 events. 12515/21435 cut-off events. For 17929/19126 co-relation queries the response was YES. Maximal size of possible extension queue 1560. Compared 187255 event pairs, 2842 based on Foata normal form. 639/20451 useless extension candidates. Maximal degree in co-relation 59729. Up to 5699 conditions per place. [2021-03-11 06:29:41,271 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 62 selfloop transitions, 108 changer transitions 0/197 dead transitions. [2021-03-11 06:29:41,271 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 197 transitions, 1347 flow [2021-03-11 06:29:41,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 06:29:41,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 06:29:41,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 282 transitions. [2021-03-11 06:29:41,272 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8757763975155279 [2021-03-11 06:29:41,273 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 282 transitions. [2021-03-11 06:29:41,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 282 transitions. [2021-03-11 06:29:41,276 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:29:41,276 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 282 transitions. [2021-03-11 06:29:41,278 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 40.285714285714285) internal successors, (282), 7 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:29:41,278 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 46.0) internal successors, (368), 8 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:29:41,282 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 46.0) internal successors, (368), 8 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:29:41,282 INFO L185 Difference]: Start difference. First operand has 61 places, 128 transitions, 678 flow. Second operand 7 states and 282 transitions. [2021-03-11 06:29:41,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 197 transitions, 1347 flow [2021-03-11 06:29:41,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 197 transitions, 1341 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 06:29:41,298 INFO L241 Difference]: Finished difference. Result has 69 places, 174 transitions, 1339 flow [2021-03-11 06:29:41,299 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=672, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1339, PETRI_PLACES=69, PETRI_TRANSITIONS=174} [2021-03-11 06:29:41,299 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 14 predicate places. [2021-03-11 06:29:41,299 INFO L480 AbstractCegarLoop]: Abstraction has has 69 places, 174 transitions, 1339 flow [2021-03-11 06:29:41,299 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 31.285714285714285) internal successors, (219), 7 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:29:41,299 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:29:41,299 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:29:41,299 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 06:29:41,300 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 06:29:41,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:29:41,301 INFO L82 PathProgramCache]: Analyzing trace with hash -1312926230, now seen corresponding path program 5 times [2021-03-11 06:29:41,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:29:41,301 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806576631] [2021-03-11 06:29:41,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:29:41,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:29:41,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:29:41,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:29:41,340 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:29:41,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:29:41,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:29:41,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:29:41,349 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:29:41,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:29:41,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 06:29:41,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806576631] [2021-03-11 06:29:41,350 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:29:41,350 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 06:29:41,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232605870] [2021-03-11 06:29:41,350 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 06:29:41,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:29:41,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 06:29:41,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-11 06:29:41,352 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-03-11 06:29:41,352 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 174 transitions, 1339 flow. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:29:41,352 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:29:41,352 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-03-11 06:29:41,352 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:29:42,979 INFO L129 PetriNetUnfolder]: 11096/20413 cut-off events. [2021-03-11 06:29:42,979 INFO L130 PetriNetUnfolder]: For 39687/42558 co-relation queries the response was YES. [2021-03-11 06:29:43,034 INFO L84 FinitePrefix]: Finished finitePrefix Result has 67837 conditions, 20413 events. 11096/20413 cut-off events. For 39687/42558 co-relation queries the response was YES. Maximal size of possible extension queue 1531. Compared 190080 event pairs, 2792 based on Foata normal form. 1006/20206 useless extension candidates. Maximal degree in co-relation 67128. Up to 12225 conditions per place. [2021-03-11 06:29:43,118 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 126 selfloop transitions, 70 changer transitions 0/223 dead transitions. [2021-03-11 06:29:43,118 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 223 transitions, 2083 flow [2021-03-11 06:29:43,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 06:29:43,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-11 06:29:43,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 194 transitions. [2021-03-11 06:29:43,119 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8434782608695652 [2021-03-11 06:29:43,119 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 194 transitions. [2021-03-11 06:29:43,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 194 transitions. [2021-03-11 06:29:43,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:29:43,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 194 transitions. [2021-03-11 06:29:43,120 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 38.8) internal successors, (194), 5 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:29:43,121 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 46.0) internal successors, (276), 6 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:29:43,121 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 46.0) internal successors, (276), 6 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:29:43,121 INFO L185 Difference]: Start difference. First operand has 69 places, 174 transitions, 1339 flow. Second operand 5 states and 194 transitions. [2021-03-11 06:29:43,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 223 transitions, 2083 flow [2021-03-11 06:29:43,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 223 transitions, 2059 flow, removed 5 selfloop flow, removed 2 redundant places. [2021-03-11 06:29:43,274 INFO L241 Difference]: Finished difference. Result has 73 places, 193 transitions, 1723 flow [2021-03-11 06:29:43,275 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1317, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1723, PETRI_PLACES=73, PETRI_TRANSITIONS=193} [2021-03-11 06:29:43,275 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 18 predicate places. [2021-03-11 06:29:43,275 INFO L480 AbstractCegarLoop]: Abstraction has has 73 places, 193 transitions, 1723 flow [2021-03-11 06:29:43,275 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:29:43,276 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:29:43,276 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:29:43,276 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-11 06:29:43,276 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 06:29:43,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:29:43,276 INFO L82 PathProgramCache]: Analyzing trace with hash -346025012, now seen corresponding path program 6 times [2021-03-11 06:29:43,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:29:43,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501092845] [2021-03-11 06:29:43,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:29:43,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:29:43,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:29:43,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:29:43,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:29:43,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:29:43,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:29:43,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:29:43,303 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:29:43,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:29:43,307 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:29:43,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:29:43,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 06:29:43,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501092845] [2021-03-11 06:29:43,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:29:43,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-11 06:29:43,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474757413] [2021-03-11 06:29:43,309 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 06:29:43,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:29:43,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 06:29:43,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-03-11 06:29:43,309 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-03-11 06:29:43,310 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 193 transitions, 1723 flow. Second operand has 6 states, 6 states have (on average 31.666666666666668) internal successors, (190), 6 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:29:43,310 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:29:43,310 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-03-11 06:29:43,310 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:29:45,285 INFO L129 PetriNetUnfolder]: 14079/25452 cut-off events. [2021-03-11 06:29:45,285 INFO L130 PetriNetUnfolder]: For 66726/71082 co-relation queries the response was YES. [2021-03-11 06:29:45,353 INFO L84 FinitePrefix]: Finished finitePrefix Result has 90215 conditions, 25452 events. 14079/25452 cut-off events. For 66726/71082 co-relation queries the response was YES. Maximal size of possible extension queue 1852. Compared 239839 event pairs, 3038 based on Foata normal form. 1386/25274 useless extension candidates. Maximal degree in co-relation 89575. Up to 8157 conditions per place. [2021-03-11 06:29:45,461 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 110 selfloop transitions, 161 changer transitions 0/298 dead transitions. [2021-03-11 06:29:45,461 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 298 transitions, 3248 flow [2021-03-11 06:29:45,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-11 06:29:45,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-11 06:29:45,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 238 transitions. [2021-03-11 06:29:45,463 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8623188405797102 [2021-03-11 06:29:45,463 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 238 transitions. [2021-03-11 06:29:45,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 238 transitions. [2021-03-11 06:29:45,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:29:45,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 238 transitions. [2021-03-11 06:29:45,464 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 39.666666666666664) internal successors, (238), 6 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:29:45,465 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 46.0) internal successors, (322), 7 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:29:45,465 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 46.0) internal successors, (322), 7 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:29:45,465 INFO L185 Difference]: Start difference. First operand has 73 places, 193 transitions, 1723 flow. Second operand 6 states and 238 transitions. [2021-03-11 06:29:45,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 298 transitions, 3248 flow [2021-03-11 06:29:45,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 298 transitions, 3151 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-11 06:29:45,520 INFO L241 Difference]: Finished difference. Result has 79 places, 270 transitions, 3136 flow [2021-03-11 06:29:45,521 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1656, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3136, PETRI_PLACES=79, PETRI_TRANSITIONS=270} [2021-03-11 06:29:45,521 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 24 predicate places. [2021-03-11 06:29:45,521 INFO L480 AbstractCegarLoop]: Abstraction has has 79 places, 270 transitions, 3136 flow [2021-03-11 06:29:45,521 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 31.666666666666668) internal successors, (190), 6 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:29:45,521 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:29:45,521 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:29:45,521 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-11 06:29:45,521 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 06:29:45,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:29:45,522 INFO L82 PathProgramCache]: Analyzing trace with hash -2015665692, now seen corresponding path program 7 times [2021-03-11 06:29:45,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:29:45,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130596431] [2021-03-11 06:29:45,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:29:45,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:29:45,540 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:29:45,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:29:45,542 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:29:45,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:29:45,546 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:29:45,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:29:45,550 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:29:45,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:29:45,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 06:29:45,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130596431] [2021-03-11 06:29:45,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:29:45,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 06:29:45,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150968038] [2021-03-11 06:29:45,551 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 06:29:45,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:29:45,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 06:29:45,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-11 06:29:45,552 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-03-11 06:29:45,552 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 270 transitions, 3136 flow. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:29:45,552 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:29:45,552 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-03-11 06:29:45,552 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:29:47,637 INFO L129 PetriNetUnfolder]: 13091/24389 cut-off events. [2021-03-11 06:29:47,638 INFO L130 PetriNetUnfolder]: For 97212/102178 co-relation queries the response was YES. [2021-03-11 06:29:47,718 INFO L84 FinitePrefix]: Finished finitePrefix Result has 98057 conditions, 24389 events. 13091/24389 cut-off events. For 97212/102178 co-relation queries the response was YES. Maximal size of possible extension queue 1827. Compared 235415 event pairs, 3910 based on Foata normal form. 1274/24319 useless extension candidates. Maximal degree in co-relation 97263. Up to 15116 conditions per place. [2021-03-11 06:29:47,797 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 173 selfloop transitions, 124 changer transitions 0/324 dead transitions. [2021-03-11 06:29:47,798 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 324 transitions, 4340 flow [2021-03-11 06:29:47,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 06:29:47,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-11 06:29:47,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 194 transitions. [2021-03-11 06:29:47,799 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8434782608695652 [2021-03-11 06:29:47,799 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 194 transitions. [2021-03-11 06:29:47,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 194 transitions. [2021-03-11 06:29:47,799 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:29:47,799 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 194 transitions. [2021-03-11 06:29:47,799 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 38.8) internal successors, (194), 5 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:29:47,800 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 46.0) internal successors, (276), 6 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:29:47,800 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 46.0) internal successors, (276), 6 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:29:47,800 INFO L185 Difference]: Start difference. First operand has 79 places, 270 transitions, 3136 flow. Second operand 5 states and 194 transitions. [2021-03-11 06:29:47,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 324 transitions, 4340 flow [2021-03-11 06:29:47,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 324 transitions, 4334 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 06:29:47,912 INFO L241 Difference]: Finished difference. Result has 84 places, 297 transitions, 3939 flow [2021-03-11 06:29:47,913 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3097, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3939, PETRI_PLACES=84, PETRI_TRANSITIONS=297} [2021-03-11 06:29:47,913 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 29 predicate places. [2021-03-11 06:29:47,913 INFO L480 AbstractCegarLoop]: Abstraction has has 84 places, 297 transitions, 3939 flow [2021-03-11 06:29:47,913 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:29:47,913 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:29:47,913 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:29:47,913 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-11 06:29:47,914 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 06:29:47,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:29:47,914 INFO L82 PathProgramCache]: Analyzing trace with hash -1795632690, now seen corresponding path program 8 times [2021-03-11 06:29:47,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:29:47,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541038096] [2021-03-11 06:29:47,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:29:47,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:29:47,948 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:29:47,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:29:47,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:29:47,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:29:47,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:29:47,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:29:47,958 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:29:47,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:29:47,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:29:47,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:29:47,967 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:29:47,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:29:47,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:29:47,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:29:47,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 06:29:47,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541038096] [2021-03-11 06:29:47,973 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:29:47,973 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 06:29:47,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463139185] [2021-03-11 06:29:47,974 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 06:29:47,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:29:47,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 06:29:47,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-03-11 06:29:47,975 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-03-11 06:29:47,975 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 297 transitions, 3939 flow. Second operand has 8 states, 8 states have (on average 31.0) internal successors, (248), 8 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:29:47,975 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:29:47,975 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-03-11 06:29:47,975 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:29:50,036 INFO L129 PetriNetUnfolder]: 14368/25799 cut-off events. [2021-03-11 06:29:50,036 INFO L130 PetriNetUnfolder]: For 125183/131176 co-relation queries the response was YES. [2021-03-11 06:29:50,125 INFO L84 FinitePrefix]: Finished finitePrefix Result has 108871 conditions, 25799 events. 14368/25799 cut-off events. For 125183/131176 co-relation queries the response was YES. Maximal size of possible extension queue 1880. Compared 241227 event pairs, 2713 based on Foata normal form. 2610/26832 useless extension candidates. Maximal degree in co-relation 108372. Up to 5789 conditions per place. [2021-03-11 06:29:50,220 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 81 selfloop transitions, 271 changer transitions 0/379 dead transitions. [2021-03-11 06:29:50,220 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 379 transitions, 5482 flow [2021-03-11 06:29:50,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 06:29:50,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 06:29:50,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 365 transitions. [2021-03-11 06:29:50,221 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8816425120772947 [2021-03-11 06:29:50,221 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 365 transitions. [2021-03-11 06:29:50,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 365 transitions. [2021-03-11 06:29:50,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:29:50,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 365 transitions. [2021-03-11 06:29:50,224 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 40.55555555555556) internal successors, (365), 9 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:29:50,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 46.0) internal successors, (460), 10 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:29:50,225 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 46.0) internal successors, (460), 10 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:29:50,225 INFO L185 Difference]: Start difference. First operand has 84 places, 297 transitions, 3939 flow. Second operand 9 states and 365 transitions. [2021-03-11 06:29:50,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 379 transitions, 5482 flow [2021-03-11 06:29:50,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 379 transitions, 5343 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-11 06:29:50,480 INFO L241 Difference]: Finished difference. Result has 92 places, 338 transitions, 5066 flow [2021-03-11 06:29:50,480 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3818, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=230, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5066, PETRI_PLACES=92, PETRI_TRANSITIONS=338} [2021-03-11 06:29:50,481 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 37 predicate places. [2021-03-11 06:29:50,481 INFO L480 AbstractCegarLoop]: Abstraction has has 92 places, 338 transitions, 5066 flow [2021-03-11 06:29:50,481 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 31.0) internal successors, (248), 8 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:29:50,481 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:29:50,481 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:29:50,481 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-11 06:29:50,482 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 06:29:50,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:29:50,482 INFO L82 PathProgramCache]: Analyzing trace with hash -886284040, now seen corresponding path program 9 times [2021-03-11 06:29:50,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:29:50,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729735520] [2021-03-11 06:29:50,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:29:50,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:29:50,500 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:29:50,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:29:50,503 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:29:50,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:29:50,506 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:29:50,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:29:50,516 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:29:50,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:29:50,522 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:29:50,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:29:50,529 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:29:50,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:29:50,537 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:29:50,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:29:50,544 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:29:50,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:29:50,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 06:29:50,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729735520] [2021-03-11 06:29:50,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:29:50,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 06:29:50,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382637749] [2021-03-11 06:29:50,546 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 06:29:50,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:29:50,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 06:29:50,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-03-11 06:29:50,547 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-03-11 06:29:50,548 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 338 transitions, 5066 flow. Second operand has 9 states, 9 states have (on average 30.77777777777778) internal successors, (277), 9 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:29:50,548 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:29:50,548 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-03-11 06:29:50,548 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:29:53,164 INFO L129 PetriNetUnfolder]: 15100/27076 cut-off events. [2021-03-11 06:29:53,164 INFO L130 PetriNetUnfolder]: For 191327/198340 co-relation queries the response was YES. [2021-03-11 06:29:53,258 INFO L84 FinitePrefix]: Finished finitePrefix Result has 127412 conditions, 27076 events. 15100/27076 cut-off events. For 191327/198340 co-relation queries the response was YES. Maximal size of possible extension queue 1935. Compared 254270 event pairs, 2651 based on Foata normal form. 2513/27936 useless extension candidates. Maximal degree in co-relation 126925. Up to 5955 conditions per place. [2021-03-11 06:29:53,364 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 55 selfloop transitions, 361 changer transitions 0/443 dead transitions. [2021-03-11 06:29:53,364 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 443 transitions, 7428 flow [2021-03-11 06:29:53,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-11 06:29:53,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-11 06:29:53,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 401 transitions. [2021-03-11 06:29:53,366 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8717391304347826 [2021-03-11 06:29:53,366 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 401 transitions. [2021-03-11 06:29:53,366 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 401 transitions. [2021-03-11 06:29:53,366 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:29:53,367 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 401 transitions. [2021-03-11 06:29:53,368 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 40.1) internal successors, (401), 10 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:29:53,368 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 46.0) internal successors, (506), 11 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:29:53,369 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 46.0) internal successors, (506), 11 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:29:53,369 INFO L185 Difference]: Start difference. First operand has 92 places, 338 transitions, 5066 flow. Second operand 10 states and 401 transitions. [2021-03-11 06:29:53,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 443 transitions, 7428 flow [2021-03-11 06:29:53,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 443 transitions, 6730 flow, removed 8 selfloop flow, removed 6 redundant places. [2021-03-11 06:29:53,586 INFO L241 Difference]: Finished difference. Result has 97 places, 407 transitions, 6512 flow [2021-03-11 06:29:53,586 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4514, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=292, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6512, PETRI_PLACES=97, PETRI_TRANSITIONS=407} [2021-03-11 06:29:53,586 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 42 predicate places. [2021-03-11 06:29:53,586 INFO L480 AbstractCegarLoop]: Abstraction has has 97 places, 407 transitions, 6512 flow [2021-03-11 06:29:53,586 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 30.77777777777778) internal successors, (277), 9 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:29:53,587 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:29:53,587 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:29:53,587 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-11 06:29:53,587 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 06:29:53,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:29:53,587 INFO L82 PathProgramCache]: Analyzing trace with hash 502847476, now seen corresponding path program 10 times [2021-03-11 06:29:53,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:29:53,588 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554995810] [2021-03-11 06:29:53,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:29:53,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:29:53,619 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:29:53,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:29:53,624 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:29:53,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:29:53,627 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:29:53,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:29:53,631 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:29:53,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:29:53,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:29:53,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:29:53,641 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:29:53,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:29:53,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:29:53,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:29:53,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 06:29:53,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554995810] [2021-03-11 06:29:53,648 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:29:53,648 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 06:29:53,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009947696] [2021-03-11 06:29:53,649 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 06:29:53,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:29:53,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 06:29:53,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-03-11 06:29:53,650 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-03-11 06:29:53,650 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 407 transitions, 6512 flow. Second operand has 8 states, 8 states have (on average 31.0) internal successors, (248), 8 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:29:53,650 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:29:53,651 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-03-11 06:29:53,651 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:29:56,724 INFO L129 PetriNetUnfolder]: 16092/29151 cut-off events. [2021-03-11 06:29:56,724 INFO L130 PetriNetUnfolder]: For 214417/222224 co-relation queries the response was YES. [2021-03-11 06:29:56,852 INFO L84 FinitePrefix]: Finished finitePrefix Result has 141552 conditions, 29151 events. 16092/29151 cut-off events. For 214417/222224 co-relation queries the response was YES. Maximal size of possible extension queue 2072. Compared 278910 event pairs, 2822 based on Foata normal form. 2946/30298 useless extension candidates. Maximal degree in co-relation 141083. Up to 6311 conditions per place. [2021-03-11 06:29:56,965 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 81 selfloop transitions, 400 changer transitions 0/508 dead transitions. [2021-03-11 06:29:56,965 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 508 transitions, 8776 flow [2021-03-11 06:29:56,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 06:29:56,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 06:29:56,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 365 transitions. [2021-03-11 06:29:56,967 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8816425120772947 [2021-03-11 06:29:56,967 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 365 transitions. [2021-03-11 06:29:56,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 365 transitions. [2021-03-11 06:29:56,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:29:56,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 365 transitions. [2021-03-11 06:29:56,968 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 40.55555555555556) internal successors, (365), 9 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:29:56,969 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 46.0) internal successors, (460), 10 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:29:56,969 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 46.0) internal successors, (460), 10 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:29:56,969 INFO L185 Difference]: Start difference. First operand has 97 places, 407 transitions, 6512 flow. Second operand 9 states and 365 transitions. [2021-03-11 06:29:56,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 508 transitions, 8776 flow [2021-03-11 06:29:57,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 508 transitions, 8142 flow, removed 4 selfloop flow, removed 5 redundant places. [2021-03-11 06:29:57,213 INFO L241 Difference]: Finished difference. Result has 102 places, 467 transitions, 7870 flow [2021-03-11 06:29:57,213 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5963, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=340, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7870, PETRI_PLACES=102, PETRI_TRANSITIONS=467} [2021-03-11 06:29:57,213 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 47 predicate places. [2021-03-11 06:29:57,213 INFO L480 AbstractCegarLoop]: Abstraction has has 102 places, 467 transitions, 7870 flow [2021-03-11 06:29:57,213 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 31.0) internal successors, (248), 8 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:29:57,213 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:29:57,214 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:29:57,214 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-11 06:29:57,214 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 06:29:57,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:29:57,214 INFO L82 PathProgramCache]: Analyzing trace with hash -198948708, now seen corresponding path program 11 times [2021-03-11 06:29:57,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:29:57,214 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965485605] [2021-03-11 06:29:57,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:29:57,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:29:57,230 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:29:57,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:29:57,233 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:29:57,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:29:57,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:29:57,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:29:57,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:29:57,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:29:57,244 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:29:57,244 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:29:57,249 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:29:57,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:29:57,253 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:29:57,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:29:57,259 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:29:57,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:29:57,265 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:29:57,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:29:57,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 06:29:57,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965485605] [2021-03-11 06:29:57,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:29:57,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-11 06:29:57,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801496771] [2021-03-11 06:29:57,266 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-11 06:29:57,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:29:57,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-11 06:29:57,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-03-11 06:29:57,267 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-03-11 06:29:57,267 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 467 transitions, 7870 flow. Second operand has 10 states, 10 states have (on average 30.6) internal successors, (306), 10 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:29:57,267 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:29:57,267 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-03-11 06:29:57,267 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:30:00,588 INFO L129 PetriNetUnfolder]: 16091/29266 cut-off events. [2021-03-11 06:30:00,588 INFO L130 PetriNetUnfolder]: For 246422/254567 co-relation queries the response was YES. [2021-03-11 06:30:00,734 INFO L84 FinitePrefix]: Finished finitePrefix Result has 145772 conditions, 29266 events. 16091/29266 cut-off events. For 246422/254567 co-relation queries the response was YES. Maximal size of possible extension queue 2137. Compared 282241 event pairs, 2628 based on Foata normal form. 3142/30634 useless extension candidates. Maximal degree in co-relation 145297. Up to 6316 conditions per place. [2021-03-11 06:30:00,875 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 71 selfloop transitions, 439 changer transitions 0/537 dead transitions. [2021-03-11 06:30:00,875 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 537 transitions, 9424 flow [2021-03-11 06:30:00,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-11 06:30:00,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-11 06:30:00,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 520 transitions. [2021-03-11 06:30:00,877 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8695652173913043 [2021-03-11 06:30:00,877 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 520 transitions. [2021-03-11 06:30:00,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 520 transitions. [2021-03-11 06:30:00,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:30:00,877 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 520 transitions. [2021-03-11 06:30:00,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 40.0) internal successors, (520), 13 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:30:00,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 46.0) internal successors, (644), 14 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:30:00,880 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 46.0) internal successors, (644), 14 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:30:00,880 INFO L185 Difference]: Start difference. First operand has 102 places, 467 transitions, 7870 flow. Second operand 13 states and 520 transitions. [2021-03-11 06:30:00,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 537 transitions, 9424 flow [2021-03-11 06:30:01,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 537 transitions, 9233 flow, removed 9 selfloop flow, removed 4 redundant places. [2021-03-11 06:30:01,299 INFO L241 Difference]: Finished difference. Result has 112 places, 485 transitions, 8895 flow [2021-03-11 06:30:01,299 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=7703, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=467, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=421, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=8895, PETRI_PLACES=112, PETRI_TRANSITIONS=485} [2021-03-11 06:30:01,300 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 57 predicate places. [2021-03-11 06:30:01,300 INFO L480 AbstractCegarLoop]: Abstraction has has 112 places, 485 transitions, 8895 flow [2021-03-11 06:30:01,300 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 30.6) internal successors, (306), 10 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:30:01,300 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:30:01,300 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:30:01,300 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-11 06:30:01,300 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 06:30:01,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:30:01,301 INFO L82 PathProgramCache]: Analyzing trace with hash 963402350, now seen corresponding path program 12 times [2021-03-11 06:30:01,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:30:01,301 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116227465] [2021-03-11 06:30:01,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:30:01,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:30:01,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:01,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:30:01,330 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:01,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:30:01,333 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:01,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:30:01,340 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:01,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:30:01,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 06:30:01,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116227465] [2021-03-11 06:30:01,341 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:30:01,341 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 06:30:01,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800535850] [2021-03-11 06:30:01,341 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 06:30:01,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:30:01,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 06:30:01,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-11 06:30:01,342 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-03-11 06:30:01,342 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 485 transitions, 8895 flow. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:30:01,342 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:30:01,343 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-03-11 06:30:01,343 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:30:04,419 INFO L129 PetriNetUnfolder]: 14364/27111 cut-off events. [2021-03-11 06:30:04,419 INFO L130 PetriNetUnfolder]: For 232607/237315 co-relation queries the response was YES. [2021-03-11 06:30:04,526 INFO L84 FinitePrefix]: Finished finitePrefix Result has 138199 conditions, 27111 events. 14364/27111 cut-off events. For 232607/237315 co-relation queries the response was YES. Maximal size of possible extension queue 2132. Compared 268810 event pairs, 4736 based on Foata normal form. 1112/26762 useless extension candidates. Maximal degree in co-relation 137532. Up to 16897 conditions per place. [2021-03-11 06:30:04,636 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 274 selfloop transitions, 243 changer transitions 1/545 dead transitions. [2021-03-11 06:30:04,637 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 545 transitions, 10957 flow [2021-03-11 06:30:04,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 06:30:04,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-11 06:30:04,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 194 transitions. [2021-03-11 06:30:04,638 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8434782608695652 [2021-03-11 06:30:04,638 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 194 transitions. [2021-03-11 06:30:04,638 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 194 transitions. [2021-03-11 06:30:04,638 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:30:04,638 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 194 transitions. [2021-03-11 06:30:04,639 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 38.8) internal successors, (194), 5 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:30:04,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 46.0) internal successors, (276), 6 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:30:04,639 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 46.0) internal successors, (276), 6 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:30:04,639 INFO L185 Difference]: Start difference. First operand has 112 places, 485 transitions, 8895 flow. Second operand 5 states and 194 transitions. [2021-03-11 06:30:04,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 545 transitions, 10957 flow [2021-03-11 06:30:05,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 545 transitions, 10032 flow, removed 4 selfloop flow, removed 8 redundant places. [2021-03-11 06:30:05,050 INFO L241 Difference]: Finished difference. Result has 110 places, 516 transitions, 9440 flow [2021-03-11 06:30:05,051 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=7630, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=466, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=192, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=9440, PETRI_PLACES=110, PETRI_TRANSITIONS=516} [2021-03-11 06:30:05,052 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 55 predicate places. [2021-03-11 06:30:05,052 INFO L480 AbstractCegarLoop]: Abstraction has has 110 places, 516 transitions, 9440 flow [2021-03-11 06:30:05,052 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:30:05,052 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:30:05,052 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:30:05,053 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-11 06:30:05,053 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 06:30:05,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:30:05,054 INFO L82 PathProgramCache]: Analyzing trace with hash -706991524, now seen corresponding path program 13 times [2021-03-11 06:30:05,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:30:05,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869145546] [2021-03-11 06:30:05,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:30:05,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:30:05,210 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:05,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:30:05,214 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:05,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:30:05,217 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:05,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:30:05,222 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:05,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:30:05,227 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:05,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:30:05,233 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:05,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:30:05,238 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:05,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:30:05,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 06:30:05,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869145546] [2021-03-11 06:30:05,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:30:05,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 06:30:05,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701160505] [2021-03-11 06:30:05,241 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 06:30:05,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:30:05,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 06:30:05,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-03-11 06:30:05,242 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-03-11 06:30:05,242 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 516 transitions, 9440 flow. Second operand has 8 states, 8 states have (on average 31.0) internal successors, (248), 8 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:30:05,242 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:30:05,242 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-03-11 06:30:05,242 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:30:08,402 INFO L129 PetriNetUnfolder]: 14541/26741 cut-off events. [2021-03-11 06:30:08,402 INFO L130 PetriNetUnfolder]: For 207934/220126 co-relation queries the response was YES. [2021-03-11 06:30:08,508 INFO L84 FinitePrefix]: Finished finitePrefix Result has 130727 conditions, 26741 events. 14541/26741 cut-off events. For 207934/220126 co-relation queries the response was YES. Maximal size of possible extension queue 2095. Compared 258102 event pairs, 2648 based on Foata normal form. 2781/27954 useless extension candidates. Maximal degree in co-relation 130130. Up to 5700 conditions per place. [2021-03-11 06:30:08,613 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 43 selfloop transitions, 490 changer transitions 0/560 dead transitions. [2021-03-11 06:30:08,613 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 560 transitions, 11204 flow [2021-03-11 06:30:08,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 06:30:08,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-11 06:30:08,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 321 transitions. [2021-03-11 06:30:08,614 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8722826086956522 [2021-03-11 06:30:08,614 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 321 transitions. [2021-03-11 06:30:08,614 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 321 transitions. [2021-03-11 06:30:08,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:30:08,614 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 321 transitions. [2021-03-11 06:30:08,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 40.125) internal successors, (321), 8 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:30:08,616 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 46.0) internal successors, (414), 9 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:30:08,616 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 46.0) internal successors, (414), 9 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:30:08,616 INFO L185 Difference]: Start difference. First operand has 110 places, 516 transitions, 9440 flow. Second operand 8 states and 321 transitions. [2021-03-11 06:30:08,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 560 transitions, 11204 flow [2021-03-11 06:30:08,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 560 transitions, 10945 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-11 06:30:08,949 INFO L241 Difference]: Finished difference. Result has 116 places, 536 transitions, 10706 flow [2021-03-11 06:30:08,950 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=9147, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=514, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=468, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10706, PETRI_PLACES=116, PETRI_TRANSITIONS=536} [2021-03-11 06:30:08,950 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 61 predicate places. [2021-03-11 06:30:08,950 INFO L480 AbstractCegarLoop]: Abstraction has has 116 places, 536 transitions, 10706 flow [2021-03-11 06:30:08,950 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 31.0) internal successors, (248), 8 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:30:08,950 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:30:08,950 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:30:08,950 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-03-11 06:30:08,950 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 06:30:08,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:30:08,951 INFO L82 PathProgramCache]: Analyzing trace with hash -677061964, now seen corresponding path program 14 times [2021-03-11 06:30:08,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:30:08,951 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196629486] [2021-03-11 06:30:08,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:30:08,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:30:08,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:08,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:30:08,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:08,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:30:08,983 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:08,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:30:08,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:08,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:30:08,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:08,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:30:08,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:08,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:30:08,990 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:08,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:30:08,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:08,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:30:08,992 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:08,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:30:08,999 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:08,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:30:08,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 06:30:09,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196629486] [2021-03-11 06:30:09,000 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:30:09,000 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-11 06:30:09,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138288281] [2021-03-11 06:30:09,000 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 06:30:09,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:30:09,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 06:30:09,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-03-11 06:30:09,001 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-03-11 06:30:09,001 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 536 transitions, 10706 flow. Second operand has 6 states, 6 states have (on average 31.666666666666668) internal successors, (190), 6 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:30:09,001 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:30:09,001 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-03-11 06:30:09,001 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:30:11,524 INFO L129 PetriNetUnfolder]: 11387/21881 cut-off events. [2021-03-11 06:30:11,525 INFO L130 PetriNetUnfolder]: For 184605/192654 co-relation queries the response was YES. [2021-03-11 06:30:11,636 INFO L84 FinitePrefix]: Finished finitePrefix Result has 110769 conditions, 21881 events. 11387/21881 cut-off events. For 184605/192654 co-relation queries the response was YES. Maximal size of possible extension queue 1662. Compared 214448 event pairs, 2643 based on Foata normal form. 3116/23749 useless extension candidates. Maximal degree in co-relation 110101. Up to 7753 conditions per place. [2021-03-11 06:30:11,737 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 148 selfloop transitions, 395 changer transitions 0/570 dead transitions. [2021-03-11 06:30:11,737 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 570 transitions, 11762 flow [2021-03-11 06:30:11,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-11 06:30:11,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-11 06:30:11,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 237 transitions. [2021-03-11 06:30:11,738 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8586956521739131 [2021-03-11 06:30:11,738 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 237 transitions. [2021-03-11 06:30:11,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 237 transitions. [2021-03-11 06:30:11,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:30:11,738 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 237 transitions. [2021-03-11 06:30:11,739 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 39.5) internal successors, (237), 6 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:30:11,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 46.0) internal successors, (322), 7 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:30:11,740 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 46.0) internal successors, (322), 7 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:30:11,740 INFO L185 Difference]: Start difference. First operand has 116 places, 536 transitions, 10706 flow. Second operand 6 states and 237 transitions. [2021-03-11 06:30:11,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 570 transitions, 11762 flow [2021-03-11 06:30:11,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 570 transitions, 11005 flow, removed 0 selfloop flow, removed 5 redundant places. [2021-03-11 06:30:11,947 INFO L241 Difference]: Finished difference. Result has 118 places, 531 transitions, 10610 flow [2021-03-11 06:30:11,947 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=8085, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=462, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=326, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=10610, PETRI_PLACES=118, PETRI_TRANSITIONS=531} [2021-03-11 06:30:11,948 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 63 predicate places. [2021-03-11 06:30:11,948 INFO L480 AbstractCegarLoop]: Abstraction has has 118 places, 531 transitions, 10610 flow [2021-03-11 06:30:11,948 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 31.666666666666668) internal successors, (190), 6 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:30:11,948 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:30:11,948 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:30:11,948 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-03-11 06:30:11,948 INFO L428 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 06:30:11,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:30:11,949 INFO L82 PathProgramCache]: Analyzing trace with hash -432555754, now seen corresponding path program 15 times [2021-03-11 06:30:11,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:30:11,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631364872] [2021-03-11 06:30:11,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:30:11,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:30:11,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:11,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:30:11,966 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:11,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:30:11,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:11,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:30:11,973 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:11,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:30:11,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:11,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:30:11,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:11,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:30:11,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:11,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:30:11,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:11,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:30:11,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 06:30:11,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631364872] [2021-03-11 06:30:11,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:30:11,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 06:30:11,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253787206] [2021-03-11 06:30:11,985 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 06:30:11,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:30:11,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 06:30:11,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-03-11 06:30:11,986 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-03-11 06:30:11,986 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 531 transitions, 10610 flow. Second operand has 7 states, 7 states have (on average 31.285714285714285) internal successors, (219), 7 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:30:11,986 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:30:11,986 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-03-11 06:30:11,986 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:30:14,685 INFO L129 PetriNetUnfolder]: 11983/23586 cut-off events. [2021-03-11 06:30:14,685 INFO L130 PetriNetUnfolder]: For 214499/223819 co-relation queries the response was YES. [2021-03-11 06:30:14,802 INFO L84 FinitePrefix]: Finished finitePrefix Result has 121613 conditions, 23586 events. 11983/23586 cut-off events. For 214499/223819 co-relation queries the response was YES. Maximal size of possible extension queue 1740. Compared 237995 event pairs, 2613 based on Foata normal form. 3866/26204 useless extension candidates. Maximal degree in co-relation 120839. Up to 8118 conditions per place. [2021-03-11 06:30:14,892 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 164 selfloop transitions, 478 changer transitions 3/672 dead transitions. [2021-03-11 06:30:14,892 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 672 transitions, 14154 flow [2021-03-11 06:30:14,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 06:30:14,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-11 06:30:14,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 320 transitions. [2021-03-11 06:30:14,893 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8695652173913043 [2021-03-11 06:30:14,893 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 320 transitions. [2021-03-11 06:30:14,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 320 transitions. [2021-03-11 06:30:14,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:30:14,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 320 transitions. [2021-03-11 06:30:14,894 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:30:14,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 46.0) internal successors, (414), 9 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:30:14,895 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 46.0) internal successors, (414), 9 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:30:14,895 INFO L185 Difference]: Start difference. First operand has 118 places, 531 transitions, 10610 flow. Second operand 8 states and 320 transitions. [2021-03-11 06:30:14,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 672 transitions, 14154 flow [2021-03-11 06:30:15,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 672 transitions, 13510 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-03-11 06:30:15,138 INFO L241 Difference]: Finished difference. Result has 123 places, 612 transitions, 12967 flow [2021-03-11 06:30:15,139 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=10067, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=530, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=394, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12967, PETRI_PLACES=123, PETRI_TRANSITIONS=612} [2021-03-11 06:30:15,139 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 68 predicate places. [2021-03-11 06:30:15,139 INFO L480 AbstractCegarLoop]: Abstraction has has 123 places, 612 transitions, 12967 flow [2021-03-11 06:30:15,139 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 31.285714285714285) internal successors, (219), 7 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:30:15,139 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:30:15,139 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:30:15,139 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-03-11 06:30:15,140 INFO L428 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 06:30:15,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:30:15,140 INFO L82 PathProgramCache]: Analyzing trace with hash 605000726, now seen corresponding path program 16 times [2021-03-11 06:30:15,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:30:15,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354894840] [2021-03-11 06:30:15,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:30:15,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:30:15,165 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:15,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:30:15,168 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:15,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:30:15,171 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:15,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:30:15,174 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:15,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:30:15,175 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:15,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:30:15,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:15,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:30:15,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:15,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:30:15,177 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:15,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:30:15,181 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:15,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:30:15,186 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:15,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:30:15,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 06:30:15,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354894840] [2021-03-11 06:30:15,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:30:15,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 06:30:15,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948179506] [2021-03-11 06:30:15,187 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 06:30:15,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:30:15,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 06:30:15,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-03-11 06:30:15,188 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-03-11 06:30:15,188 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 612 transitions, 12967 flow. Second operand has 7 states, 7 states have (on average 31.285714285714285) internal successors, (219), 7 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:30:15,188 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:30:15,188 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-03-11 06:30:15,188 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:30:18,157 INFO L129 PetriNetUnfolder]: 11464/22836 cut-off events. [2021-03-11 06:30:18,157 INFO L130 PetriNetUnfolder]: For 241467/251193 co-relation queries the response was YES. [2021-03-11 06:30:18,484 INFO L84 FinitePrefix]: Finished finitePrefix Result has 121762 conditions, 22836 events. 11464/22836 cut-off events. For 241467/251193 co-relation queries the response was YES. Maximal size of possible extension queue 1636. Compared 232440 event pairs, 2496 based on Foata normal form. 3529/25170 useless extension candidates. Maximal degree in co-relation 121047. Up to 7763 conditions per place. [2021-03-11 06:30:18,565 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 159 selfloop transitions, 560 changer transitions 2/748 dead transitions. [2021-03-11 06:30:18,565 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 748 transitions, 16761 flow [2021-03-11 06:30:18,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 06:30:18,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-11 06:30:18,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 320 transitions. [2021-03-11 06:30:18,567 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8695652173913043 [2021-03-11 06:30:18,567 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 320 transitions. [2021-03-11 06:30:18,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 320 transitions. [2021-03-11 06:30:18,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:30:18,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 320 transitions. [2021-03-11 06:30:18,568 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:30:18,568 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 46.0) internal successors, (414), 9 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:30:18,569 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 46.0) internal successors, (414), 9 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:30:18,569 INFO L185 Difference]: Start difference. First operand has 123 places, 612 transitions, 12967 flow. Second operand 8 states and 320 transitions. [2021-03-11 06:30:18,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 748 transitions, 16761 flow [2021-03-11 06:30:18,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 748 transitions, 16016 flow, removed 16 selfloop flow, removed 4 redundant places. [2021-03-11 06:30:18,930 INFO L241 Difference]: Finished difference. Result has 129 places, 697 transitions, 15676 flow [2021-03-11 06:30:18,931 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=12276, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=609, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=470, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15676, PETRI_PLACES=129, PETRI_TRANSITIONS=697} [2021-03-11 06:30:18,931 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 74 predicate places. [2021-03-11 06:30:18,931 INFO L480 AbstractCegarLoop]: Abstraction has has 129 places, 697 transitions, 15676 flow [2021-03-11 06:30:18,931 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 31.285714285714285) internal successors, (219), 7 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:30:18,931 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:30:18,931 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:30:18,931 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-03-11 06:30:18,931 INFO L428 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 06:30:18,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:30:18,932 INFO L82 PathProgramCache]: Analyzing trace with hash 622395338, now seen corresponding path program 17 times [2021-03-11 06:30:18,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:30:18,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033438409] [2021-03-11 06:30:18,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:30:18,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:30:18,947 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:18,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:30:18,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:18,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:30:18,953 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:18,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:30:18,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:18,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:30:18,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:18,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:30:18,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:18,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:30:18,961 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:18,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:30:18,966 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:18,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:30:18,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 06:30:18,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033438409] [2021-03-11 06:30:18,967 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:30:18,967 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 06:30:18,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395162607] [2021-03-11 06:30:18,967 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 06:30:18,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:30:18,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 06:30:18,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-03-11 06:30:18,968 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-03-11 06:30:18,968 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 697 transitions, 15676 flow. Second operand has 7 states, 7 states have (on average 31.285714285714285) internal successors, (219), 7 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:30:18,968 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:30:18,968 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-03-11 06:30:18,968 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:30:21,754 INFO L129 PetriNetUnfolder]: 9761/20408 cut-off events. [2021-03-11 06:30:21,754 INFO L130 PetriNetUnfolder]: For 218676/226581 co-relation queries the response was YES. [2021-03-11 06:30:21,849 INFO L84 FinitePrefix]: Finished finitePrefix Result has 110412 conditions, 20408 events. 9761/20408 cut-off events. For 218676/226581 co-relation queries the response was YES. Maximal size of possible extension queue 1443. Compared 212468 event pairs, 2232 based on Foata normal form. 3345/22788 useless extension candidates. Maximal degree in co-relation 109720. Up to 7378 conditions per place. [2021-03-11 06:30:21,923 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 164 selfloop transitions, 626 changer transitions 35/852 dead transitions. [2021-03-11 06:30:21,924 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 852 transitions, 20168 flow [2021-03-11 06:30:21,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 06:30:21,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-11 06:30:21,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 320 transitions. [2021-03-11 06:30:21,925 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8695652173913043 [2021-03-11 06:30:21,925 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 320 transitions. [2021-03-11 06:30:21,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 320 transitions. [2021-03-11 06:30:21,925 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:30:21,925 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 320 transitions. [2021-03-11 06:30:21,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:30:21,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 46.0) internal successors, (414), 9 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:30:21,927 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 46.0) internal successors, (414), 9 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:30:21,927 INFO L185 Difference]: Start difference. First operand has 129 places, 697 transitions, 15676 flow. Second operand 8 states and 320 transitions. [2021-03-11 06:30:21,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 852 transitions, 20168 flow [2021-03-11 06:30:22,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 852 transitions, 19933 flow, removed 19 selfloop flow, removed 3 redundant places. [2021-03-11 06:30:22,353 INFO L241 Difference]: Finished difference. Result has 135 places, 761 transitions, 18187 flow [2021-03-11 06:30:22,353 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=15265, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=688, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=523, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=18187, PETRI_PLACES=135, PETRI_TRANSITIONS=761} [2021-03-11 06:30:22,354 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 80 predicate places. [2021-03-11 06:30:22,354 INFO L480 AbstractCegarLoop]: Abstraction has has 135 places, 761 transitions, 18187 flow [2021-03-11 06:30:22,354 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 31.285714285714285) internal successors, (219), 7 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:30:22,354 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:30:22,354 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:30:22,354 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-03-11 06:30:22,354 INFO L428 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 06:30:22,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:30:22,354 INFO L82 PathProgramCache]: Analyzing trace with hash 988274950, now seen corresponding path program 18 times [2021-03-11 06:30:22,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:30:22,355 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644378624] [2021-03-11 06:30:22,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:30:22,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:30:22,377 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:22,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:30:22,380 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:22,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:30:22,383 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:22,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:30:22,387 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:22,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:30:22,391 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:22,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:30:22,399 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:22,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:30:22,400 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:22,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:30:22,405 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:22,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:30:22,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:22,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:30:22,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 06:30:22,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644378624] [2021-03-11 06:30:22,418 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:30:22,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 06:30:22,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650943075] [2021-03-11 06:30:22,419 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 06:30:22,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:30:22,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 06:30:22,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-03-11 06:30:22,420 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-03-11 06:30:22,420 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 761 transitions, 18187 flow. Second operand has 9 states, 9 states have (on average 30.77777777777778) internal successors, (277), 9 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:30:22,420 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:30:22,420 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-03-11 06:30:22,420 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:30:25,530 INFO L129 PetriNetUnfolder]: 9961/20562 cut-off events. [2021-03-11 06:30:25,531 INFO L130 PetriNetUnfolder]: For 259633/268326 co-relation queries the response was YES. [2021-03-11 06:30:25,626 INFO L84 FinitePrefix]: Finished finitePrefix Result has 117704 conditions, 20562 events. 9961/20562 cut-off events. For 259633/268326 co-relation queries the response was YES. Maximal size of possible extension queue 1427. Compared 212849 event pairs, 1947 based on Foata normal form. 3288/22839 useless extension candidates. Maximal degree in co-relation 117136. Up to 3920 conditions per place. [2021-03-11 06:30:25,701 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 59 selfloop transitions, 873 changer transitions 0/959 dead transitions. [2021-03-11 06:30:25,701 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 959 transitions, 24464 flow [2021-03-11 06:30:25,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-11 06:30:25,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-11 06:30:25,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 408 transitions. [2021-03-11 06:30:25,703 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8869565217391304 [2021-03-11 06:30:25,703 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 408 transitions. [2021-03-11 06:30:25,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 408 transitions. [2021-03-11 06:30:25,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:30:25,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 408 transitions. [2021-03-11 06:30:25,704 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 40.8) internal successors, (408), 10 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:30:25,704 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 46.0) internal successors, (506), 11 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:30:25,705 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 46.0) internal successors, (506), 11 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:30:25,705 INFO L185 Difference]: Start difference. First operand has 135 places, 761 transitions, 18187 flow. Second operand 10 states and 408 transitions. [2021-03-11 06:30:25,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 959 transitions, 24464 flow [2021-03-11 06:30:26,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 959 transitions, 23650 flow, removed 15 selfloop flow, removed 4 redundant places. [2021-03-11 06:30:26,157 INFO L241 Difference]: Finished difference. Result has 142 places, 919 transitions, 23465 flow [2021-03-11 06:30:26,158 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=17481, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=759, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=713, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=23465, PETRI_PLACES=142, PETRI_TRANSITIONS=919} [2021-03-11 06:30:26,158 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 87 predicate places. [2021-03-11 06:30:26,158 INFO L480 AbstractCegarLoop]: Abstraction has has 142 places, 919 transitions, 23465 flow [2021-03-11 06:30:26,158 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 30.77777777777778) internal successors, (277), 9 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:30:26,158 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:30:26,158 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:30:26,158 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-03-11 06:30:26,158 INFO L428 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 06:30:26,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:30:26,159 INFO L82 PathProgramCache]: Analyzing trace with hash -1884166598, now seen corresponding path program 19 times [2021-03-11 06:30:26,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:30:26,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327178490] [2021-03-11 06:30:26,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:30:26,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:30:26,172 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:26,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:30:26,174 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:26,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:30:26,177 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:26,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:30:26,181 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:26,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:30:26,181 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:26,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:30:26,182 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:26,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:30:26,182 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:26,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:30:26,183 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:26,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:30:26,187 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:26,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:30:26,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:26,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:30:26,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 06:30:26,192 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327178490] [2021-03-11 06:30:26,193 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:30:26,193 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 06:30:26,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412509722] [2021-03-11 06:30:26,193 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 06:30:26,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:30:26,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 06:30:26,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-03-11 06:30:26,194 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-03-11 06:30:26,194 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 919 transitions, 23465 flow. Second operand has 7 states, 7 states have (on average 31.285714285714285) internal successors, (219), 7 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:30:26,194 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:30:26,194 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-03-11 06:30:26,194 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:30:29,429 INFO L129 PetriNetUnfolder]: 8251/18165 cut-off events. [2021-03-11 06:30:29,430 INFO L130 PetriNetUnfolder]: For 243332/248470 co-relation queries the response was YES. [2021-03-11 06:30:29,515 INFO L84 FinitePrefix]: Finished finitePrefix Result has 109265 conditions, 18165 events. 8251/18165 cut-off events. For 243332/248470 co-relation queries the response was YES. Maximal size of possible extension queue 1176. Compared 192570 event pairs, 2289 based on Foata normal form. 2007/19389 useless extension candidates. Maximal degree in co-relation 108635. Up to 6335 conditions per place. [2021-03-11 06:30:29,591 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 180 selfloop transitions, 889 changer transitions 0/1096 dead transitions. [2021-03-11 06:30:29,591 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 1096 transitions, 29560 flow [2021-03-11 06:30:29,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 06:30:29,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-11 06:30:29,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 320 transitions. [2021-03-11 06:30:29,592 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8695652173913043 [2021-03-11 06:30:29,593 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 320 transitions. [2021-03-11 06:30:29,593 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 320 transitions. [2021-03-11 06:30:29,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:30:29,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 320 transitions. [2021-03-11 06:30:29,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:30:29,594 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 46.0) internal successors, (414), 9 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:30:29,594 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 46.0) internal successors, (414), 9 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:30:29,594 INFO L185 Difference]: Start difference. First operand has 142 places, 919 transitions, 23465 flow. Second operand 8 states and 320 transitions. [2021-03-11 06:30:29,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 1096 transitions, 29560 flow [2021-03-11 06:30:30,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 1096 transitions, 29073 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-11 06:30:30,163 INFO L241 Difference]: Finished difference. Result has 148 places, 1043 transitions, 28568 flow [2021-03-11 06:30:30,164 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=22828, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=911, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=757, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=28568, PETRI_PLACES=148, PETRI_TRANSITIONS=1043} [2021-03-11 06:30:30,164 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 93 predicate places. [2021-03-11 06:30:30,164 INFO L480 AbstractCegarLoop]: Abstraction has has 148 places, 1043 transitions, 28568 flow [2021-03-11 06:30:30,164 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 31.285714285714285) internal successors, (219), 7 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:30:30,164 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:30:30,164 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:30:30,164 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-03-11 06:30:30,164 INFO L428 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 06:30:30,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:30:30,165 INFO L82 PathProgramCache]: Analyzing trace with hash -223156058, now seen corresponding path program 20 times [2021-03-11 06:30:30,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:30:30,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453772652] [2021-03-11 06:30:30,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:30:30,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:30:30,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:30,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:30:30,179 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:30,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:30:30,182 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:30,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:30:30,186 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:30,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:30:30,190 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:30,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:30:30,194 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:30,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:30:30,199 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:30,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:30:30,205 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:30,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:30:30,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 06:30:30,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453772652] [2021-03-11 06:30:30,206 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:30:30,206 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 06:30:30,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895396517] [2021-03-11 06:30:30,206 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 06:30:30,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:30:30,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 06:30:30,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-03-11 06:30:30,207 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-03-11 06:30:30,207 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 1043 transitions, 28568 flow. Second operand has 9 states, 9 states have (on average 30.77777777777778) internal successors, (277), 9 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:30:30,208 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:30:30,208 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-03-11 06:30:30,208 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:30:33,768 INFO L129 PetriNetUnfolder]: 8293/18425 cut-off events. [2021-03-11 06:30:33,768 INFO L130 PetriNetUnfolder]: For 273795/278370 co-relation queries the response was YES. [2021-03-11 06:30:33,861 INFO L84 FinitePrefix]: Finished finitePrefix Result has 115062 conditions, 18425 events. 8293/18425 cut-off events. For 273795/278370 co-relation queries the response was YES. Maximal size of possible extension queue 1238. Compared 197525 event pairs, 1923 based on Foata normal form. 2154/19767 useless extension candidates. Maximal degree in co-relation 114434. Up to 3697 conditions per place. [2021-03-11 06:30:33,928 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 118 selfloop transitions, 1020 changer transitions 10/1175 dead transitions. [2021-03-11 06:30:33,928 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 1175 transitions, 32825 flow [2021-03-11 06:30:33,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-03-11 06:30:33,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-03-11 06:30:33,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 488 transitions. [2021-03-11 06:30:33,929 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8840579710144928 [2021-03-11 06:30:33,929 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 488 transitions. [2021-03-11 06:30:33,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 488 transitions. [2021-03-11 06:30:33,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:30:33,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 488 transitions. [2021-03-11 06:30:33,930 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 40.666666666666664) internal successors, (488), 12 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:30:33,931 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 46.0) internal successors, (598), 13 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:30:33,931 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 46.0) internal successors, (598), 13 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:30:33,931 INFO L185 Difference]: Start difference. First operand has 148 places, 1043 transitions, 28568 flow. Second operand 12 states and 488 transitions. [2021-03-11 06:30:33,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 1175 transitions, 32825 flow [2021-03-11 06:30:34,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 1175 transitions, 32610 flow, removed 19 selfloop flow, removed 2 redundant places. [2021-03-11 06:30:34,942 INFO L241 Difference]: Finished difference. Result has 160 places, 1101 transitions, 31738 flow [2021-03-11 06:30:34,943 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=28377, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1043, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=952, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=31738, PETRI_PLACES=160, PETRI_TRANSITIONS=1101} [2021-03-11 06:30:34,943 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 105 predicate places. [2021-03-11 06:30:34,943 INFO L480 AbstractCegarLoop]: Abstraction has has 160 places, 1101 transitions, 31738 flow [2021-03-11 06:30:34,943 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 30.77777777777778) internal successors, (277), 9 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:30:34,943 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:30:34,943 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:30:34,943 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-03-11 06:30:34,943 INFO L428 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 06:30:34,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:30:34,944 INFO L82 PathProgramCache]: Analyzing trace with hash -731285598, now seen corresponding path program 21 times [2021-03-11 06:30:34,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:30:34,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389836760] [2021-03-11 06:30:34,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:30:34,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:30:34,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:34,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:30:34,977 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:34,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:30:34,982 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:34,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:30:34,986 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:34,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:30:34,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:34,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:30:34,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:34,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:30:34,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:34,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 06:30:34,992 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:34,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:30:34,992 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:34,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:30:34,997 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:34,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:30:34,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 06:30:34,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389836760] [2021-03-11 06:30:34,998 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:30:34,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 06:30:34,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970295818] [2021-03-11 06:30:34,998 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 06:30:34,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:30:34,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 06:30:34,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-11 06:30:34,999 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-03-11 06:30:34,999 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 1101 transitions, 31738 flow. Second operand has 7 states, 7 states have (on average 31.285714285714285) internal successors, (219), 7 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:30:34,999 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:30:34,999 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-03-11 06:30:34,999 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:30:39,073 INFO L129 PetriNetUnfolder]: 9526/20802 cut-off events. [2021-03-11 06:30:39,073 INFO L130 PetriNetUnfolder]: For 347542/352227 co-relation queries the response was YES. [2021-03-11 06:30:39,189 INFO L84 FinitePrefix]: Finished finitePrefix Result has 131266 conditions, 20802 events. 9526/20802 cut-off events. For 347542/352227 co-relation queries the response was YES. Maximal size of possible extension queue 1399. Compared 224933 event pairs, 1240 based on Foata normal form. 1673/21439 useless extension candidates. Maximal degree in co-relation 130635. Up to 5215 conditions per place. [2021-03-11 06:30:39,269 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 112 selfloop transitions, 1056 changer transitions 0/1195 dead transitions. [2021-03-11 06:30:39,269 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 1195 transitions, 35328 flow [2021-03-11 06:30:39,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 06:30:39,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 06:30:39,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 281 transitions. [2021-03-11 06:30:39,270 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8726708074534162 [2021-03-11 06:30:39,270 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 281 transitions. [2021-03-11 06:30:39,270 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 281 transitions. [2021-03-11 06:30:39,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:30:39,271 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 281 transitions. [2021-03-11 06:30:39,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 40.142857142857146) internal successors, (281), 7 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:30:39,272 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 46.0) internal successors, (368), 8 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:30:39,272 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 46.0) internal successors, (368), 8 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:30:39,272 INFO L185 Difference]: Start difference. First operand has 160 places, 1101 transitions, 31738 flow. Second operand 7 states and 281 transitions. [2021-03-11 06:30:39,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 1195 transitions, 35328 flow [2021-03-11 06:30:40,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 1195 transitions, 33204 flow, removed 10 selfloop flow, removed 9 redundant places. [2021-03-11 06:30:40,462 INFO L241 Difference]: Finished difference. Result has 160 places, 1151 transitions, 34085 flow [2021-03-11 06:30:40,462 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=29660, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1012, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=34085, PETRI_PLACES=160, PETRI_TRANSITIONS=1151} [2021-03-11 06:30:40,462 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 105 predicate places. [2021-03-11 06:30:40,463 INFO L480 AbstractCegarLoop]: Abstraction has has 160 places, 1151 transitions, 34085 flow [2021-03-11 06:30:40,463 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 31.285714285714285) internal successors, (219), 7 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:30:40,463 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:30:40,463 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:30:40,463 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-03-11 06:30:40,463 INFO L428 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 06:30:40,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:30:40,464 INFO L82 PathProgramCache]: Analyzing trace with hash -784741654, now seen corresponding path program 22 times [2021-03-11 06:30:40,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:30:40,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647555405] [2021-03-11 06:30:40,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:30:40,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:30:40,476 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:40,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:30:40,478 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:40,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:30:40,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:40,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:30:40,484 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:40,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:30:40,489 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:40,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:30:40,493 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:40,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:30:40,494 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:40,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:30:40,498 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:40,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:30:40,504 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:40,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:30:40,510 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:40,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:30:40,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 06:30:40,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647555405] [2021-03-11 06:30:40,511 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:30:40,511 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-11 06:30:40,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066595255] [2021-03-11 06:30:40,511 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-11 06:30:40,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:30:40,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-11 06:30:40,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-03-11 06:30:40,512 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-03-11 06:30:40,512 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 1151 transitions, 34085 flow. Second operand has 10 states, 10 states have (on average 30.6) internal successors, (306), 10 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:30:40,512 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:30:40,512 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-03-11 06:30:40,512 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:30:45,266 INFO L129 PetriNetUnfolder]: 9509/21103 cut-off events. [2021-03-11 06:30:45,266 INFO L130 PetriNetUnfolder]: For 388891/392625 co-relation queries the response was YES. [2021-03-11 06:30:45,374 INFO L84 FinitePrefix]: Finished finitePrefix Result has 142002 conditions, 21103 events. 9509/21103 cut-off events. For 388891/392625 co-relation queries the response was YES. Maximal size of possible extension queue 1535. Compared 232499 event pairs, 1759 based on Foata normal form. 1707/21870 useless extension candidates. Maximal degree in co-relation 141406. Up to 4868 conditions per place. [2021-03-11 06:30:45,446 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 101 selfloop transitions, 995 changer transitions 179/1302 dead transitions. [2021-03-11 06:30:45,446 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 1302 transitions, 39217 flow [2021-03-11 06:30:45,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-11 06:30:45,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-11 06:30:45,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 527 transitions. [2021-03-11 06:30:45,447 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8812709030100334 [2021-03-11 06:30:45,447 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 527 transitions. [2021-03-11 06:30:45,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 527 transitions. [2021-03-11 06:30:45,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:30:45,447 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 527 transitions. [2021-03-11 06:30:45,448 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 40.53846153846154) internal successors, (527), 13 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:30:45,448 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 46.0) internal successors, (644), 14 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:30:45,448 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 46.0) internal successors, (644), 14 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:30:45,448 INFO L185 Difference]: Start difference. First operand has 160 places, 1151 transitions, 34085 flow. Second operand 13 states and 527 transitions. [2021-03-11 06:30:45,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 1302 transitions, 39217 flow [2021-03-11 06:30:47,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 1302 transitions, 37673 flow, removed 56 selfloop flow, removed 6 redundant places. [2021-03-11 06:30:47,182 INFO L241 Difference]: Finished difference. Result has 168 places, 1071 transitions, 31453 flow [2021-03-11 06:30:47,183 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=32655, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=913, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=31453, PETRI_PLACES=168, PETRI_TRANSITIONS=1071} [2021-03-11 06:30:47,183 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 113 predicate places. [2021-03-11 06:30:47,184 INFO L480 AbstractCegarLoop]: Abstraction has has 168 places, 1071 transitions, 31453 flow [2021-03-11 06:30:47,184 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 30.6) internal successors, (306), 10 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:30:47,184 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:30:47,184 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:30:47,184 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-03-11 06:30:47,184 INFO L428 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 06:30:47,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:30:47,184 INFO L82 PathProgramCache]: Analyzing trace with hash 534528952, now seen corresponding path program 23 times [2021-03-11 06:30:47,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:30:47,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701030310] [2021-03-11 06:30:47,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:30:47,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:30:47,197 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:47,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:30:47,199 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:47,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:30:47,202 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:47,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:30:47,206 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:47,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:30:47,206 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:47,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:30:47,209 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:47,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:30:47,210 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:47,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 06:30:47,214 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:47,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:30:47,215 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:47,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:30:47,220 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:47,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:30:47,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 06:30:47,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701030310] [2021-03-11 06:30:47,221 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:30:47,221 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 06:30:47,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912496995] [2021-03-11 06:30:47,221 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 06:30:47,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:30:47,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 06:30:47,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-11 06:30:47,222 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-03-11 06:30:47,222 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 1071 transitions, 31453 flow. Second operand has 7 states, 7 states have (on average 31.285714285714285) internal successors, (219), 7 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:30:47,222 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:30:47,222 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-03-11 06:30:47,222 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:30:51,346 INFO L129 PetriNetUnfolder]: 8512/19287 cut-off events. [2021-03-11 06:30:51,347 INFO L130 PetriNetUnfolder]: For 383951/388314 co-relation queries the response was YES. [2021-03-11 06:30:51,450 INFO L84 FinitePrefix]: Finished finitePrefix Result has 131618 conditions, 19287 events. 8512/19287 cut-off events. For 383951/388314 co-relation queries the response was YES. Maximal size of possible extension queue 1347. Compared 212997 event pairs, 1126 based on Foata normal form. 1488/19945 useless extension candidates. Maximal degree in co-relation 131040. Up to 4633 conditions per place. [2021-03-11 06:30:51,524 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 121 selfloop transitions, 952 changer transitions 10/1110 dead transitions. [2021-03-11 06:30:51,524 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 1110 transitions, 34048 flow [2021-03-11 06:30:51,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 06:30:51,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 06:30:51,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 281 transitions. [2021-03-11 06:30:51,525 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8726708074534162 [2021-03-11 06:30:51,525 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 281 transitions. [2021-03-11 06:30:51,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 281 transitions. [2021-03-11 06:30:51,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:30:51,525 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 281 transitions. [2021-03-11 06:30:51,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 40.142857142857146) internal successors, (281), 7 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:30:51,526 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 46.0) internal successors, (368), 8 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:30:51,526 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 46.0) internal successors, (368), 8 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:30:51,526 INFO L185 Difference]: Start difference. First operand has 168 places, 1071 transitions, 31453 flow. Second operand 7 states and 281 transitions. [2021-03-11 06:30:51,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 1110 transitions, 34048 flow [2021-03-11 06:30:53,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 1110 transitions, 32586 flow, removed 1 selfloop flow, removed 8 redundant places. [2021-03-11 06:30:53,500 INFO L241 Difference]: Finished difference. Result has 168 places, 1069 transitions, 32316 flow [2021-03-11 06:30:53,501 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=30001, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1071, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=944, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=32316, PETRI_PLACES=168, PETRI_TRANSITIONS=1069} [2021-03-11 06:30:53,501 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 113 predicate places. [2021-03-11 06:30:53,501 INFO L480 AbstractCegarLoop]: Abstraction has has 168 places, 1069 transitions, 32316 flow [2021-03-11 06:30:53,501 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 31.285714285714285) internal successors, (219), 7 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:30:53,501 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:30:53,501 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:30:53,501 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-03-11 06:30:53,501 INFO L428 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 06:30:53,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:30:53,502 INFO L82 PathProgramCache]: Analyzing trace with hash 345165006, now seen corresponding path program 24 times [2021-03-11 06:30:53,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:30:53,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061596891] [2021-03-11 06:30:53,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:30:53,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:30:53,520 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:53,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:30:53,522 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:53,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:30:53,525 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:53,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:30:53,529 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:53,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:30:53,535 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:53,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:30:53,539 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:53,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:30:53,540 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:53,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:30:53,544 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:53,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:30:53,549 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:53,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:30:53,554 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:53,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:30:53,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 06:30:53,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061596891] [2021-03-11 06:30:53,555 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:30:53,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-11 06:30:53,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909672800] [2021-03-11 06:30:53,555 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-11 06:30:53,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:30:53,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-11 06:30:53,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-03-11 06:30:53,556 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-03-11 06:30:53,556 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 1069 transitions, 32316 flow. Second operand has 10 states, 10 states have (on average 30.6) internal successors, (306), 10 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:30:53,556 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:30:53,556 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-03-11 06:30:53,556 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:30:57,704 INFO L129 PetriNetUnfolder]: 8406/19201 cut-off events. [2021-03-11 06:30:57,704 INFO L130 PetriNetUnfolder]: For 406487/411517 co-relation queries the response was YES. [2021-03-11 06:30:57,818 INFO L84 FinitePrefix]: Finished finitePrefix Result has 138959 conditions, 19201 events. 8406/19201 cut-off events. For 406487/411517 co-relation queries the response was YES. Maximal size of possible extension queue 1337. Compared 212560 event pairs, 1598 based on Foata normal form. 1375/19792 useless extension candidates. Maximal degree in co-relation 138390. Up to 4511 conditions per place. [2021-03-11 06:30:57,893 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 113 selfloop transitions, 983 changer transitions 23/1146 dead transitions. [2021-03-11 06:30:57,893 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 1146 transitions, 35515 flow [2021-03-11 06:30:57,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-11 06:30:57,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-11 06:30:57,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 530 transitions. [2021-03-11 06:30:57,895 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8862876254180602 [2021-03-11 06:30:57,895 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 530 transitions. [2021-03-11 06:30:57,895 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 530 transitions. [2021-03-11 06:30:57,895 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:30:57,895 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 530 transitions. [2021-03-11 06:30:57,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 40.76923076923077) internal successors, (530), 13 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:30:57,896 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 46.0) internal successors, (644), 14 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:30:57,897 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 46.0) internal successors, (644), 14 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:30:57,897 INFO L185 Difference]: Start difference. First operand has 168 places, 1069 transitions, 32316 flow. Second operand 13 states and 530 transitions. [2021-03-11 06:30:57,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 1146 transitions, 35515 flow [2021-03-11 06:30:59,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 1146 transitions, 34896 flow, removed 11 selfloop flow, removed 4 redundant places. [2021-03-11 06:30:59,805 INFO L241 Difference]: Finished difference. Result has 177 places, 1067 transitions, 33315 flow [2021-03-11 06:30:59,805 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=31729, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1069, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=962, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=33315, PETRI_PLACES=177, PETRI_TRANSITIONS=1067} [2021-03-11 06:30:59,805 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 122 predicate places. [2021-03-11 06:30:59,806 INFO L480 AbstractCegarLoop]: Abstraction has has 177 places, 1067 transitions, 33315 flow [2021-03-11 06:30:59,806 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 30.6) internal successors, (306), 10 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:30:59,806 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:30:59,806 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:30:59,806 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-03-11 06:30:59,806 INFO L428 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 06:30:59,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:30:59,806 INFO L82 PathProgramCache]: Analyzing trace with hash 1339343546, now seen corresponding path program 25 times [2021-03-11 06:30:59,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:30:59,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745117892] [2021-03-11 06:30:59,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:30:59,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:30:59,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:59,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:30:59,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:59,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:30:59,822 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:59,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:30:59,825 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:59,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:30:59,826 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:59,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 06:30:59,829 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:59,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:30:59,830 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:59,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 06:30:59,830 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:59,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:30:59,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:59,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:30:59,836 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:30:59,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:30:59,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 06:30:59,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745117892] [2021-03-11 06:30:59,837 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:30:59,837 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 06:30:59,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399545983] [2021-03-11 06:30:59,837 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 06:30:59,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:30:59,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 06:30:59,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-11 06:30:59,838 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-03-11 06:30:59,838 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 1067 transitions, 33315 flow. Second operand has 7 states, 7 states have (on average 31.285714285714285) internal successors, (219), 7 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:30:59,838 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:30:59,838 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-03-11 06:30:59,838 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:31:03,833 INFO L129 PetriNetUnfolder]: 7758/18061 cut-off events. [2021-03-11 06:31:03,833 INFO L130 PetriNetUnfolder]: For 442873/447437 co-relation queries the response was YES. [2021-03-11 06:31:03,917 INFO L84 FinitePrefix]: Finished finitePrefix Result has 136433 conditions, 18061 events. 7758/18061 cut-off events. For 442873/447437 co-relation queries the response was YES. Maximal size of possible extension queue 1215. Compared 200064 event pairs, 961 based on Foata normal form. 1542/18917 useless extension candidates. Maximal degree in co-relation 135829. Up to 4262 conditions per place. [2021-03-11 06:31:03,983 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 153 selfloop transitions, 978 changer transitions 1/1159 dead transitions. [2021-03-11 06:31:03,983 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 1159 transitions, 37331 flow [2021-03-11 06:31:03,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 06:31:03,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 06:31:03,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 281 transitions. [2021-03-11 06:31:03,984 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8726708074534162 [2021-03-11 06:31:03,984 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 281 transitions. [2021-03-11 06:31:03,984 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 281 transitions. [2021-03-11 06:31:03,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:31:03,984 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 281 transitions. [2021-03-11 06:31:03,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 40.142857142857146) internal successors, (281), 7 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:31:03,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 46.0) internal successors, (368), 8 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:31:03,985 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 46.0) internal successors, (368), 8 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:31:03,985 INFO L185 Difference]: Start difference. First operand has 177 places, 1067 transitions, 33315 flow. Second operand 7 states and 281 transitions. [2021-03-11 06:31:03,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 1159 transitions, 37331 flow [2021-03-11 06:31:05,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 1159 transitions, 35822 flow, removed 6 selfloop flow, removed 8 redundant places. [2021-03-11 06:31:05,536 INFO L241 Difference]: Finished difference. Result has 177 places, 1098 transitions, 35353 flow [2021-03-11 06:31:05,537 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=31902, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1067, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=947, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=35353, PETRI_PLACES=177, PETRI_TRANSITIONS=1098} [2021-03-11 06:31:05,537 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 122 predicate places. [2021-03-11 06:31:05,537 INFO L480 AbstractCegarLoop]: Abstraction has has 177 places, 1098 transitions, 35353 flow [2021-03-11 06:31:05,537 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 31.285714285714285) internal successors, (219), 7 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:31:05,537 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:31:05,537 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:31:05,537 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-03-11 06:31:05,537 INFO L428 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 06:31:05,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:31:05,537 INFO L82 PathProgramCache]: Analyzing trace with hash -359396204, now seen corresponding path program 26 times [2021-03-11 06:31:05,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:31:05,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004112894] [2021-03-11 06:31:05,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:31:05,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:31:05,549 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:31:05,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:31:05,551 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:31:05,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:31:05,554 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:31:05,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:31:05,557 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:31:05,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:31:05,561 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:31:05,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:31:05,566 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:31:05,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:31:05,570 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:31:05,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:31:05,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:31:05,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:31:05,580 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:31:05,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:31:05,587 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:31:05,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:31:05,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 06:31:05,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004112894] [2021-03-11 06:31:05,587 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:31:05,587 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-11 06:31:05,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126155801] [2021-03-11 06:31:05,588 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-11 06:31:05,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:31:05,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-11 06:31:05,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-03-11 06:31:05,588 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-03-11 06:31:05,589 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 1098 transitions, 35353 flow. Second operand has 11 states, 11 states have (on average 30.454545454545453) internal successors, (335), 11 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:31:05,589 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:31:05,589 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-03-11 06:31:05,589 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:31:09,927 INFO L129 PetriNetUnfolder]: 7769/18111 cut-off events. [2021-03-11 06:31:09,927 INFO L130 PetriNetUnfolder]: For 473055/477350 co-relation queries the response was YES. [2021-03-11 06:31:10,036 INFO L84 FinitePrefix]: Finished finitePrefix Result has 142811 conditions, 18111 events. 7769/18111 cut-off events. For 473055/477350 co-relation queries the response was YES. Maximal size of possible extension queue 1235. Compared 201015 event pairs, 1304 based on Foata normal form. 1436/18892 useless extension candidates. Maximal degree in co-relation 142272. Up to 3751 conditions per place. [2021-03-11 06:31:10,110 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 139 selfloop transitions, 989 changer transitions 17/1172 dead transitions. [2021-03-11 06:31:10,110 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 1172 transitions, 38498 flow [2021-03-11 06:31:10,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-03-11 06:31:10,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-03-11 06:31:10,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 675 transitions. [2021-03-11 06:31:10,111 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8631713554987213 [2021-03-11 06:31:10,111 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 675 transitions. [2021-03-11 06:31:10,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 675 transitions. [2021-03-11 06:31:10,111 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:31:10,111 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 675 transitions. [2021-03-11 06:31:10,112 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 39.705882352941174) internal successors, (675), 17 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:31:10,113 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 46.0) internal successors, (828), 18 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:31:10,113 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 46.0) internal successors, (828), 18 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:31:10,114 INFO L185 Difference]: Start difference. First operand has 177 places, 1098 transitions, 35353 flow. Second operand 17 states and 675 transitions. [2021-03-11 06:31:10,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 1172 transitions, 38498 flow [2021-03-11 06:31:11,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 1172 transitions, 37001 flow, removed 30 selfloop flow, removed 6 redundant places. [2021-03-11 06:31:11,982 INFO L241 Difference]: Finished difference. Result has 188 places, 1086 transitions, 35425 flow [2021-03-11 06:31:11,982 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=33918, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1098, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=985, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=35425, PETRI_PLACES=188, PETRI_TRANSITIONS=1086} [2021-03-11 06:31:11,983 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 133 predicate places. [2021-03-11 06:31:11,983 INFO L480 AbstractCegarLoop]: Abstraction has has 188 places, 1086 transitions, 35425 flow [2021-03-11 06:31:11,983 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 30.454545454545453) internal successors, (335), 11 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:31:11,983 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:31:11,983 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:31:11,983 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-03-11 06:31:11,983 INFO L428 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 06:31:11,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:31:11,983 INFO L82 PathProgramCache]: Analyzing trace with hash -2116240226, now seen corresponding path program 27 times [2021-03-11 06:31:11,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:31:11,983 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747456885] [2021-03-11 06:31:11,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:31:11,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:31:11,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:31:11,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:31:11,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:31:11,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:31:12,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:31:12,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:31:12,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:31:12,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:31:12,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:31:12,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:31:12,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:31:12,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:31:12,010 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:31:12,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:31:12,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:31:12,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:31:12,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:31:12,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:31:12,016 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:31:12,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:31:12,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 06:31:12,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747456885] [2021-03-11 06:31:12,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:31:12,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 06:31:12,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087412568] [2021-03-11 06:31:12,017 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 06:31:12,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:31:12,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 06:31:12,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-03-11 06:31:12,017 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-03-11 06:31:12,017 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 1086 transitions, 35425 flow. Second operand has 7 states, 7 states have (on average 31.285714285714285) internal successors, (219), 7 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:31:12,018 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:31:12,018 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-03-11 06:31:12,018 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:31:16,051 INFO L129 PetriNetUnfolder]: 7582/17898 cut-off events. [2021-03-11 06:31:16,052 INFO L130 PetriNetUnfolder]: For 468082/471889 co-relation queries the response was YES. [2021-03-11 06:31:16,153 INFO L84 FinitePrefix]: Finished finitePrefix Result has 140208 conditions, 17898 events. 7582/17898 cut-off events. For 468082/471889 co-relation queries the response was YES. Maximal size of possible extension queue 1234. Compared 199937 event pairs, 1368 based on Foata normal form. 1235/18485 useless extension candidates. Maximal degree in co-relation 139610. Up to 4326 conditions per place. [2021-03-11 06:31:16,221 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 179 selfloop transitions, 956 changer transitions 1/1163 dead transitions. [2021-03-11 06:31:16,221 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 1163 transitions, 39104 flow [2021-03-11 06:31:16,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 06:31:16,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-11 06:31:16,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 323 transitions. [2021-03-11 06:31:16,222 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8777173913043478 [2021-03-11 06:31:16,222 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 323 transitions. [2021-03-11 06:31:16,222 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 323 transitions. [2021-03-11 06:31:16,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:31:16,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 323 transitions. [2021-03-11 06:31:16,223 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 40.375) internal successors, (323), 8 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:31:16,223 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 46.0) internal successors, (414), 9 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:31:16,223 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 46.0) internal successors, (414), 9 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:31:16,223 INFO L185 Difference]: Start difference. First operand has 188 places, 1086 transitions, 35425 flow. Second operand 8 states and 323 transitions. [2021-03-11 06:31:16,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 1163 transitions, 39104 flow [2021-03-11 06:31:18,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 1163 transitions, 36749 flow, removed 7 selfloop flow, removed 14 redundant places. [2021-03-11 06:31:18,156 INFO L241 Difference]: Finished difference. Result has 183 places, 1111 transitions, 35937 flow [2021-03-11 06:31:18,157 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=33107, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1083, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=928, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=35937, PETRI_PLACES=183, PETRI_TRANSITIONS=1111} [2021-03-11 06:31:18,157 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 128 predicate places. [2021-03-11 06:31:18,157 INFO L480 AbstractCegarLoop]: Abstraction has has 183 places, 1111 transitions, 35937 flow [2021-03-11 06:31:18,157 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 31.285714285714285) internal successors, (219), 7 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:31:18,157 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:31:18,157 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:31:18,157 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-03-11 06:31:18,157 INFO L428 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 06:31:18,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:31:18,158 INFO L82 PathProgramCache]: Analyzing trace with hash -10703410, now seen corresponding path program 28 times [2021-03-11 06:31:18,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:31:18,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082946407] [2021-03-11 06:31:18,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:31:18,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:31:18,170 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:31:18,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:31:18,172 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:31:18,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:31:18,175 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:31:18,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:31:18,178 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:31:18,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:31:18,178 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:31:18,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:31:18,179 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:31:18,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:31:18,183 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:31:18,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:31:18,187 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:31:18,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:31:18,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:31:18,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:31:18,197 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:31:18,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:31:18,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 06:31:18,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082946407] [2021-03-11 06:31:18,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:31:18,198 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 06:31:18,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358852128] [2021-03-11 06:31:18,198 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 06:31:18,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:31:18,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 06:31:18,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-03-11 06:31:18,199 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-03-11 06:31:18,199 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 1111 transitions, 35937 flow. Second operand has 9 states, 9 states have (on average 30.77777777777778) internal successors, (277), 9 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:31:18,199 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:31:18,199 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-03-11 06:31:18,199 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:31:22,401 INFO L129 PetriNetUnfolder]: 7385/17703 cut-off events. [2021-03-11 06:31:22,401 INFO L130 PetriNetUnfolder]: For 468213/473005 co-relation queries the response was YES. [2021-03-11 06:31:22,518 INFO L84 FinitePrefix]: Finished finitePrefix Result has 138216 conditions, 17703 events. 7385/17703 cut-off events. For 468213/473005 co-relation queries the response was YES. Maximal size of possible extension queue 1300. Compared 200227 event pairs, 1302 based on Foata normal form. 1477/18559 useless extension candidates. Maximal degree in co-relation 137650. Up to 4290 conditions per place. [2021-03-11 06:31:22,586 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 206 selfloop transitions, 944 changer transitions 71/1248 dead transitions. [2021-03-11 06:31:22,586 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 1248 transitions, 40957 flow [2021-03-11 06:31:22,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-03-11 06:31:22,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-03-11 06:31:22,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 486 transitions. [2021-03-11 06:31:22,587 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8804347826086957 [2021-03-11 06:31:22,587 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 486 transitions. [2021-03-11 06:31:22,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 486 transitions. [2021-03-11 06:31:22,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:31:22,588 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 486 transitions. [2021-03-11 06:31:22,588 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 40.5) internal successors, (486), 12 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:31:22,589 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 46.0) internal successors, (598), 13 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:31:22,589 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 46.0) internal successors, (598), 13 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:31:22,589 INFO L185 Difference]: Start difference. First operand has 183 places, 1111 transitions, 35937 flow. Second operand 12 states and 486 transitions. [2021-03-11 06:31:22,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 1248 transitions, 40957 flow [2021-03-11 06:31:24,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 1248 transitions, 40532 flow, removed 15 selfloop flow, removed 3 redundant places. [2021-03-11 06:31:24,795 INFO L241 Difference]: Finished difference. Result has 194 places, 1099 transitions, 36516 flow [2021-03-11 06:31:24,796 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=35533, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=892, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=36516, PETRI_PLACES=194, PETRI_TRANSITIONS=1099} [2021-03-11 06:31:24,796 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 139 predicate places. [2021-03-11 06:31:24,796 INFO L480 AbstractCegarLoop]: Abstraction has has 194 places, 1099 transitions, 36516 flow [2021-03-11 06:31:24,796 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 30.77777777777778) internal successors, (277), 9 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:31:24,796 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:31:24,796 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:31:24,796 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-03-11 06:31:24,796 INFO L428 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 06:31:24,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:31:24,796 INFO L82 PathProgramCache]: Analyzing trace with hash 656730210, now seen corresponding path program 29 times [2021-03-11 06:31:24,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:31:24,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620645429] [2021-03-11 06:31:24,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:31:24,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:31:24,806 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:31:24,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:31:24,808 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:31:24,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:31:24,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:31:24,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:31:24,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:31:24,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:31:24,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:31:24,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 06:31:24,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:31:24,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:31:24,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:31:24,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:31:24,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:31:24,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:31:24,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:31:24,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:31:24,827 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:31:24,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:31:24,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 06:31:24,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620645429] [2021-03-11 06:31:24,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:31:24,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 06:31:24,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367421119] [2021-03-11 06:31:24,828 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 06:31:24,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:31:24,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 06:31:24,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-03-11 06:31:24,829 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-03-11 06:31:24,829 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 1099 transitions, 36516 flow. Second operand has 8 states, 8 states have (on average 31.0) internal successors, (248), 8 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:31:24,830 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:31:24,830 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-03-11 06:31:24,830 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:31:29,075 INFO L129 PetriNetUnfolder]: 7537/18208 cut-off events. [2021-03-11 06:31:29,075 INFO L130 PetriNetUnfolder]: For 538758/543392 co-relation queries the response was YES. [2021-03-11 06:31:29,169 INFO L84 FinitePrefix]: Finished finitePrefix Result has 143715 conditions, 18208 events. 7537/18208 cut-off events. For 538758/543392 co-relation queries the response was YES. Maximal size of possible extension queue 1352. Compared 208575 event pairs, 973 based on Foata normal form. 1336/18890 useless extension candidates. Maximal degree in co-relation 143112. Up to 3631 conditions per place. [2021-03-11 06:31:29,235 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 161 selfloop transitions, 986 changer transitions 2/1176 dead transitions. [2021-03-11 06:31:29,235 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 1176 transitions, 39803 flow [2021-03-11 06:31:29,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 06:31:29,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 06:31:29,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 364 transitions. [2021-03-11 06:31:29,236 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8792270531400966 [2021-03-11 06:31:29,236 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 364 transitions. [2021-03-11 06:31:29,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 364 transitions. [2021-03-11 06:31:29,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:31:29,236 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 364 transitions. [2021-03-11 06:31:29,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 40.44444444444444) internal successors, (364), 9 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:31:29,237 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 46.0) internal successors, (460), 10 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:31:29,237 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 46.0) internal successors, (460), 10 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:31:29,237 INFO L185 Difference]: Start difference. First operand has 194 places, 1099 transitions, 36516 flow. Second operand 9 states and 364 transitions. [2021-03-11 06:31:29,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 1176 transitions, 39803 flow [2021-03-11 06:31:31,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 1176 transitions, 38191 flow, removed 7 selfloop flow, removed 8 redundant places. [2021-03-11 06:31:31,544 INFO L241 Difference]: Finished difference. Result has 196 places, 1129 transitions, 37710 flow [2021-03-11 06:31:31,545 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=34920, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1099, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=956, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=37710, PETRI_PLACES=196, PETRI_TRANSITIONS=1129} [2021-03-11 06:31:31,545 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 141 predicate places. [2021-03-11 06:31:31,545 INFO L480 AbstractCegarLoop]: Abstraction has has 196 places, 1129 transitions, 37710 flow [2021-03-11 06:31:31,545 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 31.0) internal successors, (248), 8 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:31:31,545 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:31:31,545 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:31:31,545 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-03-11 06:31:31,546 INFO L428 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 06:31:31,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:31:31,546 INFO L82 PathProgramCache]: Analyzing trace with hash 366805810, now seen corresponding path program 30 times [2021-03-11 06:31:31,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:31:31,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637033506] [2021-03-11 06:31:31,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:31:31,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:31:31,563 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:31:31,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:31:31,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:31:31,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:31:31,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:31:31,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:31:31,572 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:31:31,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:31:31,576 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:31:31,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:31:31,576 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:31:31,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:31:31,577 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:31:31,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 06:31:31,580 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:31:31,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:31:31,581 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:31:31,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:31:31,585 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:31:31,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:31:31,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 06:31:31,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637033506] [2021-03-11 06:31:31,586 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:31:31,586 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 06:31:31,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586310893] [2021-03-11 06:31:31,586 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 06:31:31,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:31:31,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 06:31:31,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-03-11 06:31:31,587 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-03-11 06:31:31,587 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 1129 transitions, 37710 flow. Second operand has 8 states, 8 states have (on average 31.0) internal successors, (248), 8 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:31:31,587 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:31:31,587 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-03-11 06:31:31,587 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:31:35,892 INFO L129 PetriNetUnfolder]: 7521/17965 cut-off events. [2021-03-11 06:31:35,892 INFO L130 PetriNetUnfolder]: For 534874/538311 co-relation queries the response was YES. [2021-03-11 06:31:36,000 INFO L84 FinitePrefix]: Finished finitePrefix Result has 148362 conditions, 17965 events. 7521/17965 cut-off events. For 534874/538311 co-relation queries the response was YES. Maximal size of possible extension queue 1329. Compared 202693 event pairs, 727 based on Foata normal form. 1169/18469 useless extension candidates. Maximal degree in co-relation 147712. Up to 4328 conditions per place. [2021-03-11 06:31:36,069 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 103 selfloop transitions, 1100 changer transitions 11/1241 dead transitions. [2021-03-11 06:31:36,069 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 1241 transitions, 41415 flow [2021-03-11 06:31:36,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 06:31:36,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 06:31:36,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 365 transitions. [2021-03-11 06:31:36,070 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8816425120772947 [2021-03-11 06:31:36,070 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 365 transitions. [2021-03-11 06:31:36,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 365 transitions. [2021-03-11 06:31:36,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:31:36,071 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 365 transitions. [2021-03-11 06:31:36,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 40.55555555555556) internal successors, (365), 9 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:31:36,072 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 46.0) internal successors, (460), 10 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:31:36,072 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 46.0) internal successors, (460), 10 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:31:36,072 INFO L185 Difference]: Start difference. First operand has 196 places, 1129 transitions, 37710 flow. Second operand 9 states and 365 transitions. [2021-03-11 06:31:36,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 1241 transitions, 41415 flow [2021-03-11 06:31:38,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 1241 transitions, 38682 flow, removed 10 selfloop flow, removed 7 redundant places. [2021-03-11 06:31:38,707 INFO L241 Difference]: Finished difference. Result has 199 places, 1196 transitions, 38920 flow [2021-03-11 06:31:38,708 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=35079, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1046, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=38920, PETRI_PLACES=199, PETRI_TRANSITIONS=1196} [2021-03-11 06:31:38,708 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 144 predicate places. [2021-03-11 06:31:38,708 INFO L480 AbstractCegarLoop]: Abstraction has has 199 places, 1196 transitions, 38920 flow [2021-03-11 06:31:38,708 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 31.0) internal successors, (248), 8 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:31:38,708 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:31:38,708 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:31:38,708 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-03-11 06:31:38,708 INFO L428 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 06:31:38,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:31:38,709 INFO L82 PathProgramCache]: Analyzing trace with hash -1733488690, now seen corresponding path program 31 times [2021-03-11 06:31:38,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:31:38,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330387836] [2021-03-11 06:31:38,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:31:38,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:31:38,720 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:31:38,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:31:38,722 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:31:38,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:31:38,725 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:31:38,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:31:38,729 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:31:38,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:31:38,729 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:31:38,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 06:31:38,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:31:38,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:31:38,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:31:38,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:31:38,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:31:38,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:31:38,739 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:31:38,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:31:38,746 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:31:38,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:31:38,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 06:31:38,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330387836] [2021-03-11 06:31:38,746 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:31:38,746 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 06:31:38,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152918968] [2021-03-11 06:31:38,747 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 06:31:38,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:31:38,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 06:31:38,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-03-11 06:31:38,747 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-03-11 06:31:38,748 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 1196 transitions, 38920 flow. Second operand has 8 states, 8 states have (on average 31.0) internal successors, (248), 8 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:31:38,748 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:31:38,748 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-03-11 06:31:38,748 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:31:43,490 INFO L129 PetriNetUnfolder]: 7669/18726 cut-off events. [2021-03-11 06:31:43,491 INFO L130 PetriNetUnfolder]: For 571125/575885 co-relation queries the response was YES. [2021-03-11 06:31:43,600 INFO L84 FinitePrefix]: Finished finitePrefix Result has 153633 conditions, 18726 events. 7669/18726 cut-off events. For 571125/575885 co-relation queries the response was YES. Maximal size of possible extension queue 1382. Compared 216081 event pairs, 937 based on Foata normal form. 1312/19380 useless extension candidates. Maximal degree in co-relation 152892. Up to 3899 conditions per place. [2021-03-11 06:31:43,672 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 200 selfloop transitions, 1057 changer transitions 0/1284 dead transitions. [2021-03-11 06:31:43,672 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 1284 transitions, 42674 flow [2021-03-11 06:31:43,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 06:31:43,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 06:31:43,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 364 transitions. [2021-03-11 06:31:43,673 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8792270531400966 [2021-03-11 06:31:43,673 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 364 transitions. [2021-03-11 06:31:43,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 364 transitions. [2021-03-11 06:31:43,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:31:43,673 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 364 transitions. [2021-03-11 06:31:43,674 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 40.44444444444444) internal successors, (364), 9 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:31:43,674 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 46.0) internal successors, (460), 10 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:31:43,674 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 46.0) internal successors, (460), 10 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:31:43,674 INFO L185 Difference]: Start difference. First operand has 199 places, 1196 transitions, 38920 flow. Second operand 9 states and 364 transitions. [2021-03-11 06:31:43,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 1284 transitions, 42674 flow [2021-03-11 06:31:46,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 1284 transitions, 40735 flow, removed 59 selfloop flow, removed 6 redundant places. [2021-03-11 06:31:46,331 INFO L241 Difference]: Finished difference. Result has 203 places, 1228 transitions, 40017 flow [2021-03-11 06:31:46,332 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=37060, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1025, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=40017, PETRI_PLACES=203, PETRI_TRANSITIONS=1228} [2021-03-11 06:31:46,332 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 148 predicate places. [2021-03-11 06:31:46,332 INFO L480 AbstractCegarLoop]: Abstraction has has 203 places, 1228 transitions, 40017 flow [2021-03-11 06:31:46,332 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 31.0) internal successors, (248), 8 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:31:46,332 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:31:46,332 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:31:46,333 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-03-11 06:31:46,333 INFO L428 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 06:31:46,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:31:46,333 INFO L82 PathProgramCache]: Analyzing trace with hash -2028642846, now seen corresponding path program 32 times [2021-03-11 06:31:46,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:31:46,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972733215] [2021-03-11 06:31:46,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:31:46,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:31:46,347 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:31:46,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:31:46,349 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:31:46,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:31:46,352 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:31:46,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:31:46,356 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:31:46,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:31:46,360 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:31:46,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:31:46,361 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:31:46,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:31:46,361 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:31:46,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 06:31:46,364 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:31:46,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:31:46,365 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:31:46,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:31:46,370 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:31:46,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:31:46,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 06:31:46,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972733215] [2021-03-11 06:31:46,370 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:31:46,370 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 06:31:46,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602436319] [2021-03-11 06:31:46,371 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 06:31:46,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:31:46,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 06:31:46,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-03-11 06:31:46,371 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-03-11 06:31:46,372 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 1228 transitions, 40017 flow. Second operand has 8 states, 8 states have (on average 31.0) internal successors, (248), 8 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:31:46,372 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:31:46,372 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-03-11 06:31:46,372 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:31:51,266 INFO L129 PetriNetUnfolder]: 7665/18375 cut-off events. [2021-03-11 06:31:51,267 INFO L130 PetriNetUnfolder]: For 573831/577858 co-relation queries the response was YES. [2021-03-11 06:31:51,388 INFO L84 FinitePrefix]: Finished finitePrefix Result has 154818 conditions, 18375 events. 7665/18375 cut-off events. For 573831/577858 co-relation queries the response was YES. Maximal size of possible extension queue 1361. Compared 209089 event pairs, 712 based on Foata normal form. 1226/18931 useless extension candidates. Maximal degree in co-relation 154162. Up to 4471 conditions per place. [2021-03-11 06:31:51,463 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 108 selfloop transitions, 1140 changer transitions 11/1286 dead transitions. [2021-03-11 06:31:51,464 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 1286 transitions, 43380 flow [2021-03-11 06:31:51,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 06:31:51,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 06:31:51,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 365 transitions. [2021-03-11 06:31:51,465 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8816425120772947 [2021-03-11 06:31:51,465 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 365 transitions. [2021-03-11 06:31:51,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 365 transitions. [2021-03-11 06:31:51,465 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:31:51,465 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 365 transitions. [2021-03-11 06:31:51,465 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 40.55555555555556) internal successors, (365), 9 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:31:51,466 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 46.0) internal successors, (460), 10 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:31:51,466 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 46.0) internal successors, (460), 10 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:31:51,466 INFO L185 Difference]: Start difference. First operand has 203 places, 1228 transitions, 40017 flow. Second operand 9 states and 365 transitions. [2021-03-11 06:31:51,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 1286 transitions, 43380 flow [2021-03-11 06:31:54,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 1286 transitions, 42638 flow, removed 12 selfloop flow, removed 5 redundant places. [2021-03-11 06:31:54,196 INFO L241 Difference]: Finished difference. Result has 207 places, 1233 transitions, 41445 flow [2021-03-11 06:31:54,196 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=39299, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=41445, PETRI_PLACES=207, PETRI_TRANSITIONS=1233} [2021-03-11 06:31:54,196 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 152 predicate places. [2021-03-11 06:31:54,196 INFO L480 AbstractCegarLoop]: Abstraction has has 207 places, 1233 transitions, 41445 flow [2021-03-11 06:31:54,196 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 31.0) internal successors, (248), 8 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:31:54,196 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:31:54,196 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:31:54,197 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-03-11 06:31:54,197 INFO L428 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 06:31:54,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:31:54,197 INFO L82 PathProgramCache]: Analyzing trace with hash -68166550, now seen corresponding path program 33 times [2021-03-11 06:31:54,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:31:54,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106789887] [2021-03-11 06:31:54,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:31:54,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:31:54,210 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:31:54,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:31:54,212 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:31:54,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:31:54,215 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:31:54,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:31:54,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:31:54,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:31:54,220 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:31:54,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 06:31:54,223 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:31:54,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:31:54,223 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:31:54,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:31:54,224 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:31:54,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:31:54,228 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:31:54,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:31:54,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:31:54,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:31:54,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 06:31:54,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106789887] [2021-03-11 06:31:54,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:31:54,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 06:31:54,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707243350] [2021-03-11 06:31:54,237 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 06:31:54,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:31:54,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 06:31:54,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-03-11 06:31:54,238 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-03-11 06:31:54,238 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 1233 transitions, 41445 flow. Second operand has 8 states, 8 states have (on average 31.0) internal successors, (248), 8 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:31:54,238 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:31:54,238 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-03-11 06:31:54,238 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:31:59,007 INFO L129 PetriNetUnfolder]: 7672/18841 cut-off events. [2021-03-11 06:31:59,007 INFO L130 PetriNetUnfolder]: For 629133/634067 co-relation queries the response was YES. [2021-03-11 06:31:59,114 INFO L84 FinitePrefix]: Finished finitePrefix Result has 158788 conditions, 18841 events. 7672/18841 cut-off events. For 629133/634067 co-relation queries the response was YES. Maximal size of possible extension queue 1410. Compared 218424 event pairs, 968 based on Foata normal form. 1244/19440 useless extension candidates. Maximal degree in co-relation 158011. Up to 3965 conditions per place. [2021-03-11 06:31:59,185 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 222 selfloop transitions, 1093 changer transitions 8/1350 dead transitions. [2021-03-11 06:31:59,185 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 1350 transitions, 45946 flow [2021-03-11 06:31:59,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 06:31:59,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 06:31:59,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 364 transitions. [2021-03-11 06:31:59,186 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8792270531400966 [2021-03-11 06:31:59,186 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 364 transitions. [2021-03-11 06:31:59,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 364 transitions. [2021-03-11 06:31:59,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:31:59,186 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 364 transitions. [2021-03-11 06:31:59,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 40.44444444444444) internal successors, (364), 9 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:31:59,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 46.0) internal successors, (460), 10 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:31:59,187 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 46.0) internal successors, (460), 10 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:31:59,187 INFO L185 Difference]: Start difference. First operand has 207 places, 1233 transitions, 41445 flow. Second operand 9 states and 364 transitions. [2021-03-11 06:31:59,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 1350 transitions, 45946 flow [2021-03-11 06:32:01,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 1350 transitions, 44779 flow, removed 12 selfloop flow, removed 6 redundant places. [2021-03-11 06:32:01,761 INFO L241 Difference]: Finished difference. Result has 211 places, 1262 transitions, 43325 flow [2021-03-11 06:32:01,761 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=40322, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1060, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=43325, PETRI_PLACES=211, PETRI_TRANSITIONS=1262} [2021-03-11 06:32:01,762 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 156 predicate places. [2021-03-11 06:32:01,762 INFO L480 AbstractCegarLoop]: Abstraction has has 211 places, 1262 transitions, 43325 flow [2021-03-11 06:32:01,762 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 31.0) internal successors, (248), 8 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:32:01,762 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:32:01,762 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:32:01,762 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-03-11 06:32:01,762 INFO L428 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 06:32:01,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:32:01,762 INFO L82 PathProgramCache]: Analyzing trace with hash 573866584, now seen corresponding path program 34 times [2021-03-11 06:32:01,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:32:01,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132495150] [2021-03-11 06:32:01,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:32:01,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:32:01,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:32:01,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:32:01,777 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:32:01,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:32:01,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:32:01,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:32:01,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:32:01,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:32:01,788 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:32:01,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:32:01,792 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:32:01,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:32:01,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:32:01,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:32:01,797 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:32:01,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:32:01,802 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:32:01,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:32:01,808 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:32:01,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:32:01,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 06:32:01,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132495150] [2021-03-11 06:32:01,808 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:32:01,808 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-11 06:32:01,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275888552] [2021-03-11 06:32:01,809 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-11 06:32:01,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:32:01,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-11 06:32:01,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-03-11 06:32:01,809 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-03-11 06:32:01,810 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 1262 transitions, 43325 flow. Second operand has 10 states, 10 states have (on average 30.6) internal successors, (306), 10 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:32:01,810 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:32:01,810 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-03-11 06:32:01,810 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:32:06,853 INFO L129 PetriNetUnfolder]: 7649/18801 cut-off events. [2021-03-11 06:32:06,854 INFO L130 PetriNetUnfolder]: For 666943/671601 co-relation queries the response was YES. [2021-03-11 06:32:07,212 INFO L84 FinitePrefix]: Finished finitePrefix Result has 163405 conditions, 18801 events. 7649/18801 cut-off events. For 666943/671601 co-relation queries the response was YES. Maximal size of possible extension queue 1450. Compared 217902 event pairs, 1492 based on Foata normal form. 1127/19306 useless extension candidates. Maximal degree in co-relation 162671. Up to 4882 conditions per place. [2021-03-11 06:32:07,297 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 296 selfloop transitions, 1017 changer transitions 25/1365 dead transitions. [2021-03-11 06:32:07,297 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 1365 transitions, 47877 flow [2021-03-11 06:32:07,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-11 06:32:07,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-11 06:32:07,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 530 transitions. [2021-03-11 06:32:07,298 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8862876254180602 [2021-03-11 06:32:07,298 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 530 transitions. [2021-03-11 06:32:07,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 530 transitions. [2021-03-11 06:32:07,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:32:07,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 530 transitions. [2021-03-11 06:32:07,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 40.76923076923077) internal successors, (530), 13 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:32:07,299 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 46.0) internal successors, (644), 14 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:32:07,299 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 46.0) internal successors, (644), 14 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:32:07,300 INFO L185 Difference]: Start difference. First operand has 211 places, 1262 transitions, 43325 flow. Second operand 13 states and 530 transitions. [2021-03-11 06:32:07,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 1365 transitions, 47877 flow [2021-03-11 06:32:10,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 1365 transitions, 47122 flow, removed 10 selfloop flow, removed 5 redundant places. [2021-03-11 06:32:10,162 INFO L241 Difference]: Finished difference. Result has 219 places, 1284 transitions, 44752 flow [2021-03-11 06:32:10,162 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=42605, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=971, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=44752, PETRI_PLACES=219, PETRI_TRANSITIONS=1284} [2021-03-11 06:32:10,162 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 164 predicate places. [2021-03-11 06:32:10,162 INFO L480 AbstractCegarLoop]: Abstraction has has 219 places, 1284 transitions, 44752 flow [2021-03-11 06:32:10,163 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 30.6) internal successors, (306), 10 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:32:10,163 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:32:10,163 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:32:10,163 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-03-11 06:32:10,163 INFO L428 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 06:32:10,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:32:10,163 INFO L82 PathProgramCache]: Analyzing trace with hash 671837248, now seen corresponding path program 35 times [2021-03-11 06:32:10,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:32:10,163 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660948131] [2021-03-11 06:32:10,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:32:10,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:32:10,177 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:32:10,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:32:10,179 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:32:10,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:32:10,182 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:32:10,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:32:10,185 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:32:10,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:32:10,189 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:32:10,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:32:10,194 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:32:10,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:32:10,199 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:32:10,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:32:10,204 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:32:10,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:32:10,210 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:32:10,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:32:10,216 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:32:10,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:32:10,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 06:32:10,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660948131] [2021-03-11 06:32:10,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:32:10,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-11 06:32:10,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268015337] [2021-03-11 06:32:10,217 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-11 06:32:10,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:32:10,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-11 06:32:10,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-03-11 06:32:10,217 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-03-11 06:32:10,218 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 1284 transitions, 44752 flow. Second operand has 11 states, 11 states have (on average 30.454545454545453) internal successors, (335), 11 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:32:10,218 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:32:10,218 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-03-11 06:32:10,218 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:32:15,123 INFO L129 PetriNetUnfolder]: 7673/18918 cut-off events. [2021-03-11 06:32:15,124 INFO L130 PetriNetUnfolder]: For 697889/701378 co-relation queries the response was YES. [2021-03-11 06:32:15,458 INFO L84 FinitePrefix]: Finished finitePrefix Result has 165277 conditions, 18918 events. 7673/18918 cut-off events. For 697889/701378 co-relation queries the response was YES. Maximal size of possible extension queue 1462. Compared 220271 event pairs, 1491 based on Foata normal form. 839/19120 useless extension candidates. Maximal degree in co-relation 164556. Up to 4884 conditions per place. [2021-03-11 06:32:15,530 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 288 selfloop transitions, 966 changer transitions 102/1383 dead transitions. [2021-03-11 06:32:15,530 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 1383 transitions, 49313 flow [2021-03-11 06:32:15,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-03-11 06:32:15,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-03-11 06:32:15,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 671 transitions. [2021-03-11 06:32:15,531 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8580562659846548 [2021-03-11 06:32:15,531 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 671 transitions. [2021-03-11 06:32:15,531 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 671 transitions. [2021-03-11 06:32:15,531 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:32:15,532 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 671 transitions. [2021-03-11 06:32:15,532 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 39.470588235294116) internal successors, (671), 17 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:32:15,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 46.0) internal successors, (828), 18 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:32:15,533 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 46.0) internal successors, (828), 18 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:32:15,533 INFO L185 Difference]: Start difference. First operand has 219 places, 1284 transitions, 44752 flow. Second operand 17 states and 671 transitions. [2021-03-11 06:32:15,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 1383 transitions, 49313 flow [2021-03-11 06:32:18,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 1383 transitions, 49002 flow, removed 15 selfloop flow, removed 4 redundant places. [2021-03-11 06:32:18,334 INFO L241 Difference]: Finished difference. Result has 232 places, 1233 transitions, 44408 flow [2021-03-11 06:32:18,335 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=44494, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=966, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=44408, PETRI_PLACES=232, PETRI_TRANSITIONS=1233} [2021-03-11 06:32:18,335 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 177 predicate places. [2021-03-11 06:32:18,335 INFO L480 AbstractCegarLoop]: Abstraction has has 232 places, 1233 transitions, 44408 flow [2021-03-11 06:32:18,335 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 30.454545454545453) internal successors, (335), 11 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:32:18,335 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:32:18,335 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:32:18,335 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-03-11 06:32:18,335 INFO L428 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 06:32:18,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:32:18,335 INFO L82 PathProgramCache]: Analyzing trace with hash -953578986, now seen corresponding path program 36 times [2021-03-11 06:32:18,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:32:18,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654003000] [2021-03-11 06:32:18,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:32:18,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:32:18,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:32:18,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:32:18,348 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:32:18,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:32:18,351 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:32:18,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:32:18,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:32:18,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:32:18,359 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:32:18,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:32:18,363 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:32:18,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:32:18,368 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:32:18,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:32:18,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:32:18,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:32:18,379 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:32:18,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:32:18,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:32:18,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:32:18,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 06:32:18,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654003000] [2021-03-11 06:32:18,386 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:32:18,386 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-11 06:32:18,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993053554] [2021-03-11 06:32:18,386 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-11 06:32:18,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:32:18,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-11 06:32:18,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-03-11 06:32:18,387 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-03-11 06:32:18,388 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 1233 transitions, 44408 flow. Second operand has 11 states, 11 states have (on average 30.454545454545453) internal successors, (335), 11 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:32:18,388 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:32:18,388 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-03-11 06:32:18,388 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:32:23,244 INFO L129 PetriNetUnfolder]: 7550/18625 cut-off events. [2021-03-11 06:32:23,244 INFO L130 PetriNetUnfolder]: For 722266/725772 co-relation queries the response was YES. [2021-03-11 06:32:23,376 INFO L84 FinitePrefix]: Finished finitePrefix Result has 166288 conditions, 18625 events. 7550/18625 cut-off events. For 722266/725772 co-relation queries the response was YES. Maximal size of possible extension queue 1443. Compared 216563 event pairs, 1461 based on Foata normal form. 837/18824 useless extension candidates. Maximal degree in co-relation 165530. Up to 4884 conditions per place. [2021-03-11 06:32:23,684 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 305 selfloop transitions, 968 changer transitions 17/1317 dead transitions. [2021-03-11 06:32:23,685 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 1317 transitions, 48366 flow [2021-03-11 06:32:23,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-03-11 06:32:23,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-03-11 06:32:23,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 671 transitions. [2021-03-11 06:32:23,688 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8580562659846548 [2021-03-11 06:32:23,688 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 671 transitions. [2021-03-11 06:32:23,688 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 671 transitions. [2021-03-11 06:32:23,689 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:32:23,689 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 671 transitions. [2021-03-11 06:32:23,689 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 39.470588235294116) internal successors, (671), 17 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:32:23,690 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 46.0) internal successors, (828), 18 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:32:23,690 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 46.0) internal successors, (828), 18 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:32:23,690 INFO L185 Difference]: Start difference. First operand has 232 places, 1233 transitions, 44408 flow. Second operand 17 states and 671 transitions. [2021-03-11 06:32:23,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 1317 transitions, 48366 flow [2021-03-11 06:32:26,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 1317 transitions, 45845 flow, removed 94 selfloop flow, removed 14 redundant places. [2021-03-11 06:32:26,076 INFO L241 Difference]: Finished difference. Result has 230 places, 1234 transitions, 43634 flow [2021-03-11 06:32:26,077 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=41947, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=951, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=43634, PETRI_PLACES=230, PETRI_TRANSITIONS=1234} [2021-03-11 06:32:26,077 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 175 predicate places. [2021-03-11 06:32:26,077 INFO L480 AbstractCegarLoop]: Abstraction has has 230 places, 1234 transitions, 43634 flow [2021-03-11 06:32:26,077 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 30.454545454545453) internal successors, (335), 11 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:32:26,077 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:32:26,077 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:32:26,077 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-03-11 06:32:26,078 INFO L428 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 06:32:26,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:32:26,078 INFO L82 PathProgramCache]: Analyzing trace with hash -2041189936, now seen corresponding path program 37 times [2021-03-11 06:32:26,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:32:26,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186065767] [2021-03-11 06:32:26,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:32:26,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:32:26,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:32:26,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:32:26,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:32:26,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:32:26,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:32:26,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:32:26,230 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:32:26,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:32:26,235 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:32:26,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:32:26,235 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:32:26,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:32:26,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:32:26,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 06:32:26,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:32:26,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:32:26,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:32:26,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:32:26,245 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:32:26,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:32:26,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 06:32:26,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186065767] [2021-03-11 06:32:26,246 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:32:26,246 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 06:32:26,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125474221] [2021-03-11 06:32:26,246 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 06:32:26,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:32:26,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 06:32:26,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-03-11 06:32:26,247 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-03-11 06:32:26,247 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 1234 transitions, 43634 flow. Second operand has 8 states, 8 states have (on average 31.0) internal successors, (248), 8 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:32:26,247 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:32:26,247 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-03-11 06:32:26,247 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:32:30,670 INFO L129 PetriNetUnfolder]: 7531/18268 cut-off events. [2021-03-11 06:32:30,671 INFO L130 PetriNetUnfolder]: For 697040/702022 co-relation queries the response was YES. [2021-03-11 06:32:30,783 INFO L84 FinitePrefix]: Finished finitePrefix Result has 163584 conditions, 18268 events. 7531/18268 cut-off events. For 697040/702022 co-relation queries the response was YES. Maximal size of possible extension queue 1400. Compared 209731 event pairs, 715 based on Foata normal form. 1241/18826 useless extension candidates. Maximal degree in co-relation 162835. Up to 4444 conditions per place. [2021-03-11 06:32:30,857 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 112 selfloop transitions, 1135 changer transitions 14/1288 dead transitions. [2021-03-11 06:32:30,857 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 1288 transitions, 46935 flow [2021-03-11 06:32:30,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 06:32:30,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 06:32:30,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 365 transitions. [2021-03-11 06:32:30,858 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8816425120772947 [2021-03-11 06:32:30,858 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 365 transitions. [2021-03-11 06:32:30,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 365 transitions. [2021-03-11 06:32:30,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:32:30,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 365 transitions. [2021-03-11 06:32:30,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 40.55555555555556) internal successors, (365), 9 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:32:30,859 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 46.0) internal successors, (460), 10 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:32:30,859 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 46.0) internal successors, (460), 10 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:32:30,859 INFO L185 Difference]: Start difference. First operand has 230 places, 1234 transitions, 43634 flow. Second operand 9 states and 365 transitions. [2021-03-11 06:32:30,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 1288 transitions, 46935 flow [2021-03-11 06:32:33,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 1288 transitions, 45166 flow, removed 0 selfloop flow, removed 12 redundant places. [2021-03-11 06:32:33,611 INFO L241 Difference]: Finished difference. Result has 227 places, 1232 transitions, 43785 flow [2021-03-11 06:32:33,611 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=41879, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=43785, PETRI_PLACES=227, PETRI_TRANSITIONS=1232} [2021-03-11 06:32:33,612 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 172 predicate places. [2021-03-11 06:32:33,612 INFO L480 AbstractCegarLoop]: Abstraction has has 227 places, 1232 transitions, 43785 flow [2021-03-11 06:32:33,612 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 31.0) internal successors, (248), 8 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:32:33,612 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:32:33,612 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:32:33,612 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-03-11 06:32:33,612 INFO L428 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 06:32:33,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:32:33,612 INFO L82 PathProgramCache]: Analyzing trace with hash 1785679230, now seen corresponding path program 38 times [2021-03-11 06:32:33,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:32:33,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245485266] [2021-03-11 06:32:33,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:32:33,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:32:33,624 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:32:33,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:32:33,626 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:32:33,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:32:33,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:32:33,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:32:33,632 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:32:33,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:32:33,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:32:33,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:32:33,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:32:33,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:32:33,638 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:32:33,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:32:33,643 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:32:33,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:32:33,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:32:33,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:32:33,653 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:32:33,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:32:33,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 06:32:33,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245485266] [2021-03-11 06:32:33,653 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:32:33,653 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 06:32:33,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438047739] [2021-03-11 06:32:33,654 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 06:32:33,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:32:33,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 06:32:33,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-03-11 06:32:33,654 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-03-11 06:32:33,655 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 1232 transitions, 43785 flow. Second operand has 9 states, 9 states have (on average 30.77777777777778) internal successors, (277), 9 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:32:33,655 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:32:33,655 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-03-11 06:32:33,655 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:32:38,446 INFO L129 PetriNetUnfolder]: 6968/17882 cut-off events. [2021-03-11 06:32:38,446 INFO L130 PetriNetUnfolder]: For 709367/713864 co-relation queries the response was YES. [2021-03-11 06:32:38,548 INFO L84 FinitePrefix]: Finished finitePrefix Result has 163234 conditions, 17882 events. 6968/17882 cut-off events. For 709367/713864 co-relation queries the response was YES. Maximal size of possible extension queue 1479. Compared 212164 event pairs, 1458 based on Foata normal form. 1283/18598 useless extension candidates. Maximal degree in co-relation 162434. Up to 5322 conditions per place. [2021-03-11 06:32:38,616 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 375 selfloop transitions, 921 changer transitions 94/1417 dead transitions. [2021-03-11 06:32:38,616 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 1417 transitions, 52382 flow [2021-03-11 06:32:38,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-03-11 06:32:38,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-03-11 06:32:38,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 486 transitions. [2021-03-11 06:32:38,617 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8804347826086957 [2021-03-11 06:32:38,617 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 486 transitions. [2021-03-11 06:32:38,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 486 transitions. [2021-03-11 06:32:38,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:32:38,618 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 486 transitions. [2021-03-11 06:32:38,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 40.5) internal successors, (486), 12 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:32:38,618 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 46.0) internal successors, (598), 13 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:32:38,619 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 46.0) internal successors, (598), 13 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:32:38,619 INFO L185 Difference]: Start difference. First operand has 227 places, 1232 transitions, 43785 flow. Second operand 12 states and 486 transitions. [2021-03-11 06:32:38,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 1417 transitions, 52382 flow [2021-03-11 06:32:41,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 1417 transitions, 51207 flow, removed 0 selfloop flow, removed 5 redundant places. [2021-03-11 06:32:41,288 INFO L241 Difference]: Finished difference. Result has 237 places, 1267 transitions, 45445 flow [2021-03-11 06:32:41,289 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=42387, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=798, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=423, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=45445, PETRI_PLACES=237, PETRI_TRANSITIONS=1267} [2021-03-11 06:32:41,289 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 182 predicate places. [2021-03-11 06:32:41,289 INFO L480 AbstractCegarLoop]: Abstraction has has 237 places, 1267 transitions, 45445 flow [2021-03-11 06:32:41,289 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 30.77777777777778) internal successors, (277), 9 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:32:41,289 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:32:41,289 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:32:41,289 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-03-11 06:32:41,290 INFO L428 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 06:32:41,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:32:41,290 INFO L82 PathProgramCache]: Analyzing trace with hash -1591461846, now seen corresponding path program 39 times [2021-03-11 06:32:41,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:32:41,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897955524] [2021-03-11 06:32:41,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:32:41,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:32:41,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:32:41,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:32:41,301 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:32:41,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:32:41,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:32:41,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:32:41,307 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:32:41,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:32:41,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:32:41,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:32:41,316 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:32:41,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:32:41,316 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:32:41,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:32:41,317 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:32:41,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:32:41,321 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:32:41,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:32:41,326 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:32:41,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:32:41,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 06:32:41,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897955524] [2021-03-11 06:32:41,327 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:32:41,327 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 06:32:41,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343633032] [2021-03-11 06:32:41,327 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 06:32:41,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:32:41,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 06:32:41,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-03-11 06:32:41,328 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-03-11 06:32:41,328 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 1267 transitions, 45445 flow. Second operand has 9 states, 9 states have (on average 30.77777777777778) internal successors, (277), 9 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:32:41,328 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:32:41,328 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-03-11 06:32:41,328 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:32:46,374 INFO L129 PetriNetUnfolder]: 6823/17441 cut-off events. [2021-03-11 06:32:46,374 INFO L130 PetriNetUnfolder]: For 724936/728840 co-relation queries the response was YES. [2021-03-11 06:32:46,534 INFO L84 FinitePrefix]: Finished finitePrefix Result has 162076 conditions, 17441 events. 6823/17441 cut-off events. For 724936/728840 co-relation queries the response was YES. Maximal size of possible extension queue 1461. Compared 206074 event pairs, 1399 based on Foata normal form. 834/17711 useless extension candidates. Maximal degree in co-relation 161364. Up to 4855 conditions per place. [2021-03-11 06:32:46,645 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 294 selfloop transitions, 1012 changer transitions 11/1344 dead transitions. [2021-03-11 06:32:46,645 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 1344 transitions, 49784 flow [2021-03-11 06:32:46,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-03-11 06:32:46,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-03-11 06:32:46,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 486 transitions. [2021-03-11 06:32:46,651 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8804347826086957 [2021-03-11 06:32:46,652 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 486 transitions. [2021-03-11 06:32:46,652 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 486 transitions. [2021-03-11 06:32:46,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:32:46,652 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 486 transitions. [2021-03-11 06:32:46,652 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 40.5) internal successors, (486), 12 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:32:46,653 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 46.0) internal successors, (598), 13 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:32:46,653 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 46.0) internal successors, (598), 13 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:32:46,653 INFO L185 Difference]: Start difference. First operand has 237 places, 1267 transitions, 45445 flow. Second operand 12 states and 486 transitions. [2021-03-11 06:32:46,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 1344 transitions, 49784 flow [2021-03-11 06:32:49,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 1344 transitions, 49708 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-11 06:32:49,545 INFO L241 Difference]: Finished difference. Result has 247 places, 1287 transitions, 48099 flow [2021-03-11 06:32:49,546 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=45362, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=985, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=48099, PETRI_PLACES=247, PETRI_TRANSITIONS=1287} [2021-03-11 06:32:49,546 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 192 predicate places. [2021-03-11 06:32:49,546 INFO L480 AbstractCegarLoop]: Abstraction has has 247 places, 1287 transitions, 48099 flow [2021-03-11 06:32:49,546 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 30.77777777777778) internal successors, (277), 9 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:32:49,546 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:32:49,546 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:32:49,546 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-03-11 06:32:49,546 INFO L428 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 06:32:49,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:32:49,547 INFO L82 PathProgramCache]: Analyzing trace with hash 2120723032, now seen corresponding path program 40 times [2021-03-11 06:32:49,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:32:49,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661706312] [2021-03-11 06:32:49,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:32:49,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:32:49,557 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:32:49,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:32:49,560 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:32:49,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:32:49,562 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:32:49,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:32:49,566 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:32:49,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:32:49,570 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:32:49,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:32:49,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:32:49,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:32:49,579 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:32:49,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:32:49,584 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:32:49,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:32:49,590 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:32:49,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:32:49,596 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:32:49,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:32:49,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 06:32:49,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661706312] [2021-03-11 06:32:49,598 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:32:49,598 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-11 06:32:49,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796656417] [2021-03-11 06:32:49,598 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-11 06:32:49,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:32:49,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-11 06:32:49,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-03-11 06:32:49,599 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-03-11 06:32:49,599 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 1287 transitions, 48099 flow. Second operand has 11 states, 11 states have (on average 30.454545454545453) internal successors, (335), 11 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:32:49,599 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:32:49,599 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-03-11 06:32:49,599 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:32:54,624 INFO L129 PetriNetUnfolder]: 6868/17746 cut-off events. [2021-03-11 06:32:54,624 INFO L130 PetriNetUnfolder]: For 790411/794441 co-relation queries the response was YES. [2021-03-11 06:32:54,982 INFO L84 FinitePrefix]: Finished finitePrefix Result has 168937 conditions, 17746 events. 6868/17746 cut-off events. For 790411/794441 co-relation queries the response was YES. Maximal size of possible extension queue 1487. Compared 211692 event pairs, 1405 based on Foata normal form. 786/17947 useless extension candidates. Maximal degree in co-relation 168160. Up to 4857 conditions per place. [2021-03-11 06:32:55,055 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 313 selfloop transitions, 1006 changer transitions 42/1388 dead transitions. [2021-03-11 06:32:55,056 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 1388 transitions, 53174 flow [2021-03-11 06:32:55,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-03-11 06:32:55,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-03-11 06:32:55,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 672 transitions. [2021-03-11 06:32:55,057 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8593350383631714 [2021-03-11 06:32:55,057 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 672 transitions. [2021-03-11 06:32:55,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 672 transitions. [2021-03-11 06:32:55,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:32:55,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 672 transitions. [2021-03-11 06:32:55,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 39.529411764705884) internal successors, (672), 17 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:32:55,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 46.0) internal successors, (828), 18 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:32:55,058 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 46.0) internal successors, (828), 18 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:32:55,058 INFO L185 Difference]: Start difference. First operand has 247 places, 1287 transitions, 48099 flow. Second operand 17 states and 672 transitions. [2021-03-11 06:32:55,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 1388 transitions, 53174 flow [2021-03-11 06:32:57,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 1388 transitions, 52895 flow, removed 8 selfloop flow, removed 3 redundant places. [2021-03-11 06:32:57,907 INFO L241 Difference]: Finished difference. Result has 262 places, 1281 transitions, 49282 flow [2021-03-11 06:32:57,907 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=47836, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=972, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=49282, PETRI_PLACES=262, PETRI_TRANSITIONS=1281} [2021-03-11 06:32:57,907 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 207 predicate places. [2021-03-11 06:32:57,907 INFO L480 AbstractCegarLoop]: Abstraction has has 262 places, 1281 transitions, 49282 flow [2021-03-11 06:32:57,908 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 30.454545454545453) internal successors, (335), 11 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:32:57,908 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:32:57,908 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:32:57,908 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-03-11 06:32:57,908 INFO L428 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 06:32:57,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:32:57,908 INFO L82 PathProgramCache]: Analyzing trace with hash 1762408068, now seen corresponding path program 41 times [2021-03-11 06:32:57,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:32:57,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361684423] [2021-03-11 06:32:57,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:32:57,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:32:57,916 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:32:57,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:32:57,918 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:32:57,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:32:57,921 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:32:57,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:32:57,924 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:32:57,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:32:57,925 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:32:57,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 06:32:57,928 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:32:57,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:32:57,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:32:57,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:32:57,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:32:57,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:32:57,936 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:32:57,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:32:57,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 06:32:57,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361684423] [2021-03-11 06:32:57,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:32:57,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 06:32:57,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458779614] [2021-03-11 06:32:57,936 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 06:32:57,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:32:57,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 06:32:57,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-11 06:32:57,937 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-03-11 06:32:57,937 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 1281 transitions, 49282 flow. Second operand has 7 states, 7 states have (on average 31.285714285714285) internal successors, (219), 7 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:32:57,937 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:32:57,937 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-03-11 06:32:57,937 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:33:02,507 INFO L129 PetriNetUnfolder]: 6361/16584 cut-off events. [2021-03-11 06:33:02,508 INFO L130 PetriNetUnfolder]: For 833184/837261 co-relation queries the response was YES. [2021-03-11 06:33:02,617 INFO L84 FinitePrefix]: Finished finitePrefix Result has 164906 conditions, 16584 events. 6361/16584 cut-off events. For 833184/837261 co-relation queries the response was YES. Maximal size of possible extension queue 1384. Compared 196937 event pairs, 810 based on Foata normal form. 814/16863 useless extension candidates. Maximal degree in co-relation 164129. Up to 4096 conditions per place. [2021-03-11 06:33:02,685 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 202 selfloop transitions, 1113 changer transitions 2/1344 dead transitions. [2021-03-11 06:33:02,685 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 1344 transitions, 53156 flow [2021-03-11 06:33:02,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 06:33:02,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 06:33:02,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 281 transitions. [2021-03-11 06:33:02,686 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8726708074534162 [2021-03-11 06:33:02,686 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 281 transitions. [2021-03-11 06:33:02,686 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 281 transitions. [2021-03-11 06:33:02,686 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:33:02,686 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 281 transitions. [2021-03-11 06:33:02,687 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 40.142857142857146) internal successors, (281), 7 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:33:02,687 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 46.0) internal successors, (368), 8 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:33:02,687 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 46.0) internal successors, (368), 8 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:33:02,687 INFO L185 Difference]: Start difference. First operand has 262 places, 1281 transitions, 49282 flow. Second operand 7 states and 281 transitions. [2021-03-11 06:33:02,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 1344 transitions, 53156 flow [2021-03-11 06:33:05,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 1344 transitions, 52866 flow, removed 4 selfloop flow, removed 4 redundant places. [2021-03-11 06:33:05,590 INFO L241 Difference]: Finished difference. Result has 265 places, 1309 transitions, 51959 flow [2021-03-11 06:33:05,591 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=48998, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1085, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=51959, PETRI_PLACES=265, PETRI_TRANSITIONS=1309} [2021-03-11 06:33:05,591 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 210 predicate places. [2021-03-11 06:33:05,591 INFO L480 AbstractCegarLoop]: Abstraction has has 265 places, 1309 transitions, 51959 flow [2021-03-11 06:33:05,591 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 31.285714285714285) internal successors, (219), 7 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:33:05,591 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:33:05,591 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:33:05,591 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-03-11 06:33:05,591 INFO L428 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 06:33:05,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:33:05,592 INFO L82 PathProgramCache]: Analyzing trace with hash -579563554, now seen corresponding path program 42 times [2021-03-11 06:33:05,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:33:05,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477079531] [2021-03-11 06:33:05,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:33:05,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:33:05,601 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:33:05,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:33:05,603 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:33:05,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:33:05,606 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:33:05,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:33:05,609 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:33:05,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:33:05,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:33:05,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 06:33:05,613 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:33:05,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:33:05,614 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:33:05,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:33:05,614 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:33:05,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:33:05,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:33:05,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:33:05,623 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:33:05,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:33:05,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 06:33:05,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477079531] [2021-03-11 06:33:05,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:33:05,624 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 06:33:05,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606676838] [2021-03-11 06:33:05,624 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 06:33:05,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:33:05,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 06:33:05,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-03-11 06:33:05,625 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-03-11 06:33:05,625 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 1309 transitions, 51959 flow. Second operand has 8 states, 8 states have (on average 31.0) internal successors, (248), 8 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:33:05,625 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:33:05,625 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-03-11 06:33:05,625 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:33:10,122 INFO L129 PetriNetUnfolder]: 5507/15247 cut-off events. [2021-03-11 06:33:10,122 INFO L130 PetriNetUnfolder]: For 873158/876872 co-relation queries the response was YES. [2021-03-11 06:33:10,220 INFO L84 FinitePrefix]: Finished finitePrefix Result has 160824 conditions, 15247 events. 5507/15247 cut-off events. For 873158/876872 co-relation queries the response was YES. Maximal size of possible extension queue 1328. Compared 184500 event pairs, 645 based on Foata normal form. 1069/15903 useless extension candidates. Maximal degree in co-relation 160058. Up to 3074 conditions per place. [2021-03-11 06:33:10,281 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 218 selfloop transitions, 1134 changer transitions 22/1401 dead transitions. [2021-03-11 06:33:10,281 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 1401 transitions, 56442 flow [2021-03-11 06:33:10,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 06:33:10,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 06:33:10,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 364 transitions. [2021-03-11 06:33:10,282 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8792270531400966 [2021-03-11 06:33:10,282 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 364 transitions. [2021-03-11 06:33:10,282 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 364 transitions. [2021-03-11 06:33:10,282 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:33:10,282 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 364 transitions. [2021-03-11 06:33:10,283 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 40.44444444444444) internal successors, (364), 9 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:33:10,283 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 46.0) internal successors, (460), 10 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:33:10,283 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 46.0) internal successors, (460), 10 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:33:10,283 INFO L185 Difference]: Start difference. First operand has 265 places, 1309 transitions, 51959 flow. Second operand 9 states and 364 transitions. [2021-03-11 06:33:10,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 1401 transitions, 56442 flow [2021-03-11 06:33:13,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 1401 transitions, 55204 flow, removed 4 selfloop flow, removed 4 redundant places. [2021-03-11 06:33:13,155 INFO L241 Difference]: Finished difference. Result has 271 places, 1328 transitions, 53368 flow [2021-03-11 06:33:13,156 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=50617, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1089, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=53368, PETRI_PLACES=271, PETRI_TRANSITIONS=1328} [2021-03-11 06:33:13,156 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 216 predicate places. [2021-03-11 06:33:13,156 INFO L480 AbstractCegarLoop]: Abstraction has has 271 places, 1328 transitions, 53368 flow [2021-03-11 06:33:13,156 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 31.0) internal successors, (248), 8 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:33:13,156 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:33:13,156 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:33:13,156 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-03-11 06:33:13,156 INFO L428 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 06:33:13,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:33:13,157 INFO L82 PathProgramCache]: Analyzing trace with hash 348550118, now seen corresponding path program 43 times [2021-03-11 06:33:13,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:33:13,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518269222] [2021-03-11 06:33:13,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:33:13,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:33:13,166 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:33:13,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:33:13,168 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:33:13,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:33:13,170 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:33:13,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:33:13,174 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:33:13,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:33:13,178 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:33:13,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:33:13,178 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:33:13,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:33:13,179 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:33:13,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 06:33:13,182 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:33:13,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:33:13,182 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:33:13,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:33:13,187 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:33:13,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:33:13,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 06:33:13,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518269222] [2021-03-11 06:33:13,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:33:13,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 06:33:13,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930919626] [2021-03-11 06:33:13,188 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 06:33:13,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:33:13,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 06:33:13,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-03-11 06:33:13,188 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-03-11 06:33:13,188 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 1328 transitions, 53368 flow. Second operand has 8 states, 8 states have (on average 31.0) internal successors, (248), 8 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:33:13,189 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:33:13,189 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-03-11 06:33:13,189 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:33:17,714 INFO L129 PetriNetUnfolder]: 5343/14584 cut-off events. [2021-03-11 06:33:17,715 INFO L130 PetriNetUnfolder]: For 857665/861783 co-relation queries the response was YES. [2021-03-11 06:33:17,810 INFO L84 FinitePrefix]: Finished finitePrefix Result has 157440 conditions, 14584 events. 5343/14584 cut-off events. For 857665/861783 co-relation queries the response was YES. Maximal size of possible extension queue 1323. Compared 174594 event pairs, 489 based on Foata normal form. 884/15018 useless extension candidates. Maximal degree in co-relation 156789. Up to 3481 conditions per place. [2021-03-11 06:33:17,870 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 104 selfloop transitions, 1237 changer transitions 18/1386 dead transitions. [2021-03-11 06:33:17,870 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 1386 transitions, 57453 flow [2021-03-11 06:33:17,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 06:33:17,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 06:33:17,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 363 transitions. [2021-03-11 06:33:17,871 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8768115942028986 [2021-03-11 06:33:17,871 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 363 transitions. [2021-03-11 06:33:17,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 363 transitions. [2021-03-11 06:33:17,872 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:33:17,872 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 363 transitions. [2021-03-11 06:33:17,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 40.333333333333336) internal successors, (363), 9 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:33:17,872 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 46.0) internal successors, (460), 10 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:33:17,872 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 46.0) internal successors, (460), 10 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:33:17,872 INFO L185 Difference]: Start difference. First operand has 271 places, 1328 transitions, 53368 flow. Second operand 9 states and 363 transitions. [2021-03-11 06:33:17,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 1386 transitions, 57453 flow [2021-03-11 06:33:20,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 1386 transitions, 55901 flow, removed 10 selfloop flow, removed 7 redundant places. [2021-03-11 06:33:20,501 INFO L241 Difference]: Finished difference. Result has 273 places, 1329 transitions, 54143 flow [2021-03-11 06:33:20,502 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=51843, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1218, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=54143, PETRI_PLACES=273, PETRI_TRANSITIONS=1329} [2021-03-11 06:33:20,502 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 218 predicate places. [2021-03-11 06:33:20,502 INFO L480 AbstractCegarLoop]: Abstraction has has 273 places, 1329 transitions, 54143 flow [2021-03-11 06:33:20,503 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 31.0) internal successors, (248), 8 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:33:20,503 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:33:20,503 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:33:20,503 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-03-11 06:33:20,503 INFO L428 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 06:33:20,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:33:20,503 INFO L82 PathProgramCache]: Analyzing trace with hash -971925820, now seen corresponding path program 44 times [2021-03-11 06:33:20,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:33:20,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115413001] [2021-03-11 06:33:20,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:33:20,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:33:20,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:33:20,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:33:20,520 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:33:20,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:33:20,522 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:33:20,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 06:33:20,525 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:33:20,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:33:20,526 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:33:20,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:33:20,529 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:33:20,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:33:20,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:33:20,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:33:20,537 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:33:20,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:33:20,543 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:33:20,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:33:20,549 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:33:20,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:33:20,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 06:33:20,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115413001] [2021-03-11 06:33:20,549 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:33:20,549 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-11 06:33:20,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974454288] [2021-03-11 06:33:20,550 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-11 06:33:20,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:33:20,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-11 06:33:20,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-03-11 06:33:20,552 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-03-11 06:33:20,553 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 1329 transitions, 54143 flow. Second operand has 10 states, 10 states have (on average 30.6) internal successors, (306), 10 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:33:20,553 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:33:20,553 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-03-11 06:33:20,553 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:33:25,144 INFO L129 PetriNetUnfolder]: 5259/14450 cut-off events. [2021-03-11 06:33:25,144 INFO L130 PetriNetUnfolder]: For 853599/857133 co-relation queries the response was YES. [2021-03-11 06:33:25,227 INFO L84 FinitePrefix]: Finished finitePrefix Result has 155884 conditions, 14450 events. 5259/14450 cut-off events. For 853599/857133 co-relation queries the response was YES. Maximal size of possible extension queue 1308. Compared 173742 event pairs, 455 based on Foata normal form. 897/14902 useless extension candidates. Maximal degree in co-relation 155235. Up to 2975 conditions per place. [2021-03-11 06:33:25,287 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 128 selfloop transitions, 1266 changer transitions 13/1434 dead transitions. [2021-03-11 06:33:25,287 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 1434 transitions, 58981 flow [2021-03-11 06:33:25,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-11 06:33:25,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-11 06:33:25,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 525 transitions. [2021-03-11 06:33:25,288 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8779264214046822 [2021-03-11 06:33:25,288 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 525 transitions. [2021-03-11 06:33:25,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 525 transitions. [2021-03-11 06:33:25,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:33:25,288 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 525 transitions. [2021-03-11 06:33:25,289 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 40.38461538461539) internal successors, (525), 13 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:33:25,290 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 46.0) internal successors, (644), 14 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:33:25,290 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 46.0) internal successors, (644), 14 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:33:25,290 INFO L185 Difference]: Start difference. First operand has 273 places, 1329 transitions, 54143 flow. Second operand 13 states and 525 transitions. [2021-03-11 06:33:25,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 1434 transitions, 58981 flow [2021-03-11 06:33:27,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 1434 transitions, 58267 flow, removed 7 selfloop flow, removed 4 redundant places. [2021-03-11 06:33:27,555 INFO L241 Difference]: Finished difference. Result has 283 places, 1359 transitions, 56954 flow [2021-03-11 06:33:27,555 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=53452, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1233, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=56954, PETRI_PLACES=283, PETRI_TRANSITIONS=1359} [2021-03-11 06:33:27,555 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 228 predicate places. [2021-03-11 06:33:27,555 INFO L480 AbstractCegarLoop]: Abstraction has has 283 places, 1359 transitions, 56954 flow [2021-03-11 06:33:27,555 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 30.6) internal successors, (306), 10 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:33:27,555 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:33:27,556 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:33:27,556 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-03-11 06:33:27,556 INFO L428 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 06:33:27,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:33:27,556 INFO L82 PathProgramCache]: Analyzing trace with hash 154114202, now seen corresponding path program 45 times [2021-03-11 06:33:27,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:33:27,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850042239] [2021-03-11 06:33:27,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:33:27,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:33:27,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:33:27,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:33:27,567 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:33:27,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:33:27,570 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:33:27,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 06:33:27,573 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:33:27,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:33:27,573 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:33:27,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:33:27,577 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:33:27,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:33:27,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:33:27,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:33:27,704 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:33:27,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:33:27,709 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:33:27,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:33:27,715 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:33:27,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:33:27,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 06:33:27,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850042239] [2021-03-11 06:33:27,715 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:33:27,715 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-11 06:33:27,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090314809] [2021-03-11 06:33:27,715 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-11 06:33:27,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:33:27,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-11 06:33:27,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-03-11 06:33:27,716 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-03-11 06:33:27,716 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 1359 transitions, 56954 flow. Second operand has 10 states, 10 states have (on average 30.6) internal successors, (306), 10 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:33:27,716 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:33:27,716 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-03-11 06:33:27,717 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:33:32,305 INFO L129 PetriNetUnfolder]: 5350/14886 cut-off events. [2021-03-11 06:33:32,306 INFO L130 PetriNetUnfolder]: For 937980/941577 co-relation queries the response was YES. [2021-03-11 06:33:32,423 INFO L84 FinitePrefix]: Finished finitePrefix Result has 163661 conditions, 14886 events. 5350/14886 cut-off events. For 937980/941577 co-relation queries the response was YES. Maximal size of possible extension queue 1314. Compared 180485 event pairs, 501 based on Foata normal form. 746/15191 useless extension candidates. Maximal degree in co-relation 162904. Up to 3010 conditions per place. [2021-03-11 06:33:32,487 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 123 selfloop transitions, 1231 changer transitions 80/1461 dead transitions. [2021-03-11 06:33:32,487 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 1461 transitions, 62036 flow [2021-03-11 06:33:32,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-11 06:33:32,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-11 06:33:32,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 522 transitions. [2021-03-11 06:33:32,488 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8729096989966555 [2021-03-11 06:33:32,488 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 522 transitions. [2021-03-11 06:33:32,488 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 522 transitions. [2021-03-11 06:33:32,488 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:33:32,488 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 522 transitions. [2021-03-11 06:33:32,489 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 40.15384615384615) internal successors, (522), 13 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:33:32,489 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 46.0) internal successors, (644), 14 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:33:32,489 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 46.0) internal successors, (644), 14 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:33:32,489 INFO L185 Difference]: Start difference. First operand has 283 places, 1359 transitions, 56954 flow. Second operand 13 states and 522 transitions. [2021-03-11 06:33:32,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 1461 transitions, 62036 flow [2021-03-11 06:33:35,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 1461 transitions, 61034 flow, removed 22 selfloop flow, removed 6 redundant places. [2021-03-11 06:33:35,478 INFO L241 Difference]: Finished difference. Result has 291 places, 1329 transitions, 57822 flow [2021-03-11 06:33:35,478 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=56014, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1227, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=57822, PETRI_PLACES=291, PETRI_TRANSITIONS=1329} [2021-03-11 06:33:35,478 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 236 predicate places. [2021-03-11 06:33:35,478 INFO L480 AbstractCegarLoop]: Abstraction has has 291 places, 1329 transitions, 57822 flow [2021-03-11 06:33:35,478 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 30.6) internal successors, (306), 10 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:33:35,478 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:33:35,479 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:33:35,479 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-03-11 06:33:35,479 INFO L428 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 06:33:35,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:33:35,479 INFO L82 PathProgramCache]: Analyzing trace with hash -125643260, now seen corresponding path program 46 times [2021-03-11 06:33:35,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:33:35,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882377882] [2021-03-11 06:33:35,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:33:35,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:33:35,493 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:33:35,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:33:35,495 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:33:35,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:33:35,497 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:33:35,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 06:33:35,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:33:35,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:33:35,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:33:35,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:33:35,504 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:33:35,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:33:35,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:33:35,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:33:35,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:33:35,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:33:35,519 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:33:35,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:33:35,526 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:33:35,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:33:35,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 06:33:35,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882377882] [2021-03-11 06:33:35,526 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:33:35,526 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-11 06:33:35,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784174802] [2021-03-11 06:33:35,526 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-11 06:33:35,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:33:35,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-11 06:33:35,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-03-11 06:33:35,527 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-03-11 06:33:35,527 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 1329 transitions, 57822 flow. Second operand has 10 states, 10 states have (on average 30.6) internal successors, (306), 10 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:33:35,528 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:33:35,528 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-03-11 06:33:35,528 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:33:40,335 INFO L129 PetriNetUnfolder]: 5190/14730 cut-off events. [2021-03-11 06:33:40,335 INFO L130 PetriNetUnfolder]: For 991640/994888 co-relation queries the response was YES. [2021-03-11 06:33:40,428 INFO L84 FinitePrefix]: Finished finitePrefix Result has 165523 conditions, 14730 events. 5190/14730 cut-off events. For 991640/994888 co-relation queries the response was YES. Maximal size of possible extension queue 1261. Compared 179759 event pairs, 475 based on Foata normal form. 871/15171 useless extension candidates. Maximal degree in co-relation 164719. Up to 2948 conditions per place. [2021-03-11 06:33:40,488 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 124 selfloop transitions, 1241 changer transitions 26/1418 dead transitions. [2021-03-11 06:33:40,488 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 1418 transitions, 62342 flow [2021-03-11 06:33:40,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-11 06:33:40,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-11 06:33:40,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 525 transitions. [2021-03-11 06:33:40,489 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8779264214046822 [2021-03-11 06:33:40,489 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 525 transitions. [2021-03-11 06:33:40,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 525 transitions. [2021-03-11 06:33:40,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:33:40,490 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 525 transitions. [2021-03-11 06:33:40,490 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 40.38461538461539) internal successors, (525), 13 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:33:40,491 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 46.0) internal successors, (644), 14 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:33:40,491 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 46.0) internal successors, (644), 14 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:33:40,491 INFO L185 Difference]: Start difference. First operand has 291 places, 1329 transitions, 57822 flow. Second operand 13 states and 525 transitions. [2021-03-11 06:33:40,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 1418 transitions, 62342 flow [2021-03-11 06:33:43,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 1418 transitions, 62131 flow, removed 11 selfloop flow, removed 4 redundant places. [2021-03-11 06:33:43,236 INFO L241 Difference]: Finished difference. Result has 301 places, 1333 transitions, 60400 flow [2021-03-11 06:33:43,236 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=57635, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1216, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=60400, PETRI_PLACES=301, PETRI_TRANSITIONS=1333} [2021-03-11 06:33:43,236 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 246 predicate places. [2021-03-11 06:33:43,236 INFO L480 AbstractCegarLoop]: Abstraction has has 301 places, 1333 transitions, 60400 flow [2021-03-11 06:33:43,237 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 30.6) internal successors, (306), 10 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:33:43,237 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:33:43,237 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:33:43,237 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-03-11 06:33:43,237 INFO L428 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 06:33:43,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:33:43,237 INFO L82 PathProgramCache]: Analyzing trace with hash -306134074, now seen corresponding path program 47 times [2021-03-11 06:33:43,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:33:43,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241866693] [2021-03-11 06:33:43,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:33:43,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:33:43,248 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:33:43,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:33:43,250 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:33:43,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:33:43,252 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:33:43,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 06:33:43,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:33:43,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:33:43,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:33:43,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:33:43,259 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:33:43,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:33:43,263 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:33:43,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:33:43,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:33:43,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:33:43,273 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:33:43,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:33:43,278 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:33:43,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:33:43,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 06:33:43,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241866693] [2021-03-11 06:33:43,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:33:43,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-11 06:33:43,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464666486] [2021-03-11 06:33:43,279 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-11 06:33:43,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:33:43,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-11 06:33:43,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-03-11 06:33:43,280 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-03-11 06:33:43,280 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 1333 transitions, 60400 flow. Second operand has 10 states, 10 states have (on average 30.6) internal successors, (306), 10 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:33:43,280 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:33:43,280 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-03-11 06:33:43,280 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:33:48,183 INFO L129 PetriNetUnfolder]: 5169/14725 cut-off events. [2021-03-11 06:33:48,183 INFO L130 PetriNetUnfolder]: For 1066693/1070478 co-relation queries the response was YES. [2021-03-11 06:33:48,283 INFO L84 FinitePrefix]: Finished finitePrefix Result has 170954 conditions, 14725 events. 5169/14725 cut-off events. For 1066693/1070478 co-relation queries the response was YES. Maximal size of possible extension queue 1277. Compared 180371 event pairs, 460 based on Foata normal form. 779/15056 useless extension candidates. Maximal degree in co-relation 170154. Up to 2941 conditions per place. [2021-03-11 06:33:48,344 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 124 selfloop transitions, 1233 changer transitions 36/1420 dead transitions. [2021-03-11 06:33:48,344 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 1420 transitions, 64950 flow [2021-03-11 06:33:48,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-11 06:33:48,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-11 06:33:48,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 525 transitions. [2021-03-11 06:33:48,345 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8779264214046822 [2021-03-11 06:33:48,345 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 525 transitions. [2021-03-11 06:33:48,345 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 525 transitions. [2021-03-11 06:33:48,346 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:33:48,346 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 525 transitions. [2021-03-11 06:33:48,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 40.38461538461539) internal successors, (525), 13 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:33:48,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 46.0) internal successors, (644), 14 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:33:48,347 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 46.0) internal successors, (644), 14 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:33:48,347 INFO L185 Difference]: Start difference. First operand has 301 places, 1333 transitions, 60400 flow. Second operand 13 states and 525 transitions. [2021-03-11 06:33:48,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 1420 transitions, 64950 flow [2021-03-11 06:33:51,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 1420 transitions, 64413 flow, removed 33 selfloop flow, removed 6 redundant places. [2021-03-11 06:33:51,134 INFO L241 Difference]: Finished difference. Result has 309 places, 1325 transitions, 62340 flow [2021-03-11 06:33:51,134 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=59927, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1212, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=62340, PETRI_PLACES=309, PETRI_TRANSITIONS=1325} [2021-03-11 06:33:51,134 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 254 predicate places. [2021-03-11 06:33:51,135 INFO L480 AbstractCegarLoop]: Abstraction has has 309 places, 1325 transitions, 62340 flow [2021-03-11 06:33:51,135 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 30.6) internal successors, (306), 10 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:33:51,135 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:33:51,135 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:33:51,135 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-03-11 06:33:51,135 INFO L428 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 06:33:51,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:33:51,135 INFO L82 PathProgramCache]: Analyzing trace with hash 1640395698, now seen corresponding path program 48 times [2021-03-11 06:33:51,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:33:51,135 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607443024] [2021-03-11 06:33:51,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:33:51,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:33:51,146 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:33:51,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:33:51,148 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:33:51,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:33:51,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:33:51,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:33:51,154 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:33:51,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:33:51,158 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:33:51,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:33:51,164 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:33:51,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:33:51,169 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:33:51,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:33:51,174 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:33:51,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:33:51,180 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:33:51,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:33:51,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 06:33:51,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607443024] [2021-03-11 06:33:51,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:33:51,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-11 06:33:51,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612368612] [2021-03-11 06:33:51,181 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-11 06:33:51,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:33:51,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-11 06:33:51,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-03-11 06:33:51,182 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-03-11 06:33:51,182 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 1325 transitions, 62340 flow. Second operand has 10 states, 10 states have (on average 30.6) internal successors, (306), 10 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:33:51,182 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:33:51,182 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-03-11 06:33:51,182 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:33:54,450 INFO L129 PetriNetUnfolder]: 2644/8788 cut-off events. [2021-03-11 06:33:54,451 INFO L130 PetriNetUnfolder]: For 542358/544998 co-relation queries the response was YES. [2021-03-11 06:33:54,503 INFO L84 FinitePrefix]: Finished finitePrefix Result has 106967 conditions, 8788 events. 2644/8788 cut-off events. For 542358/544998 co-relation queries the response was YES. Maximal size of possible extension queue 800. Compared 106904 event pairs, 731 based on Foata normal form. 944/9621 useless extension candidates. Maximal degree in co-relation 106468. Up to 2748 conditions per place. [2021-03-11 06:33:54,534 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 355 selfloop transitions, 621 changer transitions 161/1164 dead transitions. [2021-03-11 06:33:54,534 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 1164 transitions, 53423 flow [2021-03-11 06:33:54,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-11 06:33:54,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-11 06:33:54,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 507 transitions. [2021-03-11 06:33:54,535 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8478260869565217 [2021-03-11 06:33:54,535 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 507 transitions. [2021-03-11 06:33:54,535 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 507 transitions. [2021-03-11 06:33:54,535 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:33:54,535 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 507 transitions. [2021-03-11 06:33:54,536 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 39.0) internal successors, (507), 13 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:33:54,537 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 46.0) internal successors, (644), 14 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:33:54,537 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 46.0) internal successors, (644), 14 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:33:54,537 INFO L185 Difference]: Start difference. First operand has 309 places, 1325 transitions, 62340 flow. Second operand 13 states and 507 transitions. [2021-03-11 06:33:54,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 1164 transitions, 53423 flow [2021-03-11 06:33:55,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 1164 transitions, 52994 flow, removed 22 selfloop flow, removed 6 redundant places. [2021-03-11 06:33:55,879 INFO L241 Difference]: Finished difference. Result has 320 places, 962 transitions, 42067 flow [2021-03-11 06:33:55,879 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=49090, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=612, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=491, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=42067, PETRI_PLACES=320, PETRI_TRANSITIONS=962} [2021-03-11 06:33:55,879 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 265 predicate places. [2021-03-11 06:33:55,879 INFO L480 AbstractCegarLoop]: Abstraction has has 320 places, 962 transitions, 42067 flow [2021-03-11 06:33:55,879 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 30.6) internal successors, (306), 10 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:33:55,880 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:33:55,880 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:33:55,880 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-03-11 06:33:55,880 INFO L428 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 06:33:55,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:33:55,880 INFO L82 PathProgramCache]: Analyzing trace with hash 276865628, now seen corresponding path program 49 times [2021-03-11 06:33:55,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:33:55,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616015576] [2021-03-11 06:33:55,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:33:55,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:33:55,888 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:33:55,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:33:55,890 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:33:55,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:33:55,893 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:33:55,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:33:55,896 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:33:55,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:33:55,897 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:33:55,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:33:55,897 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:33:55,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:33:55,898 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:33:55,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:33:55,902 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:33:55,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:33:55,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 06:33:55,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616015576] [2021-03-11 06:33:55,902 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:33:55,902 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-11 06:33:55,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126444681] [2021-03-11 06:33:55,902 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 06:33:55,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:33:55,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 06:33:55,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-03-11 06:33:55,903 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-03-11 06:33:55,903 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 962 transitions, 42067 flow. Second operand has 6 states, 6 states have (on average 31.666666666666668) internal successors, (190), 6 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:33:55,903 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:33:55,903 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-03-11 06:33:55,904 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:33:57,850 INFO L129 PetriNetUnfolder]: 2130/7140 cut-off events. [2021-03-11 06:33:57,851 INFO L130 PetriNetUnfolder]: For 400536/402478 co-relation queries the response was YES. [2021-03-11 06:33:57,901 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80756 conditions, 7140 events. 2130/7140 cut-off events. For 400536/402478 co-relation queries the response was YES. Maximal size of possible extension queue 631. Compared 83825 event pairs, 804 based on Foata normal form. 379/7418 useless extension candidates. Maximal degree in co-relation 80257. Up to 3560 conditions per place. [2021-03-11 06:33:57,927 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 544 selfloop transitions, 312 changer transitions 23/906 dead transitions. [2021-03-11 06:33:57,927 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 906 transitions, 39457 flow [2021-03-11 06:33:57,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-11 06:33:57,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-11 06:33:57,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 234 transitions. [2021-03-11 06:33:57,928 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8478260869565217 [2021-03-11 06:33:57,928 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 234 transitions. [2021-03-11 06:33:57,928 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 234 transitions. [2021-03-11 06:33:57,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:33:57,928 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 234 transitions. [2021-03-11 06:33:57,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 39.0) internal successors, (234), 6 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:33:57,928 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 46.0) internal successors, (322), 7 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:33:57,928 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 46.0) internal successors, (322), 7 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:33:57,928 INFO L185 Difference]: Start difference. First operand has 320 places, 962 transitions, 42067 flow. Second operand 6 states and 234 transitions. [2021-03-11 06:33:57,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 906 transitions, 39457 flow [2021-03-11 06:33:58,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 906 transitions, 38852 flow, removed 1 selfloop flow, removed 7 redundant places. [2021-03-11 06:33:58,936 INFO L241 Difference]: Finished difference. Result has 319 places, 870 transitions, 36443 flow [2021-03-11 06:33:58,936 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=36624, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=886, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=312, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=574, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=36443, PETRI_PLACES=319, PETRI_TRANSITIONS=870} [2021-03-11 06:33:58,936 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 264 predicate places. [2021-03-11 06:33:58,936 INFO L480 AbstractCegarLoop]: Abstraction has has 319 places, 870 transitions, 36443 flow [2021-03-11 06:33:58,936 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 31.666666666666668) internal successors, (190), 6 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:33:58,936 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:33:58,936 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:33:58,937 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-03-11 06:33:58,937 INFO L428 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 06:33:58,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:33:58,937 INFO L82 PathProgramCache]: Analyzing trace with hash 1532363518, now seen corresponding path program 50 times [2021-03-11 06:33:58,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:33:58,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538941857] [2021-03-11 06:33:58,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:33:58,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:33:58,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:33:58,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:33:58,959 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:33:58,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:33:58,961 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:33:58,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:33:58,966 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:33:58,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:33:58,966 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:33:58,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:33:58,967 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:33:58,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:33:58,967 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:33:58,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:33:58,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:33:58,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:33:58,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:33:58,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:33:58,976 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:33:58,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:33:58,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 06:33:58,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538941857] [2021-03-11 06:33:58,977 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:33:58,977 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 06:33:58,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887487443] [2021-03-11 06:33:58,977 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 06:33:58,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:33:58,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 06:33:58,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-03-11 06:33:58,978 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-03-11 06:33:58,978 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 870 transitions, 36443 flow. Second operand has 7 states, 7 states have (on average 31.285714285714285) internal successors, (219), 7 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:33:58,978 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:33:58,978 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-03-11 06:33:58,978 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:34:00,591 INFO L129 PetriNetUnfolder]: 1786/5812 cut-off events. [2021-03-11 06:34:00,592 INFO L130 PetriNetUnfolder]: For 301526/302804 co-relation queries the response was YES. [2021-03-11 06:34:00,628 INFO L84 FinitePrefix]: Finished finitePrefix Result has 62846 conditions, 5812 events. 1786/5812 cut-off events. For 301526/302804 co-relation queries the response was YES. Maximal size of possible extension queue 503. Compared 64422 event pairs, 758 based on Foata normal form. 124/5830 useless extension candidates. Maximal degree in co-relation 62468. Up to 3124 conditions per place. [2021-03-11 06:34:00,647 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 446 selfloop transitions, 198 changer transitions 50/721 dead transitions. [2021-03-11 06:34:00,648 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 721 transitions, 29962 flow [2021-03-11 06:34:00,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 06:34:00,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-11 06:34:00,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 312 transitions. [2021-03-11 06:34:00,648 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8478260869565217 [2021-03-11 06:34:00,648 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 312 transitions. [2021-03-11 06:34:00,648 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 312 transitions. [2021-03-11 06:34:00,648 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:34:00,649 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 312 transitions. [2021-03-11 06:34:00,649 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 39.0) internal successors, (312), 8 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:34:00,649 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 46.0) internal successors, (414), 9 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:34:00,649 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 46.0) internal successors, (414), 9 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:34:00,649 INFO L185 Difference]: Start difference. First operand has 319 places, 870 transitions, 36443 flow. Second operand 8 states and 312 transitions. [2021-03-11 06:34:00,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 721 transitions, 29962 flow [2021-03-11 06:34:01,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 721 transitions, 29370 flow, removed 31 selfloop flow, removed 10 redundant places. [2021-03-11 06:34:01,239 INFO L241 Difference]: Finished difference. Result has 318 places, 652 transitions, 25189 flow [2021-03-11 06:34:01,239 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=27138, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=691, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=195, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=496, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=25189, PETRI_PLACES=318, PETRI_TRANSITIONS=652} [2021-03-11 06:34:01,239 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 263 predicate places. [2021-03-11 06:34:01,239 INFO L480 AbstractCegarLoop]: Abstraction has has 318 places, 652 transitions, 25189 flow [2021-03-11 06:34:01,240 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 31.285714285714285) internal successors, (219), 7 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:34:01,240 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:34:01,240 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:34:01,240 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-03-11 06:34:01,240 INFO L428 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 06:34:01,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:34:01,240 INFO L82 PathProgramCache]: Analyzing trace with hash -1553148950, now seen corresponding path program 51 times [2021-03-11 06:34:01,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:34:01,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237730197] [2021-03-11 06:34:01,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:34:01,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:34:01,252 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:34:01,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:34:01,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:34:01,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:34:01,257 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:34:01,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:34:01,260 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:34:01,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:34:01,264 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:34:01,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:34:01,269 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:34:01,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:34:01,269 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:34:01,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:34:01,273 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:34:01,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:34:01,278 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:34:01,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:34:01,283 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:34:01,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:34:01,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 06:34:01,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237730197] [2021-03-11 06:34:01,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:34:01,284 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-11 06:34:01,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152436585] [2021-03-11 06:34:01,284 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-11 06:34:01,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:34:01,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-11 06:34:01,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-03-11 06:34:01,285 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-03-11 06:34:01,285 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 652 transitions, 25189 flow. Second operand has 10 states, 10 states have (on average 30.6) internal successors, (306), 10 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:34:01,285 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:34:01,285 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-03-11 06:34:01,285 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:34:02,520 INFO L129 PetriNetUnfolder]: 1532/4840 cut-off events. [2021-03-11 06:34:02,520 INFO L130 PetriNetUnfolder]: For 222255/223058 co-relation queries the response was YES. [2021-03-11 06:34:02,548 INFO L84 FinitePrefix]: Finished finitePrefix Result has 50127 conditions, 4840 events. 1532/4840 cut-off events. For 222255/223058 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 51510 event pairs, 656 based on Foata normal form. 84/4831 useless extension candidates. Maximal degree in co-relation 49813. Up to 2612 conditions per place. [2021-03-11 06:34:02,563 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 319 selfloop transitions, 73 changer transitions 160/579 dead transitions. [2021-03-11 06:34:02,563 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 579 transitions, 23214 flow [2021-03-11 06:34:02,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-03-11 06:34:02,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-03-11 06:34:02,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 446 transitions. [2021-03-11 06:34:02,564 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8079710144927537 [2021-03-11 06:34:02,564 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 446 transitions. [2021-03-11 06:34:02,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 446 transitions. [2021-03-11 06:34:02,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:34:02,564 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 446 transitions. [2021-03-11 06:34:02,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 37.166666666666664) internal successors, (446), 12 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:34:02,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 46.0) internal successors, (598), 13 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:34:02,565 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 46.0) internal successors, (598), 13 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:34:02,565 INFO L185 Difference]: Start difference. First operand has 318 places, 652 transitions, 25189 flow. Second operand 12 states and 446 transitions. [2021-03-11 06:34:02,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 579 transitions, 23214 flow [2021-03-11 06:34:03,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 579 transitions, 22289 flow, removed 119 selfloop flow, removed 24 redundant places. [2021-03-11 06:34:03,016 INFO L241 Difference]: Finished difference. Result has 303 places, 396 transitions, 11927 flow [2021-03-11 06:34:03,017 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=20725, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=550, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=477, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=11927, PETRI_PLACES=303, PETRI_TRANSITIONS=396} [2021-03-11 06:34:03,017 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 248 predicate places. [2021-03-11 06:34:03,017 INFO L480 AbstractCegarLoop]: Abstraction has has 303 places, 396 transitions, 11927 flow [2021-03-11 06:34:03,017 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 30.6) internal successors, (306), 10 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:34:03,017 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:34:03,017 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:34:03,017 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-03-11 06:34:03,017 INFO L428 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 06:34:03,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:34:03,018 INFO L82 PathProgramCache]: Analyzing trace with hash 677302440, now seen corresponding path program 52 times [2021-03-11 06:34:03,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:34:03,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889840774] [2021-03-11 06:34:03,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:34:03,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:34:03,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:34:03,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:34:03,028 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:34:03,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:34:03,031 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:34:03,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:34:03,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:34:03,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:34:03,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:34:03,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:34:03,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:34:03,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:34:03,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:34:03,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 06:34:03,038 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:34:03,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:34:03,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:34:03,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:34:03,042 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:34:03,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:34:03,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 06:34:03,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889840774] [2021-03-11 06:34:03,043 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:34:03,043 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 06:34:03,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047364532] [2021-03-11 06:34:03,043 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 06:34:03,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:34:03,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 06:34:03,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-11 06:34:03,044 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-03-11 06:34:03,044 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 396 transitions, 11927 flow. Second operand has 7 states, 7 states have (on average 31.285714285714285) internal successors, (219), 7 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:34:03,044 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:34:03,044 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-03-11 06:34:03,044 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:34:03,336 INFO L129 PetriNetUnfolder]: 368/1390 cut-off events. [2021-03-11 06:34:03,336 INFO L130 PetriNetUnfolder]: For 53555/53757 co-relation queries the response was YES. [2021-03-11 06:34:03,345 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13620 conditions, 1390 events. 368/1390 cut-off events. For 53555/53757 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 11403 event pairs, 27 based on Foata normal form. 252/1632 useless extension candidates. Maximal degree in co-relation 13485. Up to 556 conditions per place. [2021-03-11 06:34:03,348 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 65 selfloop transitions, 153 changer transitions 38/283 dead transitions. [2021-03-11 06:34:03,348 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 283 transitions, 8700 flow [2021-03-11 06:34:03,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 06:34:03,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 06:34:03,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 278 transitions. [2021-03-11 06:34:03,349 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8633540372670807 [2021-03-11 06:34:03,349 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 278 transitions. [2021-03-11 06:34:03,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 278 transitions. [2021-03-11 06:34:03,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:34:03,349 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 278 transitions. [2021-03-11 06:34:03,350 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 39.714285714285715) internal successors, (278), 7 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:34:03,350 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 46.0) internal successors, (368), 8 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:34:03,350 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 46.0) internal successors, (368), 8 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:34:03,350 INFO L185 Difference]: Start difference. First operand has 303 places, 396 transitions, 11927 flow. Second operand 7 states and 278 transitions. [2021-03-11 06:34:03,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 283 transitions, 8700 flow [2021-03-11 06:34:03,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 283 transitions, 7076 flow, removed 84 selfloop flow, removed 70 redundant places. [2021-03-11 06:34:03,436 INFO L241 Difference]: Finished difference. Result has 216 places, 227 transitions, 5597 flow [2021-03-11 06:34:03,436 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5954, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5597, PETRI_PLACES=216, PETRI_TRANSITIONS=227} [2021-03-11 06:34:03,436 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 161 predicate places. [2021-03-11 06:34:03,436 INFO L480 AbstractCegarLoop]: Abstraction has has 216 places, 227 transitions, 5597 flow [2021-03-11 06:34:03,436 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 31.285714285714285) internal successors, (219), 7 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:34:03,436 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:34:03,436 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:34:03,437 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-03-11 06:34:03,437 INFO L428 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 06:34:03,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:34:03,437 INFO L82 PathProgramCache]: Analyzing trace with hash 595688788, now seen corresponding path program 53 times [2021-03-11 06:34:03,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:34:03,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086466216] [2021-03-11 06:34:03,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:34:03,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:34:03,445 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:34:03,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:34:03,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:34:03,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:34:03,450 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:34:03,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:34:03,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:34:03,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:34:03,458 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:34:03,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:34:03,462 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:34:03,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:34:03,466 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:34:03,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:34:03,471 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:34:03,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:34:03,477 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:34:03,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:34:03,483 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:34:03,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:34:03,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 06:34:03,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086466216] [2021-03-11 06:34:03,484 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:34:03,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-11 06:34:03,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570927584] [2021-03-11 06:34:03,484 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-11 06:34:03,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:34:03,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-11 06:34:03,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-03-11 06:34:03,485 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-03-11 06:34:03,485 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 227 transitions, 5597 flow. Second operand has 11 states, 11 states have (on average 30.454545454545453) internal successors, (335), 11 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:34:03,485 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:34:03,485 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-03-11 06:34:03,485 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:34:03,706 INFO L129 PetriNetUnfolder]: 259/1040 cut-off events. [2021-03-11 06:34:03,706 INFO L130 PetriNetUnfolder]: For 29577/29715 co-relation queries the response was YES. [2021-03-11 06:34:03,709 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8106 conditions, 1040 events. 259/1040 cut-off events. For 29577/29715 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 8026 event pairs, 114 based on Foata normal form. 9/1041 useless extension candidates. Maximal degree in co-relation 8000. Up to 548 conditions per place. [2021-03-11 06:34:03,711 INFO L132 encePairwiseOnDemand]: 36/46 looper letters, 143 selfloop transitions, 40 changer transitions 35/245 dead transitions. [2021-03-11 06:34:03,711 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 245 transitions, 6291 flow [2021-03-11 06:34:03,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-11 06:34:03,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-11 06:34:03,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 387 transitions. [2021-03-11 06:34:03,712 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7648221343873518 [2021-03-11 06:34:03,712 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 387 transitions. [2021-03-11 06:34:03,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 387 transitions. [2021-03-11 06:34:03,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:34:03,712 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 387 transitions. [2021-03-11 06:34:03,713 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 35.18181818181818) internal successors, (387), 11 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:34:03,713 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:34:03,714 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:34:03,714 INFO L185 Difference]: Start difference. First operand has 216 places, 227 transitions, 5597 flow. Second operand 11 states and 387 transitions. [2021-03-11 06:34:03,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 245 transitions, 6291 flow [2021-03-11 06:34:03,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 245 transitions, 5597 flow, removed 23 selfloop flow, removed 22 redundant places. [2021-03-11 06:34:03,753 INFO L241 Difference]: Finished difference. Result has 205 places, 201 transitions, 4353 flow [2021-03-11 06:34:03,753 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4911, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4353, PETRI_PLACES=205, PETRI_TRANSITIONS=201} [2021-03-11 06:34:03,753 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 150 predicate places. [2021-03-11 06:34:03,753 INFO L480 AbstractCegarLoop]: Abstraction has has 205 places, 201 transitions, 4353 flow [2021-03-11 06:34:03,753 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 30.454545454545453) internal successors, (335), 11 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:34:03,753 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:34:03,753 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:34:03,753 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-03-11 06:34:03,753 INFO L428 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 06:34:03,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:34:03,753 INFO L82 PathProgramCache]: Analyzing trace with hash 1437688870, now seen corresponding path program 54 times [2021-03-11 06:34:03,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:34:03,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631242831] [2021-03-11 06:34:03,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:34:03,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:34:03,764 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:34:03,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:34:03,767 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:34:03,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:34:03,770 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:34:03,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:34:03,773 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:34:03,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:34:03,773 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:34:03,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 06:34:03,777 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:34:03,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:34:03,777 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:34:03,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:34:03,778 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:34:03,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:34:03,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:34:03,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:34:03,787 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:34:03,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:34:03,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 06:34:03,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631242831] [2021-03-11 06:34:03,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:34:03,789 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 06:34:03,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959741267] [2021-03-11 06:34:03,789 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 06:34:03,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:34:03,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 06:34:03,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-03-11 06:34:03,790 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-03-11 06:34:03,790 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 201 transitions, 4353 flow. Second operand has 8 states, 8 states have (on average 31.0) internal successors, (248), 8 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:34:03,790 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:34:03,790 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-03-11 06:34:03,790 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:34:03,953 INFO L129 PetriNetUnfolder]: 130/540 cut-off events. [2021-03-11 06:34:03,953 INFO L130 PetriNetUnfolder]: For 12513/12564 co-relation queries the response was YES. [2021-03-11 06:34:03,955 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4524 conditions, 540 events. 130/540 cut-off events. For 12513/12564 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3460 event pairs, 5 based on Foata normal form. 45/584 useless extension candidates. Maximal degree in co-relation 4459. Up to 174 conditions per place. [2021-03-11 06:34:03,956 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 41 selfloop transitions, 59 changer transitions 46/170 dead transitions. [2021-03-11 06:34:03,956 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 170 transitions, 3906 flow [2021-03-11 06:34:03,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 06:34:03,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 06:34:03,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 339 transitions. [2021-03-11 06:34:03,956 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8188405797101449 [2021-03-11 06:34:03,957 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 339 transitions. [2021-03-11 06:34:03,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 339 transitions. [2021-03-11 06:34:03,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:34:03,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 339 transitions. [2021-03-11 06:34:03,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 37.666666666666664) internal successors, (339), 9 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:34:03,958 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 46.0) internal successors, (460), 10 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:34:03,958 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 46.0) internal successors, (460), 10 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:34:03,958 INFO L185 Difference]: Start difference. First operand has 205 places, 201 transitions, 4353 flow. Second operand 9 states and 339 transitions. [2021-03-11 06:34:03,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 170 transitions, 3906 flow [2021-03-11 06:34:03,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 170 transitions, 2848 flow, removed 47 selfloop flow, removed 48 redundant places. [2021-03-11 06:34:03,978 INFO L241 Difference]: Finished difference. Result has 146 places, 105 transitions, 1611 flow [2021-03-11 06:34:03,978 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2331, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1611, PETRI_PLACES=146, PETRI_TRANSITIONS=105} [2021-03-11 06:34:03,978 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 91 predicate places. [2021-03-11 06:34:03,978 INFO L480 AbstractCegarLoop]: Abstraction has has 146 places, 105 transitions, 1611 flow [2021-03-11 06:34:03,978 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 31.0) internal successors, (248), 8 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:34:03,979 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:34:03,979 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:34:03,979 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-03-11 06:34:03,979 INFO L428 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 06:34:03,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:34:03,979 INFO L82 PathProgramCache]: Analyzing trace with hash -422353662, now seen corresponding path program 55 times [2021-03-11 06:34:03,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:34:03,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559896365] [2021-03-11 06:34:03,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:34:03,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:34:03,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:34:03,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:34:03,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:34:03,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:34:03,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:34:03,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:34:04,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:34:04,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:34:04,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:34:04,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:34:04,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:34:04,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:34:04,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:34:04,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 06:34:04,008 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:34:04,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:34:04,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:34:04,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:34:04,013 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:34:04,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:34:04,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 06:34:04,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559896365] [2021-03-11 06:34:04,014 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:34:04,014 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 06:34:04,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352177269] [2021-03-11 06:34:04,014 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 06:34:04,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:34:04,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 06:34:04,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-03-11 06:34:04,015 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-03-11 06:34:04,015 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 105 transitions, 1611 flow. Second operand has 8 states, 8 states have (on average 31.0) internal successors, (248), 8 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:34:04,015 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:34:04,015 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-03-11 06:34:04,015 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:34:04,122 INFO L129 PetriNetUnfolder]: 58/293 cut-off events. [2021-03-11 06:34:04,122 INFO L130 PetriNetUnfolder]: For 4056/4095 co-relation queries the response was YES. [2021-03-11 06:34:04,123 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1906 conditions, 293 events. 58/293 cut-off events. For 4056/4095 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1457 event pairs, 2 based on Foata normal form. 14/305 useless extension candidates. Maximal degree in co-relation 1878. Up to 73 conditions per place. [2021-03-11 06:34:04,123 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 16 selfloop transitions, 42 changer transitions 32/114 dead transitions. [2021-03-11 06:34:04,123 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 114 transitions, 1867 flow [2021-03-11 06:34:04,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 06:34:04,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 06:34:04,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 316 transitions. [2021-03-11 06:34:04,124 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7632850241545893 [2021-03-11 06:34:04,124 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 316 transitions. [2021-03-11 06:34:04,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 316 transitions. [2021-03-11 06:34:04,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:34:04,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 316 transitions. [2021-03-11 06:34:04,124 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 35.111111111111114) internal successors, (316), 9 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:34:04,125 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 46.0) internal successors, (460), 10 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:34:04,125 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 46.0) internal successors, (460), 10 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:34:04,125 INFO L185 Difference]: Start difference. First operand has 146 places, 105 transitions, 1611 flow. Second operand 9 states and 316 transitions. [2021-03-11 06:34:04,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 114 transitions, 1867 flow [2021-03-11 06:34:04,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 114 transitions, 1584 flow, removed 34 selfloop flow, removed 23 redundant places. [2021-03-11 06:34:04,132 INFO L241 Difference]: Finished difference. Result has 125 places, 71 transitions, 861 flow [2021-03-11 06:34:04,132 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1314, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=861, PETRI_PLACES=125, PETRI_TRANSITIONS=71} [2021-03-11 06:34:04,133 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 70 predicate places. [2021-03-11 06:34:04,133 INFO L480 AbstractCegarLoop]: Abstraction has has 125 places, 71 transitions, 861 flow [2021-03-11 06:34:04,133 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 31.0) internal successors, (248), 8 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:34:04,133 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:34:04,133 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:34:04,133 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-03-11 06:34:04,133 INFO L428 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 06:34:04,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:34:04,134 INFO L82 PathProgramCache]: Analyzing trace with hash 2056419134, now seen corresponding path program 56 times [2021-03-11 06:34:04,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:34:04,134 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869037221] [2021-03-11 06:34:04,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:34:04,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:34:04,143 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:34:04,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:34:04,146 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:34:04,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:34:04,149 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:34:04,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 06:34:04,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:34:04,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:34:04,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:34:04,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:34:04,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:34:04,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:34:04,160 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:34:04,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:34:04,164 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:34:04,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:34:04,169 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:34:04,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 06:34:04,174 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:34:04,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:34:04,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 06:34:04,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869037221] [2021-03-11 06:34:04,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:34:04,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-11 06:34:04,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782821457] [2021-03-11 06:34:04,175 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-11 06:34:04,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:34:04,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-11 06:34:04,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-03-11 06:34:04,176 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-03-11 06:34:04,176 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 71 transitions, 861 flow. Second operand has 10 states, 10 states have (on average 30.6) internal successors, (306), 10 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:34:04,176 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:34:04,176 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-03-11 06:34:04,176 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:34:04,287 INFO L129 PetriNetUnfolder]: 31/144 cut-off events. [2021-03-11 06:34:04,287 INFO L130 PetriNetUnfolder]: For 1459/1461 co-relation queries the response was YES. [2021-03-11 06:34:04,287 INFO L84 FinitePrefix]: Finished finitePrefix Result has 930 conditions, 144 events. 31/144 cut-off events. For 1459/1461 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 596 event pairs, 0 based on Foata normal form. 5/149 useless extension candidates. Maximal degree in co-relation 908. Up to 28 conditions per place. [2021-03-11 06:34:04,288 INFO L132 encePairwiseOnDemand]: 36/46 looper letters, 0 selfloop transitions, 0 changer transitions 68/68 dead transitions. [2021-03-11 06:34:04,288 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 68 transitions, 965 flow [2021-03-11 06:34:04,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-03-11 06:34:04,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-03-11 06:34:04,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 398 transitions. [2021-03-11 06:34:04,288 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7210144927536232 [2021-03-11 06:34:04,288 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 398 transitions. [2021-03-11 06:34:04,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 398 transitions. [2021-03-11 06:34:04,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:34:04,289 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 398 transitions. [2021-03-11 06:34:04,289 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 33.166666666666664) internal successors, (398), 12 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:34:04,289 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 46.0) internal successors, (598), 13 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:34:04,289 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 46.0) internal successors, (598), 13 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:34:04,289 INFO L185 Difference]: Start difference. First operand has 125 places, 71 transitions, 861 flow. Second operand 12 states and 398 transitions. [2021-03-11 06:34:04,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 68 transitions, 965 flow [2021-03-11 06:34:04,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 68 transitions, 492 flow, removed 28 selfloop flow, removed 36 redundant places. [2021-03-11 06:34:04,298 INFO L241 Difference]: Finished difference. Result has 67 places, 0 transitions, 0 flow [2021-03-11 06:34:04,298 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=67, PETRI_TRANSITIONS=0} [2021-03-11 06:34:04,298 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 12 predicate places. [2021-03-11 06:34:04,298 INFO L480 AbstractCegarLoop]: Abstraction has has 67 places, 0 transitions, 0 flow [2021-03-11 06:34:04,298 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 30.6) internal successors, (306), 10 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:34:04,298 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-03-11 06:34:04,302 INFO L202 PluginConnector]: Adding new model ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 06:34:04 BasicIcfg [2021-03-11 06:34:04,302 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 06:34:04,303 INFO L168 Benchmark]: Toolchain (without parser) took 270239.58 ms. Allocated memory was 255.9 MB in the beginning and 15.4 GB in the end (delta: 15.1 GB). Free memory was 236.4 MB in the beginning and 12.2 GB in the end (delta: -12.0 GB). Peak memory consumption was 3.9 GB. Max. memory is 16.0 GB. [2021-03-11 06:34:04,303 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.10 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 06:34:04,303 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.80 ms. Allocated memory is still 255.9 MB. Free memory was 235.9 MB in the beginning and 234.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 06:34:04,303 INFO L168 Benchmark]: Boogie Preprocessor took 19.53 ms. Allocated memory is still 255.9 MB. Free memory was 234.5 MB in the beginning and 233.3 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 06:34:04,303 INFO L168 Benchmark]: RCFGBuilder took 290.17 ms. Allocated memory is still 255.9 MB. Free memory was 233.3 MB in the beginning and 233.9 MB in the end (delta: -576.6 kB). Peak memory consumption was 18.5 MB. Max. memory is 16.0 GB. [2021-03-11 06:34:04,303 INFO L168 Benchmark]: TraceAbstraction took 269897.29 ms. Allocated memory was 255.9 MB in the beginning and 15.4 GB in the end (delta: 15.1 GB). Free memory was 233.9 MB in the beginning and 12.2 GB in the end (delta: -12.0 GB). Peak memory consumption was 3.9 GB. Max. memory is 16.0 GB. [2021-03-11 06:34:04,304 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.10 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 25.80 ms. Allocated memory is still 255.9 MB. Free memory was 235.9 MB in the beginning and 234.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 19.53 ms. Allocated memory is still 255.9 MB. Free memory was 234.5 MB in the beginning and 233.3 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 290.17 ms. Allocated memory is still 255.9 MB. Free memory was 233.3 MB in the beginning and 233.9 MB in the end (delta: -576.6 kB). Peak memory consumption was 18.5 MB. Max. memory is 16.0 GB. * TraceAbstraction took 269897.29 ms. Allocated memory was 255.9 MB in the beginning and 15.4 GB in the end (delta: 15.1 GB). Free memory was 233.9 MB in the beginning and 12.2 GB in the end (delta: -12.0 GB). Peak memory consumption was 3.9 GB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 95]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 47 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 11.3ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 269719.9ms, OverallIterations: 56, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 266434.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 61.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 102 SDtfs, 1449 SDslu, 13 SDs, 0 SdLazy, 16177 SolverSat, 2427 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6374.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 699 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 547 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 767 ImplicationChecksByTransitivity, 2383.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=62340occurred in iteration=47, InterpolantAutomatonStates: 545, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 55.7ms SsaConstructionTime, 274.5ms SatisfiabilityAnalysisTime, 2594.4ms InterpolantComputationTime, 2184 NumberOfCodeBlocks, 2184 NumberOfCodeBlocksAsserted, 56 NumberOfCheckSat, 2128 ConstructedInterpolants, 0 QuantifiedInterpolants, 6046 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 56 InterpolantComputations, 56 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...