/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/bakery-3.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 06:12:43,515 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 06:12:43,516 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 06:12:43,541 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 06:12:43,542 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 06:12:43,542 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 06:12:43,548 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 06:12:43,553 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 06:12:43,554 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 06:12:43,557 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 06:12:43,558 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 06:12:43,559 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 06:12:43,559 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 06:12:43,561 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 06:12:43,562 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 06:12:43,563 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 06:12:43,563 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 06:12:43,564 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 06:12:43,567 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 06:12:43,573 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 06:12:43,574 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 06:12:43,575 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 06:12:43,576 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 06:12:43,578 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 06:12:43,583 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-11 06:12:43,589 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 06:12:43,590 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 06:12:43,590 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 06:12:43,591 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 06:12:43,623 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 06:12:43,623 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 06:12:43,625 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 06:12:43,625 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 06:12:43,626 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 06:12:43,626 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 06:12:43,626 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 06:12:43,626 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 06:12:43,626 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 06:12:43,626 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 06:12:43,627 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 06:12:43,627 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 06:12:43,627 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 06:12:43,627 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 06:12:43,627 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 06:12:43,627 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 06:12:43,627 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 06:12:43,627 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 06:12:43,628 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 06:12:43,628 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 06:12:43,628 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 06:12:43,628 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 06:12:43,628 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 06:12:43,628 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 06:12:43,628 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 06:12:43,628 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 06:12:43,628 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 06:12:43,629 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-03-11 06:12:43,629 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-11 06:12:43,629 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 06:12:43,865 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 06:12:43,878 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 06:12:43,880 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 06:12:43,881 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-11 06:12:43,881 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-11 06:12:43,882 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bakery-3.wvr.bpl [2021-03-11 06:12:43,893 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bakery-3.wvr.bpl' [2021-03-11 06:12:43,927 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 06:12:43,931 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-11 06:12:43,932 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 06:12:43,933 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 06:12:43,933 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 06:12:43,942 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 06:12:43" (1/1) ... [2021-03-11 06:12:43,947 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 06:12:43" (1/1) ... [2021-03-11 06:12:43,952 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 06:12:43,953 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 06:12:43,953 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 06:12:43,953 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 06:12:43,958 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 06:12:43" (1/1) ... [2021-03-11 06:12:43,959 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 06:12:43" (1/1) ... [2021-03-11 06:12:43,960 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 06:12:43" (1/1) ... [2021-03-11 06:12:43,960 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 06:12:43" (1/1) ... [2021-03-11 06:12:43,962 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 06:12:43" (1/1) ... [2021-03-11 06:12:43,962 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 06:12:43" (1/1) ... [2021-03-11 06:12:43,963 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 06:12:43" (1/1) ... [2021-03-11 06:12:43,964 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 06:12:43,964 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 06:12:43,964 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 06:12:43,964 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 06:12:43,965 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 06:12:43" (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 06:12:44,010 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-03-11 06:12:44,011 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-11 06:12:44,012 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-11 06:12:44,012 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-03-11 06:12:44,012 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-11 06:12:44,013 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-11 06:12:44,013 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-11 06:12:44,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 06:12:44,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 06:12:44,013 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-03-11 06:12:44,013 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-03-11 06:12:44,013 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-03-11 06:12:44,014 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 06:12:44,166 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 06:12:44,167 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-11 06:12:44,168 INFO L202 PluginConnector]: Adding new model bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 06:12:44 BoogieIcfgContainer [2021-03-11 06:12:44,168 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 06:12:44,169 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 06:12:44,169 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 06:12:44,170 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 06:12:44,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 06:12:43" (1/2) ... [2021-03-11 06:12:44,171 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e918322 and model type bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 06:12:44, skipping insertion in model container [2021-03-11 06:12:44,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 06:12:44" (2/2) ... [2021-03-11 06:12:44,172 INFO L111 eAbstractionObserver]: Analyzing ICFG bakery-3.wvr.bpl [2021-03-11 06:12:44,175 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 06:12:44,177 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 06:12:44,178 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 06:12:44,229 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-03-11 06:12:44,242 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-11 06:12:44,269 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 06:12:44,269 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-11 06:12:44,270 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 06:12:44,270 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 06:12:44,270 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 06:12:44,270 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 06:12:44,270 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 06:12:44,270 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 06:12:44,280 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 63 places, 53 transitions, 130 flow [2021-03-11 06:12:44,310 INFO L129 PetriNetUnfolder]: 0/50 cut-off events. [2021-03-11 06:12:44,310 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-11 06:12:44,313 INFO L84 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 50 events. 0/50 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 79 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-11 06:12:44,313 INFO L82 GeneralOperation]: Start removeDead. Operand has 63 places, 53 transitions, 130 flow [2021-03-11 06:12:44,317 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 48 transitions, 114 flow [2021-03-11 06:12:44,329 INFO L129 PetriNetUnfolder]: 0/47 cut-off events. [2021-03-11 06:12:44,330 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-11 06:12:44,330 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:12:44,330 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:12:44,330 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 06:12:44,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:12:44,334 INFO L82 PathProgramCache]: Analyzing trace with hash 2013229232, now seen corresponding path program 1 times [2021-03-11 06:12:44,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:12:44,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009718925] [2021-03-11 06:12:44,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:12:44,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:12:44,510 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:44,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:12:44,529 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:44,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:12:44,542 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:44,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:12:44,553 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:44,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:12:44,561 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:44,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:12:44,570 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:44,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:12:44,585 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-11 06:12:44,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:12:44,599 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:44,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:12:44,602 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 06:12:44,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009718925] [2021-03-11 06:12:44,603 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:12:44,604 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 06:12:44,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977879219] [2021-03-11 06:12:44,610 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 06:12:44,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:12:44,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 06:12:44,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-11 06:12:44,626 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 53 [2021-03-11 06:12:44,630 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 48 transitions, 114 flow. Second operand has 9 states, 9 states have (on average 44.888888888888886) internal successors, (404), 9 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:12:44,630 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:12:44,630 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 53 [2021-03-11 06:12:44,631 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:12:44,935 INFO L129 PetriNetUnfolder]: 29/215 cut-off events. [2021-03-11 06:12:44,935 INFO L130 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2021-03-11 06:12:44,938 INFO L84 FinitePrefix]: Finished finitePrefix Result has 334 conditions, 215 events. 29/215 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1169 event pairs, 3 based on Foata normal form. 1/215 useless extension candidates. Maximal degree in co-relation 291. Up to 28 conditions per place. [2021-03-11 06:12:44,940 INFO L132 encePairwiseOnDemand]: 45/53 looper letters, 21 selfloop transitions, 15 changer transitions 2/78 dead transitions. [2021-03-11 06:12:44,941 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 78 transitions, 250 flow [2021-03-11 06:12:44,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-11 06:12:44,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-11 06:12:44,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 523 transitions. [2021-03-11 06:12:44,954 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8970840480274442 [2021-03-11 06:12:44,955 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 523 transitions. [2021-03-11 06:12:44,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 523 transitions. [2021-03-11 06:12:44,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:12:44,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 523 transitions. [2021-03-11 06:12:44,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 47.54545454545455) internal successors, (523), 11 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:12:44,973 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 53.0) internal successors, (636), 12 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:12:44,973 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 53.0) internal successors, (636), 12 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:12:44,974 INFO L185 Difference]: Start difference. First operand has 58 places, 48 transitions, 114 flow. Second operand 11 states and 523 transitions. [2021-03-11 06:12:44,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 78 transitions, 250 flow [2021-03-11 06:12:44,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 78 transitions, 238 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-03-11 06:12:44,984 INFO L241 Difference]: Finished difference. Result has 66 places, 64 transitions, 194 flow [2021-03-11 06:12:44,985 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=194, PETRI_PLACES=66, PETRI_TRANSITIONS=64} [2021-03-11 06:12:44,985 INFO L335 CegarLoopForPetriNet]: 58 programPoint places, 8 predicate places. [2021-03-11 06:12:44,985 INFO L480 AbstractCegarLoop]: Abstraction has has 66 places, 64 transitions, 194 flow [2021-03-11 06:12:44,986 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 44.888888888888886) internal successors, (404), 9 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:12:44,986 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:12:44,986 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:12:44,986 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 06:12:44,986 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 06:12:44,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:12:44,987 INFO L82 PathProgramCache]: Analyzing trace with hash -99645260, now seen corresponding path program 2 times [2021-03-11 06:12:44,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:12:44,987 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985872932] [2021-03-11 06:12:44,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:12:45,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:12:45,085 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:45,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:12:45,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:45,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:12:45,094 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:45,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:12:45,098 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:45,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-11 06:12:45,107 INFO L142 QuantifierPusher]: treesize reduction 7, result has 63.2 percent of original size [2021-03-11 06:12:45,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-11 06:12:45,120 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:45,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:12:45,132 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:45,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 06:12:45,140 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:45,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:12:45,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 06:12:45,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985872932] [2021-03-11 06:12:45,142 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:12:45,142 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 06:12:45,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303000883] [2021-03-11 06:12:45,143 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 06:12:45,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:12:45,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 06:12:45,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-11 06:12:45,147 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-03-11 06:12:45,148 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 64 transitions, 194 flow. Second operand has 7 states, 7 states have (on average 35.714285714285715) internal successors, (250), 7 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:12:45,148 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:12:45,148 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-03-11 06:12:45,148 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:12:45,465 INFO L129 PetriNetUnfolder]: 1085/2823 cut-off events. [2021-03-11 06:12:45,465 INFO L130 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2021-03-11 06:12:45,470 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5099 conditions, 2823 events. 1085/2823 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 22758 event pairs, 270 based on Foata normal form. 21/2740 useless extension candidates. Maximal degree in co-relation 5077. Up to 1157 conditions per place. [2021-03-11 06:12:45,482 INFO L132 encePairwiseOnDemand]: 43/53 looper letters, 59 selfloop transitions, 22 changer transitions 0/126 dead transitions. [2021-03-11 06:12:45,482 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 126 transitions, 480 flow [2021-03-11 06:12:45,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 06:12:45,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-11 06:12:45,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 346 transitions. [2021-03-11 06:12:45,483 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8160377358490566 [2021-03-11 06:12:45,483 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 346 transitions. [2021-03-11 06:12:45,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 346 transitions. [2021-03-11 06:12:45,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:12:45,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 346 transitions. [2021-03-11 06:12:45,484 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 43.25) internal successors, (346), 8 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:12:45,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 53.0) internal successors, (477), 9 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:12:45,485 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 53.0) internal successors, (477), 9 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:12:45,485 INFO L185 Difference]: Start difference. First operand has 66 places, 64 transitions, 194 flow. Second operand 8 states and 346 transitions. [2021-03-11 06:12:45,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 126 transitions, 480 flow [2021-03-11 06:12:45,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 126 transitions, 478 flow, removed 1 selfloop flow, removed 1 redundant places. [2021-03-11 06:12:45,506 INFO L241 Difference]: Finished difference. Result has 75 places, 86 transitions, 334 flow [2021-03-11 06:12:45,506 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=334, PETRI_PLACES=75, PETRI_TRANSITIONS=86} [2021-03-11 06:12:45,506 INFO L335 CegarLoopForPetriNet]: 58 programPoint places, 17 predicate places. [2021-03-11 06:12:45,506 INFO L480 AbstractCegarLoop]: Abstraction has has 75 places, 86 transitions, 334 flow [2021-03-11 06:12:45,507 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 35.714285714285715) internal successors, (250), 7 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:12:45,507 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:12:45,507 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:12:45,507 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 06:12:45,507 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 06:12:45,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:12:45,507 INFO L82 PathProgramCache]: Analyzing trace with hash -1878523510, now seen corresponding path program 3 times [2021-03-11 06:12:45,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:12:45,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046889279] [2021-03-11 06:12:45,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:12:45,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:12:45,520 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:45,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:12:45,521 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:45,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:12:45,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:45,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:12:45,524 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 06:12:45,524 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046889279] [2021-03-11 06:12:45,524 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:12:45,524 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 06:12:45,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62870374] [2021-03-11 06:12:45,525 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 06:12:45,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:12:45,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 06:12:45,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 06:12:45,525 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 53 [2021-03-11 06:12:45,525 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 86 transitions, 334 flow. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:12:45,526 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:12:45,526 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 53 [2021-03-11 06:12:45,526 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:12:45,561 INFO L129 PetriNetUnfolder]: 88/612 cut-off events. [2021-03-11 06:12:45,561 INFO L130 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2021-03-11 06:12:45,562 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1082 conditions, 612 events. 88/612 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 4479 event pairs, 21 based on Foata normal form. 19/619 useless extension candidates. Maximal degree in co-relation 1013. Up to 76 conditions per place. [2021-03-11 06:12:45,564 INFO L132 encePairwiseOnDemand]: 49/53 looper letters, 3 selfloop transitions, 2 changer transitions 0/86 dead transitions. [2021-03-11 06:12:45,564 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 86 transitions, 344 flow [2021-03-11 06:12:45,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 06:12:45,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 06:12:45,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 148 transitions. [2021-03-11 06:12:45,565 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9308176100628931 [2021-03-11 06:12:45,565 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 148 transitions. [2021-03-11 06:12:45,565 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 148 transitions. [2021-03-11 06:12:45,565 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:12:45,565 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 148 transitions. [2021-03-11 06:12:45,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:12:45,566 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:12:45,566 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:12:45,566 INFO L185 Difference]: Start difference. First operand has 75 places, 86 transitions, 334 flow. Second operand 3 states and 148 transitions. [2021-03-11 06:12:45,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 86 transitions, 344 flow [2021-03-11 06:12:45,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 86 transitions, 344 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-11 06:12:45,569 INFO L241 Difference]: Finished difference. Result has 78 places, 86 transitions, 344 flow [2021-03-11 06:12:45,569 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=344, PETRI_PLACES=78, PETRI_TRANSITIONS=86} [2021-03-11 06:12:45,569 INFO L335 CegarLoopForPetriNet]: 58 programPoint places, 20 predicate places. [2021-03-11 06:12:45,569 INFO L480 AbstractCegarLoop]: Abstraction has has 78 places, 86 transitions, 344 flow [2021-03-11 06:12:45,570 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:12:45,570 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:12:45,570 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:12:45,570 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 06:12:45,570 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 06:12:45,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:12:45,570 INFO L82 PathProgramCache]: Analyzing trace with hash 157509754, now seen corresponding path program 4 times [2021-03-11 06:12:45,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:12:45,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963556737] [2021-03-11 06:12:45,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:12:45,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:12:45,580 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:45,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:12:45,580 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:45,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:12:45,583 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:45,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:12:45,583 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 06:12:45,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963556737] [2021-03-11 06:12:45,583 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:12:45,583 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 06:12:45,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282654009] [2021-03-11 06:12:45,584 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 06:12:45,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:12:45,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 06:12:45,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 06:12:45,584 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 53 [2021-03-11 06:12:45,585 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 86 transitions, 344 flow. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:12:45,585 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:12:45,585 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 53 [2021-03-11 06:12:45,585 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:12:45,648 INFO L129 PetriNetUnfolder]: 117/743 cut-off events. [2021-03-11 06:12:45,648 INFO L130 PetriNetUnfolder]: For 64/64 co-relation queries the response was YES. [2021-03-11 06:12:45,651 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1349 conditions, 743 events. 117/743 cut-off events. For 64/64 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 5715 event pairs, 39 based on Foata normal form. 16/737 useless extension candidates. Maximal degree in co-relation 1272. Up to 81 conditions per place. [2021-03-11 06:12:45,652 INFO L132 encePairwiseOnDemand]: 49/53 looper letters, 3 selfloop transitions, 2 changer transitions 0/86 dead transitions. [2021-03-11 06:12:45,653 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 86 transitions, 354 flow [2021-03-11 06:12:45,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 06:12:45,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 06:12:45,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 148 transitions. [2021-03-11 06:12:45,653 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9308176100628931 [2021-03-11 06:12:45,654 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 148 transitions. [2021-03-11 06:12:45,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 148 transitions. [2021-03-11 06:12:45,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:12:45,654 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 148 transitions. [2021-03-11 06:12:45,654 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:12:45,655 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:12:45,655 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:12:45,655 INFO L185 Difference]: Start difference. First operand has 78 places, 86 transitions, 344 flow. Second operand 3 states and 148 transitions. [2021-03-11 06:12:45,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 86 transitions, 354 flow [2021-03-11 06:12:45,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 86 transitions, 350 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-11 06:12:45,671 INFO L241 Difference]: Finished difference. Result has 79 places, 86 transitions, 350 flow [2021-03-11 06:12:45,671 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=350, PETRI_PLACES=79, PETRI_TRANSITIONS=86} [2021-03-11 06:12:45,672 INFO L335 CegarLoopForPetriNet]: 58 programPoint places, 21 predicate places. [2021-03-11 06:12:45,672 INFO L480 AbstractCegarLoop]: Abstraction has has 79 places, 86 transitions, 350 flow [2021-03-11 06:12:45,674 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:12:45,674 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:12:45,674 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:12:45,675 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 06:12:45,677 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 06:12:45,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:12:45,678 INFO L82 PathProgramCache]: Analyzing trace with hash -1887522296, now seen corresponding path program 5 times [2021-03-11 06:12:45,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:12:45,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139832527] [2021-03-11 06:12:45,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:12:45,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:12:45,715 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:45,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:12:45,721 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:45,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:12:45,728 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:45,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:12:45,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:45,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:12:45,742 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:45,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:12:45,750 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:45,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:12:45,764 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-11 06:12:45,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:12:45,773 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:45,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:12:45,775 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 06:12:45,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139832527] [2021-03-11 06:12:45,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:12:45,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 06:12:45,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589618988] [2021-03-11 06:12:45,775 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 06:12:45,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:12:45,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 06:12:45,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-11 06:12:45,777 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 53 [2021-03-11 06:12:45,778 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 86 transitions, 350 flow. Second operand has 9 states, 9 states have (on average 44.888888888888886) internal successors, (404), 9 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:12:45,778 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:12:45,778 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 53 [2021-03-11 06:12:45,778 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:12:46,000 INFO L129 PetriNetUnfolder]: 173/1053 cut-off events. [2021-03-11 06:12:46,001 INFO L130 PetriNetUnfolder]: For 192/205 co-relation queries the response was YES. [2021-03-11 06:12:46,004 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2141 conditions, 1053 events. 173/1053 cut-off events. For 192/205 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 8767 event pairs, 57 based on Foata normal form. 11/1039 useless extension candidates. Maximal degree in co-relation 1991. Up to 121 conditions per place. [2021-03-11 06:12:46,006 INFO L132 encePairwiseOnDemand]: 45/53 looper letters, 30 selfloop transitions, 22 changer transitions 2/116 dead transitions. [2021-03-11 06:12:46,006 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 116 transitions, 577 flow [2021-03-11 06:12:46,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-11 06:12:46,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-11 06:12:46,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 523 transitions. [2021-03-11 06:12:46,007 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8970840480274442 [2021-03-11 06:12:46,007 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 523 transitions. [2021-03-11 06:12:46,007 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 523 transitions. [2021-03-11 06:12:46,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:12:46,008 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 523 transitions. [2021-03-11 06:12:46,008 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 47.54545454545455) internal successors, (523), 11 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:12:46,009 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 53.0) internal successors, (636), 12 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:12:46,010 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 53.0) internal successors, (636), 12 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:12:46,010 INFO L185 Difference]: Start difference. First operand has 79 places, 86 transitions, 350 flow. Second operand 11 states and 523 transitions. [2021-03-11 06:12:46,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 116 transitions, 577 flow [2021-03-11 06:12:46,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 116 transitions, 573 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-11 06:12:46,013 INFO L241 Difference]: Finished difference. Result has 92 places, 101 transitions, 502 flow [2021-03-11 06:12:46,014 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=502, PETRI_PLACES=92, PETRI_TRANSITIONS=101} [2021-03-11 06:12:46,014 INFO L335 CegarLoopForPetriNet]: 58 programPoint places, 34 predicate places. [2021-03-11 06:12:46,014 INFO L480 AbstractCegarLoop]: Abstraction has has 92 places, 101 transitions, 502 flow [2021-03-11 06:12:46,014 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 44.888888888888886) internal successors, (404), 9 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:12:46,014 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:12:46,014 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:12:46,014 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-11 06:12:46,015 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 06:12:46,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:12:46,015 INFO L82 PathProgramCache]: Analyzing trace with hash -822706686, now seen corresponding path program 6 times [2021-03-11 06:12:46,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:12:46,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441938334] [2021-03-11 06:12:46,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:12:46,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:12:46,080 INFO L142 QuantifierPusher]: treesize reduction 21, result has 54.3 percent of original size [2021-03-11 06:12:46,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-11 06:12:46,093 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:46,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:12:46,098 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:46,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 06:12:46,101 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:46,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 06:12:46,106 INFO L142 QuantifierPusher]: treesize reduction 22, result has 37.1 percent of original size [2021-03-11 06:12:46,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 06:12:46,114 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-11 06:12:46,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:12:46,121 INFO L142 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size [2021-03-11 06:12:46,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-11 06:12:46,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:46,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:12:46,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 06:12:46,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441938334] [2021-03-11 06:12:46,132 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:12:46,132 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 06:12:46,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239544582] [2021-03-11 06:12:46,133 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 06:12:46,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:12:46,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 06:12:46,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 06:12:46,134 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-03-11 06:12:46,134 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 101 transitions, 502 flow. Second operand has 9 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 06:12:46,134 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:12:46,134 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-03-11 06:12:46,134 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:12:46,514 INFO L129 PetriNetUnfolder]: 1824/4799 cut-off events. [2021-03-11 06:12:46,514 INFO L130 PetriNetUnfolder]: For 2209/2328 co-relation queries the response was YES. [2021-03-11 06:12:46,529 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11740 conditions, 4799 events. 1824/4799 cut-off events. For 2209/2328 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 42831 event pairs, 494 based on Foata normal form. 46/4665 useless extension candidates. Maximal degree in co-relation 11684. Up to 1263 conditions per place. [2021-03-11 06:12:46,545 INFO L132 encePairwiseOnDemand]: 44/53 looper letters, 87 selfloop transitions, 24 changer transitions 0/171 dead transitions. [2021-03-11 06:12:46,545 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 171 transitions, 969 flow [2021-03-11 06:12:46,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 06:12:46,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-11 06:12:46,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 338 transitions. [2021-03-11 06:12:46,546 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7971698113207547 [2021-03-11 06:12:46,546 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 338 transitions. [2021-03-11 06:12:46,546 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 338 transitions. [2021-03-11 06:12:46,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:12:46,547 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 338 transitions. [2021-03-11 06:12:46,547 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 42.25) internal successors, (338), 8 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:12:46,548 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 53.0) internal successors, (477), 9 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:12:46,548 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 53.0) internal successors, (477), 9 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:12:46,548 INFO L185 Difference]: Start difference. First operand has 92 places, 101 transitions, 502 flow. Second operand 8 states and 338 transitions. [2021-03-11 06:12:46,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 171 transitions, 969 flow [2021-03-11 06:12:46,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 171 transitions, 955 flow, removed 7 selfloop flow, removed 1 redundant places. [2021-03-11 06:12:46,565 INFO L241 Difference]: Finished difference. Result has 101 places, 116 transitions, 649 flow [2021-03-11 06:12:46,566 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=488, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=649, PETRI_PLACES=101, PETRI_TRANSITIONS=116} [2021-03-11 06:12:46,566 INFO L335 CegarLoopForPetriNet]: 58 programPoint places, 43 predicate places. [2021-03-11 06:12:46,567 INFO L480 AbstractCegarLoop]: Abstraction has has 101 places, 116 transitions, 649 flow [2021-03-11 06:12:46,568 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 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 06:12:46,568 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:12:46,568 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:12:46,568 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-11 06:12:46,568 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 06:12:46,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:12:46,569 INFO L82 PathProgramCache]: Analyzing trace with hash -563361684, now seen corresponding path program 7 times [2021-03-11 06:12:46,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:12:46,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088795717] [2021-03-11 06:12:46,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:12:46,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:12:46,586 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:46,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:12:46,587 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:46,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:12:46,589 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:46,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:12:46,590 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 06:12:46,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088795717] [2021-03-11 06:12:46,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:12:46,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 06:12:46,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207988218] [2021-03-11 06:12:46,590 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 06:12:46,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:12:46,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 06:12:46,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 06:12:46,591 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 53 [2021-03-11 06:12:46,591 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 116 transitions, 649 flow. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:12:46,591 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:12:46,591 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 53 [2021-03-11 06:12:46,591 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:12:46,701 INFO L129 PetriNetUnfolder]: 331/1764 cut-off events. [2021-03-11 06:12:46,701 INFO L130 PetriNetUnfolder]: For 789/837 co-relation queries the response was YES. [2021-03-11 06:12:46,709 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4210 conditions, 1764 events. 331/1764 cut-off events. For 789/837 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 16408 event pairs, 69 based on Foata normal form. 42/1750 useless extension candidates. Maximal degree in co-relation 4044. Up to 210 conditions per place. [2021-03-11 06:12:46,714 INFO L132 encePairwiseOnDemand]: 49/53 looper letters, 3 selfloop transitions, 2 changer transitions 0/116 dead transitions. [2021-03-11 06:12:46,714 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 116 transitions, 659 flow [2021-03-11 06:12:46,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 06:12:46,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 06:12:46,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 148 transitions. [2021-03-11 06:12:46,715 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9308176100628931 [2021-03-11 06:12:46,715 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 148 transitions. [2021-03-11 06:12:46,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 148 transitions. [2021-03-11 06:12:46,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:12:46,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 148 transitions. [2021-03-11 06:12:46,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:12:46,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:12:46,717 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:12:46,717 INFO L185 Difference]: Start difference. First operand has 101 places, 116 transitions, 649 flow. Second operand 3 states and 148 transitions. [2021-03-11 06:12:46,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 116 transitions, 659 flow [2021-03-11 06:12:46,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 116 transitions, 658 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 06:12:46,728 INFO L241 Difference]: Finished difference. Result has 103 places, 116 transitions, 658 flow [2021-03-11 06:12:46,728 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=648, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=658, PETRI_PLACES=103, PETRI_TRANSITIONS=116} [2021-03-11 06:12:46,728 INFO L335 CegarLoopForPetriNet]: 58 programPoint places, 45 predicate places. [2021-03-11 06:12:46,728 INFO L480 AbstractCegarLoop]: Abstraction has has 103 places, 116 transitions, 658 flow [2021-03-11 06:12:46,728 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:12:46,728 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:12:46,728 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:12:46,728 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-11 06:12:46,728 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 06:12:46,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:12:46,729 INFO L82 PathProgramCache]: Analyzing trace with hash 233591496, now seen corresponding path program 8 times [2021-03-11 06:12:46,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:12:46,730 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057122528] [2021-03-11 06:12:46,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:12:46,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:12:46,785 INFO L142 QuantifierPusher]: treesize reduction 21, result has 54.3 percent of original size [2021-03-11 06:12:46,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-11 06:12:46,799 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:46,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:12:46,804 INFO L142 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-03-11 06:12:46,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:12:46,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:46,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:12:46,810 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:46,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:12:46,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:46,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:12:46,819 INFO L142 QuantifierPusher]: treesize reduction 22, result has 37.1 percent of original size [2021-03-11 06:12:46,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 06:12:46,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:46,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:12:46,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:46,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:12:46,839 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:46,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:12:46,839 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 06:12:46,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057122528] [2021-03-11 06:12:46,840 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:12:46,840 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 06:12:46,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883753474] [2021-03-11 06:12:46,840 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 06:12:46,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:12:46,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 06:12:46,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-03-11 06:12:46,841 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-03-11 06:12:46,841 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 116 transitions, 658 flow. Second operand has 8 states, 8 states have (on average 35.375) internal successors, (283), 8 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:12:46,841 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:12:46,841 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-03-11 06:12:46,841 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:12:47,417 INFO L129 PetriNetUnfolder]: 2580/6624 cut-off events. [2021-03-11 06:12:47,417 INFO L130 PetriNetUnfolder]: For 5652/5802 co-relation queries the response was YES. [2021-03-11 06:12:47,447 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19125 conditions, 6624 events. 2580/6624 cut-off events. For 5652/5802 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 61958 event pairs, 766 based on Foata normal form. 64/6356 useless extension candidates. Maximal degree in co-relation 18854. Up to 2760 conditions per place. [2021-03-11 06:12:47,475 INFO L132 encePairwiseOnDemand]: 38/53 looper letters, 101 selfloop transitions, 37 changer transitions 0/198 dead transitions. [2021-03-11 06:12:47,475 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 198 transitions, 1262 flow [2021-03-11 06:12:47,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-11 06:12:47,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-11 06:12:47,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 433 transitions. [2021-03-11 06:12:47,477 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8169811320754717 [2021-03-11 06:12:47,477 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 433 transitions. [2021-03-11 06:12:47,477 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 433 transitions. [2021-03-11 06:12:47,477 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:12:47,477 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 433 transitions. [2021-03-11 06:12:47,478 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 43.3) internal successors, (433), 10 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:12:47,479 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 53.0) internal successors, (583), 11 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:12:47,479 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 53.0) internal successors, (583), 11 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:12:47,479 INFO L185 Difference]: Start difference. First operand has 103 places, 116 transitions, 658 flow. Second operand 10 states and 433 transitions. [2021-03-11 06:12:47,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 198 transitions, 1262 flow [2021-03-11 06:12:47,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 198 transitions, 1258 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-11 06:12:47,520 INFO L241 Difference]: Finished difference. Result has 117 places, 144 transitions, 960 flow [2021-03-11 06:12:47,520 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=654, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=960, PETRI_PLACES=117, PETRI_TRANSITIONS=144} [2021-03-11 06:12:47,520 INFO L335 CegarLoopForPetriNet]: 58 programPoint places, 59 predicate places. [2021-03-11 06:12:47,520 INFO L480 AbstractCegarLoop]: Abstraction has has 117 places, 144 transitions, 960 flow [2021-03-11 06:12:47,520 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 35.375) internal successors, (283), 8 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:12:47,520 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:12:47,520 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:12:47,521 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-11 06:12:47,521 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 06:12:47,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:12:47,521 INFO L82 PathProgramCache]: Analyzing trace with hash 1694215192, now seen corresponding path program 9 times [2021-03-11 06:12:47,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:12:47,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287603790] [2021-03-11 06:12:47,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:12:47,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:12:47,548 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:47,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:12:47,556 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:47,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:12:47,561 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:47,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:12:47,566 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:47,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:12:47,572 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:47,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:12:47,579 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:47,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:12:47,591 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-11 06:12:47,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:12:47,599 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:47,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:12:47,600 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 06:12:47,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287603790] [2021-03-11 06:12:47,600 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:12:47,601 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 06:12:47,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920972137] [2021-03-11 06:12:47,601 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 06:12:47,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:12:47,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 06:12:47,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-11 06:12:47,603 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 53 [2021-03-11 06:12:47,603 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 144 transitions, 960 flow. Second operand has 9 states, 9 states have (on average 44.888888888888886) internal successors, (404), 9 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:12:47,603 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:12:47,603 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 53 [2021-03-11 06:12:47,603 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:12:48,047 INFO L129 PetriNetUnfolder]: 970/3917 cut-off events. [2021-03-11 06:12:48,048 INFO L130 PetriNetUnfolder]: For 4672/4857 co-relation queries the response was YES. [2021-03-11 06:12:48,069 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12295 conditions, 3917 events. 970/3917 cut-off events. For 4672/4857 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 40589 event pairs, 199 based on Foata normal form. 63/3819 useless extension candidates. Maximal degree in co-relation 11956. Up to 453 conditions per place. [2021-03-11 06:12:48,079 INFO L132 encePairwiseOnDemand]: 45/53 looper letters, 32 selfloop transitions, 31 changer transitions 0/168 dead transitions. [2021-03-11 06:12:48,079 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 168 transitions, 1214 flow [2021-03-11 06:12:48,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-11 06:12:48,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-11 06:12:48,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 523 transitions. [2021-03-11 06:12:48,081 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8970840480274442 [2021-03-11 06:12:48,081 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 523 transitions. [2021-03-11 06:12:48,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 523 transitions. [2021-03-11 06:12:48,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:12:48,081 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 523 transitions. [2021-03-11 06:12:48,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 47.54545454545455) internal successors, (523), 11 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:12:48,082 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 53.0) internal successors, (636), 12 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:12:48,083 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 53.0) internal successors, (636), 12 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:12:48,083 INFO L185 Difference]: Start difference. First operand has 117 places, 144 transitions, 960 flow. Second operand 11 states and 523 transitions. [2021-03-11 06:12:48,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 168 transitions, 1214 flow [2021-03-11 06:12:48,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 168 transitions, 1188 flow, removed 10 selfloop flow, removed 1 redundant places. [2021-03-11 06:12:48,114 INFO L241 Difference]: Finished difference. Result has 131 places, 156 transitions, 1115 flow [2021-03-11 06:12:48,115 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=934, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1115, PETRI_PLACES=131, PETRI_TRANSITIONS=156} [2021-03-11 06:12:48,115 INFO L335 CegarLoopForPetriNet]: 58 programPoint places, 73 predicate places. [2021-03-11 06:12:48,115 INFO L480 AbstractCegarLoop]: Abstraction has has 131 places, 156 transitions, 1115 flow [2021-03-11 06:12:48,115 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 44.888888888888886) internal successors, (404), 9 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:12:48,115 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:12:48,115 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:12:48,115 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-11 06:12:48,115 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 06:12:48,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:12:48,116 INFO L82 PathProgramCache]: Analyzing trace with hash -302080194, now seen corresponding path program 10 times [2021-03-11 06:12:48,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:12:48,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696468396] [2021-03-11 06:12:48,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:12:48,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:12:48,148 INFO L142 QuantifierPusher]: treesize reduction 20, result has 56.5 percent of original size [2021-03-11 06:12:48,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-11 06:12:48,163 INFO L142 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size [2021-03-11 06:12:48,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:12:48,168 INFO L142 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size [2021-03-11 06:12:48,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:12:48,174 INFO L142 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size [2021-03-11 06:12:48,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-11 06:12:48,181 INFO L142 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size [2021-03-11 06:12:48,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-11 06:12:48,184 INFO L142 QuantifierPusher]: treesize reduction 5, result has 64.3 percent of original size [2021-03-11 06:12:48,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 06:12:48,196 INFO L142 QuantifierPusher]: treesize reduction 15, result has 46.4 percent of original size [2021-03-11 06:12:48,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 06:12:48,204 INFO L142 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size [2021-03-11 06:12:48,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:12:48,205 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:48,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:12:48,205 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 06:12:48,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696468396] [2021-03-11 06:12:48,205 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:12:48,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 06:12:48,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344748504] [2021-03-11 06:12:48,206 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 06:12:48,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:12:48,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 06:12:48,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-03-11 06:12:48,206 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-03-11 06:12:48,208 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 156 transitions, 1115 flow. Second operand has 8 states, 8 states have (on average 35.375) internal successors, (283), 8 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:12:48,208 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:12:48,208 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-03-11 06:12:48,208 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:12:48,921 INFO L129 PetriNetUnfolder]: 2996/8047 cut-off events. [2021-03-11 06:12:48,921 INFO L130 PetriNetUnfolder]: For 17458/17820 co-relation queries the response was YES. [2021-03-11 06:12:48,969 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28943 conditions, 8047 events. 2996/8047 cut-off events. For 17458/17820 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 79810 event pairs, 1178 based on Foata normal form. 67/7677 useless extension candidates. Maximal degree in co-relation 28725. Up to 4245 conditions per place. [2021-03-11 06:12:48,999 INFO L132 encePairwiseOnDemand]: 42/53 looper letters, 122 selfloop transitions, 29 changer transitions 0/223 dead transitions. [2021-03-11 06:12:49,000 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 223 transitions, 1861 flow [2021-03-11 06:12:49,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 06:12:49,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 06:12:49,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 296 transitions. [2021-03-11 06:12:49,001 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7978436657681941 [2021-03-11 06:12:49,001 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 296 transitions. [2021-03-11 06:12:49,001 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 296 transitions. [2021-03-11 06:12:49,001 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:12:49,001 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 296 transitions. [2021-03-11 06:12:49,002 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 42.285714285714285) internal successors, (296), 7 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:12:49,002 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:12:49,002 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:12:49,003 INFO L185 Difference]: Start difference. First operand has 131 places, 156 transitions, 1115 flow. Second operand 7 states and 296 transitions. [2021-03-11 06:12:49,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 223 transitions, 1861 flow [2021-03-11 06:12:49,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 223 transitions, 1832 flow, removed 7 selfloop flow, removed 3 redundant places. [2021-03-11 06:12:49,112 INFO L241 Difference]: Finished difference. Result has 136 places, 173 transitions, 1296 flow [2021-03-11 06:12:49,112 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1086, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1296, PETRI_PLACES=136, PETRI_TRANSITIONS=173} [2021-03-11 06:12:49,112 INFO L335 CegarLoopForPetriNet]: 58 programPoint places, 78 predicate places. [2021-03-11 06:12:49,112 INFO L480 AbstractCegarLoop]: Abstraction has has 136 places, 173 transitions, 1296 flow [2021-03-11 06:12:49,112 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 35.375) internal successors, (283), 8 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:12:49,112 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:12:49,112 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:12:49,113 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-11 06:12:49,113 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 06:12:49,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:12:49,114 INFO L82 PathProgramCache]: Analyzing trace with hash 1194314402, now seen corresponding path program 11 times [2021-03-11 06:12:49,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:12:49,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631861911] [2021-03-11 06:12:49,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:12:49,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:12:49,132 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:49,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-11 06:12:49,143 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:49,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 06:12:49,161 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:49,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:12:49,169 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:49,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:12:49,178 INFO L142 QuantifierPusher]: treesize reduction 7, result has 68.2 percent of original size [2021-03-11 06:12:49,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 06:12:49,190 INFO L142 QuantifierPusher]: treesize reduction 7, result has 68.2 percent of original size [2021-03-11 06:12:49,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 06:12:49,197 INFO L142 QuantifierPusher]: treesize reduction 7, result has 68.2 percent of original size [2021-03-11 06:12:49,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 06:12:49,211 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:49,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-11 06:12:49,228 INFO L142 QuantifierPusher]: treesize reduction 9, result has 69.0 percent of original size [2021-03-11 06:12:49,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-11 06:12:49,252 INFO L142 QuantifierPusher]: treesize reduction 36, result has 18.2 percent of original size [2021-03-11 06:12:49,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-03-11 06:12:49,263 INFO L142 QuantifierPusher]: treesize reduction 37, result has 24.5 percent of original size [2021-03-11 06:12:49,264 INFO L147 QuantifierPusher]: treesize reduction 4, result has 66.7 percent of original size 8 [2021-03-11 06:12:49,281 INFO L142 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size [2021-03-11 06:12:49,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:12:49,282 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:49,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:12:49,283 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 06:12:49,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631861911] [2021-03-11 06:12:49,283 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:12:49,283 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-03-11 06:12:49,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965638724] [2021-03-11 06:12:49,284 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-11 06:12:49,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:12:49,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-11 06:12:49,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-03-11 06:12:49,284 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-03-11 06:12:49,285 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 173 transitions, 1296 flow. Second operand has 12 states, 12 states have (on average 34.583333333333336) internal successors, (415), 12 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:12:49,285 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:12:49,285 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-03-11 06:12:49,285 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:12:51,183 INFO L129 PetriNetUnfolder]: 4489/12046 cut-off events. [2021-03-11 06:12:51,183 INFO L130 PetriNetUnfolder]: For 31072/31689 co-relation queries the response was YES. [2021-03-11 06:12:51,305 INFO L84 FinitePrefix]: Finished finitePrefix Result has 45597 conditions, 12046 events. 4489/12046 cut-off events. For 31072/31689 co-relation queries the response was YES. Maximal size of possible extension queue 499. Compared 127493 event pairs, 422 based on Foata normal form. 272/11919 useless extension candidates. Maximal degree in co-relation 45184. Up to 1580 conditions per place. [2021-03-11 06:12:51,364 INFO L132 encePairwiseOnDemand]: 36/53 looper letters, 271 selfloop transitions, 208 changer transitions 0/551 dead transitions. [2021-03-11 06:12:51,364 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 551 transitions, 4970 flow [2021-03-11 06:12:51,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-03-11 06:12:51,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-03-11 06:12:51,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 936 transitions. [2021-03-11 06:12:51,367 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8409703504043127 [2021-03-11 06:12:51,367 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 936 transitions. [2021-03-11 06:12:51,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 936 transitions. [2021-03-11 06:12:51,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:12:51,367 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 936 transitions. [2021-03-11 06:12:51,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 44.57142857142857) internal successors, (936), 21 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:12:51,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 53.0) internal successors, (1166), 22 states have internal predecessors, (1166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:12:51,371 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 53.0) internal successors, (1166), 22 states have internal predecessors, (1166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:12:51,371 INFO L185 Difference]: Start difference. First operand has 136 places, 173 transitions, 1296 flow. Second operand 21 states and 936 transitions. [2021-03-11 06:12:51,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 551 transitions, 4970 flow [2021-03-11 06:12:51,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 551 transitions, 4941 flow, removed 6 selfloop flow, removed 3 redundant places. [2021-03-11 06:12:51,547 INFO L241 Difference]: Finished difference. Result has 169 places, 355 transitions, 3693 flow [2021-03-11 06:12:51,547 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1271, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=3693, PETRI_PLACES=169, PETRI_TRANSITIONS=355} [2021-03-11 06:12:51,548 INFO L335 CegarLoopForPetriNet]: 58 programPoint places, 111 predicate places. [2021-03-11 06:12:51,548 INFO L480 AbstractCegarLoop]: Abstraction has has 169 places, 355 transitions, 3693 flow [2021-03-11 06:12:51,548 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 34.583333333333336) internal successors, (415), 12 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:12:51,548 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:12:51,548 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:12:51,548 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-11 06:12:51,548 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 06:12:51,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:12:51,548 INFO L82 PathProgramCache]: Analyzing trace with hash 1294125284, now seen corresponding path program 12 times [2021-03-11 06:12:51,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:12:51,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665923668] [2021-03-11 06:12:51,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:12:51,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:12:51,585 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:51,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:12:51,590 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:51,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:12:51,596 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:51,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:12:51,601 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:51,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:12:51,607 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:51,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:12:51,617 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:51,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:12:51,625 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-11 06:12:51,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:12:51,632 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:51,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:12:51,633 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 06:12:51,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665923668] [2021-03-11 06:12:51,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:12:51,633 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 06:12:51,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937309604] [2021-03-11 06:12:51,634 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 06:12:51,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:12:51,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 06:12:51,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-11 06:12:51,635 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 53 [2021-03-11 06:12:51,635 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 355 transitions, 3693 flow. Second operand has 9 states, 9 states have (on average 44.888888888888886) internal successors, (404), 9 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:12:51,635 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:12:51,635 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 53 [2021-03-11 06:12:51,635 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:12:53,183 INFO L129 PetriNetUnfolder]: 3472/10804 cut-off events. [2021-03-11 06:12:53,183 INFO L130 PetriNetUnfolder]: For 49495/50476 co-relation queries the response was YES. [2021-03-11 06:12:53,244 INFO L84 FinitePrefix]: Finished finitePrefix Result has 48613 conditions, 10804 events. 3472/10804 cut-off events. For 49495/50476 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 121886 event pairs, 496 based on Foata normal form. 375/10731 useless extension candidates. Maximal degree in co-relation 48022. Up to 1371 conditions per place. [2021-03-11 06:12:53,287 INFO L132 encePairwiseOnDemand]: 45/53 looper letters, 40 selfloop transitions, 31 changer transitions 4/375 dead transitions. [2021-03-11 06:12:53,287 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 375 transitions, 3960 flow [2021-03-11 06:12:53,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-11 06:12:53,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-11 06:12:53,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 523 transitions. [2021-03-11 06:12:53,289 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8970840480274442 [2021-03-11 06:12:53,289 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 523 transitions. [2021-03-11 06:12:53,289 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 523 transitions. [2021-03-11 06:12:53,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:12:53,289 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 523 transitions. [2021-03-11 06:12:53,290 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 47.54545454545455) internal successors, (523), 11 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:12:53,290 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 53.0) internal successors, (636), 12 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:12:53,291 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 53.0) internal successors, (636), 12 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:12:53,291 INFO L185 Difference]: Start difference. First operand has 169 places, 355 transitions, 3693 flow. Second operand 11 states and 523 transitions. [2021-03-11 06:12:53,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 375 transitions, 3960 flow [2021-03-11 06:12:53,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 375 transitions, 3721 flow, removed 117 selfloop flow, removed 2 redundant places. [2021-03-11 06:12:53,646 INFO L241 Difference]: Finished difference. Result has 182 places, 362 transitions, 3587 flow [2021-03-11 06:12:53,647 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=3454, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3587, PETRI_PLACES=182, PETRI_TRANSITIONS=362} [2021-03-11 06:12:53,647 INFO L335 CegarLoopForPetriNet]: 58 programPoint places, 124 predicate places. [2021-03-11 06:12:53,647 INFO L480 AbstractCegarLoop]: Abstraction has has 182 places, 362 transitions, 3587 flow [2021-03-11 06:12:53,650 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 44.888888888888886) internal successors, (404), 9 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:12:53,650 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:12:53,650 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:12:53,651 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-11 06:12:53,651 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 06:12:53,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:12:53,651 INFO L82 PathProgramCache]: Analyzing trace with hash 6967100, now seen corresponding path program 13 times [2021-03-11 06:12:53,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:12:53,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140907003] [2021-03-11 06:12:53,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:12:53,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:12:53,678 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:53,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-11 06:12:53,690 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:53,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 06:12:53,692 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:53,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:12:53,698 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:53,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 06:12:53,702 INFO L142 QuantifierPusher]: treesize reduction 23, result has 52.1 percent of original size [2021-03-11 06:12:53,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-11 06:12:53,706 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-11 06:12:53,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-11 06:12:53,715 INFO L142 QuantifierPusher]: treesize reduction 13, result has 48.0 percent of original size [2021-03-11 06:12:53,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-11 06:12:53,722 INFO L142 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size [2021-03-11 06:12:53,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:12:53,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:53,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:12:53,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 06:12:53,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140907003] [2021-03-11 06:12:53,724 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:12:53,724 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-11 06:12:53,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131730762] [2021-03-11 06:12:53,724 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 06:12:53,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:12:53,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 06:12:53,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-03-11 06:12:53,725 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-03-11 06:12:53,725 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 362 transitions, 3587 flow. Second operand has 6 states, 6 states have (on average 36.166666666666664) internal successors, (217), 6 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:12:53,725 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:12:53,725 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-03-11 06:12:53,725 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:12:55,297 INFO L129 PetriNetUnfolder]: 4381/11851 cut-off events. [2021-03-11 06:12:55,297 INFO L130 PetriNetUnfolder]: For 75391/76758 co-relation queries the response was YES. [2021-03-11 06:12:55,371 INFO L84 FinitePrefix]: Finished finitePrefix Result has 58386 conditions, 11851 events. 4381/11851 cut-off events. For 75391/76758 co-relation queries the response was YES. Maximal size of possible extension queue 513. Compared 124968 event pairs, 983 based on Foata normal form. 213/11640 useless extension candidates. Maximal degree in co-relation 57893. Up to 6169 conditions per place. [2021-03-11 06:12:55,413 INFO L132 encePairwiseOnDemand]: 41/53 looper letters, 298 selfloop transitions, 64 changer transitions 7/452 dead transitions. [2021-03-11 06:12:55,413 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 452 transitions, 5264 flow [2021-03-11 06:12:55,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 06:12:55,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 06:12:55,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 299 transitions. [2021-03-11 06:12:55,414 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8059299191374663 [2021-03-11 06:12:55,414 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 299 transitions. [2021-03-11 06:12:55,414 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 299 transitions. [2021-03-11 06:12:55,414 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:12:55,415 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 299 transitions. [2021-03-11 06:12:55,415 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 42.714285714285715) internal successors, (299), 7 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:12:55,416 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:12:55,416 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:12:55,416 INFO L185 Difference]: Start difference. First operand has 182 places, 362 transitions, 3587 flow. Second operand 7 states and 299 transitions. [2021-03-11 06:12:55,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 452 transitions, 5264 flow [2021-03-11 06:12:55,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 452 transitions, 5229 flow, removed 10 selfloop flow, removed 3 redundant places. [2021-03-11 06:12:55,822 INFO L241 Difference]: Finished difference. Result has 188 places, 385 transitions, 4066 flow [2021-03-11 06:12:55,822 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=3408, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4066, PETRI_PLACES=188, PETRI_TRANSITIONS=385} [2021-03-11 06:12:55,822 INFO L335 CegarLoopForPetriNet]: 58 programPoint places, 130 predicate places. [2021-03-11 06:12:55,822 INFO L480 AbstractCegarLoop]: Abstraction has has 188 places, 385 transitions, 4066 flow [2021-03-11 06:12:55,823 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 36.166666666666664) internal successors, (217), 6 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:12:55,823 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:12:55,823 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:12:55,823 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-03-11 06:12:55,823 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 06:12:55,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:12:55,823 INFO L82 PathProgramCache]: Analyzing trace with hash -584011144, now seen corresponding path program 14 times [2021-03-11 06:12:55,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:12:55,823 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639776072] [2021-03-11 06:12:55,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:12:55,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:12:55,840 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:55,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 06:12:55,848 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:55,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 06:12:55,859 INFO L142 QuantifierPusher]: treesize reduction 17, result has 63.0 percent of original size [2021-03-11 06:12:55,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 06:12:55,864 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:55,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 06:12:55,867 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:55,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-11 06:12:55,870 INFO L142 QuantifierPusher]: treesize reduction 7, result has 65.0 percent of original size [2021-03-11 06:12:55,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 06:12:55,874 INFO L142 QuantifierPusher]: treesize reduction 7, result has 70.8 percent of original size [2021-03-11 06:12:55,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 06:12:55,888 INFO L142 QuantifierPusher]: treesize reduction 7, result has 68.2 percent of original size [2021-03-11 06:12:55,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 06:12:55,900 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:55,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:12:55,907 INFO L142 QuantifierPusher]: treesize reduction 9, result has 55.0 percent of original size [2021-03-11 06:12:55,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-11 06:12:55,914 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:55,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:12:55,915 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 06:12:55,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639776072] [2021-03-11 06:12:55,915 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:12:55,915 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 06:12:55,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383887324] [2021-03-11 06:12:55,915 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 06:12:55,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:12:55,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 06:12:55,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-03-11 06:12:55,916 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-03-11 06:12:55,916 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 385 transitions, 4066 flow. Second operand has 8 states, 8 states have (on average 35.375) internal successors, (283), 8 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:12:55,916 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:12:55,916 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-03-11 06:12:55,916 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:12:57,578 INFO L129 PetriNetUnfolder]: 4169/11368 cut-off events. [2021-03-11 06:12:57,578 INFO L130 PetriNetUnfolder]: For 79049/80652 co-relation queries the response was YES. [2021-03-11 06:12:57,650 INFO L84 FinitePrefix]: Finished finitePrefix Result has 56905 conditions, 11368 events. 4169/11368 cut-off events. For 79049/80652 co-relation queries the response was YES. Maximal size of possible extension queue 542. Compared 119663 event pairs, 1016 based on Foata normal form. 248/11181 useless extension candidates. Maximal degree in co-relation 56457. Up to 5846 conditions per place. [2021-03-11 06:12:57,686 INFO L132 encePairwiseOnDemand]: 38/53 looper letters, 342 selfloop transitions, 70 changer transitions 21/516 dead transitions. [2021-03-11 06:12:57,686 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 516 transitions, 6258 flow [2021-03-11 06:12:57,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-03-11 06:12:57,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-03-11 06:12:57,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 501 transitions. [2021-03-11 06:12:57,688 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7877358490566038 [2021-03-11 06:12:57,688 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 501 transitions. [2021-03-11 06:12:57,688 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 501 transitions. [2021-03-11 06:12:57,689 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:12:57,689 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 501 transitions. [2021-03-11 06:12:57,689 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 41.75) internal successors, (501), 12 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:12:57,690 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 53.0) internal successors, (689), 13 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:12:57,690 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 53.0) internal successors, (689), 13 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:12:57,690 INFO L185 Difference]: Start difference. First operand has 188 places, 385 transitions, 4066 flow. Second operand 12 states and 501 transitions. [2021-03-11 06:12:57,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 516 transitions, 6258 flow [2021-03-11 06:12:58,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 516 transitions, 6212 flow, removed 17 selfloop flow, removed 2 redundant places. [2021-03-11 06:12:58,016 INFO L241 Difference]: Finished difference. Result has 205 places, 426 transitions, 4786 flow [2021-03-11 06:12:58,016 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=3964, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4786, PETRI_PLACES=205, PETRI_TRANSITIONS=426} [2021-03-11 06:12:58,016 INFO L335 CegarLoopForPetriNet]: 58 programPoint places, 147 predicate places. [2021-03-11 06:12:58,016 INFO L480 AbstractCegarLoop]: Abstraction has has 205 places, 426 transitions, 4786 flow [2021-03-11 06:12:58,017 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 35.375) internal successors, (283), 8 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:12:58,017 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:12:58,017 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:12:58,017 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-03-11 06:12:58,017 INFO L428 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 06:12:58,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:12:58,017 INFO L82 PathProgramCache]: Analyzing trace with hash 1153496930, now seen corresponding path program 15 times [2021-03-11 06:12:58,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:12:58,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485979632] [2021-03-11 06:12:58,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:12:58,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:12:58,031 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:58,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:12:58,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:58,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 06:12:58,038 INFO L142 QuantifierPusher]: treesize reduction 4, result has 73.3 percent of original size [2021-03-11 06:12:58,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-11 06:12:58,048 INFO L142 QuantifierPusher]: treesize reduction 23, result has 39.5 percent of original size [2021-03-11 06:12:58,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 06:12:58,058 INFO L142 QuantifierPusher]: treesize reduction 4, result has 69.2 percent of original size [2021-03-11 06:12:58,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 06:12:58,065 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-11 06:12:58,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 06:12:58,073 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:58,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:12:58,074 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 06:12:58,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485979632] [2021-03-11 06:12:58,074 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:12:58,074 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 06:12:58,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559186409] [2021-03-11 06:12:58,074 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 06:12:58,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:12:58,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 06:12:58,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 06:12:58,075 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-03-11 06:12:58,075 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 426 transitions, 4786 flow. Second operand has 8 states, 8 states have (on average 35.375) internal successors, (283), 8 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:12:58,075 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:12:58,075 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-03-11 06:12:58,075 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:13:00,450 INFO L129 PetriNetUnfolder]: 5186/14364 cut-off events. [2021-03-11 06:13:00,450 INFO L130 PetriNetUnfolder]: For 118874/120810 co-relation queries the response was YES. [2021-03-11 06:13:00,550 INFO L84 FinitePrefix]: Finished finitePrefix Result has 74418 conditions, 14364 events. 5186/14364 cut-off events. For 118874/120810 co-relation queries the response was YES. Maximal size of possible extension queue 672. Compared 158530 event pairs, 805 based on Foata normal form. 661/14530 useless extension candidates. Maximal degree in co-relation 73795. Up to 2460 conditions per place. [2021-03-11 06:13:00,601 INFO L132 encePairwiseOnDemand]: 38/53 looper letters, 320 selfloop transitions, 311 changer transitions 2/716 dead transitions. [2021-03-11 06:13:00,601 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 716 transitions, 9398 flow [2021-03-11 06:13:00,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-11 06:13:00,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-11 06:13:00,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 451 transitions. [2021-03-11 06:13:00,603 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8509433962264151 [2021-03-11 06:13:00,603 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 451 transitions. [2021-03-11 06:13:00,603 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 451 transitions. [2021-03-11 06:13:00,603 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:13:00,603 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 451 transitions. [2021-03-11 06:13:00,604 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 45.1) internal successors, (451), 10 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:13:00,604 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 53.0) internal successors, (583), 11 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:13:00,604 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 53.0) internal successors, (583), 11 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:13:00,604 INFO L185 Difference]: Start difference. First operand has 205 places, 426 transitions, 4786 flow. Second operand 10 states and 451 transitions. [2021-03-11 06:13:00,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 716 transitions, 9398 flow [2021-03-11 06:13:01,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 716 transitions, 9165 flow, removed 110 selfloop flow, removed 3 redundant places. [2021-03-11 06:13:01,181 INFO L241 Difference]: Finished difference. Result has 218 places, 556 transitions, 7520 flow [2021-03-11 06:13:01,182 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=4544, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=191, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7520, PETRI_PLACES=218, PETRI_TRANSITIONS=556} [2021-03-11 06:13:01,182 INFO L335 CegarLoopForPetriNet]: 58 programPoint places, 160 predicate places. [2021-03-11 06:13:01,182 INFO L480 AbstractCegarLoop]: Abstraction has has 218 places, 556 transitions, 7520 flow [2021-03-11 06:13:01,182 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 35.375) internal successors, (283), 8 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:13:01,182 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:13:01,182 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:13:01,182 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-03-11 06:13:01,182 INFO L428 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 06:13:01,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:13:01,183 INFO L82 PathProgramCache]: Analyzing trace with hash 806246878, now seen corresponding path program 16 times [2021-03-11 06:13:01,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:13:01,183 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953216274] [2021-03-11 06:13:01,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:13:01,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:13:01,195 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:13:01,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:13:01,199 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:13:01,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:13:01,204 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:13:01,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:13:01,210 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:13:01,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:13:01,216 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:13:01,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:13:01,223 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:13:01,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:13:01,232 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-11 06:13:01,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:13:01,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:13:01,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:13:01,241 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 06:13:01,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953216274] [2021-03-11 06:13:01,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:13:01,241 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 06:13:01,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851994325] [2021-03-11 06:13:01,241 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 06:13:01,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:13:01,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 06:13:01,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-11 06:13:01,242 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 53 [2021-03-11 06:13:01,242 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 556 transitions, 7520 flow. Second operand has 9 states, 9 states have (on average 44.888888888888886) internal successors, (404), 9 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:13:01,242 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:13:01,243 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 53 [2021-03-11 06:13:01,243 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:13:03,558 INFO L129 PetriNetUnfolder]: 3758/12321 cut-off events. [2021-03-11 06:13:03,558 INFO L130 PetriNetUnfolder]: For 112418/114530 co-relation queries the response was YES. [2021-03-11 06:13:03,659 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66006 conditions, 12321 events. 3758/12321 cut-off events. For 112418/114530 co-relation queries the response was YES. Maximal size of possible extension queue 565. Compared 144284 event pairs, 602 based on Foata normal form. 624/12350 useless extension candidates. Maximal degree in co-relation 65208. Up to 1510 conditions per place. [2021-03-11 06:13:03,696 INFO L132 encePairwiseOnDemand]: 45/53 looper letters, 50 selfloop transitions, 39 changer transitions 1/583 dead transitions. [2021-03-11 06:13:03,696 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 583 transitions, 7918 flow [2021-03-11 06:13:03,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-11 06:13:03,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-11 06:13:03,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 523 transitions. [2021-03-11 06:13:03,698 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8970840480274442 [2021-03-11 06:13:03,698 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 523 transitions. [2021-03-11 06:13:03,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 523 transitions. [2021-03-11 06:13:03,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:13:03,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 523 transitions. [2021-03-11 06:13:03,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 47.54545454545455) internal successors, (523), 11 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:13:03,699 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 53.0) internal successors, (636), 12 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:13:03,699 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 53.0) internal successors, (636), 12 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:13:03,699 INFO L185 Difference]: Start difference. First operand has 218 places, 556 transitions, 7520 flow. Second operand 11 states and 523 transitions. [2021-03-11 06:13:03,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 583 transitions, 7918 flow [2021-03-11 06:13:04,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 583 transitions, 7831 flow, removed 43 selfloop flow, removed 1 redundant places. [2021-03-11 06:13:04,305 INFO L241 Difference]: Finished difference. Result has 230 places, 569 transitions, 7656 flow [2021-03-11 06:13:04,305 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=7433, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=556, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=527, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7656, PETRI_PLACES=230, PETRI_TRANSITIONS=569} [2021-03-11 06:13:04,306 INFO L335 CegarLoopForPetriNet]: 58 programPoint places, 172 predicate places. [2021-03-11 06:13:04,306 INFO L480 AbstractCegarLoop]: Abstraction has has 230 places, 569 transitions, 7656 flow [2021-03-11 06:13:04,306 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 44.888888888888886) internal successors, (404), 9 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:13:04,306 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:13:04,306 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:13:04,306 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-03-11 06:13:04,306 INFO L428 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 06:13:04,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:13:04,306 INFO L82 PathProgramCache]: Analyzing trace with hash -2046836352, now seen corresponding path program 17 times [2021-03-11 06:13:04,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:13:04,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814986773] [2021-03-11 06:13:04,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:13:04,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:13:04,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:13:04,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-11 06:13:04,334 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:13:04,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 06:13:04,343 INFO L142 QuantifierPusher]: treesize reduction 15, result has 70.6 percent of original size [2021-03-11 06:13:04,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-11 06:13:04,361 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:13:04,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-11 06:13:04,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:13:04,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 06:13:04,396 INFO L142 QuantifierPusher]: treesize reduction 5, result has 79.2 percent of original size [2021-03-11 06:13:04,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 06:13:04,409 INFO L142 QuantifierPusher]: treesize reduction 11, result has 52.2 percent of original size [2021-03-11 06:13:04,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-11 06:13:04,418 INFO L142 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size [2021-03-11 06:13:04,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:13:04,419 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:13:04,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:13:04,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 06:13:04,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814986773] [2021-03-11 06:13:04,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:13:04,419 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 06:13:04,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493210940] [2021-03-11 06:13:04,420 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 06:13:04,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:13:04,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 06:13:04,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-03-11 06:13:04,420 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-03-11 06:13:04,420 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 569 transitions, 7656 flow. Second operand has 9 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 06:13:04,421 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:13:04,421 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-03-11 06:13:04,421 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:13:07,249 INFO L129 PetriNetUnfolder]: 5231/15167 cut-off events. [2021-03-11 06:13:07,250 INFO L130 PetriNetUnfolder]: For 179833/182835 co-relation queries the response was YES. [2021-03-11 06:13:07,399 INFO L84 FinitePrefix]: Finished finitePrefix Result has 89126 conditions, 15167 events. 5231/15167 cut-off events. For 179833/182835 co-relation queries the response was YES. Maximal size of possible extension queue 684. Compared 173187 event pairs, 1359 based on Foata normal form. 545/15187 useless extension candidates. Maximal degree in co-relation 88304. Up to 7670 conditions per place. [2021-03-11 06:13:07,447 INFO L132 encePairwiseOnDemand]: 40/53 looper letters, 483 selfloop transitions, 92 changer transitions 5/677 dead transitions. [2021-03-11 06:13:07,447 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 677 transitions, 10299 flow [2021-03-11 06:13:07,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-11 06:13:07,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-11 06:13:07,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 412 transitions. [2021-03-11 06:13:07,448 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7773584905660378 [2021-03-11 06:13:07,448 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 412 transitions. [2021-03-11 06:13:07,448 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 412 transitions. [2021-03-11 06:13:07,448 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:13:07,448 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 412 transitions. [2021-03-11 06:13:07,449 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 41.2) internal successors, (412), 10 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:13:07,449 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 53.0) internal successors, (583), 11 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:13:07,449 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 53.0) internal successors, (583), 11 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:13:07,449 INFO L185 Difference]: Start difference. First operand has 230 places, 569 transitions, 7656 flow. Second operand 10 states and 412 transitions. [2021-03-11 06:13:07,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 677 transitions, 10299 flow [2021-03-11 06:13:08,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 677 transitions, 10159 flow, removed 36 selfloop flow, removed 9 redundant places. [2021-03-11 06:13:08,454 INFO L241 Difference]: Finished difference. Result has 236 places, 606 transitions, 8434 flow [2021-03-11 06:13:08,454 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=7332, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=558, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=470, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8434, PETRI_PLACES=236, PETRI_TRANSITIONS=606} [2021-03-11 06:13:08,455 INFO L335 CegarLoopForPetriNet]: 58 programPoint places, 178 predicate places. [2021-03-11 06:13:08,455 INFO L480 AbstractCegarLoop]: Abstraction has has 236 places, 606 transitions, 8434 flow [2021-03-11 06:13:08,455 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 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 06:13:08,455 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:13:08,455 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:13:08,455 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-03-11 06:13:08,455 INFO L428 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 06:13:08,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:13:08,455 INFO L82 PathProgramCache]: Analyzing trace with hash -725551576, now seen corresponding path program 18 times [2021-03-11 06:13:08,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:13:08,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132535117] [2021-03-11 06:13:08,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:13:08,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:13:08,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:13:08,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 06:13:08,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:13:08,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:13:08,486 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:13:08,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:13:08,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:13:08,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:13:08,491 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:13:08,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:13:08,496 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:13:08,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:13:08,497 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:13:08,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:13:08,502 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:13:08,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:13:08,509 INFO L142 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size [2021-03-11 06:13:08,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:13:08,516 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:13:08,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:13:08,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 06:13:08,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132535117] [2021-03-11 06:13:08,517 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:13:08,517 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 06:13:08,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36390284] [2021-03-11 06:13:08,517 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 06:13:08,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:13:08,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 06:13:08,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-03-11 06:13:08,518 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-03-11 06:13:08,518 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 606 transitions, 8434 flow. Second operand has 9 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 06:13:08,518 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:13:08,518 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-03-11 06:13:08,518 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:13:11,909 INFO L129 PetriNetUnfolder]: 5707/17864 cut-off events. [2021-03-11 06:13:11,910 INFO L130 PetriNetUnfolder]: For 226075/229057 co-relation queries the response was YES. [2021-03-11 06:13:12,056 INFO L84 FinitePrefix]: Finished finitePrefix Result has 104342 conditions, 17864 events. 5707/17864 cut-off events. For 226075/229057 co-relation queries the response was YES. Maximal size of possible extension queue 806. Compared 216538 event pairs, 694 based on Foata normal form. 1352/18692 useless extension candidates. Maximal degree in co-relation 103229. Up to 2650 conditions per place. [2021-03-11 06:13:12,112 INFO L132 encePairwiseOnDemand]: 40/53 looper letters, 492 selfloop transitions, 376 changer transitions 14/979 dead transitions. [2021-03-11 06:13:12,113 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 979 transitions, 15653 flow [2021-03-11 06:13:12,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-03-11 06:13:12,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-03-11 06:13:12,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 518 transitions. [2021-03-11 06:13:12,114 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8144654088050315 [2021-03-11 06:13:12,114 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 518 transitions. [2021-03-11 06:13:12,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 518 transitions. [2021-03-11 06:13:12,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:13:12,114 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 518 transitions. [2021-03-11 06:13:12,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 43.166666666666664) internal successors, (518), 12 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:13:12,115 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 53.0) internal successors, (689), 13 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:13:12,116 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 53.0) internal successors, (689), 13 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:13:12,116 INFO L185 Difference]: Start difference. First operand has 236 places, 606 transitions, 8434 flow. Second operand 12 states and 518 transitions. [2021-03-11 06:13:12,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 979 transitions, 15653 flow [2021-03-11 06:13:13,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 979 transitions, 15475 flow, removed 79 selfloop flow, removed 2 redundant places. [2021-03-11 06:13:13,451 INFO L241 Difference]: Finished difference. Result has 255 places, 773 transitions, 12457 flow [2021-03-11 06:13:13,451 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=8161, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=598, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=208, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=12457, PETRI_PLACES=255, PETRI_TRANSITIONS=773} [2021-03-11 06:13:13,451 INFO L335 CegarLoopForPetriNet]: 58 programPoint places, 197 predicate places. [2021-03-11 06:13:13,451 INFO L480 AbstractCegarLoop]: Abstraction has has 255 places, 773 transitions, 12457 flow [2021-03-11 06:13:13,451 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 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 06:13:13,451 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:13:13,451 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:13:13,451 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-03-11 06:13:13,451 INFO L428 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 06:13:13,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:13:13,452 INFO L82 PathProgramCache]: Analyzing trace with hash 897093404, now seen corresponding path program 19 times [2021-03-11 06:13:13,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:13:13,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486222988] [2021-03-11 06:13:13,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:13:13,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:13:13,472 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:13:13,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:13:13,475 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:13:13,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:13:13,480 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:13:13,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:13:13,485 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:13:13,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:13:13,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:13:13,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:13:13,496 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:13:13,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:13:13,505 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-11 06:13:13,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:13:13,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:13:13,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:13:13,512 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 06:13:13,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486222988] [2021-03-11 06:13:13,513 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:13:13,513 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 06:13:13,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045315075] [2021-03-11 06:13:13,513 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 06:13:13,514 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:13:13,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 06:13:13,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-11 06:13:13,514 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 53 [2021-03-11 06:13:13,514 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 773 transitions, 12457 flow. Second operand has 9 states, 9 states have (on average 44.888888888888886) internal successors, (404), 9 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:13:13,514 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:13:13,514 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 53 [2021-03-11 06:13:13,514 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:13:16,843 INFO L129 PetriNetUnfolder]: 4290/15148 cut-off events. [2021-03-11 06:13:16,843 INFO L130 PetriNetUnfolder]: For 206273/208796 co-relation queries the response was YES. [2021-03-11 06:13:16,992 INFO L84 FinitePrefix]: Finished finitePrefix Result has 89991 conditions, 15148 events. 4290/15148 cut-off events. For 206273/208796 co-relation queries the response was YES. Maximal size of possible extension queue 747. Compared 189161 event pairs, 750 based on Foata normal form. 1008/15425 useless extension candidates. Maximal degree in co-relation 88735. Up to 1713 conditions per place. [2021-03-11 06:13:17,042 INFO L132 encePairwiseOnDemand]: 45/53 looper letters, 50 selfloop transitions, 41 changer transitions 30/788 dead transitions. [2021-03-11 06:13:17,042 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 788 transitions, 12754 flow [2021-03-11 06:13:17,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-11 06:13:17,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-11 06:13:17,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 523 transitions. [2021-03-11 06:13:17,043 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8970840480274442 [2021-03-11 06:13:17,043 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 523 transitions. [2021-03-11 06:13:17,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 523 transitions. [2021-03-11 06:13:17,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:13:17,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 523 transitions. [2021-03-11 06:13:17,044 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 47.54545454545455) internal successors, (523), 11 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:13:17,045 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 53.0) internal successors, (636), 12 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:13:17,045 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 53.0) internal successors, (636), 12 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:13:17,045 INFO L185 Difference]: Start difference. First operand has 255 places, 773 transitions, 12457 flow. Second operand 11 states and 523 transitions. [2021-03-11 06:13:17,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 788 transitions, 12754 flow [2021-03-11 06:13:18,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 788 transitions, 12531 flow, removed 111 selfloop flow, removed 1 redundant places. [2021-03-11 06:13:18,380 INFO L241 Difference]: Finished difference. Result has 264 places, 745 transitions, 11777 flow [2021-03-11 06:13:18,380 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=12234, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=773, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=734, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11777, PETRI_PLACES=264, PETRI_TRANSITIONS=745} [2021-03-11 06:13:18,380 INFO L335 CegarLoopForPetriNet]: 58 programPoint places, 206 predicate places. [2021-03-11 06:13:18,380 INFO L480 AbstractCegarLoop]: Abstraction has has 264 places, 745 transitions, 11777 flow [2021-03-11 06:13:18,380 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 44.888888888888886) internal successors, (404), 9 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:13:18,381 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:13:18,381 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:13:18,381 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-03-11 06:13:18,381 INFO L428 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 06:13:18,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:13:18,381 INFO L82 PathProgramCache]: Analyzing trace with hash 258723094, now seen corresponding path program 20 times [2021-03-11 06:13:18,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:13:18,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921545170] [2021-03-11 06:13:18,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:13:18,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:13:18,396 INFO L142 QuantifierPusher]: treesize reduction 26, result has 52.7 percent of original size [2021-03-11 06:13:18,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 06:13:18,408 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:13:18,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 06:13:18,417 INFO L142 QuantifierPusher]: treesize reduction 66, result has 28.3 percent of original size [2021-03-11 06:13:18,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-11 06:13:18,420 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:13:18,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 06:13:18,425 INFO L142 QuantifierPusher]: treesize reduction 13, result has 63.9 percent of original size [2021-03-11 06:13:18,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 06:13:18,436 INFO L142 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-03-11 06:13:18,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:13:18,442 INFO L142 QuantifierPusher]: treesize reduction 16, result has 40.7 percent of original size [2021-03-11 06:13:18,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-11 06:13:18,450 INFO L142 QuantifierPusher]: treesize reduction 13, result has 7.1 percent of original size [2021-03-11 06:13:18,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:13:18,451 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:13:18,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:13:18,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 06:13:18,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921545170] [2021-03-11 06:13:18,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:13:18,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 06:13:18,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274330282] [2021-03-11 06:13:18,452 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 06:13:18,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:13:18,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 06:13:18,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-03-11 06:13:18,452 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-03-11 06:13:18,452 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 745 transitions, 11777 flow. Second operand has 8 states, 8 states have (on average 35.375) internal successors, (283), 8 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:13:18,452 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:13:18,453 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-03-11 06:13:18,453 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:13:22,423 INFO L129 PetriNetUnfolder]: 6048/18586 cut-off events. [2021-03-11 06:13:22,423 INFO L130 PetriNetUnfolder]: For 299698/303912 co-relation queries the response was YES. [2021-03-11 06:13:22,595 INFO L84 FinitePrefix]: Finished finitePrefix Result has 118930 conditions, 18586 events. 6048/18586 cut-off events. For 299698/303912 co-relation queries the response was YES. Maximal size of possible extension queue 877. Compared 225576 event pairs, 1432 based on Foata normal form. 775/18742 useless extension candidates. Maximal degree in co-relation 117677. Up to 7635 conditions per place. [2021-03-11 06:13:22,658 INFO L132 encePairwiseOnDemand]: 41/53 looper letters, 725 selfloop transitions, 129 changer transitions 1/954 dead transitions. [2021-03-11 06:13:22,658 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 954 transitions, 16890 flow [2021-03-11 06:13:22,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 06:13:22,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-11 06:13:22,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 341 transitions. [2021-03-11 06:13:22,660 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8042452830188679 [2021-03-11 06:13:22,660 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 341 transitions. [2021-03-11 06:13:22,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 341 transitions. [2021-03-11 06:13:22,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:13:22,660 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 341 transitions. [2021-03-11 06:13:22,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 42.625) internal successors, (341), 8 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:13:22,661 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 53.0) internal successors, (477), 9 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:13:22,661 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 53.0) internal successors, (477), 9 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:13:22,661 INFO L185 Difference]: Start difference. First operand has 264 places, 745 transitions, 11777 flow. Second operand 8 states and 341 transitions. [2021-03-11 06:13:22,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 954 transitions, 16890 flow [2021-03-11 06:13:24,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 954 transitions, 16651 flow, removed 54 selfloop flow, removed 12 redundant places. [2021-03-11 06:13:24,503 INFO L241 Difference]: Finished difference. Result has 263 places, 819 transitions, 13331 flow [2021-03-11 06:13:24,503 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=11528, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=744, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=640, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=13331, PETRI_PLACES=263, PETRI_TRANSITIONS=819} [2021-03-11 06:13:24,503 INFO L335 CegarLoopForPetriNet]: 58 programPoint places, 205 predicate places. [2021-03-11 06:13:24,503 INFO L480 AbstractCegarLoop]: Abstraction has has 263 places, 819 transitions, 13331 flow [2021-03-11 06:13:24,504 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 35.375) internal successors, (283), 8 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:13:24,504 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:13:24,504 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:13:24,504 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-03-11 06:13:24,504 INFO L428 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 06:13:24,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:13:24,504 INFO L82 PathProgramCache]: Analyzing trace with hash -236700810, now seen corresponding path program 21 times [2021-03-11 06:13:24,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:13:24,504 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562141198] [2021-03-11 06:13:24,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:13:24,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:13:24,516 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:13:24,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-11 06:13:24,526 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:13:24,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 06:13:24,539 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:13:24,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:13:24,547 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:13:24,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:13:24,553 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:13:24,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:13:24,561 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:13:24,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:13:24,563 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:13:24,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:13:24,569 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:13:24,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:13:24,576 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:13:24,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 06:13:24,584 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:13:24,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:13:24,584 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 06:13:24,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562141198] [2021-03-11 06:13:24,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:13:24,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-11 06:13:24,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760273586] [2021-03-11 06:13:24,585 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-11 06:13:24,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:13:24,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-11 06:13:24,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-03-11 06:13:24,586 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-03-11 06:13:24,591 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 819 transitions, 13331 flow. Second operand has 10 states, 10 states have (on average 34.9) internal successors, (349), 10 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:13:24,591 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:13:24,591 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-03-11 06:13:24,591 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:13:28,538 INFO L129 PetriNetUnfolder]: 5651/18112 cut-off events. [2021-03-11 06:13:28,538 INFO L130 PetriNetUnfolder]: For 304490/308632 co-relation queries the response was YES. [2021-03-11 06:13:28,663 INFO L84 FinitePrefix]: Finished finitePrefix Result has 113946 conditions, 18112 events. 5651/18112 cut-off events. For 304490/308632 co-relation queries the response was YES. Maximal size of possible extension queue 926. Compared 222972 event pairs, 896 based on Foata normal form. 1593/19189 useless extension candidates. Maximal degree in co-relation 112652. Up to 4219 conditions per place. [2021-03-11 06:13:28,711 INFO L132 encePairwiseOnDemand]: 38/53 looper letters, 547 selfloop transitions, 399 changer transitions 129/1174 dead transitions. [2021-03-11 06:13:28,711 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 1174 transitions, 21706 flow [2021-03-11 06:13:28,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-03-11 06:13:28,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-03-11 06:13:28,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 520 transitions. [2021-03-11 06:13:28,712 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8176100628930818 [2021-03-11 06:13:28,712 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 520 transitions. [2021-03-11 06:13:28,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 520 transitions. [2021-03-11 06:13:28,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:13:28,712 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 520 transitions. [2021-03-11 06:13:28,713 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 43.333333333333336) internal successors, (520), 12 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 06:13:28,714 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 53.0) internal successors, (689), 13 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:13:28,714 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 53.0) internal successors, (689), 13 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:13:28,714 INFO L185 Difference]: Start difference. First operand has 263 places, 819 transitions, 13331 flow. Second operand 12 states and 520 transitions. [2021-03-11 06:13:28,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 1174 transitions, 21706 flow [2021-03-11 06:13:30,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 1174 transitions, 21321 flow, removed 123 selfloop flow, removed 2 redundant places. [2021-03-11 06:13:30,166 INFO L241 Difference]: Finished difference. Result has 279 places, 884 transitions, 16036 flow [2021-03-11 06:13:30,167 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=13074, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=815, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=287, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=471, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=16036, PETRI_PLACES=279, PETRI_TRANSITIONS=884} [2021-03-11 06:13:30,167 INFO L335 CegarLoopForPetriNet]: 58 programPoint places, 221 predicate places. [2021-03-11 06:13:30,167 INFO L480 AbstractCegarLoop]: Abstraction has has 279 places, 884 transitions, 16036 flow [2021-03-11 06:13:30,167 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 34.9) internal successors, (349), 10 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:13:30,167 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:13:30,167 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:13:30,167 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-03-11 06:13:30,167 INFO L428 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 06:13:30,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:13:30,167 INFO L82 PathProgramCache]: Analyzing trace with hash -1914821430, now seen corresponding path program 22 times [2021-03-11 06:13:30,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:13:30,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214847335] [2021-03-11 06:13:30,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:13:30,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:13:30,184 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:13:30,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 06:13:30,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:13:30,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:13:30,197 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:13:30,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:13:30,202 INFO L142 QuantifierPusher]: treesize reduction 21, result has 34.4 percent of original size [2021-03-11 06:13:30,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-11 06:13:30,205 INFO L142 QuantifierPusher]: treesize reduction 21, result has 46.2 percent of original size [2021-03-11 06:13:30,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-11 06:13:30,218 INFO L142 QuantifierPusher]: treesize reduction 16, result has 60.0 percent of original size [2021-03-11 06:13:30,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-11 06:13:30,230 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-11 06:13:30,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:13:30,235 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-11 06:13:30,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:13:30,241 INFO L142 QuantifierPusher]: treesize reduction 1, result has 90.0 percent of original size [2021-03-11 06:13:30,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 06:13:30,252 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:13:30,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:13:30,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 06:13:30,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214847335] [2021-03-11 06:13:30,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:13:30,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-11 06:13:30,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443095583] [2021-03-11 06:13:30,253 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-11 06:13:30,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:13:30,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-11 06:13:30,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-03-11 06:13:30,254 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-03-11 06:13:30,254 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 884 transitions, 16036 flow. Second operand has 10 states, 10 states have (on average 34.9) internal successors, (349), 10 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:13:30,254 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:13:30,254 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-03-11 06:13:30,254 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:13:34,375 INFO L129 PetriNetUnfolder]: 4797/16196 cut-off events. [2021-03-11 06:13:34,376 INFO L130 PetriNetUnfolder]: For 327037/330342 co-relation queries the response was YES. [2021-03-11 06:13:34,514 INFO L84 FinitePrefix]: Finished finitePrefix Result has 108271 conditions, 16196 events. 4797/16196 cut-off events. For 327037/330342 co-relation queries the response was YES. Maximal size of possible extension queue 795. Compared 199911 event pairs, 704 based on Foata normal form. 1283/17053 useless extension candidates. Maximal degree in co-relation 106924. Up to 3039 conditions per place. [2021-03-11 06:13:34,568 INFO L132 encePairwiseOnDemand]: 40/53 looper letters, 507 selfloop transitions, 376 changer transitions 87/1069 dead transitions. [2021-03-11 06:13:34,568 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 1069 transitions, 21422 flow [2021-03-11 06:13:34,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-03-11 06:13:34,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-03-11 06:13:34,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 512 transitions. [2021-03-11 06:13:34,569 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8050314465408805 [2021-03-11 06:13:34,569 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 512 transitions. [2021-03-11 06:13:34,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 512 transitions. [2021-03-11 06:13:34,570 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:13:34,570 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 512 transitions. [2021-03-11 06:13:34,570 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 42.666666666666664) internal successors, (512), 12 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:13:34,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 53.0) internal successors, (689), 13 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:13:34,571 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 53.0) internal successors, (689), 13 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:13:34,571 INFO L185 Difference]: Start difference. First operand has 279 places, 884 transitions, 16036 flow. Second operand 12 states and 512 transitions. [2021-03-11 06:13:34,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 1069 transitions, 21422 flow [2021-03-11 06:13:36,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 1069 transitions, 20691 flow, removed 365 selfloop flow, removed 2 redundant places. [2021-03-11 06:13:36,458 INFO L241 Difference]: Finished difference. Result has 294 places, 833 transitions, 15631 flow [2021-03-11 06:13:36,458 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=14752, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=848, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=333, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=504, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=15631, PETRI_PLACES=294, PETRI_TRANSITIONS=833} [2021-03-11 06:13:36,458 INFO L335 CegarLoopForPetriNet]: 58 programPoint places, 236 predicate places. [2021-03-11 06:13:36,459 INFO L480 AbstractCegarLoop]: Abstraction has has 294 places, 833 transitions, 15631 flow [2021-03-11 06:13:36,459 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 34.9) internal successors, (349), 10 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:13:36,459 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:13:36,459 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:13:36,459 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-03-11 06:13:36,459 INFO L428 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 06:13:36,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:13:36,459 INFO L82 PathProgramCache]: Analyzing trace with hash 670393400, now seen corresponding path program 23 times [2021-03-11 06:13:36,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:13:36,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107981648] [2021-03-11 06:13:36,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:13:36,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:13:36,485 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:13:36,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-11 06:13:36,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:13:36,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-11 06:13:36,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:13:36,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 06:13:36,498 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:13:36,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 06:13:36,499 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:13:36,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:13:36,504 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:13:36,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-11 06:13:36,508 INFO L142 QuantifierPusher]: treesize reduction 14, result has 33.3 percent of original size [2021-03-11 06:13:36,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:13:36,514 INFO L142 QuantifierPusher]: treesize reduction 16, result has 36.0 percent of original size [2021-03-11 06:13:36,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 06:13:36,522 INFO L142 QuantifierPusher]: treesize reduction 24, result has 27.3 percent of original size [2021-03-11 06:13:36,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 06:13:36,530 INFO L142 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size [2021-03-11 06:13:36,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:13:36,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:13:36,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:13:36,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 06:13:36,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107981648] [2021-03-11 06:13:36,531 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:13:36,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 06:13:36,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542174138] [2021-03-11 06:13:36,532 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 06:13:36,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:13:36,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 06:13:36,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-03-11 06:13:36,534 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-03-11 06:13:36,534 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 833 transitions, 15631 flow. Second operand has 8 states, 8 states have (on average 35.375) internal successors, (283), 8 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:13:36,534 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:13:36,534 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-03-11 06:13:36,534 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:13:40,129 INFO L129 PetriNetUnfolder]: 4090/14449 cut-off events. [2021-03-11 06:13:40,129 INFO L130 PetriNetUnfolder]: For 296535/299503 co-relation queries the response was YES. [2021-03-11 06:13:40,280 INFO L84 FinitePrefix]: Finished finitePrefix Result has 97418 conditions, 14449 events. 4090/14449 cut-off events. For 296535/299503 co-relation queries the response was YES. Maximal size of possible extension queue 633. Compared 177494 event pairs, 990 based on Foata normal form. 614/14652 useless extension candidates. Maximal degree in co-relation 96072. Up to 6639 conditions per place. [2021-03-11 06:13:40,322 INFO L132 encePairwiseOnDemand]: 40/53 looper letters, 562 selfloop transitions, 76 changer transitions 125/862 dead transitions. [2021-03-11 06:13:40,322 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 862 transitions, 17484 flow [2021-03-11 06:13:40,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-11 06:13:40,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-11 06:13:40,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 426 transitions. [2021-03-11 06:13:40,323 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8037735849056604 [2021-03-11 06:13:40,323 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 426 transitions. [2021-03-11 06:13:40,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 426 transitions. [2021-03-11 06:13:40,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:13:40,323 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 426 transitions. [2021-03-11 06:13:40,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 42.6) internal successors, (426), 10 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:13:40,324 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 53.0) internal successors, (583), 11 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:13:40,324 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 53.0) internal successors, (583), 11 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:13:40,324 INFO L185 Difference]: Start difference. First operand has 294 places, 833 transitions, 15631 flow. Second operand 10 states and 426 transitions. [2021-03-11 06:13:40,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 862 transitions, 17484 flow [2021-03-11 06:13:41,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 862 transitions, 16995 flow, removed 129 selfloop flow, removed 8 redundant places. [2021-03-11 06:13:42,000 INFO L241 Difference]: Finished difference. Result has 299 places, 697 transitions, 12411 flow [2021-03-11 06:13:42,001 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=13653, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=762, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=693, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12411, PETRI_PLACES=299, PETRI_TRANSITIONS=697} [2021-03-11 06:13:42,001 INFO L335 CegarLoopForPetriNet]: 58 programPoint places, 241 predicate places. [2021-03-11 06:13:42,001 INFO L480 AbstractCegarLoop]: Abstraction has has 299 places, 697 transitions, 12411 flow [2021-03-11 06:13:42,001 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 35.375) internal successors, (283), 8 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:13:42,001 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:13:42,001 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:13:42,001 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-03-11 06:13:42,001 INFO L428 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 06:13:42,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:13:42,002 INFO L82 PathProgramCache]: Analyzing trace with hash 211367926, now seen corresponding path program 24 times [2021-03-11 06:13:42,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:13:42,002 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578698480] [2021-03-11 06:13:42,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:13:42,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:13:42,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:13:42,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-11 06:13:42,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:13:42,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-11 06:13:42,048 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:13:42,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 06:13:42,060 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:13:42,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-11 06:13:42,072 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:13:42,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 06:13:42,083 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:13:42,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:13:42,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:13:42,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:13:42,101 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:13:42,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:13:42,108 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:13:42,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:13:42,115 INFO L142 QuantifierPusher]: treesize reduction 1, result has 90.0 percent of original size [2021-03-11 06:13:42,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 06:13:42,123 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:13:42,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:13:42,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 06:13:42,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578698480] [2021-03-11 06:13:42,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:13:42,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-03-11 06:13:42,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703669145] [2021-03-11 06:13:42,124 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-11 06:13:42,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:13:42,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-11 06:13:42,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-03-11 06:13:42,125 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-03-11 06:13:42,125 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 697 transitions, 12411 flow. Second operand has 12 states, 12 states have (on average 34.583333333333336) internal successors, (415), 12 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:13:42,125 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:13:42,125 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-03-11 06:13:42,125 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:13:45,280 INFO L129 PetriNetUnfolder]: 3388/12431 cut-off events. [2021-03-11 06:13:45,281 INFO L130 PetriNetUnfolder]: For 234570/236752 co-relation queries the response was YES. [2021-03-11 06:13:45,381 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82315 conditions, 12431 events. 3388/12431 cut-off events. For 234570/236752 co-relation queries the response was YES. Maximal size of possible extension queue 544. Compared 150434 event pairs, 519 based on Foata normal form. 840/12964 useless extension candidates. Maximal degree in co-relation 81861. Up to 1910 conditions per place. [2021-03-11 06:13:45,414 INFO L132 encePairwiseOnDemand]: 35/53 looper letters, 417 selfloop transitions, 298 changer transitions 115/929 dead transitions. [2021-03-11 06:13:45,415 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 929 transitions, 18292 flow [2021-03-11 06:13:45,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-03-11 06:13:45,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-03-11 06:13:45,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 764 transitions. [2021-03-11 06:13:45,416 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.80083857442348 [2021-03-11 06:13:45,416 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 764 transitions. [2021-03-11 06:13:45,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 764 transitions. [2021-03-11 06:13:45,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:13:45,417 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 764 transitions. [2021-03-11 06:13:45,417 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 42.44444444444444) internal successors, (764), 18 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:13:45,418 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 53.0) internal successors, (1007), 19 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:13:45,418 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 53.0) internal successors, (1007), 19 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:13:45,418 INFO L185 Difference]: Start difference. First operand has 299 places, 697 transitions, 12411 flow. Second operand 18 states and 764 transitions. [2021-03-11 06:13:45,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 929 transitions, 18292 flow [2021-03-11 06:13:46,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 929 transitions, 17756 flow, removed 267 selfloop flow, removed 4 redundant places. [2021-03-11 06:13:46,688 INFO L241 Difference]: Finished difference. Result has 323 places, 691 transitions, 12944 flow [2021-03-11 06:13:46,689 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=11523, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=672, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=198, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=432, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=12944, PETRI_PLACES=323, PETRI_TRANSITIONS=691} [2021-03-11 06:13:46,689 INFO L335 CegarLoopForPetriNet]: 58 programPoint places, 265 predicate places. [2021-03-11 06:13:46,689 INFO L480 AbstractCegarLoop]: Abstraction has has 323 places, 691 transitions, 12944 flow [2021-03-11 06:13:46,689 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 34.583333333333336) internal successors, (415), 12 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:13:46,689 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:13:46,689 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:13:46,689 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-03-11 06:13:46,689 INFO L428 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 06:13:46,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:13:46,690 INFO L82 PathProgramCache]: Analyzing trace with hash -1567063320, now seen corresponding path program 25 times [2021-03-11 06:13:46,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:13:46,690 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565057029] [2021-03-11 06:13:46,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:13:46,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:13:46,713 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:13:46,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-11 06:13:46,726 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:13:46,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 06:13:46,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:13:46,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:13:46,742 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:13:46,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:13:46,748 INFO L142 QuantifierPusher]: treesize reduction 28, result has 33.3 percent of original size [2021-03-11 06:13:46,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-11 06:13:46,761 INFO L142 QuantifierPusher]: treesize reduction 4, result has 85.7 percent of original size [2021-03-11 06:13:46,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-11 06:13:46,775 INFO L142 QuantifierPusher]: treesize reduction 12, result has 36.8 percent of original size [2021-03-11 06:13:46,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:13:46,776 INFO L142 QuantifierPusher]: treesize reduction 12, result has 36.8 percent of original size [2021-03-11 06:13:46,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:13:46,785 INFO L142 QuantifierPusher]: treesize reduction 12, result has 36.8 percent of original size [2021-03-11 06:13:46,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:13:46,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:13:46,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:13:46,802 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:13:46,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:13:46,802 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 06:13:46,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565057029] [2021-03-11 06:13:46,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:13:46,803 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-11 06:13:46,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160272242] [2021-03-11 06:13:46,803 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-11 06:13:46,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:13:46,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-11 06:13:46,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-03-11 06:13:46,803 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-03-11 06:13:46,804 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 691 transitions, 12944 flow. Second operand has 11 states, 11 states have (on average 34.72727272727273) internal successors, (382), 11 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:13:46,804 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:13:46,804 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-03-11 06:13:46,804 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:13:49,061 INFO L129 PetriNetUnfolder]: 2150/7534 cut-off events. [2021-03-11 06:13:49,062 INFO L130 PetriNetUnfolder]: For 179262/180401 co-relation queries the response was YES. [2021-03-11 06:13:49,131 INFO L84 FinitePrefix]: Finished finitePrefix Result has 55059 conditions, 7534 events. 2150/7534 cut-off events. For 179262/180401 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 83608 event pairs, 374 based on Foata normal form. 636/7963 useless extension candidates. Maximal degree in co-relation 54944. Up to 1244 conditions per place. [2021-03-11 06:13:49,154 INFO L132 encePairwiseOnDemand]: 37/53 looper letters, 325 selfloop transitions, 321 changer transitions 54/765 dead transitions. [2021-03-11 06:13:49,154 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 765 transitions, 16092 flow [2021-03-11 06:13:49,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-03-11 06:13:49,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-03-11 06:13:49,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 712 transitions. [2021-03-11 06:13:49,156 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7902330743618202 [2021-03-11 06:13:49,156 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 712 transitions. [2021-03-11 06:13:49,156 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 712 transitions. [2021-03-11 06:13:49,156 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:13:49,156 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 712 transitions. [2021-03-11 06:13:49,157 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 41.88235294117647) internal successors, (712), 17 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:13:49,157 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 53.0) internal successors, (954), 18 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:13:49,157 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 53.0) internal successors, (954), 18 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:13:49,157 INFO L185 Difference]: Start difference. First operand has 323 places, 691 transitions, 12944 flow. Second operand 17 states and 712 transitions. [2021-03-11 06:13:49,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 765 transitions, 16092 flow [2021-03-11 06:13:50,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 765 transitions, 15387 flow, removed 221 selfloop flow, removed 14 redundant places. [2021-03-11 06:13:50,337 INFO L241 Difference]: Finished difference. Result has 323 places, 618 transitions, 12161 flow [2021-03-11 06:13:50,337 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=11427, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=628, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=299, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=12161, PETRI_PLACES=323, PETRI_TRANSITIONS=618} [2021-03-11 06:13:50,337 INFO L335 CegarLoopForPetriNet]: 58 programPoint places, 265 predicate places. [2021-03-11 06:13:50,338 INFO L480 AbstractCegarLoop]: Abstraction has has 323 places, 618 transitions, 12161 flow [2021-03-11 06:13:50,338 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 34.72727272727273) internal successors, (382), 11 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:13:50,338 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:13:50,338 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:13:50,338 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-03-11 06:13:50,338 INFO L428 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 06:13:50,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:13:50,338 INFO L82 PathProgramCache]: Analyzing trace with hash 536930372, now seen corresponding path program 26 times [2021-03-11 06:13:50,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:13:50,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087698095] [2021-03-11 06:13:50,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:13:50,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:13:50,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:13:50,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-11 06:13:50,362 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:13:50,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-11 06:13:50,362 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:13:50,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 06:13:50,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:13:50,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:13:50,379 INFO L142 QuantifierPusher]: treesize reduction 9, result has 60.9 percent of original size [2021-03-11 06:13:50,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-11 06:13:50,388 INFO L142 QuantifierPusher]: treesize reduction 9, result has 64.0 percent of original size [2021-03-11 06:13:50,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-11 06:13:50,399 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:13:50,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-11 06:13:50,410 INFO L142 QuantifierPusher]: treesize reduction 17, result has 52.8 percent of original size [2021-03-11 06:13:50,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 06:13:50,424 INFO L142 QuantifierPusher]: treesize reduction 3, result has 89.3 percent of original size [2021-03-11 06:13:50,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-11 06:13:50,439 INFO L142 QuantifierPusher]: treesize reduction 1, result has 93.3 percent of original size [2021-03-11 06:13:50,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-11 06:13:50,450 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:13:50,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:13:50,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 06:13:50,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087698095] [2021-03-11 06:13:50,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:13:50,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-11 06:13:50,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929193348] [2021-03-11 06:13:50,452 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-11 06:13:50,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:13:50,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-11 06:13:50,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-03-11 06:13:50,452 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-03-11 06:13:50,453 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 618 transitions, 12161 flow. Second operand has 11 states, 11 states have (on average 34.72727272727273) internal successors, (382), 11 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:13:50,453 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:13:50,453 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-03-11 06:13:50,453 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:13:52,594 INFO L129 PetriNetUnfolder]: 2142/7673 cut-off events. [2021-03-11 06:13:52,595 INFO L130 PetriNetUnfolder]: For 183780/184934 co-relation queries the response was YES. [2021-03-11 06:13:52,694 INFO L84 FinitePrefix]: Finished finitePrefix Result has 56292 conditions, 7673 events. 2142/7673 cut-off events. For 183780/184934 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 86107 event pairs, 461 based on Foata normal form. 408/7855 useless extension candidates. Maximal degree in co-relation 56181. Up to 3116 conditions per place. [2021-03-11 06:13:52,720 INFO L132 encePairwiseOnDemand]: 35/53 looper letters, 488 selfloop transitions, 196 changer transitions 35/784 dead transitions. [2021-03-11 06:13:52,720 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 784 transitions, 16825 flow [2021-03-11 06:13:52,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-11 06:13:52,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-11 06:13:52,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 563 transitions. [2021-03-11 06:13:52,721 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8171262699564587 [2021-03-11 06:13:52,721 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 563 transitions. [2021-03-11 06:13:52,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 563 transitions. [2021-03-11 06:13:52,721 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:13:52,721 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 563 transitions. [2021-03-11 06:13:52,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 43.30769230769231) internal successors, (563), 13 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:13:52,722 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 53.0) internal successors, (742), 14 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:13:52,722 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 53.0) internal successors, (742), 14 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:13:52,723 INFO L185 Difference]: Start difference. First operand has 323 places, 618 transitions, 12161 flow. Second operand 13 states and 563 transitions. [2021-03-11 06:13:52,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 784 transitions, 16825 flow [2021-03-11 06:13:53,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 784 transitions, 16251 flow, removed 125 selfloop flow, removed 13 redundant places. [2021-03-11 06:13:53,736 INFO L241 Difference]: Finished difference. Result has 324 places, 674 transitions, 13633 flow [2021-03-11 06:13:53,736 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=11401, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=605, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=13633, PETRI_PLACES=324, PETRI_TRANSITIONS=674} [2021-03-11 06:13:53,737 INFO L335 CegarLoopForPetriNet]: 58 programPoint places, 266 predicate places. [2021-03-11 06:13:53,737 INFO L480 AbstractCegarLoop]: Abstraction has has 324 places, 674 transitions, 13633 flow [2021-03-11 06:13:53,737 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 34.72727272727273) internal successors, (382), 11 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:13:53,737 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:13:53,737 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:13:53,737 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-03-11 06:13:53,737 INFO L428 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 06:13:53,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:13:53,737 INFO L82 PathProgramCache]: Analyzing trace with hash 548771670, now seen corresponding path program 27 times [2021-03-11 06:13:53,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:13:53,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552103324] [2021-03-11 06:13:53,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:13:53,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:13:53,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:13:53,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:13:53,839 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:13:53,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 06:13:53,842 INFO L142 QuantifierPusher]: treesize reduction 7, result has 73.1 percent of original size [2021-03-11 06:13:53,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 06:13:53,852 INFO L142 QuantifierPusher]: treesize reduction 14, result has 39.1 percent of original size [2021-03-11 06:13:53,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 06:13:53,859 INFO L142 QuantifierPusher]: treesize reduction 26, result has 21.2 percent of original size [2021-03-11 06:13:53,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:13:53,866 INFO L142 QuantifierPusher]: treesize reduction 14, result has 39.1 percent of original size [2021-03-11 06:13:53,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 06:13:53,872 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:13:53,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:13:53,872 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 06:13:53,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552103324] [2021-03-11 06:13:53,872 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:13:53,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 06:13:53,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870106293] [2021-03-11 06:13:53,873 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 06:13:53,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:13:53,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 06:13:53,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-03-11 06:13:53,873 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-03-11 06:13:53,873 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 674 transitions, 13633 flow. Second operand has 8 states, 8 states have (on average 35.375) internal successors, (283), 8 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:13:53,873 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:13:53,873 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-03-11 06:13:53,873 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:13:56,022 INFO L129 PetriNetUnfolder]: 2466/8789 cut-off events. [2021-03-11 06:13:56,022 INFO L130 PetriNetUnfolder]: For 224025/225317 co-relation queries the response was YES. [2021-03-11 06:13:56,103 INFO L84 FinitePrefix]: Finished finitePrefix Result has 65538 conditions, 8789 events. 2466/8789 cut-off events. For 224025/225317 co-relation queries the response was YES. Maximal size of possible extension queue 579. Compared 101904 event pairs, 506 based on Foata normal form. 474/8983 useless extension candidates. Maximal degree in co-relation 65424. Up to 2161 conditions per place. [2021-03-11 06:13:56,131 INFO L132 encePairwiseOnDemand]: 38/53 looper letters, 437 selfloop transitions, 352 changer transitions 9/863 dead transitions. [2021-03-11 06:13:56,131 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 863 transitions, 18977 flow [2021-03-11 06:13:56,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-03-11 06:13:56,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-03-11 06:13:56,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 516 transitions. [2021-03-11 06:13:56,132 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8113207547169812 [2021-03-11 06:13:56,132 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 516 transitions. [2021-03-11 06:13:56,132 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 516 transitions. [2021-03-11 06:13:56,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:13:56,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 516 transitions. [2021-03-11 06:13:56,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 43.0) internal successors, (516), 12 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:13:56,134 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 53.0) internal successors, (689), 13 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:13:56,134 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 53.0) internal successors, (689), 13 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:13:56,134 INFO L185 Difference]: Start difference. First operand has 324 places, 674 transitions, 13633 flow. Second operand 12 states and 516 transitions. [2021-03-11 06:13:56,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 863 transitions, 18977 flow [2021-03-11 06:13:57,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 863 transitions, 18436 flow, removed 160 selfloop flow, removed 5 redundant places. [2021-03-11 06:13:57,490 INFO L241 Difference]: Finished difference. Result has 333 places, 716 transitions, 15186 flow [2021-03-11 06:13:57,491 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=13235, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=674, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=311, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=15186, PETRI_PLACES=333, PETRI_TRANSITIONS=716} [2021-03-11 06:13:57,491 INFO L335 CegarLoopForPetriNet]: 58 programPoint places, 275 predicate places. [2021-03-11 06:13:57,491 INFO L480 AbstractCegarLoop]: Abstraction has has 333 places, 716 transitions, 15186 flow [2021-03-11 06:13:57,491 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 35.375) internal successors, (283), 8 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:13:57,491 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:13:57,491 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:13:57,491 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-03-11 06:13:57,491 INFO L428 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 06:13:57,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:13:57,491 INFO L82 PathProgramCache]: Analyzing trace with hash -2130583314, now seen corresponding path program 28 times [2021-03-11 06:13:57,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:13:57,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249957490] [2021-03-11 06:13:57,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:13:57,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:13:57,502 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:13:57,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-11 06:13:57,513 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:13:57,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 06:13:57,516 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:13:57,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-11 06:13:57,518 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:13:57,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 06:13:57,526 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:13:57,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:13:57,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:13:57,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:13:57,538 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:13:57,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:13:57,544 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:13:57,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:13:57,553 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:13:57,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:13:57,561 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:13:57,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:13:57,561 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 06:13:57,561 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249957490] [2021-03-11 06:13:57,561 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:13:57,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 06:13:57,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920667745] [2021-03-11 06:13:57,562 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 06:13:57,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:13:57,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 06:13:57,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-03-11 06:13:57,562 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-03-11 06:13:57,562 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 716 transitions, 15186 flow. Second operand has 9 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 06:13:57,562 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:13:57,563 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-03-11 06:13:57,563 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:13:59,516 INFO L129 PetriNetUnfolder]: 1956/7067 cut-off events. [2021-03-11 06:13:59,516 INFO L130 PetriNetUnfolder]: For 190371/191327 co-relation queries the response was YES. [2021-03-11 06:13:59,584 INFO L84 FinitePrefix]: Finished finitePrefix Result has 53951 conditions, 7067 events. 1956/7067 cut-off events. For 190371/191327 co-relation queries the response was YES. Maximal size of possible extension queue 516. Compared 80234 event pairs, 463 based on Foata normal form. 393/7201 useless extension candidates. Maximal degree in co-relation 53836. Up to 1577 conditions per place. [2021-03-11 06:13:59,603 INFO L132 encePairwiseOnDemand]: 38/53 looper letters, 333 selfloop transitions, 225 changer transitions 137/752 dead transitions. [2021-03-11 06:13:59,603 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 752 transitions, 17194 flow [2021-03-11 06:13:59,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-03-11 06:13:59,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-03-11 06:13:59,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 665 transitions. [2021-03-11 06:13:59,604 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7841981132075472 [2021-03-11 06:13:59,604 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 665 transitions. [2021-03-11 06:13:59,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 665 transitions. [2021-03-11 06:13:59,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:13:59,604 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 665 transitions. [2021-03-11 06:13:59,605 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 41.5625) internal successors, (665), 16 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:13:59,605 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 53.0) internal successors, (901), 17 states have internal predecessors, (901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:13:59,606 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 53.0) internal successors, (901), 17 states have internal predecessors, (901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:13:59,606 INFO L185 Difference]: Start difference. First operand has 333 places, 716 transitions, 15186 flow. Second operand 16 states and 665 transitions. [2021-03-11 06:13:59,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 752 transitions, 17194 flow [2021-03-11 06:14:00,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 752 transitions, 16994 flow, removed 78 selfloop flow, removed 7 redundant places. [2021-03-11 06:14:00,888 INFO L241 Difference]: Finished difference. Result has 347 places, 560 transitions, 12035 flow [2021-03-11 06:14:00,888 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=13699, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=655, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=207, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=434, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=12035, PETRI_PLACES=347, PETRI_TRANSITIONS=560} [2021-03-11 06:14:00,888 INFO L335 CegarLoopForPetriNet]: 58 programPoint places, 289 predicate places. [2021-03-11 06:14:00,888 INFO L480 AbstractCegarLoop]: Abstraction has has 347 places, 560 transitions, 12035 flow [2021-03-11 06:14:00,888 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 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 06:14:00,888 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:14:00,889 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:14:00,889 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-03-11 06:14:00,889 INFO L428 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 06:14:00,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:14:00,889 INFO L82 PathProgramCache]: Analyzing trace with hash -1920373896, now seen corresponding path program 29 times [2021-03-11 06:14:00,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:14:00,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831835249] [2021-03-11 06:14:00,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:14:00,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:14:00,906 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:00,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:14:00,911 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:00,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:14:00,916 INFO L142 QuantifierPusher]: treesize reduction 13, result has 66.7 percent of original size [2021-03-11 06:14:00,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-11 06:14:00,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:00,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 06:14:00,922 INFO L142 QuantifierPusher]: treesize reduction 15, result has 31.8 percent of original size [2021-03-11 06:14:00,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:14:00,926 INFO L142 QuantifierPusher]: treesize reduction 15, result has 37.5 percent of original size [2021-03-11 06:14:00,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 06:14:00,932 INFO L142 QuantifierPusher]: treesize reduction 16, result has 30.4 percent of original size [2021-03-11 06:14:00,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:14:00,939 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:00,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:14:00,939 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 06:14:00,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831835249] [2021-03-11 06:14:00,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:14:00,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 06:14:00,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139210631] [2021-03-11 06:14:00,940 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 06:14:00,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:14:00,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 06:14:00,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 06:14:00,940 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-03-11 06:14:00,940 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 560 transitions, 12035 flow. Second operand has 8 states, 8 states have (on average 35.375) internal successors, (283), 8 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:00,940 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:14:00,940 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-03-11 06:14:00,940 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:14:02,669 INFO L129 PetriNetUnfolder]: 1756/6656 cut-off events. [2021-03-11 06:14:02,669 INFO L130 PetriNetUnfolder]: For 191574/192354 co-relation queries the response was YES. [2021-03-11 06:14:02,732 INFO L84 FinitePrefix]: Finished finitePrefix Result has 52008 conditions, 6656 events. 1756/6656 cut-off events. For 191574/192354 co-relation queries the response was YES. Maximal size of possible extension queue 460. Compared 75437 event pairs, 399 based on Foata normal form. 297/6737 useless extension candidates. Maximal degree in co-relation 51889. Up to 1187 conditions per place. [2021-03-11 06:14:02,751 INFO L132 encePairwiseOnDemand]: 41/53 looper letters, 369 selfloop transitions, 215 changer transitions 116/756 dead transitions. [2021-03-11 06:14:02,751 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 756 transitions, 17849 flow [2021-03-11 06:14:02,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-11 06:14:02,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-11 06:14:02,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 443 transitions. [2021-03-11 06:14:02,752 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8358490566037736 [2021-03-11 06:14:02,752 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 443 transitions. [2021-03-11 06:14:02,752 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 443 transitions. [2021-03-11 06:14:02,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:14:02,752 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 443 transitions. [2021-03-11 06:14:02,753 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 44.3) internal successors, (443), 10 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:02,753 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 53.0) internal successors, (583), 11 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:02,753 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 53.0) internal successors, (583), 11 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:02,753 INFO L185 Difference]: Start difference. First operand has 347 places, 560 transitions, 12035 flow. Second operand 10 states and 443 transitions. [2021-03-11 06:14:02,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 756 transitions, 17849 flow [2021-03-11 06:14:03,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 756 transitions, 17377 flow, removed 91 selfloop flow, removed 10 redundant places. [2021-03-11 06:14:03,948 INFO L241 Difference]: Finished difference. Result has 349 places, 570 transitions, 12887 flow [2021-03-11 06:14:03,948 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=11648, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=559, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=176, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12887, PETRI_PLACES=349, PETRI_TRANSITIONS=570} [2021-03-11 06:14:03,948 INFO L335 CegarLoopForPetriNet]: 58 programPoint places, 291 predicate places. [2021-03-11 06:14:03,948 INFO L480 AbstractCegarLoop]: Abstraction has has 349 places, 570 transitions, 12887 flow [2021-03-11 06:14:03,948 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 35.375) internal successors, (283), 8 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:03,948 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:14:03,949 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:14:03,949 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-03-11 06:14:03,949 INFO L428 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 06:14:03,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:14:03,949 INFO L82 PathProgramCache]: Analyzing trace with hash -2105272602, now seen corresponding path program 30 times [2021-03-11 06:14:03,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:14:03,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620751155] [2021-03-11 06:14:03,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:14:03,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:14:03,976 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:03,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 06:14:03,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:03,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 06:14:03,994 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:03,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:14:04,001 INFO L142 QuantifierPusher]: treesize reduction 4, result has 84.0 percent of original size [2021-03-11 06:14:04,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 06:14:04,019 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:04,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-11 06:14:04,037 INFO L142 QuantifierPusher]: treesize reduction 4, result has 88.2 percent of original size [2021-03-11 06:14:04,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-11 06:14:04,071 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:04,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-11 06:14:04,096 INFO L142 QuantifierPusher]: treesize reduction 14, result has 75.9 percent of original size [2021-03-11 06:14:04,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-11 06:14:04,121 INFO L142 QuantifierPusher]: treesize reduction 12, result has 68.4 percent of original size [2021-03-11 06:14:04,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-11 06:14:04,144 INFO L142 QuantifierPusher]: treesize reduction 23, result has 65.2 percent of original size [2021-03-11 06:14:04,145 INFO L147 QuantifierPusher]: treesize reduction 5, result has 88.4 percent of original size 38 [2021-03-11 06:14:04,170 INFO L142 QuantifierPusher]: treesize reduction 27, result has 27.0 percent of original size [2021-03-11 06:14:04,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:14:04,180 INFO L142 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size [2021-03-11 06:14:04,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:14:04,180 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:04,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:14:04,181 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 06:14:04,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620751155] [2021-03-11 06:14:04,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:14:04,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-03-11 06:14:04,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732731633] [2021-03-11 06:14:04,181 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-11 06:14:04,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:14:04,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-11 06:14:04,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-03-11 06:14:04,182 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-03-11 06:14:04,182 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 570 transitions, 12887 flow. Second operand has 12 states, 12 states have (on average 34.583333333333336) internal successors, (415), 12 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:04,182 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:14:04,182 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-03-11 06:14:04,182 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:14:06,943 INFO L129 PetriNetUnfolder]: 1916/7246 cut-off events. [2021-03-11 06:14:06,943 INFO L130 PetriNetUnfolder]: For 233698/234633 co-relation queries the response was YES. [2021-03-11 06:14:07,022 INFO L84 FinitePrefix]: Finished finitePrefix Result has 58955 conditions, 7246 events. 1916/7246 cut-off events. For 233698/234633 co-relation queries the response was YES. Maximal size of possible extension queue 493. Compared 83251 event pairs, 601 based on Foata normal form. 298/7314 useless extension candidates. Maximal degree in co-relation 58834. Up to 2802 conditions per place. [2021-03-11 06:14:07,045 INFO L132 encePairwiseOnDemand]: 38/53 looper letters, 448 selfloop transitions, 263 changer transitions 53/820 dead transitions. [2021-03-11 06:14:07,045 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 820 transitions, 20562 flow [2021-03-11 06:14:07,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-03-11 06:14:07,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2021-03-11 06:14:07,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1290 transitions. [2021-03-11 06:14:07,047 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7375643224699828 [2021-03-11 06:14:07,047 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1290 transitions. [2021-03-11 06:14:07,047 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1290 transitions. [2021-03-11 06:14:07,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:14:07,047 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1290 transitions. [2021-03-11 06:14:07,048 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 39.09090909090909) internal successors, (1290), 33 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:07,050 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 53.0) internal successors, (1802), 34 states have internal predecessors, (1802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:07,050 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 53.0) internal successors, (1802), 34 states have internal predecessors, (1802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:07,050 INFO L185 Difference]: Start difference. First operand has 349 places, 570 transitions, 12887 flow. Second operand 33 states and 1290 transitions. [2021-03-11 06:14:07,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 820 transitions, 20562 flow [2021-03-11 06:14:08,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 820 transitions, 20269 flow, removed 86 selfloop flow, removed 7 redundant places. [2021-03-11 06:14:08,349 INFO L241 Difference]: Finished difference. Result has 394 places, 702 transitions, 17253 flow [2021-03-11 06:14:08,350 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=12389, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=558, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=17253, PETRI_PLACES=394, PETRI_TRANSITIONS=702} [2021-03-11 06:14:08,350 INFO L335 CegarLoopForPetriNet]: 58 programPoint places, 336 predicate places. [2021-03-11 06:14:08,350 INFO L480 AbstractCegarLoop]: Abstraction has has 394 places, 702 transitions, 17253 flow [2021-03-11 06:14:08,350 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 34.583333333333336) internal successors, (415), 12 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:08,350 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:14:08,350 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:14:08,350 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-03-11 06:14:08,350 INFO L428 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 06:14:08,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:14:08,350 INFO L82 PathProgramCache]: Analyzing trace with hash -2123704910, now seen corresponding path program 31 times [2021-03-11 06:14:08,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:14:08,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118216009] [2021-03-11 06:14:08,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:14:08,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:14:08,363 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:08,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-11 06:14:08,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:08,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-11 06:14:08,374 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:08,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 06:14:08,382 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:08,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:14:08,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:08,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:14:08,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:08,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-11 06:14:08,395 INFO L142 QuantifierPusher]: treesize reduction 28, result has 30.0 percent of original size [2021-03-11 06:14:08,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-11 06:14:08,401 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:08,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 06:14:08,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:08,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-11 06:14:08,420 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:08,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:14:08,428 INFO L142 QuantifierPusher]: treesize reduction 9, result has 66.7 percent of original size [2021-03-11 06:14:08,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-11 06:14:08,440 INFO L142 QuantifierPusher]: treesize reduction 8, result has 55.6 percent of original size [2021-03-11 06:14:08,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:14:08,449 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:08,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:14:08,450 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:08,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:14:08,450 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 06:14:08,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118216009] [2021-03-11 06:14:08,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:14:08,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-03-11 06:14:08,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428507070] [2021-03-11 06:14:08,451 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-11 06:14:08,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:14:08,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-11 06:14:08,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-03-11 06:14:08,451 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-03-11 06:14:08,451 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 702 transitions, 17253 flow. Second operand has 12 states, 12 states have (on average 34.583333333333336) internal successors, (415), 12 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:08,451 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:14:08,451 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-03-11 06:14:08,451 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:14:10,795 INFO L129 PetriNetUnfolder]: 1967/7329 cut-off events. [2021-03-11 06:14:10,795 INFO L130 PetriNetUnfolder]: For 276454/277552 co-relation queries the response was YES. [2021-03-11 06:14:10,896 INFO L84 FinitePrefix]: Finished finitePrefix Result has 62931 conditions, 7329 events. 1967/7329 cut-off events. For 276454/277552 co-relation queries the response was YES. Maximal size of possible extension queue 520. Compared 84157 event pairs, 612 based on Foata normal form. 322/7405 useless extension candidates. Maximal degree in co-relation 62793. Up to 3076 conditions per place. [2021-03-11 06:14:11,074 INFO L132 encePairwiseOnDemand]: 38/53 looper letters, 516 selfloop transitions, 221 changer transitions 19/812 dead transitions. [2021-03-11 06:14:11,074 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 812 transitions, 21683 flow [2021-03-11 06:14:11,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-03-11 06:14:11,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-03-11 06:14:11,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 569 transitions. [2021-03-11 06:14:11,075 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7668463611859838 [2021-03-11 06:14:11,075 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 569 transitions. [2021-03-11 06:14:11,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 569 transitions. [2021-03-11 06:14:11,075 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:14:11,075 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 569 transitions. [2021-03-11 06:14:11,076 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 40.642857142857146) internal successors, (569), 14 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:11,076 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 53.0) internal successors, (795), 15 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:11,076 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 53.0) internal successors, (795), 15 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:11,076 INFO L185 Difference]: Start difference. First operand has 394 places, 702 transitions, 17253 flow. Second operand 14 states and 569 transitions. [2021-03-11 06:14:11,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 812 transitions, 21683 flow [2021-03-11 06:14:12,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 812 transitions, 20653 flow, removed 428 selfloop flow, removed 11 redundant places. [2021-03-11 06:14:12,613 INFO L241 Difference]: Finished difference. Result has 395 places, 752 transitions, 18606 flow [2021-03-11 06:14:12,613 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=16320, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=698, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=480, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=18606, PETRI_PLACES=395, PETRI_TRANSITIONS=752} [2021-03-11 06:14:12,614 INFO L335 CegarLoopForPetriNet]: 58 programPoint places, 337 predicate places. [2021-03-11 06:14:12,614 INFO L480 AbstractCegarLoop]: Abstraction has has 395 places, 752 transitions, 18606 flow [2021-03-11 06:14:12,614 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 34.583333333333336) internal successors, (415), 12 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:12,614 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:14:12,614 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:14:12,614 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-03-11 06:14:12,614 INFO L428 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 06:14:12,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:14:12,614 INFO L82 PathProgramCache]: Analyzing trace with hash 1136369414, now seen corresponding path program 32 times [2021-03-11 06:14:12,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:14:12,614 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680071945] [2021-03-11 06:14:12,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:14:12,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:14:12,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:12,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-11 06:14:12,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:12,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-11 06:14:12,668 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:12,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 06:14:12,676 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:12,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:14:12,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:12,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:14:12,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:12,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-11 06:14:12,688 INFO L142 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size [2021-03-11 06:14:12,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-11 06:14:12,695 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:12,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-11 06:14:12,702 INFO L142 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size [2021-03-11 06:14:12,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-11 06:14:12,709 INFO L142 QuantifierPusher]: treesize reduction 5, result has 64.3 percent of original size [2021-03-11 06:14:12,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 06:14:12,716 INFO L142 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size [2021-03-11 06:14:12,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:14:12,717 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:12,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:14:12,717 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 06:14:12,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680071945] [2021-03-11 06:14:12,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:14:12,718 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-11 06:14:12,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939281375] [2021-03-11 06:14:12,718 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-11 06:14:12,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:14:12,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-11 06:14:12,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-03-11 06:14:12,719 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-03-11 06:14:12,719 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 752 transitions, 18606 flow. Second operand has 10 states, 10 states have (on average 34.9) internal successors, (349), 10 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:12,719 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:14:12,719 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-03-11 06:14:12,719 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:14:14,928 INFO L129 PetriNetUnfolder]: 1827/6900 cut-off events. [2021-03-11 06:14:14,929 INFO L130 PetriNetUnfolder]: For 269413/270489 co-relation queries the response was YES. [2021-03-11 06:14:14,996 INFO L84 FinitePrefix]: Finished finitePrefix Result has 59678 conditions, 6900 events. 1827/6900 cut-off events. For 269413/270489 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 78887 event pairs, 621 based on Foata normal form. 249/6922 useless extension candidates. Maximal degree in co-relation 59538. Up to 3213 conditions per place. [2021-03-11 06:14:15,018 INFO L132 encePairwiseOnDemand]: 41/53 looper letters, 537 selfloop transitions, 163 changer transitions 10/766 dead transitions. [2021-03-11 06:14:15,018 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 766 transitions, 20191 flow [2021-03-11 06:14:15,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-03-11 06:14:15,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-03-11 06:14:15,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 482 transitions. [2021-03-11 06:14:15,019 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7578616352201258 [2021-03-11 06:14:15,019 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 482 transitions. [2021-03-11 06:14:15,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 482 transitions. [2021-03-11 06:14:15,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:14:15,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 482 transitions. [2021-03-11 06:14:15,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 40.166666666666664) internal successors, (482), 12 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:15,020 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 53.0) internal successors, (689), 13 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:15,021 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 53.0) internal successors, (689), 13 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:15,021 INFO L185 Difference]: Start difference. First operand has 395 places, 752 transitions, 18606 flow. Second operand 12 states and 482 transitions. [2021-03-11 06:14:15,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 766 transitions, 20191 flow [2021-03-11 06:14:16,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 766 transitions, 20017 flow, removed 75 selfloop flow, removed 2 redundant places. [2021-03-11 06:14:16,466 INFO L241 Difference]: Finished difference. Result has 406 places, 722 transitions, 17891 flow [2021-03-11 06:14:16,467 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=17682, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=726, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=563, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=17891, PETRI_PLACES=406, PETRI_TRANSITIONS=722} [2021-03-11 06:14:16,467 INFO L335 CegarLoopForPetriNet]: 58 programPoint places, 348 predicate places. [2021-03-11 06:14:16,467 INFO L480 AbstractCegarLoop]: Abstraction has has 406 places, 722 transitions, 17891 flow [2021-03-11 06:14:16,467 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 34.9) internal successors, (349), 10 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:16,467 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:14:16,467 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:14:16,467 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-03-11 06:14:16,467 INFO L428 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 06:14:16,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:14:16,467 INFO L82 PathProgramCache]: Analyzing trace with hash -945667578, now seen corresponding path program 33 times [2021-03-11 06:14:16,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:14:16,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913342317] [2021-03-11 06:14:16,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:14:16,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:14:16,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:16,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-11 06:14:16,491 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:16,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-11 06:14:16,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:16,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 06:14:16,500 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:16,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:14:16,507 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:16,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:14:16,513 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:16,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 06:14:16,519 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:16,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-11 06:14:16,531 INFO L142 QuantifierPusher]: treesize reduction 29, result has 35.6 percent of original size [2021-03-11 06:14:16,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-11 06:14:16,541 INFO L142 QuantifierPusher]: treesize reduction 7, result has 72.0 percent of original size [2021-03-11 06:14:16,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-11 06:14:16,555 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-11 06:14:16,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:14:16,562 INFO L142 QuantifierPusher]: treesize reduction 4, result has 69.2 percent of original size [2021-03-11 06:14:16,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 06:14:16,571 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:16,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:14:16,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 06:14:16,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913342317] [2021-03-11 06:14:16,571 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:14:16,572 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-03-11 06:14:16,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773072213] [2021-03-11 06:14:16,572 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-11 06:14:16,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:14:16,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-11 06:14:16,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-03-11 06:14:16,572 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-03-11 06:14:16,573 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 722 transitions, 17891 flow. Second operand has 12 states, 12 states have (on average 34.583333333333336) internal successors, (415), 12 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:16,573 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:14:16,573 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-03-11 06:14:16,573 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:14:18,706 INFO L129 PetriNetUnfolder]: 1733/6655 cut-off events. [2021-03-11 06:14:18,706 INFO L130 PetriNetUnfolder]: For 262155/263165 co-relation queries the response was YES. [2021-03-11 06:14:18,776 INFO L84 FinitePrefix]: Finished finitePrefix Result has 57613 conditions, 6655 events. 1733/6655 cut-off events. For 262155/263165 co-relation queries the response was YES. Maximal size of possible extension queue 491. Compared 76502 event pairs, 579 based on Foata normal form. 321/6768 useless extension candidates. Maximal degree in co-relation 57471. Up to 2680 conditions per place. [2021-03-11 06:14:18,798 INFO L132 encePairwiseOnDemand]: 38/53 looper letters, 482 selfloop transitions, 217 changer transitions 19/771 dead transitions. [2021-03-11 06:14:18,799 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 771 transitions, 20575 flow [2021-03-11 06:14:18,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-03-11 06:14:18,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-03-11 06:14:18,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 602 transitions. [2021-03-11 06:14:18,799 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7572327044025158 [2021-03-11 06:14:18,800 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 602 transitions. [2021-03-11 06:14:18,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 602 transitions. [2021-03-11 06:14:18,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:14:18,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 602 transitions. [2021-03-11 06:14:18,800 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 40.13333333333333) internal successors, (602), 15 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:18,801 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 53.0) internal successors, (848), 16 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:18,801 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 53.0) internal successors, (848), 16 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:18,801 INFO L185 Difference]: Start difference. First operand has 406 places, 722 transitions, 17891 flow. Second operand 15 states and 602 transitions. [2021-03-11 06:14:18,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 771 transitions, 20575 flow [2021-03-11 06:14:20,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 771 transitions, 20118 flow, removed 30 selfloop flow, removed 14 redundant places. [2021-03-11 06:14:20,155 INFO L241 Difference]: Finished difference. Result has 411 places, 701 transitions, 17593 flow [2021-03-11 06:14:20,155 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=16907, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=699, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=205, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=482, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=17593, PETRI_PLACES=411, PETRI_TRANSITIONS=701} [2021-03-11 06:14:20,156 INFO L335 CegarLoopForPetriNet]: 58 programPoint places, 353 predicate places. [2021-03-11 06:14:20,156 INFO L480 AbstractCegarLoop]: Abstraction has has 411 places, 701 transitions, 17593 flow [2021-03-11 06:14:20,156 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 34.583333333333336) internal successors, (415), 12 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:20,156 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:14:20,156 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:14:20,156 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-03-11 06:14:20,156 INFO L428 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 06:14:20,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:14:20,156 INFO L82 PathProgramCache]: Analyzing trace with hash 1557406938, now seen corresponding path program 34 times [2021-03-11 06:14:20,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:14:20,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850814491] [2021-03-11 06:14:20,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:14:20,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:14:20,300 INFO L142 QuantifierPusher]: treesize reduction 16, result has 56.8 percent of original size [2021-03-11 06:14:20,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 06:14:20,312 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:20,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 06:14:20,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:20,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:14:20,316 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:20,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:14:20,318 INFO L142 QuantifierPusher]: treesize reduction 7, result has 58.8 percent of original size [2021-03-11 06:14:20,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:14:20,320 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:20,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-11 06:14:20,326 INFO L142 QuantifierPusher]: treesize reduction 7, result has 63.2 percent of original size [2021-03-11 06:14:20,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-11 06:14:20,332 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:20,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 06:14:20,339 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:20,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 06:14:20,345 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:20,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 06:14:20,353 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:20,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:14:20,354 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 06:14:20,354 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850814491] [2021-03-11 06:14:20,354 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:14:20,354 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 06:14:20,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27434471] [2021-03-11 06:14:20,354 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 06:14:20,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:14:20,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 06:14:20,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-11 06:14:20,355 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-03-11 06:14:20,355 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 701 transitions, 17593 flow. Second operand has 8 states, 8 states have (on average 35.375) internal successors, (283), 8 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:20,355 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:14:20,355 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-03-11 06:14:20,355 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:14:22,220 INFO L129 PetriNetUnfolder]: 1686/6458 cut-off events. [2021-03-11 06:14:22,221 INFO L130 PetriNetUnfolder]: For 257801/258733 co-relation queries the response was YES. [2021-03-11 06:14:22,297 INFO L84 FinitePrefix]: Finished finitePrefix Result has 56588 conditions, 6458 events. 1686/6458 cut-off events. For 257801/258733 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 73795 event pairs, 640 based on Foata normal form. 151/6402 useless extension candidates. Maximal degree in co-relation 56442. Up to 3264 conditions per place. [2021-03-11 06:14:22,319 INFO L132 encePairwiseOnDemand]: 42/53 looper letters, 625 selfloop transitions, 36 changer transitions 11/725 dead transitions. [2021-03-11 06:14:22,319 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 725 transitions, 19536 flow [2021-03-11 06:14:22,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 06:14:22,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-11 06:14:22,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 328 transitions. [2021-03-11 06:14:22,320 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7735849056603774 [2021-03-11 06:14:22,320 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 328 transitions. [2021-03-11 06:14:22,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 328 transitions. [2021-03-11 06:14:22,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:14:22,321 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 328 transitions. [2021-03-11 06:14:22,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 41.0) internal successors, (328), 8 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:22,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 53.0) internal successors, (477), 9 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:22,321 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 53.0) internal successors, (477), 9 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:22,321 INFO L185 Difference]: Start difference. First operand has 411 places, 701 transitions, 17593 flow. Second operand 8 states and 328 transitions. [2021-03-11 06:14:22,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 725 transitions, 19536 flow [2021-03-11 06:14:23,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 725 transitions, 19219 flow, removed 26 selfloop flow, removed 10 redundant places. [2021-03-11 06:14:23,880 INFO L241 Difference]: Finished difference. Result has 411 places, 701 transitions, 17344 flow [2021-03-11 06:14:23,880 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=17276, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=701, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=666, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17344, PETRI_PLACES=411, PETRI_TRANSITIONS=701} [2021-03-11 06:14:23,880 INFO L335 CegarLoopForPetriNet]: 58 programPoint places, 353 predicate places. [2021-03-11 06:14:23,880 INFO L480 AbstractCegarLoop]: Abstraction has has 411 places, 701 transitions, 17344 flow [2021-03-11 06:14:23,880 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 35.375) internal successors, (283), 8 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:23,880 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:14:23,880 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:14:23,880 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-03-11 06:14:23,880 INFO L428 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 06:14:23,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:14:23,881 INFO L82 PathProgramCache]: Analyzing trace with hash 867548394, now seen corresponding path program 35 times [2021-03-11 06:14:23,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:14:23,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352893647] [2021-03-11 06:14:23,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:14:23,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:14:23,897 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:23,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:14:23,902 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:23,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:14:23,907 INFO L142 QuantifierPusher]: treesize reduction 20, result has 51.2 percent of original size [2021-03-11 06:14:23,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 06:14:23,917 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:23,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 06:14:23,926 INFO L142 QuantifierPusher]: treesize reduction 27, result has 38.6 percent of original size [2021-03-11 06:14:23,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 06:14:23,927 INFO L142 QuantifierPusher]: treesize reduction 10, result has 67.7 percent of original size [2021-03-11 06:14:23,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 06:14:23,940 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 06:14:23,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 06:14:23,944 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 06:14:23,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 06:14:23,959 INFO L142 QuantifierPusher]: treesize reduction 12, result has 60.0 percent of original size [2021-03-11 06:14:23,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-11 06:14:23,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:23,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:14:23,975 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 06:14:23,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352893647] [2021-03-11 06:14:23,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:14:23,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 06:14:23,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243633392] [2021-03-11 06:14:23,975 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 06:14:23,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:14:23,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 06:14:23,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-03-11 06:14:23,976 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-03-11 06:14:23,976 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 701 transitions, 17344 flow. Second operand has 9 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 06:14:23,976 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:14:23,976 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-03-11 06:14:23,976 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:14:25,880 INFO L129 PetriNetUnfolder]: 1517/5907 cut-off events. [2021-03-11 06:14:25,881 INFO L130 PetriNetUnfolder]: For 235662/236444 co-relation queries the response was YES. [2021-03-11 06:14:25,953 INFO L84 FinitePrefix]: Finished finitePrefix Result has 51633 conditions, 5907 events. 1517/5907 cut-off events. For 235662/236444 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 67874 event pairs, 431 based on Foata normal form. 314/6022 useless extension candidates. Maximal degree in co-relation 51487. Up to 1115 conditions per place. [2021-03-11 06:14:25,966 INFO L132 encePairwiseOnDemand]: 39/53 looper letters, 234 selfloop transitions, 127 changer transitions 375/781 dead transitions. [2021-03-11 06:14:25,966 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 781 transitions, 20689 flow [2021-03-11 06:14:25,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-03-11 06:14:25,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-03-11 06:14:25,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 578 transitions. [2021-03-11 06:14:25,967 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7789757412398922 [2021-03-11 06:14:25,968 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 578 transitions. [2021-03-11 06:14:25,968 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 578 transitions. [2021-03-11 06:14:25,968 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:14:25,968 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 578 transitions. [2021-03-11 06:14:25,968 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 41.285714285714285) internal successors, (578), 14 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:25,969 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 53.0) internal successors, (795), 15 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:25,969 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 53.0) internal successors, (795), 15 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:25,969 INFO L185 Difference]: Start difference. First operand has 411 places, 701 transitions, 17344 flow. Second operand 14 states and 578 transitions. [2021-03-11 06:14:25,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 781 transitions, 20689 flow [2021-03-11 06:14:27,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 781 transitions, 20357 flow, removed 63 selfloop flow, removed 10 redundant places. [2021-03-11 06:14:27,397 INFO L241 Difference]: Finished difference. Result has 413 places, 377 transitions, 9392 flow [2021-03-11 06:14:27,397 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=15731, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=653, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=527, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=9392, PETRI_PLACES=413, PETRI_TRANSITIONS=377} [2021-03-11 06:14:27,398 INFO L335 CegarLoopForPetriNet]: 58 programPoint places, 355 predicate places. [2021-03-11 06:14:27,398 INFO L480 AbstractCegarLoop]: Abstraction has has 413 places, 377 transitions, 9392 flow [2021-03-11 06:14:27,398 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 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 06:14:27,398 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:14:27,398 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:14:27,398 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-03-11 06:14:27,398 INFO L428 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 06:14:27,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:14:27,398 INFO L82 PathProgramCache]: Analyzing trace with hash 1180035222, now seen corresponding path program 36 times [2021-03-11 06:14:27,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:14:27,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950882841] [2021-03-11 06:14:27,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:14:27,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:14:27,414 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:27,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-11 06:14:27,425 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:27,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 06:14:27,434 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:27,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 06:14:27,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:27,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 06:14:27,436 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:27,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 06:14:27,446 INFO L142 QuantifierPusher]: treesize reduction 7, result has 68.2 percent of original size [2021-03-11 06:14:27,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 06:14:27,456 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:27,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-11 06:14:27,475 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:27,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-11 06:14:27,486 INFO L142 QuantifierPusher]: treesize reduction 7, result has 70.8 percent of original size [2021-03-11 06:14:27,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 06:14:27,497 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:27,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 06:14:27,510 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:27,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 06:14:27,520 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:27,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:14:27,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 06:14:27,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950882841] [2021-03-11 06:14:27,520 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:14:27,520 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-11 06:14:27,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945237129] [2021-03-11 06:14:27,521 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-11 06:14:27,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:14:27,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-11 06:14:27,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-03-11 06:14:27,523 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-03-11 06:14:27,523 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 377 transitions, 9392 flow. Second operand has 11 states, 11 states have (on average 34.72727272727273) internal successors, (382), 11 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:27,523 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:14:27,523 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-03-11 06:14:27,523 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:14:28,359 INFO L129 PetriNetUnfolder]: 784/3113 cut-off events. [2021-03-11 06:14:28,359 INFO L130 PetriNetUnfolder]: For 130429/130759 co-relation queries the response was YES. [2021-03-11 06:14:28,405 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27916 conditions, 3113 events. 784/3113 cut-off events. For 130429/130759 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 30709 event pairs, 356 based on Foata normal form. 58/3042 useless extension candidates. Maximal degree in co-relation 27768. Up to 1490 conditions per place. [2021-03-11 06:14:28,416 INFO L132 encePairwiseOnDemand]: 41/53 looper letters, 320 selfloop transitions, 35 changer transitions 2/402 dead transitions. [2021-03-11 06:14:28,416 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 402 transitions, 10774 flow [2021-03-11 06:14:28,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-11 06:14:28,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-11 06:14:28,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 397 transitions. [2021-03-11 06:14:28,417 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7490566037735849 [2021-03-11 06:14:28,417 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 397 transitions. [2021-03-11 06:14:28,417 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 397 transitions. [2021-03-11 06:14:28,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:14:28,417 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 397 transitions. [2021-03-11 06:14:28,418 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 39.7) internal successors, (397), 10 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:28,418 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 53.0) internal successors, (583), 11 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:28,418 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 53.0) internal successors, (583), 11 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:28,418 INFO L185 Difference]: Start difference. First operand has 413 places, 377 transitions, 9392 flow. Second operand 10 states and 397 transitions. [2021-03-11 06:14:28,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 402 transitions, 10774 flow [2021-03-11 06:14:29,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 402 transitions, 9546 flow, removed 155 selfloop flow, removed 57 redundant places. [2021-03-11 06:14:29,078 INFO L241 Difference]: Finished difference. Result has 342 places, 382 transitions, 8505 flow [2021-03-11 06:14:29,078 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=8281, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=343, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8505, PETRI_PLACES=342, PETRI_TRANSITIONS=382} [2021-03-11 06:14:29,078 INFO L335 CegarLoopForPetriNet]: 58 programPoint places, 284 predicate places. [2021-03-11 06:14:29,078 INFO L480 AbstractCegarLoop]: Abstraction has has 342 places, 382 transitions, 8505 flow [2021-03-11 06:14:29,078 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 34.72727272727273) internal successors, (382), 11 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:29,078 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:14:29,078 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:14:29,078 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-03-11 06:14:29,078 INFO L428 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 06:14:29,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:14:29,079 INFO L82 PathProgramCache]: Analyzing trace with hash -871382368, now seen corresponding path program 37 times [2021-03-11 06:14:29,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:14:29,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101158013] [2021-03-11 06:14:29,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:14:29,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:14:29,090 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:29,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:14:29,095 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:29,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:14:29,099 INFO L142 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size [2021-03-11 06:14:29,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 06:14:29,102 INFO L142 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size [2021-03-11 06:14:29,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:14:29,102 INFO L142 QuantifierPusher]: treesize reduction 6, result has 60.0 percent of original size [2021-03-11 06:14:29,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 06:14:29,107 INFO L142 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-03-11 06:14:29,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:14:29,112 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:29,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:14:29,117 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:29,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:14:29,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:29,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:14:29,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 06:14:29,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101158013] [2021-03-11 06:14:29,127 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:14:29,127 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 06:14:29,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372258470] [2021-03-11 06:14:29,128 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 06:14:29,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:14:29,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 06:14:29,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-03-11 06:14:29,128 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-03-11 06:14:29,128 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 382 transitions, 8505 flow. Second operand has 8 states, 8 states have (on average 35.375) internal successors, (283), 8 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:29,128 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:14:29,129 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-03-11 06:14:29,129 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:14:29,861 INFO L129 PetriNetUnfolder]: 799/3225 cut-off events. [2021-03-11 06:14:29,862 INFO L130 PetriNetUnfolder]: For 97840/98201 co-relation queries the response was YES. [2021-03-11 06:14:29,895 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25723 conditions, 3225 events. 799/3225 cut-off events. For 97840/98201 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 32151 event pairs, 349 based on Foata normal form. 76/3165 useless extension candidates. Maximal degree in co-relation 25604. Up to 1582 conditions per place. [2021-03-11 06:14:29,904 INFO L132 encePairwiseOnDemand]: 43/53 looper letters, 318 selfloop transitions, 11 changer transitions 54/428 dead transitions. [2021-03-11 06:14:29,904 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 428 transitions, 10210 flow [2021-03-11 06:14:29,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 06:14:29,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 06:14:29,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 357 transitions. [2021-03-11 06:14:29,905 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7484276729559748 [2021-03-11 06:14:29,905 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 357 transitions. [2021-03-11 06:14:29,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 357 transitions. [2021-03-11 06:14:29,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:14:29,905 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 357 transitions. [2021-03-11 06:14:29,905 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 39.666666666666664) internal successors, (357), 9 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:29,906 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 53.0) internal successors, (530), 10 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 06:14:29,906 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 53.0) internal successors, (530), 10 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 06:14:29,906 INFO L185 Difference]: Start difference. First operand has 342 places, 382 transitions, 8505 flow. Second operand 9 states and 357 transitions. [2021-03-11 06:14:29,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 428 transitions, 10210 flow [2021-03-11 06:14:30,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 428 transitions, 10067 flow, removed 29 selfloop flow, removed 7 redundant places. [2021-03-11 06:14:30,322 INFO L241 Difference]: Finished difference. Result has 350 places, 365 transitions, 7991 flow [2021-03-11 06:14:30,322 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=8318, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7991, PETRI_PLACES=350, PETRI_TRANSITIONS=365} [2021-03-11 06:14:30,322 INFO L335 CegarLoopForPetriNet]: 58 programPoint places, 292 predicate places. [2021-03-11 06:14:30,322 INFO L480 AbstractCegarLoop]: Abstraction has has 350 places, 365 transitions, 7991 flow [2021-03-11 06:14:30,322 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 35.375) internal successors, (283), 8 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:30,322 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:14:30,323 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:14:30,323 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-03-11 06:14:30,323 INFO L428 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 06:14:30,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:14:30,323 INFO L82 PathProgramCache]: Analyzing trace with hash 1932109640, now seen corresponding path program 38 times [2021-03-11 06:14:30,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:14:30,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320132451] [2021-03-11 06:14:30,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:14:30,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:14:30,336 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:30,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 06:14:30,342 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:30,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 06:14:30,345 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:30,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 06:14:30,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:30,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:14:30,353 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:30,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-11 06:14:30,360 INFO L142 QuantifierPusher]: treesize reduction 7, result has 63.2 percent of original size [2021-03-11 06:14:30,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-11 06:14:30,367 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:30,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 06:14:30,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:30,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 06:14:30,382 INFO L142 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-03-11 06:14:30,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:14:30,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:30,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:14:30,395 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:30,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:14:30,403 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:30,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:14:30,404 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 06:14:30,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320132451] [2021-03-11 06:14:30,404 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:14:30,404 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-11 06:14:30,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038233094] [2021-03-11 06:14:30,404 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-11 06:14:30,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:14:30,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-11 06:14:30,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-03-11 06:14:30,405 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-03-11 06:14:30,405 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 365 transitions, 7991 flow. Second operand has 11 states, 11 states have (on average 34.72727272727273) internal successors, (382), 11 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:30,405 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:14:30,405 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-03-11 06:14:30,405 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:14:31,195 INFO L129 PetriNetUnfolder]: 729/2923 cut-off events. [2021-03-11 06:14:31,195 INFO L130 PetriNetUnfolder]: For 87785/88063 co-relation queries the response was YES. [2021-03-11 06:14:31,227 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23455 conditions, 2923 events. 729/2923 cut-off events. For 87785/88063 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 28379 event pairs, 327 based on Foata normal form. 47/2852 useless extension candidates. Maximal degree in co-relation 23330. Up to 1364 conditions per place. [2021-03-11 06:14:31,235 INFO L132 encePairwiseOnDemand]: 43/53 looper letters, 296 selfloop transitions, 22 changer transitions 13/376 dead transitions. [2021-03-11 06:14:31,236 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 376 transitions, 8879 flow [2021-03-11 06:14:31,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 06:14:31,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-11 06:14:31,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 318 transitions. [2021-03-11 06:14:31,236 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.75 [2021-03-11 06:14:31,236 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 318 transitions. [2021-03-11 06:14:31,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 318 transitions. [2021-03-11 06:14:31,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:14:31,237 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 318 transitions. [2021-03-11 06:14:31,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 39.75) internal successors, (318), 8 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:31,237 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 53.0) internal successors, (477), 9 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:31,237 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 53.0) internal successors, (477), 9 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:31,237 INFO L185 Difference]: Start difference. First operand has 350 places, 365 transitions, 7991 flow. Second operand 8 states and 318 transitions. [2021-03-11 06:14:31,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 376 transitions, 8879 flow [2021-03-11 06:14:31,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 376 transitions, 8765 flow, removed 27 selfloop flow, removed 14 redundant places. [2021-03-11 06:14:31,604 INFO L241 Difference]: Finished difference. Result has 336 places, 354 transitions, 7701 flow [2021-03-11 06:14:31,604 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=7774, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7701, PETRI_PLACES=336, PETRI_TRANSITIONS=354} [2021-03-11 06:14:31,604 INFO L335 CegarLoopForPetriNet]: 58 programPoint places, 278 predicate places. [2021-03-11 06:14:31,604 INFO L480 AbstractCegarLoop]: Abstraction has has 336 places, 354 transitions, 7701 flow [2021-03-11 06:14:31,605 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 34.72727272727273) internal successors, (382), 11 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:31,605 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:14:31,605 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:14:31,605 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-03-11 06:14:31,605 INFO L428 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 06:14:31,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:14:31,605 INFO L82 PathProgramCache]: Analyzing trace with hash 1645192310, now seen corresponding path program 39 times [2021-03-11 06:14:31,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:14:31,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742645829] [2021-03-11 06:14:31,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:14:31,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:14:31,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:31,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 06:14:31,620 INFO L142 QuantifierPusher]: treesize reduction 4, result has 73.3 percent of original size [2021-03-11 06:14:31,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-11 06:14:31,622 INFO L142 QuantifierPusher]: treesize reduction 29, result has 34.1 percent of original size [2021-03-11 06:14:31,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 06:14:31,630 INFO L142 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size [2021-03-11 06:14:31,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 06:14:31,639 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-03-11 06:14:31,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 06:14:31,648 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:31,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 06:14:31,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:31,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:14:31,663 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 06:14:31,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742645829] [2021-03-11 06:14:31,663 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:14:31,663 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 06:14:31,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870716855] [2021-03-11 06:14:31,664 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 06:14:31,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:14:31,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 06:14:31,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 06:14:31,666 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 53 [2021-03-11 06:14:31,666 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 354 transitions, 7701 flow. Second operand has 7 states, 7 states have (on average 37.42857142857143) internal successors, (262), 7 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:31,666 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:14:31,666 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 53 [2021-03-11 06:14:31,666 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:14:32,328 INFO L129 PetriNetUnfolder]: 718/2896 cut-off events. [2021-03-11 06:14:32,328 INFO L130 PetriNetUnfolder]: For 86300/86574 co-relation queries the response was YES. [2021-03-11 06:14:32,351 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22767 conditions, 2896 events. 718/2896 cut-off events. For 86300/86574 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 28230 event pairs, 229 based on Foata normal form. 70/2849 useless extension candidates. Maximal degree in co-relation 22651. Up to 758 conditions per place. [2021-03-11 06:14:32,359 INFO L132 encePairwiseOnDemand]: 45/53 looper letters, 201 selfloop transitions, 70 changer transitions 36/397 dead transitions. [2021-03-11 06:14:32,359 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 397 transitions, 9230 flow [2021-03-11 06:14:32,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 06:14:32,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 06:14:32,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 301 transitions. [2021-03-11 06:14:32,363 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8113207547169812 [2021-03-11 06:14:32,363 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 301 transitions. [2021-03-11 06:14:32,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 301 transitions. [2021-03-11 06:14:32,363 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:14:32,363 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 301 transitions. [2021-03-11 06:14:32,364 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.0) internal successors, (301), 7 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:32,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:32,364 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:32,364 INFO L185 Difference]: Start difference. First operand has 336 places, 354 transitions, 7701 flow. Second operand 7 states and 301 transitions. [2021-03-11 06:14:32,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 397 transitions, 9230 flow [2021-03-11 06:14:32,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 397 transitions, 9090 flow, removed 31 selfloop flow, removed 14 redundant places. [2021-03-11 06:14:32,665 INFO L241 Difference]: Finished difference. Result has 326 places, 346 transitions, 7778 flow [2021-03-11 06:14:32,665 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=7600, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7778, PETRI_PLACES=326, PETRI_TRANSITIONS=346} [2021-03-11 06:14:32,665 INFO L335 CegarLoopForPetriNet]: 58 programPoint places, 268 predicate places. [2021-03-11 06:14:32,665 INFO L480 AbstractCegarLoop]: Abstraction has has 326 places, 346 transitions, 7778 flow [2021-03-11 06:14:32,666 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 37.42857142857143) internal successors, (262), 7 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:32,666 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:14:32,666 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:14:32,666 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-03-11 06:14:32,666 INFO L428 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 06:14:32,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:14:32,666 INFO L82 PathProgramCache]: Analyzing trace with hash 92994780, now seen corresponding path program 40 times [2021-03-11 06:14:32,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:14:32,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320540970] [2021-03-11 06:14:32,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:14:32,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:14:32,678 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:32,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:14:32,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:32,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:14:32,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:32,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:14:32,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:32,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-11 06:14:32,689 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:32,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-11 06:14:32,695 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:32,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-11 06:14:32,695 INFO L142 QuantifierPusher]: treesize reduction 21, result has 32.3 percent of original size [2021-03-11 06:14:32,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:14:32,702 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:32,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:14:32,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:32,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-11 06:14:32,716 INFO L142 QuantifierPusher]: treesize reduction 9, result has 57.1 percent of original size [2021-03-11 06:14:32,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-11 06:14:32,724 INFO L142 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size [2021-03-11 06:14:32,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:14:32,725 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:32,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:14:32,725 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 06:14:32,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320540970] [2021-03-11 06:14:32,725 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:14:32,725 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 06:14:32,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962438222] [2021-03-11 06:14:32,725 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 06:14:32,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:14:32,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 06:14:32,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-03-11 06:14:32,726 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-03-11 06:14:32,726 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 346 transitions, 7778 flow. Second operand has 9 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 06:14:32,726 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:14:32,726 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-03-11 06:14:32,726 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:14:33,316 INFO L129 PetriNetUnfolder]: 650/2628 cut-off events. [2021-03-11 06:14:33,316 INFO L130 PetriNetUnfolder]: For 79629/79910 co-relation queries the response was YES. [2021-03-11 06:14:33,342 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21133 conditions, 2628 events. 650/2628 cut-off events. For 79629/79910 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 25042 event pairs, 298 based on Foata normal form. 46/2568 useless extension candidates. Maximal degree in co-relation 21018. Up to 1262 conditions per place. [2021-03-11 06:14:33,351 INFO L132 encePairwiseOnDemand]: 44/53 looper letters, 279 selfloop transitions, 18 changer transitions 22/364 dead transitions. [2021-03-11 06:14:33,351 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 364 transitions, 8764 flow [2021-03-11 06:14:33,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 06:14:33,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 06:14:33,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 361 transitions. [2021-03-11 06:14:33,352 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7568134171907757 [2021-03-11 06:14:33,352 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 361 transitions. [2021-03-11 06:14:33,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 361 transitions. [2021-03-11 06:14:33,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:14:33,352 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 361 transitions. [2021-03-11 06:14:33,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 40.111111111111114) internal successors, (361), 9 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:33,353 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 53.0) internal successors, (530), 10 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 06:14:33,353 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 53.0) internal successors, (530), 10 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 06:14:33,353 INFO L185 Difference]: Start difference. First operand has 326 places, 346 transitions, 7778 flow. Second operand 9 states and 361 transitions. [2021-03-11 06:14:33,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 364 transitions, 8764 flow [2021-03-11 06:14:33,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 364 transitions, 8661 flow, removed 14 selfloop flow, removed 8 redundant places. [2021-03-11 06:14:33,673 INFO L241 Difference]: Finished difference. Result has 326 places, 333 transitions, 7445 flow [2021-03-11 06:14:33,673 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=7617, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7445, PETRI_PLACES=326, PETRI_TRANSITIONS=333} [2021-03-11 06:14:33,673 INFO L335 CegarLoopForPetriNet]: 58 programPoint places, 268 predicate places. [2021-03-11 06:14:33,673 INFO L480 AbstractCegarLoop]: Abstraction has has 326 places, 333 transitions, 7445 flow [2021-03-11 06:14:33,673 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 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 06:14:33,674 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:14:33,674 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:14:33,674 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-03-11 06:14:33,674 INFO L428 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 06:14:33,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:14:33,674 INFO L82 PathProgramCache]: Analyzing trace with hash 1719926556, now seen corresponding path program 41 times [2021-03-11 06:14:33,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:14:33,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221318767] [2021-03-11 06:14:33,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:14:33,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:14:33,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:33,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:14:33,689 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:33,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:14:33,690 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:33,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:14:33,690 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:33,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-11 06:14:33,696 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:33,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-11 06:14:33,702 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:33,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-11 06:14:33,703 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:33,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-11 06:14:33,709 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:33,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 06:14:33,715 INFO L142 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-03-11 06:14:33,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:14:33,722 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:33,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 06:14:33,729 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:33,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:14:33,729 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 06:14:33,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221318767] [2021-03-11 06:14:33,730 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:14:33,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 06:14:33,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980452089] [2021-03-11 06:14:33,730 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 06:14:33,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:14:33,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 06:14:33,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-03-11 06:14:33,730 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-03-11 06:14:33,731 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 333 transitions, 7445 flow. Second operand has 9 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 06:14:33,731 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:14:33,731 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-03-11 06:14:33,731 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:14:34,295 INFO L129 PetriNetUnfolder]: 616/2456 cut-off events. [2021-03-11 06:14:34,295 INFO L130 PetriNetUnfolder]: For 73662/73934 co-relation queries the response was YES. [2021-03-11 06:14:34,317 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19861 conditions, 2456 events. 616/2456 cut-off events. For 73662/73934 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 22933 event pairs, 285 based on Foata normal form. 49/2401 useless extension candidates. Maximal degree in co-relation 19749. Up to 1197 conditions per place. [2021-03-11 06:14:34,324 INFO L132 encePairwiseOnDemand]: 43/53 looper letters, 274 selfloop transitions, 23 changer transitions 13/355 dead transitions. [2021-03-11 06:14:34,324 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 355 transitions, 8506 flow [2021-03-11 06:14:34,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 06:14:34,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 06:14:34,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 364 transitions. [2021-03-11 06:14:34,325 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7631027253668763 [2021-03-11 06:14:34,325 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 364 transitions. [2021-03-11 06:14:34,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 364 transitions. [2021-03-11 06:14:34,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:14:34,325 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 364 transitions. [2021-03-11 06:14:34,326 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 06:14:34,326 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 53.0) internal successors, (530), 10 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 06:14:34,326 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 53.0) internal successors, (530), 10 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 06:14:34,326 INFO L185 Difference]: Start difference. First operand has 326 places, 333 transitions, 7445 flow. Second operand 9 states and 364 transitions. [2021-03-11 06:14:34,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 355 transitions, 8506 flow [2021-03-11 06:14:34,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 355 transitions, 8233 flow, removed 34 selfloop flow, removed 10 redundant places. [2021-03-11 06:14:34,583 INFO L241 Difference]: Finished difference. Result has 321 places, 326 transitions, 7073 flow [2021-03-11 06:14:34,583 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=7070, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7073, PETRI_PLACES=321, PETRI_TRANSITIONS=326} [2021-03-11 06:14:34,584 INFO L335 CegarLoopForPetriNet]: 58 programPoint places, 263 predicate places. [2021-03-11 06:14:34,584 INFO L480 AbstractCegarLoop]: Abstraction has has 321 places, 326 transitions, 7073 flow [2021-03-11 06:14:34,584 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 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 06:14:34,584 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:14:34,584 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:14:34,584 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-03-11 06:14:34,584 INFO L428 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 06:14:34,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:14:34,584 INFO L82 PathProgramCache]: Analyzing trace with hash 1459022992, now seen corresponding path program 42 times [2021-03-11 06:14:34,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:14:34,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460032356] [2021-03-11 06:14:34,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:14:34,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:14:34,599 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:34,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:14:34,607 INFO L142 QuantifierPusher]: treesize reduction 24, result has 46.7 percent of original size [2021-03-11 06:14:34,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 06:14:34,618 INFO L142 QuantifierPusher]: treesize reduction 23, result has 39.5 percent of original size [2021-03-11 06:14:34,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 06:14:34,630 INFO L142 QuantifierPusher]: treesize reduction 8, result has 65.2 percent of original size [2021-03-11 06:14:34,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 06:14:34,641 INFO L142 QuantifierPusher]: treesize reduction 27, result has 28.9 percent of original size [2021-03-11 06:14:34,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-11 06:14:34,651 INFO L142 QuantifierPusher]: treesize reduction 13, result has 50.0 percent of original size [2021-03-11 06:14:34,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 06:14:34,661 INFO L142 QuantifierPusher]: treesize reduction 11, result has 50.0 percent of original size [2021-03-11 06:14:34,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-11 06:14:34,670 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:34,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:14:34,670 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 06:14:34,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460032356] [2021-03-11 06:14:34,670 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:14:34,670 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 06:14:34,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895821953] [2021-03-11 06:14:34,671 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 06:14:34,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:14:34,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 06:14:34,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-03-11 06:14:34,671 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-03-11 06:14:34,671 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 326 transitions, 7073 flow. Second operand has 9 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 06:14:34,671 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:14:34,671 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-03-11 06:14:34,672 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:14:35,301 INFO L129 PetriNetUnfolder]: 654/2614 cut-off events. [2021-03-11 06:14:35,301 INFO L130 PetriNetUnfolder]: For 74060/74350 co-relation queries the response was YES. [2021-03-11 06:14:35,325 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20440 conditions, 2614 events. 654/2614 cut-off events. For 74060/74350 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 24648 event pairs, 286 based on Foata normal form. 64/2574 useless extension candidates. Maximal degree in co-relation 20333. Up to 772 conditions per place. [2021-03-11 06:14:35,333 INFO L132 encePairwiseOnDemand]: 41/53 looper letters, 204 selfloop transitions, 130 changer transitions 13/392 dead transitions. [2021-03-11 06:14:35,333 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 392 transitions, 9140 flow [2021-03-11 06:14:35,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-11 06:14:35,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-11 06:14:35,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 409 transitions. [2021-03-11 06:14:35,334 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7716981132075472 [2021-03-11 06:14:35,334 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 409 transitions. [2021-03-11 06:14:35,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 409 transitions. [2021-03-11 06:14:35,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:14:35,334 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 409 transitions. [2021-03-11 06:14:35,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 40.9) internal successors, (409), 10 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:35,335 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 53.0) internal successors, (583), 11 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:35,335 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 53.0) internal successors, (583), 11 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:35,335 INFO L185 Difference]: Start difference. First operand has 321 places, 326 transitions, 7073 flow. Second operand 10 states and 409 transitions. [2021-03-11 06:14:35,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 392 transitions, 9140 flow [2021-03-11 06:14:35,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 392 transitions, 9014 flow, removed 13 selfloop flow, removed 7 redundant places. [2021-03-11 06:14:35,601 INFO L241 Difference]: Finished difference. Result has 327 places, 342 transitions, 7681 flow [2021-03-11 06:14:35,601 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=6965, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7681, PETRI_PLACES=327, PETRI_TRANSITIONS=342} [2021-03-11 06:14:35,601 INFO L335 CegarLoopForPetriNet]: 58 programPoint places, 269 predicate places. [2021-03-11 06:14:35,602 INFO L480 AbstractCegarLoop]: Abstraction has has 327 places, 342 transitions, 7681 flow [2021-03-11 06:14:35,602 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 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 06:14:35,602 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:14:35,602 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:14:35,602 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-03-11 06:14:35,602 INFO L428 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 06:14:35,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:14:35,602 INFO L82 PathProgramCache]: Analyzing trace with hash -1434939558, now seen corresponding path program 43 times [2021-03-11 06:14:35,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:14:35,602 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712726587] [2021-03-11 06:14:35,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:14:35,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:14:35,627 INFO L142 QuantifierPusher]: treesize reduction 27, result has 51.8 percent of original size [2021-03-11 06:14:35,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 06:14:35,641 INFO L142 QuantifierPusher]: treesize reduction 3, result has 84.2 percent of original size [2021-03-11 06:14:35,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-11 06:14:35,644 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:35,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-11 06:14:35,646 INFO L142 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size [2021-03-11 06:14:35,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 06:14:35,652 INFO L142 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size [2021-03-11 06:14:35,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 06:14:35,660 INFO L142 QuantifierPusher]: treesize reduction 36, result has 56.6 percent of original size [2021-03-11 06:14:35,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 06:14:35,684 INFO L142 QuantifierPusher]: treesize reduction 21, result has 41.7 percent of original size [2021-03-11 06:14:35,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 06:14:35,695 INFO L142 QuantifierPusher]: treesize reduction 19, result has 40.6 percent of original size [2021-03-11 06:14:35,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 06:14:35,706 INFO L142 QuantifierPusher]: treesize reduction 11, result has 38.9 percent of original size [2021-03-11 06:14:35,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:14:35,714 INFO L142 QuantifierPusher]: treesize reduction 4, result has 85.2 percent of original size [2021-03-11 06:14:35,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 06:14:35,730 INFO L142 QuantifierPusher]: treesize reduction 6, result has 68.4 percent of original size [2021-03-11 06:14:35,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 06:14:35,742 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-11 06:14:35,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:14:35,751 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:35,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:14:35,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 06:14:35,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712726587] [2021-03-11 06:14:35,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:14:35,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-03-11 06:14:35,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153721631] [2021-03-11 06:14:35,753 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-11 06:14:35,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:14:35,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-11 06:14:35,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-03-11 06:14:35,754 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-03-11 06:14:35,754 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 342 transitions, 7681 flow. Second operand has 12 states, 12 states have (on average 34.583333333333336) internal successors, (415), 12 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:35,754 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:14:35,754 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-03-11 06:14:35,754 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:14:36,384 INFO L129 PetriNetUnfolder]: 662/2669 cut-off events. [2021-03-11 06:14:36,384 INFO L130 PetriNetUnfolder]: For 80264/80570 co-relation queries the response was YES. [2021-03-11 06:14:36,406 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21136 conditions, 2669 events. 662/2669 cut-off events. For 80264/80570 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 25400 event pairs, 321 based on Foata normal form. 42/2598 useless extension candidates. Maximal degree in co-relation 21026. Up to 1386 conditions per place. [2021-03-11 06:14:36,413 INFO L132 encePairwiseOnDemand]: 41/53 looper letters, 289 selfloop transitions, 13 changer transitions 24/371 dead transitions. [2021-03-11 06:14:36,413 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 371 transitions, 8896 flow [2021-03-11 06:14:36,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-11 06:14:36,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-11 06:14:36,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 385 transitions. [2021-03-11 06:14:36,414 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7264150943396226 [2021-03-11 06:14:36,414 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 385 transitions. [2021-03-11 06:14:36,414 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 385 transitions. [2021-03-11 06:14:36,414 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:14:36,414 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 385 transitions. [2021-03-11 06:14:36,414 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 38.5) internal successors, (385), 10 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:36,414 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 53.0) internal successors, (583), 11 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:36,415 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 53.0) internal successors, (583), 11 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:36,415 INFO L185 Difference]: Start difference. First operand has 327 places, 342 transitions, 7681 flow. Second operand 10 states and 385 transitions. [2021-03-11 06:14:36,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 371 transitions, 8896 flow [2021-03-11 06:14:36,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 371 transitions, 8795 flow, removed 40 selfloop flow, removed 1 redundant places. [2021-03-11 06:14:36,678 INFO L241 Difference]: Finished difference. Result has 341 places, 343 transitions, 7696 flow [2021-03-11 06:14:36,679 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=7610, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7696, PETRI_PLACES=341, PETRI_TRANSITIONS=343} [2021-03-11 06:14:36,679 INFO L335 CegarLoopForPetriNet]: 58 programPoint places, 283 predicate places. [2021-03-11 06:14:36,679 INFO L480 AbstractCegarLoop]: Abstraction has has 341 places, 343 transitions, 7696 flow [2021-03-11 06:14:36,679 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 34.583333333333336) internal successors, (415), 12 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:36,679 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:14:36,679 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:14:36,679 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-03-11 06:14:36,679 INFO L428 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 06:14:36,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:14:36,680 INFO L82 PathProgramCache]: Analyzing trace with hash -553927452, now seen corresponding path program 44 times [2021-03-11 06:14:36,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:14:36,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333913110] [2021-03-11 06:14:36,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:14:36,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:14:36,691 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:36,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 06:14:36,703 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:36,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-11 06:14:36,712 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:36,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-11 06:14:36,713 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:36,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 06:14:36,720 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:36,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:14:36,727 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:36,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-11 06:14:36,733 INFO L142 QuantifierPusher]: treesize reduction 7, result has 58.8 percent of original size [2021-03-11 06:14:36,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:14:36,741 INFO L142 QuantifierPusher]: treesize reduction 7, result has 58.8 percent of original size [2021-03-11 06:14:36,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:14:36,749 INFO L142 QuantifierPusher]: treesize reduction 7, result has 68.2 percent of original size [2021-03-11 06:14:36,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 06:14:36,760 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:36,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 06:14:36,770 INFO L142 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size [2021-03-11 06:14:36,770 INFO L147 QuantifierPusher]: treesize reduction 4, result has 66.7 percent of original size 8 [2021-03-11 06:14:36,782 INFO L142 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size [2021-03-11 06:14:36,783 INFO L147 QuantifierPusher]: treesize reduction 4, result has 66.7 percent of original size 8 [2021-03-11 06:14:36,796 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:36,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:14:36,797 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 06:14:36,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333913110] [2021-03-11 06:14:36,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:14:36,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-03-11 06:14:36,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780329279] [2021-03-11 06:14:36,797 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-03-11 06:14:36,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:14:36,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-03-11 06:14:36,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-03-11 06:14:36,798 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-03-11 06:14:36,798 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 343 transitions, 7696 flow. Second operand has 13 states, 13 states have (on average 34.46153846153846) internal successors, (448), 13 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:36,798 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:14:36,798 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-03-11 06:14:36,798 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:14:37,507 INFO L129 PetriNetUnfolder]: 627/2474 cut-off events. [2021-03-11 06:14:37,507 INFO L130 PetriNetUnfolder]: For 74395/74666 co-relation queries the response was YES. [2021-03-11 06:14:37,531 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19665 conditions, 2474 events. 627/2474 cut-off events. For 74395/74666 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 23131 event pairs, 289 based on Foata normal form. 52/2419 useless extension candidates. Maximal degree in co-relation 19549. Up to 1208 conditions per place. [2021-03-11 06:14:37,538 INFO L132 encePairwiseOnDemand]: 41/53 looper letters, 249 selfloop transitions, 7 changer transitions 53/352 dead transitions. [2021-03-11 06:14:37,539 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 352 transitions, 8396 flow [2021-03-11 06:14:37,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-03-11 06:14:37,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-03-11 06:14:37,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 462 transitions. [2021-03-11 06:14:37,539 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7264150943396226 [2021-03-11 06:14:37,539 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 462 transitions. [2021-03-11 06:14:37,540 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 462 transitions. [2021-03-11 06:14:37,540 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:14:37,540 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 462 transitions. [2021-03-11 06:14:37,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 38.5) internal successors, (462), 12 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:37,541 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 53.0) internal successors, (689), 13 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:37,541 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 53.0) internal successors, (689), 13 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:37,541 INFO L185 Difference]: Start difference. First operand has 341 places, 343 transitions, 7696 flow. Second operand 12 states and 462 transitions. [2021-03-11 06:14:37,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 352 transitions, 8396 flow [2021-03-11 06:14:37,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 352 transitions, 8153 flow, removed 29 selfloop flow, removed 14 redundant places. [2021-03-11 06:14:37,802 INFO L241 Difference]: Finished difference. Result has 335 places, 296 transitions, 6477 flow [2021-03-11 06:14:37,802 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=7162, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6477, PETRI_PLACES=335, PETRI_TRANSITIONS=296} [2021-03-11 06:14:37,802 INFO L335 CegarLoopForPetriNet]: 58 programPoint places, 277 predicate places. [2021-03-11 06:14:37,802 INFO L480 AbstractCegarLoop]: Abstraction has has 335 places, 296 transitions, 6477 flow [2021-03-11 06:14:37,803 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 34.46153846153846) internal successors, (448), 13 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:37,803 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:14:37,803 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:14:37,803 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-03-11 06:14:37,803 INFO L428 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 06:14:37,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:14:37,803 INFO L82 PathProgramCache]: Analyzing trace with hash -958262138, now seen corresponding path program 45 times [2021-03-11 06:14:37,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:14:37,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028846320] [2021-03-11 06:14:37,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:14:37,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:14:37,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:37,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 06:14:37,822 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:37,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 06:14:37,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:37,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 06:14:37,824 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:37,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 06:14:37,833 INFO L142 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size [2021-03-11 06:14:37,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 06:14:37,842 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:37,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-11 06:14:37,850 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:37,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-11 06:14:37,858 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:37,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-11 06:14:37,866 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:37,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 06:14:37,872 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-11 06:14:37,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:14:37,879 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:37,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 06:14:37,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:37,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:14:37,888 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 06:14:37,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028846320] [2021-03-11 06:14:37,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:14:37,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-11 06:14:37,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993561731] [2021-03-11 06:14:37,888 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-11 06:14:37,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:14:37,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-11 06:14:37,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-03-11 06:14:37,889 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-03-11 06:14:37,889 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 296 transitions, 6477 flow. Second operand has 11 states, 11 states have (on average 34.72727272727273) internal successors, (382), 11 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:37,889 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:14:37,889 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-03-11 06:14:37,889 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:14:38,384 INFO L129 PetriNetUnfolder]: 583/2256 cut-off events. [2021-03-11 06:14:38,385 INFO L130 PetriNetUnfolder]: For 67924/68165 co-relation queries the response was YES. [2021-03-11 06:14:38,405 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18004 conditions, 2256 events. 583/2256 cut-off events. For 67924/68165 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 20523 event pairs, 268 based on Foata normal form. 40/2209 useless extension candidates. Maximal degree in co-relation 17896. Up to 1159 conditions per place. [2021-03-11 06:14:38,412 INFO L132 encePairwiseOnDemand]: 43/53 looper letters, 240 selfloop transitions, 8 changer transitions 21/311 dead transitions. [2021-03-11 06:14:38,412 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 311 transitions, 7367 flow [2021-03-11 06:14:38,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-11 06:14:38,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-11 06:14:38,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 380 transitions. [2021-03-11 06:14:38,413 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7169811320754716 [2021-03-11 06:14:38,413 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 380 transitions. [2021-03-11 06:14:38,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 380 transitions. [2021-03-11 06:14:38,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:14:38,413 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 380 transitions. [2021-03-11 06:14:38,414 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 38.0) internal successors, (380), 10 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:38,414 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 53.0) internal successors, (583), 11 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:38,414 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 53.0) internal successors, (583), 11 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:38,414 INFO L185 Difference]: Start difference. First operand has 335 places, 296 transitions, 6477 flow. Second operand 10 states and 380 transitions. [2021-03-11 06:14:38,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 311 transitions, 7367 flow [2021-03-11 06:14:38,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 311 transitions, 6685 flow, removed 54 selfloop flow, removed 34 redundant places. [2021-03-11 06:14:38,615 INFO L241 Difference]: Finished difference. Result has 286 places, 286 transitions, 5706 flow [2021-03-11 06:14:38,615 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=5842, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5706, PETRI_PLACES=286, PETRI_TRANSITIONS=286} [2021-03-11 06:14:38,615 INFO L335 CegarLoopForPetriNet]: 58 programPoint places, 228 predicate places. [2021-03-11 06:14:38,615 INFO L480 AbstractCegarLoop]: Abstraction has has 286 places, 286 transitions, 5706 flow [2021-03-11 06:14:38,615 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 34.72727272727273) internal successors, (382), 11 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:38,615 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:14:38,615 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:14:38,615 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-03-11 06:14:38,615 INFO L428 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 06:14:38,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:14:38,616 INFO L82 PathProgramCache]: Analyzing trace with hash 1442482208, now seen corresponding path program 46 times [2021-03-11 06:14:38,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:14:38,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589744640] [2021-03-11 06:14:38,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:14:38,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:14:38,626 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:38,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 06:14:38,635 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:38,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 06:14:38,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:38,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 06:14:38,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:38,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 06:14:38,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:38,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-11 06:14:38,653 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:38,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:14:38,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:38,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:14:38,666 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:38,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:14:38,674 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:38,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:14:38,682 INFO L142 QuantifierPusher]: treesize reduction 11, result has 50.0 percent of original size [2021-03-11 06:14:38,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-11 06:14:38,688 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-11 06:14:38,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:14:38,695 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:38,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 06:14:38,703 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:38,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:14:38,704 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 06:14:38,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589744640] [2021-03-11 06:14:38,704 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:14:38,704 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-11 06:14:38,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471757767] [2021-03-11 06:14:38,704 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-11 06:14:38,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:14:38,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-11 06:14:38,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-03-11 06:14:38,704 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-03-11 06:14:38,705 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 286 transitions, 5706 flow. Second operand has 11 states, 11 states have (on average 34.72727272727273) internal successors, (382), 11 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:38,705 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:14:38,705 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-03-11 06:14:38,705 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:14:39,162 INFO L129 PetriNetUnfolder]: 548/2108 cut-off events. [2021-03-11 06:14:39,162 INFO L130 PetriNetUnfolder]: For 52368/52596 co-relation queries the response was YES. [2021-03-11 06:14:39,179 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15906 conditions, 2108 events. 548/2108 cut-off events. For 52368/52596 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 18791 event pairs, 253 based on Foata normal form. 30/2055 useless extension candidates. Maximal degree in co-relation 15813. Up to 1090 conditions per place. [2021-03-11 06:14:39,186 INFO L132 encePairwiseOnDemand]: 43/53 looper letters, 238 selfloop transitions, 11 changer transitions 4/295 dead transitions. [2021-03-11 06:14:39,186 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 295 transitions, 6412 flow [2021-03-11 06:14:39,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-11 06:14:39,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-11 06:14:39,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 376 transitions. [2021-03-11 06:14:39,187 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7094339622641509 [2021-03-11 06:14:39,187 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 376 transitions. [2021-03-11 06:14:39,187 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 376 transitions. [2021-03-11 06:14:39,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:14:39,187 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 376 transitions. [2021-03-11 06:14:39,188 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 37.6) internal successors, (376), 10 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:39,188 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 53.0) internal successors, (583), 11 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:39,188 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 53.0) internal successors, (583), 11 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:39,188 INFO L185 Difference]: Start difference. First operand has 286 places, 286 transitions, 5706 flow. Second operand 10 states and 376 transitions. [2021-03-11 06:14:39,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 295 transitions, 6412 flow [2021-03-11 06:14:39,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 295 transitions, 6069 flow, removed 42 selfloop flow, removed 22 redundant places. [2021-03-11 06:14:39,367 INFO L241 Difference]: Finished difference. Result has 261 places, 286 transitions, 5414 flow [2021-03-11 06:14:39,368 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=5385, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5414, PETRI_PLACES=261, PETRI_TRANSITIONS=286} [2021-03-11 06:14:39,368 INFO L335 CegarLoopForPetriNet]: 58 programPoint places, 203 predicate places. [2021-03-11 06:14:39,368 INFO L480 AbstractCegarLoop]: Abstraction has has 261 places, 286 transitions, 5414 flow [2021-03-11 06:14:39,368 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 34.72727272727273) internal successors, (382), 11 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:39,368 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:14:39,368 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:14:39,368 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-03-11 06:14:39,368 INFO L428 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 06:14:39,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:14:39,368 INFO L82 PathProgramCache]: Analyzing trace with hash -1200363730, now seen corresponding path program 47 times [2021-03-11 06:14:39,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:14:39,369 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413234942] [2021-03-11 06:14:39,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:14:39,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:14:39,378 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:39,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 06:14:39,387 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:39,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 06:14:39,387 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:39,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 06:14:39,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:39,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 06:14:39,397 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:39,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-11 06:14:39,405 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:39,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-11 06:14:39,406 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:39,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-11 06:14:39,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:39,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-11 06:14:39,420 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:39,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 06:14:39,427 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-11 06:14:39,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:14:39,434 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:39,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 06:14:39,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:39,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:14:39,442 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 06:14:39,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413234942] [2021-03-11 06:14:39,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:14:39,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-11 06:14:39,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085627480] [2021-03-11 06:14:39,443 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-11 06:14:39,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:14:39,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-11 06:14:39,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-03-11 06:14:39,443 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-03-11 06:14:39,443 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 286 transitions, 5414 flow. Second operand has 10 states, 10 states have (on average 34.9) internal successors, (349), 10 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:39,443 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:14:39,443 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-03-11 06:14:39,443 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:14:39,845 INFO L129 PetriNetUnfolder]: 545/2050 cut-off events. [2021-03-11 06:14:39,845 INFO L130 PetriNetUnfolder]: For 44121/44345 co-relation queries the response was YES. [2021-03-11 06:14:39,860 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14554 conditions, 2050 events. 545/2050 cut-off events. For 44121/44345 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 18247 event pairs, 253 based on Foata normal form. 31/1998 useless extension candidates. Maximal degree in co-relation 14472. Up to 1083 conditions per place. [2021-03-11 06:14:39,866 INFO L132 encePairwiseOnDemand]: 45/53 looper letters, 224 selfloop transitions, 2 changer transitions 24/283 dead transitions. [2021-03-11 06:14:39,866 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 283 transitions, 5901 flow [2021-03-11 06:14:39,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 06:14:39,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 06:14:39,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 337 transitions. [2021-03-11 06:14:39,867 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7064989517819706 [2021-03-11 06:14:39,867 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 337 transitions. [2021-03-11 06:14:39,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 337 transitions. [2021-03-11 06:14:39,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:14:39,867 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 337 transitions. [2021-03-11 06:14:39,867 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 37.44444444444444) internal successors, (337), 9 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:39,868 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 53.0) internal successors, (530), 10 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 06:14:39,868 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 53.0) internal successors, (530), 10 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 06:14:39,868 INFO L185 Difference]: Start difference. First operand has 261 places, 286 transitions, 5414 flow. Second operand 9 states and 337 transitions. [2021-03-11 06:14:39,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 283 transitions, 5901 flow [2021-03-11 06:14:40,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 283 transitions, 5529 flow, removed 8 selfloop flow, removed 17 redundant places. [2021-03-11 06:14:40,008 INFO L241 Difference]: Finished difference. Result has 246 places, 259 transitions, 4739 flow [2021-03-11 06:14:40,008 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=4905, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4739, PETRI_PLACES=246, PETRI_TRANSITIONS=259} [2021-03-11 06:14:40,008 INFO L335 CegarLoopForPetriNet]: 58 programPoint places, 188 predicate places. [2021-03-11 06:14:40,008 INFO L480 AbstractCegarLoop]: Abstraction has has 246 places, 259 transitions, 4739 flow [2021-03-11 06:14:40,008 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 34.9) internal successors, (349), 10 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:40,008 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:14:40,008 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:14:40,008 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-03-11 06:14:40,008 INFO L428 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 06:14:40,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:14:40,009 INFO L82 PathProgramCache]: Analyzing trace with hash 2039565080, now seen corresponding path program 48 times [2021-03-11 06:14:40,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:14:40,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430505955] [2021-03-11 06:14:40,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:14:40,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:14:40,027 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:40,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:14:40,033 INFO L142 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size [2021-03-11 06:14:40,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:14:40,035 INFO L142 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size [2021-03-11 06:14:40,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:14:40,037 INFO L142 QuantifierPusher]: treesize reduction 21, result has 56.3 percent of original size [2021-03-11 06:14:40,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 06:14:40,057 INFO L142 QuantifierPusher]: treesize reduction 7, result has 86.8 percent of original size [2021-03-11 06:14:40,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-03-11 06:14:40,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:40,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-11 06:14:40,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:40,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-11 06:14:40,123 INFO L142 QuantifierPusher]: treesize reduction 10, result has 47.4 percent of original size [2021-03-11 06:14:40,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 06:14:40,131 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:40,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:14:40,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 06:14:40,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430505955] [2021-03-11 06:14:40,132 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:14:40,132 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 06:14:40,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924474924] [2021-03-11 06:14:40,132 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 06:14:40,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:14:40,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 06:14:40,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-03-11 06:14:40,132 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-03-11 06:14:40,132 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 259 transitions, 4739 flow. Second operand has 8 states, 8 states have (on average 35.375) internal successors, (283), 8 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:40,132 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:14:40,133 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-03-11 06:14:40,133 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:14:40,607 INFO L129 PetriNetUnfolder]: 513/1956 cut-off events. [2021-03-11 06:14:40,607 INFO L130 PetriNetUnfolder]: For 37715/37867 co-relation queries the response was YES. [2021-03-11 06:14:40,620 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13585 conditions, 1956 events. 513/1956 cut-off events. For 37715/37867 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 17366 event pairs, 121 based on Foata normal form. 79/1970 useless extension candidates. Maximal degree in co-relation 13507. Up to 560 conditions per place. [2021-03-11 06:14:40,625 INFO L132 encePairwiseOnDemand]: 40/53 looper letters, 113 selfloop transitions, 71 changer transitions 86/303 dead transitions. [2021-03-11 06:14:40,625 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 303 transitions, 6161 flow [2021-03-11 06:14:40,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-03-11 06:14:40,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-03-11 06:14:40,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 468 transitions. [2021-03-11 06:14:40,626 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7358490566037735 [2021-03-11 06:14:40,626 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 468 transitions. [2021-03-11 06:14:40,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 468 transitions. [2021-03-11 06:14:40,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:14:40,626 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 468 transitions. [2021-03-11 06:14:40,626 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 39.0) internal successors, (468), 12 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:40,627 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 53.0) internal successors, (689), 13 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:40,627 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 53.0) internal successors, (689), 13 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:40,627 INFO L185 Difference]: Start difference. First operand has 246 places, 259 transitions, 4739 flow. Second operand 12 states and 468 transitions. [2021-03-11 06:14:40,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 303 transitions, 6161 flow [2021-03-11 06:14:40,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 303 transitions, 6015 flow, removed 18 selfloop flow, removed 16 redundant places. [2021-03-11 06:14:40,750 INFO L241 Difference]: Finished difference. Result has 229 places, 199 transitions, 3559 flow [2021-03-11 06:14:40,750 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=4524, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3559, PETRI_PLACES=229, PETRI_TRANSITIONS=199} [2021-03-11 06:14:40,750 INFO L335 CegarLoopForPetriNet]: 58 programPoint places, 171 predicate places. [2021-03-11 06:14:40,750 INFO L480 AbstractCegarLoop]: Abstraction has has 229 places, 199 transitions, 3559 flow [2021-03-11 06:14:40,750 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 35.375) internal successors, (283), 8 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:40,750 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:14:40,750 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:14:40,750 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-03-11 06:14:40,751 INFO L428 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 06:14:40,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:14:40,751 INFO L82 PathProgramCache]: Analyzing trace with hash -551627994, now seen corresponding path program 49 times [2021-03-11 06:14:40,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:14:40,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75706319] [2021-03-11 06:14:40,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:14:40,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:14:40,763 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:40,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 06:14:40,772 INFO L142 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size [2021-03-11 06:14:40,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:14:40,774 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:40,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:14:40,776 INFO L142 QuantifierPusher]: treesize reduction 15, result has 50.0 percent of original size [2021-03-11 06:14:40,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 06:14:40,783 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-11 06:14:40,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:14:40,788 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-11 06:14:40,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:14:40,795 INFO L142 QuantifierPusher]: treesize reduction 8, result has 55.6 percent of original size [2021-03-11 06:14:40,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:14:40,799 INFO L142 QuantifierPusher]: treesize reduction 8, result has 60.0 percent of original size [2021-03-11 06:14:40,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-11 06:14:40,807 INFO L142 QuantifierPusher]: treesize reduction 15, result has 60.5 percent of original size [2021-03-11 06:14:40,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 06:14:40,822 INFO L142 QuantifierPusher]: treesize reduction 11, result has 52.2 percent of original size [2021-03-11 06:14:40,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-11 06:14:40,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:40,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:14:40,823 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 06:14:40,824 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75706319] [2021-03-11 06:14:40,824 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:14:40,824 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 06:14:40,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76320908] [2021-03-11 06:14:40,824 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 06:14:40,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:14:40,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 06:14:40,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-03-11 06:14:40,824 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-03-11 06:14:40,825 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 199 transitions, 3559 flow. Second operand has 8 states, 8 states have (on average 35.375) internal successors, (283), 8 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:40,825 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:14:40,825 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-03-11 06:14:40,825 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:14:41,136 INFO L129 PetriNetUnfolder]: 484/1915 cut-off events. [2021-03-11 06:14:41,136 INFO L130 PetriNetUnfolder]: For 37352/37502 co-relation queries the response was YES. [2021-03-11 06:14:41,149 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12888 conditions, 1915 events. 484/1915 cut-off events. For 37352/37502 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 16724 event pairs, 151 based on Foata normal form. 36/1877 useless extension candidates. Maximal degree in co-relation 12811. Up to 470 conditions per place. [2021-03-11 06:14:41,153 INFO L132 encePairwiseOnDemand]: 41/53 looper letters, 99 selfloop transitions, 62 changer transitions 52/246 dead transitions. [2021-03-11 06:14:41,153 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 246 transitions, 4826 flow [2021-03-11 06:14:41,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 06:14:41,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-11 06:14:41,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 326 transitions. [2021-03-11 06:14:41,154 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7688679245283019 [2021-03-11 06:14:41,154 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 326 transitions. [2021-03-11 06:14:41,154 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 326 transitions. [2021-03-11 06:14:41,154 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:14:41,154 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 326 transitions. [2021-03-11 06:14:41,155 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 40.75) internal successors, (326), 8 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:41,155 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 53.0) internal successors, (477), 9 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:41,155 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 53.0) internal successors, (477), 9 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:41,155 INFO L185 Difference]: Start difference. First operand has 229 places, 199 transitions, 3559 flow. Second operand 8 states and 326 transitions. [2021-03-11 06:14:41,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 246 transitions, 4826 flow [2021-03-11 06:14:41,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 246 transitions, 4288 flow, removed 39 selfloop flow, removed 22 redundant places. [2021-03-11 06:14:41,255 INFO L241 Difference]: Finished difference. Result has 213 places, 174 transitions, 2811 flow [2021-03-11 06:14:41,255 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=3121, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2811, PETRI_PLACES=213, PETRI_TRANSITIONS=174} [2021-03-11 06:14:41,255 INFO L335 CegarLoopForPetriNet]: 58 programPoint places, 155 predicate places. [2021-03-11 06:14:41,255 INFO L480 AbstractCegarLoop]: Abstraction has has 213 places, 174 transitions, 2811 flow [2021-03-11 06:14:41,256 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 35.375) internal successors, (283), 8 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:41,256 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:14:41,256 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:14:41,256 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-03-11 06:14:41,256 INFO L428 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 06:14:41,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:14:41,256 INFO L82 PathProgramCache]: Analyzing trace with hash -63868386, now seen corresponding path program 50 times [2021-03-11 06:14:41,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:14:41,256 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146923570] [2021-03-11 06:14:41,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:14:41,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:14:41,270 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:41,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:14:41,275 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:41,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:14:41,276 INFO L142 QuantifierPusher]: treesize reduction 4, result has 85.2 percent of original size [2021-03-11 06:14:41,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 06:14:41,285 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:41,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 06:14:41,297 INFO L142 QuantifierPusher]: treesize reduction 11, result has 67.6 percent of original size [2021-03-11 06:14:41,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 06:14:41,315 INFO L142 QuantifierPusher]: treesize reduction 13, result has 66.7 percent of original size [2021-03-11 06:14:41,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-11 06:14:41,334 INFO L142 QuantifierPusher]: treesize reduction 15, result has 61.5 percent of original size [2021-03-11 06:14:41,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-11 06:14:41,351 INFO L142 QuantifierPusher]: treesize reduction 42, result has 44.0 percent of original size [2021-03-11 06:14:41,351 INFO L147 QuantifierPusher]: treesize reduction 5, result has 84.8 percent of original size 28 [2021-03-11 06:14:41,375 INFO L142 QuantifierPusher]: treesize reduction 23, result has 30.3 percent of original size [2021-03-11 06:14:41,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:14:41,377 INFO L142 QuantifierPusher]: treesize reduction 38, result has 24.0 percent of original size [2021-03-11 06:14:41,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-11 06:14:41,378 INFO L142 QuantifierPusher]: treesize reduction 27, result has 3.6 percent of original size [2021-03-11 06:14:41,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:14:41,379 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:41,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:14:41,379 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 06:14:41,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146923570] [2021-03-11 06:14:41,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:14:41,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 06:14:41,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676990252] [2021-03-11 06:14:41,379 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 06:14:41,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:14:41,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 06:14:41,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-03-11 06:14:41,380 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-03-11 06:14:41,380 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 174 transitions, 2811 flow. Second operand has 9 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 06:14:41,380 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:14:41,380 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-03-11 06:14:41,380 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:14:41,580 INFO L129 PetriNetUnfolder]: 254/1015 cut-off events. [2021-03-11 06:14:41,580 INFO L130 PetriNetUnfolder]: For 21601/21709 co-relation queries the response was YES. [2021-03-11 06:14:41,586 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6935 conditions, 1015 events. 254/1015 cut-off events. For 21601/21709 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 7604 event pairs, 64 based on Foata normal form. 114/1106 useless extension candidates. Maximal degree in co-relation 6866. Up to 191 conditions per place. [2021-03-11 06:14:41,587 INFO L132 encePairwiseOnDemand]: 44/53 looper letters, 30 selfloop transitions, 9 changer transitions 96/168 dead transitions. [2021-03-11 06:14:41,587 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 168 transitions, 2941 flow [2021-03-11 06:14:41,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 06:14:41,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-11 06:14:41,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 312 transitions. [2021-03-11 06:14:41,588 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7358490566037735 [2021-03-11 06:14:41,588 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 312 transitions. [2021-03-11 06:14:41,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 312 transitions. [2021-03-11 06:14:41,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:14:41,588 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 312 transitions. [2021-03-11 06:14:41,589 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 06:14:41,589 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 53.0) internal successors, (477), 9 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:41,589 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 53.0) internal successors, (477), 9 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:41,589 INFO L185 Difference]: Start difference. First operand has 213 places, 174 transitions, 2811 flow. Second operand 8 states and 312 transitions. [2021-03-11 06:14:41,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 168 transitions, 2941 flow [2021-03-11 06:14:41,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 168 transitions, 2485 flow, removed 100 selfloop flow, removed 24 redundant places. [2021-03-11 06:14:41,636 INFO L241 Difference]: Finished difference. Result has 189 places, 72 transitions, 663 flow [2021-03-11 06:14:41,636 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1915, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=663, PETRI_PLACES=189, PETRI_TRANSITIONS=72} [2021-03-11 06:14:41,636 INFO L335 CegarLoopForPetriNet]: 58 programPoint places, 131 predicate places. [2021-03-11 06:14:41,636 INFO L480 AbstractCegarLoop]: Abstraction has has 189 places, 72 transitions, 663 flow [2021-03-11 06:14:41,636 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 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 06:14:41,636 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:14:41,636 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:14:41,636 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-03-11 06:14:41,636 INFO L428 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 06:14:41,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:14:41,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1155370432, now seen corresponding path program 51 times [2021-03-11 06:14:41,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:14:41,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84655397] [2021-03-11 06:14:41,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:14:41,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:14:41,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:41,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 06:14:41,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:41,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:14:41,674 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:41,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:14:41,678 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-11 06:14:41,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:14:41,679 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-11 06:14:41,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:14:41,685 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-11 06:14:41,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:14:41,691 INFO L142 QuantifierPusher]: treesize reduction 8, result has 55.6 percent of original size [2021-03-11 06:14:41,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:14:41,692 INFO L142 QuantifierPusher]: treesize reduction 8, result has 55.6 percent of original size [2021-03-11 06:14:41,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:14:41,699 INFO L142 QuantifierPusher]: treesize reduction 12, result has 42.9 percent of original size [2021-03-11 06:14:41,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 06:14:41,705 INFO L142 QuantifierPusher]: treesize reduction 6, result has 14.3 percent of original size [2021-03-11 06:14:41,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:14:41,706 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:41,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:14:41,706 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 06:14:41,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84655397] [2021-03-11 06:14:41,706 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:14:41,706 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 06:14:41,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238007533] [2021-03-11 06:14:41,707 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 06:14:41,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:14:41,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 06:14:41,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-03-11 06:14:41,707 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-03-11 06:14:41,707 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 72 transitions, 663 flow. Second operand has 9 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 06:14:41,707 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:14:41,707 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-03-11 06:14:41,707 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:14:41,817 INFO L129 PetriNetUnfolder]: 20/123 cut-off events. [2021-03-11 06:14:41,817 INFO L130 PetriNetUnfolder]: For 1515/1521 co-relation queries the response was YES. [2021-03-11 06:14:41,817 INFO L84 FinitePrefix]: Finished finitePrefix Result has 789 conditions, 123 events. 20/123 cut-off events. For 1515/1521 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 417 event pairs, 9 based on Foata normal form. 9/131 useless extension candidates. Maximal degree in co-relation 726. Up to 28 conditions per place. [2021-03-11 06:14:41,817 INFO L132 encePairwiseOnDemand]: 44/53 looper letters, 0 selfloop transitions, 0 changer transitions 56/56 dead transitions. [2021-03-11 06:14:41,817 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 56 transitions, 681 flow [2021-03-11 06:14:41,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-11 06:14:41,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-11 06:14:41,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 393 transitions. [2021-03-11 06:14:41,818 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6740994854202401 [2021-03-11 06:14:41,818 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 393 transitions. [2021-03-11 06:14:41,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 393 transitions. [2021-03-11 06:14:41,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:14:41,818 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 393 transitions. [2021-03-11 06:14:41,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 35.72727272727273) internal successors, (393), 11 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:41,819 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 53.0) internal successors, (636), 12 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:41,819 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 53.0) internal successors, (636), 12 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:41,819 INFO L185 Difference]: Start difference. First operand has 189 places, 72 transitions, 663 flow. Second operand 11 states and 393 transitions. [2021-03-11 06:14:41,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 56 transitions, 681 flow [2021-03-11 06:14:41,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 56 transitions, 391 flow, removed 71 selfloop flow, removed 50 redundant places. [2021-03-11 06:14:41,822 INFO L241 Difference]: Finished difference. Result has 96 places, 0 transitions, 0 flow [2021-03-11 06:14:41,823 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=96, PETRI_TRANSITIONS=0} [2021-03-11 06:14:41,823 INFO L335 CegarLoopForPetriNet]: 58 programPoint places, 38 predicate places. [2021-03-11 06:14:41,823 INFO L480 AbstractCegarLoop]: Abstraction has has 96 places, 0 transitions, 0 flow [2021-03-11 06:14:41,823 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 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 06:14:41,823 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-03-11 06:14:41,826 INFO L202 PluginConnector]: Adding new model bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 06:14:41 BasicIcfg [2021-03-11 06:14:41,827 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 06:14:41,827 INFO L168 Benchmark]: Toolchain (without parser) took 117898.29 ms. Allocated memory was 255.9 MB in the beginning and 12.0 GB in the end (delta: 11.8 GB). Free memory was 236.4 MB in the beginning and 4.7 GB in the end (delta: -4.4 GB). Peak memory consumption was 7.3 GB. Max. memory is 16.0 GB. [2021-03-11 06:14:41,827 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.08 ms. Allocated memory is still 255.9 MB. Free memory was 237.7 MB in the beginning and 237.5 MB in the end (delta: 162.8 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 06:14:41,827 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.85 ms. Allocated memory is still 255.9 MB. Free memory was 235.9 MB in the beginning and 234.4 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 06:14:41,827 INFO L168 Benchmark]: Boogie Preprocessor took 10.61 ms. Allocated memory is still 255.9 MB. Free memory was 234.4 MB in the beginning and 233.5 MB in the end (delta: 861.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 06:14:41,827 INFO L168 Benchmark]: RCFGBuilder took 203.62 ms. Allocated memory is still 255.9 MB. Free memory was 233.3 MB in the beginning and 236.4 MB in the end (delta: -3.0 MB). Peak memory consumption was 19.6 MB. Max. memory is 16.0 GB. [2021-03-11 06:14:41,827 INFO L168 Benchmark]: TraceAbstraction took 117657.84 ms. Allocated memory was 255.9 MB in the beginning and 12.0 GB in the end (delta: 11.8 GB). Free memory was 235.6 MB in the beginning and 4.7 GB in the end (delta: -4.4 GB). Peak memory consumption was 7.3 GB. Max. memory is 16.0 GB. [2021-03-11 06:14:41,828 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 0.08 ms. Allocated memory is still 255.9 MB. Free memory was 237.7 MB in the beginning and 237.5 MB in the end (delta: 162.8 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 19.85 ms. Allocated memory is still 255.9 MB. Free memory was 235.9 MB in the beginning and 234.4 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 10.61 ms. Allocated memory is still 255.9 MB. Free memory was 234.4 MB in the beginning and 233.5 MB in the end (delta: 861.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 203.62 ms. Allocated memory is still 255.9 MB. Free memory was 233.3 MB in the beginning and 236.4 MB in the end (delta: -3.0 MB). Peak memory consumption was 19.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 117657.84 ms. Allocated memory was 255.9 MB in the beginning and 12.0 GB in the end (delta: 11.8 GB). Free memory was 235.6 MB in the beginning and 4.7 GB in the end (delta: -4.4 GB). Peak memory consumption was 7.3 GB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 82]: 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 4 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 12.8ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 117570.3ms, OverallIterations: 51, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 112490.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 46.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 646 SDtfs, 1904 SDslu, 417 SDs, 0 SdLazy, 11726 SolverSat, 1939 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5058.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 726 GetRequests, 107 SyntacticMatches, 33 SemanticMatches, 586 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1512 ImplicationChecksByTransitivity, 5983.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=18606occurred in iteration=31, InterpolantAutomatonStates: 556, 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: 122.9ms SsaConstructionTime, 250.7ms SatisfiabilityAnalysisTime, 4399.7ms InterpolantComputationTime, 2448 NumberOfCodeBlocks, 2448 NumberOfCodeBlocksAsserted, 51 NumberOfCheckSat, 2397 ConstructedInterpolants, 0 QuantifiedInterpolants, 15595 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 51 InterpolantComputations, 51 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...