/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-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-5.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-24 15:24:46,313 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-24 15:24:46,315 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-24 15:24:46,340 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-24 15:24:46,340 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-24 15:24:46,341 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-24 15:24:46,342 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-24 15:24:46,344 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-24 15:24:46,346 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-24 15:24:46,346 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-24 15:24:46,347 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-24 15:24:46,348 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-24 15:24:46,349 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-24 15:24:46,349 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-24 15:24:46,350 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-24 15:24:46,351 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-24 15:24:46,352 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-24 15:24:46,353 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-24 15:24:46,354 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-24 15:24:46,356 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-24 15:24:46,357 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-24 15:24:46,358 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-24 15:24:46,359 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-24 15:24:46,360 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-24 15:24:46,362 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-24 15:24:46,369 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-24 15:24:46,369 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-24 15:24:46,370 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-24 15:24:46,371 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-VariableLbe.epf [2021-03-24 15:24:46,390 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-24 15:24:46,391 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-24 15:24:46,392 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-24 15:24:46,392 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-24 15:24:46,392 INFO L138 SettingsManager]: * Use SBE=true [2021-03-24 15:24:46,392 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-24 15:24:46,392 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-24 15:24:46,393 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-24 15:24:46,393 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-24 15:24:46,393 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-24 15:24:46,393 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-24 15:24:46,393 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-24 15:24:46,393 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-24 15:24:46,393 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-24 15:24:46,394 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-24 15:24:46,394 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-24 15:24:46,394 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-24 15:24:46,394 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-24 15:24:46,394 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-24 15:24:46,394 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-24 15:24:46,394 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-24 15:24:46,394 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 15:24:46,395 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-24 15:24:46,395 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-24 15:24:46,395 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-24 15:24:46,395 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-24 15:24:46,395 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-24 15:24:46,395 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-24 15:24:46,395 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-24 15:24:46,395 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-24 15:24:46,703 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-24 15:24:46,721 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-24 15:24:46,723 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-24 15:24:46,724 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-24 15:24:46,725 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-24 15:24:46,725 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-5.wvr.bpl [2021-03-24 15:24:46,726 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-5.wvr.bpl' [2021-03-24 15:24:46,773 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-24 15:24:46,774 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-24 15:24:46,776 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-24 15:24:46,776 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-24 15:24:46,776 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-24 15:24:46,786 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 03:24:46" (1/1) ... [2021-03-24 15:24:46,791 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 03:24:46" (1/1) ... [2021-03-24 15:24:46,797 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-24 15:24:46,799 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-24 15:24:46,799 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-24 15:24:46,799 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-24 15:24:46,806 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 03:24:46" (1/1) ... [2021-03-24 15:24:46,806 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 03:24:46" (1/1) ... [2021-03-24 15:24:46,809 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 03:24:46" (1/1) ... [2021-03-24 15:24:46,809 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 03:24:46" (1/1) ... [2021-03-24 15:24:46,814 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 03:24:46" (1/1) ... [2021-03-24 15:24:46,814 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 03:24:46" (1/1) ... [2021-03-24 15:24:46,815 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 03:24:46" (1/1) ... [2021-03-24 15:24:46,820 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-24 15:24:46,820 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-24 15:24:46,820 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-24 15:24:46,821 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-24 15:24:46,821 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 03:24:46" (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 [2021-03-24 15:24:46,884 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-03-24 15:24:46,884 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-24 15:24:46,885 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-24 15:24:46,886 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-03-24 15:24:46,886 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-24 15:24:46,886 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-24 15:24:46,886 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-24 15:24:46,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-24 15:24:46,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-24 15:24:46,886 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-03-24 15:24:46,887 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-03-24 15:24:46,887 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-03-24 15:24:46,887 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-03-24 15:24:46,887 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-03-24 15:24:46,887 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-03-24 15:24:46,887 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2021-03-24 15:24:46,887 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2021-03-24 15:24:46,888 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2021-03-24 15:24:46,889 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-24 15:24:47,125 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-24 15:24:47,125 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-24 15:24:47,126 INFO L202 PluginConnector]: Adding new model ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 03:24:47 BoogieIcfgContainer [2021-03-24 15:24:47,126 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-24 15:24:47,128 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-24 15:24:47,128 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-24 15:24:47,130 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-24 15:24:47,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 03:24:46" (1/2) ... [2021-03-24 15:24:47,130 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46d62113 and model type ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 03:24:47, skipping insertion in model container [2021-03-24 15:24:47,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 03:24:47" (2/2) ... [2021-03-24 15:24:47,132 INFO L111 eAbstractionObserver]: Analyzing ICFG ticket-5.wvr.bpl [2021-03-24 15:24:47,147 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-24 15:24:47,151 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-24 15:24:47,152 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-24 15:24:47,205 INFO L149 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2021-03-24 15:24:47,222 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-03-24 15:24:47,242 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 15:24:47,242 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 15:24:47,242 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 15:24:47,242 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 15:24:47,242 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 15:24:47,242 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 15:24:47,242 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 15:24:47,243 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 15:24:47,252 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 62 places, 46 transitions, 132 flow [2021-03-24 15:24:47,283 INFO L129 PetriNetUnfolder]: 0/41 cut-off events. [2021-03-24 15:24:47,283 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2021-03-24 15:24:47,285 INFO L84 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 41 events. 0/41 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 91 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-24 15:24:47,285 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 46 transitions, 132 flow [2021-03-24 15:24:47,288 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 39 transitions, 108 flow [2021-03-24 15:24:47,289 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-24 15:24:47,302 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 55 places, 39 transitions, 108 flow [2021-03-24 15:24:47,305 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 55 places, 39 transitions, 108 flow [2021-03-24 15:24:47,306 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 55 places, 39 transitions, 108 flow [2021-03-24 15:24:47,331 INFO L129 PetriNetUnfolder]: 0/39 cut-off events. [2021-03-24 15:24:47,332 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2021-03-24 15:24:47,332 INFO L84 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 39 events. 0/39 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 91 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-24 15:24:47,334 INFO L142 LiptonReduction]: Number of co-enabled transitions 748 [2021-03-24 15:24:47,444 INFO L154 LiptonReduction]: Checked pairs total: 1556 [2021-03-24 15:24:47,444 INFO L156 LiptonReduction]: Total number of compositions: 6 [2021-03-24 15:24:47,446 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 158 [2021-03-24 15:24:47,473 INFO L129 PetriNetUnfolder]: 0/32 cut-off events. [2021-03-24 15:24:47,473 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2021-03-24 15:24:47,474 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:24:47,474 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:24:47,475 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 15:24:47,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:24:47,480 INFO L82 PathProgramCache]: Analyzing trace with hash -2009610937, now seen corresponding path program 1 times [2021-03-24 15:24:47,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:24:47,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707196528] [2021-03-24 15:24:47,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:24:47,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:24:47,708 INFO L142 QuantifierPusher]: treesize reduction 15, result has 46.4 percent of original size [2021-03-24 15:24:47,710 INFO L147 QuantifierPusher]: treesize reduction 4, result has 69.2 percent of original size 9 [2021-03-24 15:24:47,724 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:47,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:24:47,730 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:47,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:24:47,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:47,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:24:47,732 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:47,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-03-24 15:24:47,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:47,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:24:47,738 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:47,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-03-24 15:24:47,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:24:47,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707196528] [2021-03-24 15:24:47,741 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:24:47,741 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 15:24:47,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35035218] [2021-03-24 15:24:47,748 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 15:24:47,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:24:47,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 15:24:47,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-03-24 15:24:47,760 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 52 [2021-03-24 15:24:47,761 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 33 transitions, 96 flow. Second operand has 5 states, 5 states have (on average 39.6) internal successors, (198), 5 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:47,762 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:24:47,762 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 52 [2021-03-24 15:24:47,763 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:24:48,028 INFO L129 PetriNetUnfolder]: 1023/2027 cut-off events. [2021-03-24 15:24:48,028 INFO L130 PetriNetUnfolder]: For 172/172 co-relation queries the response was YES. [2021-03-24 15:24:48,037 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3694 conditions, 2027 events. 1023/2027 cut-off events. For 172/172 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 14527 event pairs, 452 based on Foata normal form. 1/2007 useless extension candidates. Maximal degree in co-relation 3664. Up to 810 conditions per place. [2021-03-24 15:24:48,049 INFO L132 encePairwiseOnDemand]: 39/52 looper letters, 23 selfloop transitions, 11 changer transitions 1/55 dead transitions. [2021-03-24 15:24:48,049 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 55 transitions, 210 flow [2021-03-24 15:24:48,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 15:24:48,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 15:24:48,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 221 transitions. [2021-03-24 15:24:48,060 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.85 [2021-03-24 15:24:48,060 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 221 transitions. [2021-03-24 15:24:48,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 221 transitions. [2021-03-24 15:24:48,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:24:48,063 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 221 transitions. [2021-03-24 15:24:48,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 44.2) internal successors, (221), 5 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:48,070 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 52.0) internal successors, (312), 6 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) [2021-03-24 15:24:48,070 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 52.0) internal successors, (312), 6 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) [2021-03-24 15:24:48,071 INFO L185 Difference]: Start difference. First operand has 49 places, 33 transitions, 96 flow. Second operand 5 states and 221 transitions. [2021-03-24 15:24:48,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 55 transitions, 210 flow [2021-03-24 15:24:48,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 55 transitions, 190 flow, removed 0 selfloop flow, removed 10 redundant places. [2021-03-24 15:24:48,085 INFO L241 Difference]: Finished difference. Result has 46 places, 42 transitions, 155 flow [2021-03-24 15:24:48,087 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=155, PETRI_PLACES=46, PETRI_TRANSITIONS=42} [2021-03-24 15:24:48,088 INFO L343 CegarLoopForPetriNet]: 49 programPoint places, -3 predicate places. [2021-03-24 15:24:48,088 INFO L480 AbstractCegarLoop]: Abstraction has has 46 places, 42 transitions, 155 flow [2021-03-24 15:24:48,088 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 39.6) internal successors, (198), 5 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:48,088 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:24:48,088 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:24:48,089 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-24 15:24:48,089 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 15:24:48,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:24:48,089 INFO L82 PathProgramCache]: Analyzing trace with hash 1400853869, now seen corresponding path program 2 times [2021-03-24 15:24:48,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:24:48,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071255866] [2021-03-24 15:24:48,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:24:48,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:24:48,122 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:48,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:24:48,134 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:48,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:48,139 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:48,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:48,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:48,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:48,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:48,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:48,153 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:48,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:48,155 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:48,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:48,160 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:48,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:24:48,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:24:48,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071255866] [2021-03-24 15:24:48,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:24:48,166 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 15:24:48,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583667005] [2021-03-24 15:24:48,167 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 15:24:48,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:24:48,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 15:24:48,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-03-24 15:24:48,174 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 52 [2021-03-24 15:24:48,175 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 42 transitions, 155 flow. Second operand has 7 states, 7 states have (on average 32.285714285714285) internal successors, (226), 7 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:48,175 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:24:48,175 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 52 [2021-03-24 15:24:48,175 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:24:50,003 INFO L129 PetriNetUnfolder]: 11569/18754 cut-off events. [2021-03-24 15:24:50,004 INFO L130 PetriNetUnfolder]: For 2592/2734 co-relation queries the response was YES. [2021-03-24 15:24:50,069 INFO L84 FinitePrefix]: Finished finitePrefix Result has 41411 conditions, 18754 events. 11569/18754 cut-off events. For 2592/2734 co-relation queries the response was YES. Maximal size of possible extension queue 1430. Compared 152286 event pairs, 2899 based on Foata normal form. 110/17348 useless extension candidates. Maximal degree in co-relation 41149. Up to 5381 conditions per place. [2021-03-24 15:24:50,182 INFO L132 encePairwiseOnDemand]: 40/52 looper letters, 42 selfloop transitions, 36 changer transitions 0/99 dead transitions. [2021-03-24 15:24:50,182 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 99 transitions, 463 flow [2021-03-24 15:24:50,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 15:24:50,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 15:24:50,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 289 transitions. [2021-03-24 15:24:50,187 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7939560439560439 [2021-03-24 15:24:50,187 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 289 transitions. [2021-03-24 15:24:50,187 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 289 transitions. [2021-03-24 15:24:50,188 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:24:50,188 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 289 transitions. [2021-03-24 15:24:50,190 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 41.285714285714285) internal successors, (289), 7 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:50,192 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 52.0) internal successors, (416), 8 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:50,193 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 52.0) internal successors, (416), 8 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:50,193 INFO L185 Difference]: Start difference. First operand has 46 places, 42 transitions, 155 flow. Second operand 7 states and 289 transitions. [2021-03-24 15:24:50,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 99 transitions, 463 flow [2021-03-24 15:24:50,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 99 transitions, 444 flow, removed 1 selfloop flow, removed 3 redundant places. [2021-03-24 15:24:50,201 INFO L241 Difference]: Finished difference. Result has 52 places, 72 transitions, 369 flow [2021-03-24 15:24:50,201 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=369, PETRI_PLACES=52, PETRI_TRANSITIONS=72} [2021-03-24 15:24:50,202 INFO L343 CegarLoopForPetriNet]: 49 programPoint places, 3 predicate places. [2021-03-24 15:24:50,202 INFO L480 AbstractCegarLoop]: Abstraction has has 52 places, 72 transitions, 369 flow [2021-03-24 15:24:50,202 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 32.285714285714285) internal successors, (226), 7 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:50,202 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:24:50,202 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:24:50,203 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-24 15:24:50,203 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 15:24:50,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:24:50,203 INFO L82 PathProgramCache]: Analyzing trace with hash 627374075, now seen corresponding path program 3 times [2021-03-24 15:24:50,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:24:50,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585402255] [2021-03-24 15:24:50,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:24:50,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:24:50,258 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:50,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:24:50,262 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:50,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:50,267 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:50,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:50,273 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:50,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:24:50,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:24:50,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585402255] [2021-03-24 15:24:50,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:24:50,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 15:24:50,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520437709] [2021-03-24 15:24:50,275 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 15:24:50,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:24:50,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 15:24:50,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-24 15:24:50,276 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 52 [2021-03-24 15:24:50,276 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 72 transitions, 369 flow. Second operand has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:50,276 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:24:50,277 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 52 [2021-03-24 15:24:50,277 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:24:51,972 INFO L129 PetriNetUnfolder]: 11606/19305 cut-off events. [2021-03-24 15:24:51,973 INFO L130 PetriNetUnfolder]: For 18862/20137 co-relation queries the response was YES. [2021-03-24 15:24:52,048 INFO L84 FinitePrefix]: Finished finitePrefix Result has 56850 conditions, 19305 events. 11606/19305 cut-off events. For 18862/20137 co-relation queries the response was YES. Maximal size of possible extension queue 1450. Compared 159410 event pairs, 2854 based on Foata normal form. 254/18319 useless extension candidates. Maximal degree in co-relation 56166. Up to 12335 conditions per place. [2021-03-24 15:24:52,162 INFO L132 encePairwiseOnDemand]: 40/52 looper letters, 74 selfloop transitions, 37 changer transitions 0/132 dead transitions. [2021-03-24 15:24:52,163 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 132 transitions, 941 flow [2021-03-24 15:24:52,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 15:24:52,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 15:24:52,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 199 transitions. [2021-03-24 15:24:52,164 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7653846153846153 [2021-03-24 15:24:52,164 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 199 transitions. [2021-03-24 15:24:52,164 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 199 transitions. [2021-03-24 15:24:52,165 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:24:52,165 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 199 transitions. [2021-03-24 15:24:52,165 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 39.8) internal successors, (199), 5 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:52,166 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 52.0) internal successors, (312), 6 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) [2021-03-24 15:24:52,166 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 52.0) internal successors, (312), 6 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) [2021-03-24 15:24:52,167 INFO L185 Difference]: Start difference. First operand has 52 places, 72 transitions, 369 flow. Second operand 5 states and 199 transitions. [2021-03-24 15:24:52,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 132 transitions, 941 flow [2021-03-24 15:24:52,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 132 transitions, 887 flow, removed 24 selfloop flow, removed 1 redundant places. [2021-03-24 15:24:52,212 INFO L241 Difference]: Finished difference. Result has 57 places, 103 transitions, 674 flow [2021-03-24 15:24:52,212 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=343, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=674, PETRI_PLACES=57, PETRI_TRANSITIONS=103} [2021-03-24 15:24:52,213 INFO L343 CegarLoopForPetriNet]: 49 programPoint places, 8 predicate places. [2021-03-24 15:24:52,213 INFO L480 AbstractCegarLoop]: Abstraction has has 57 places, 103 transitions, 674 flow [2021-03-24 15:24:52,213 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:52,213 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:24:52,213 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:24:52,213 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-24 15:24:52,214 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 15:24:52,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:24:52,214 INFO L82 PathProgramCache]: Analyzing trace with hash 164588415, now seen corresponding path program 4 times [2021-03-24 15:24:52,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:24:52,214 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183196971] [2021-03-24 15:24:52,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:24:52,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:24:52,249 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:52,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:24:52,253 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:52,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:52,257 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:52,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:52,263 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:52,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:52,269 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:52,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:52,277 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:52,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:52,365 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:52,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:52,378 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:52,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:24:52,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:24:52,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183196971] [2021-03-24 15:24:52,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:24:52,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 15:24:52,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620099102] [2021-03-24 15:24:52,380 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 15:24:52,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:24:52,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 15:24:52,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-03-24 15:24:52,381 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 52 [2021-03-24 15:24:52,381 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 103 transitions, 674 flow. Second operand has 9 states, 9 states have (on average 31.77777777777778) internal successors, (286), 9 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:52,381 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:24:52,381 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 52 [2021-03-24 15:24:52,381 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:24:54,406 INFO L129 PetriNetUnfolder]: 12849/21036 cut-off events. [2021-03-24 15:24:54,407 INFO L130 PetriNetUnfolder]: For 35433/37062 co-relation queries the response was YES. [2021-03-24 15:24:54,480 INFO L84 FinitePrefix]: Finished finitePrefix Result has 67773 conditions, 21036 events. 12849/21036 cut-off events. For 35433/37062 co-relation queries the response was YES. Maximal size of possible extension queue 1560. Compared 173728 event pairs, 2712 based on Foata normal form. 729/20165 useless extension candidates. Maximal degree in co-relation 67404. Up to 5628 conditions per place. [2021-03-24 15:24:54,582 INFO L132 encePairwiseOnDemand]: 40/52 looper letters, 55 selfloop transitions, 143 changer transitions 0/219 dead transitions. [2021-03-24 15:24:54,582 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 219 transitions, 1761 flow [2021-03-24 15:24:54,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 15:24:54,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 15:24:54,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 411 transitions. [2021-03-24 15:24:54,584 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7903846153846154 [2021-03-24 15:24:54,585 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 411 transitions. [2021-03-24 15:24:54,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 411 transitions. [2021-03-24 15:24:54,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:24:54,585 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 411 transitions. [2021-03-24 15:24:54,586 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 41.1) internal successors, (411), 10 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:54,589 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:54,589 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:54,589 INFO L185 Difference]: Start difference. First operand has 57 places, 103 transitions, 674 flow. Second operand 10 states and 411 transitions. [2021-03-24 15:24:54,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 219 transitions, 1761 flow [2021-03-24 15:24:54,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 219 transitions, 1755 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 15:24:54,618 INFO L241 Difference]: Finished difference. Result has 69 places, 180 transitions, 1691 flow [2021-03-24 15:24:54,618 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=668, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1691, PETRI_PLACES=69, PETRI_TRANSITIONS=180} [2021-03-24 15:24:54,619 INFO L343 CegarLoopForPetriNet]: 49 programPoint places, 20 predicate places. [2021-03-24 15:24:54,619 INFO L480 AbstractCegarLoop]: Abstraction has has 69 places, 180 transitions, 1691 flow [2021-03-24 15:24:54,619 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 31.77777777777778) internal successors, (286), 9 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:54,619 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:24:54,619 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:24:54,619 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-24 15:24:54,620 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 15:24:54,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:24:54,620 INFO L82 PathProgramCache]: Analyzing trace with hash -1473283373, now seen corresponding path program 5 times [2021-03-24 15:24:54,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:24:54,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862228289] [2021-03-24 15:24:54,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:24:54,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:24:54,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:54,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:24:54,665 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:54,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:54,670 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:54,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:54,675 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:54,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:54,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:54,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:24:54,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:24:54,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862228289] [2021-03-24 15:24:54,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:24:54,681 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-24 15:24:54,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998989115] [2021-03-24 15:24:54,682 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-24 15:24:54,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:24:54,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-24 15:24:54,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-03-24 15:24:54,684 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 52 [2021-03-24 15:24:54,684 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 180 transitions, 1691 flow. Second operand has 6 states, 6 states have (on average 32.666666666666664) internal successors, (196), 6 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:54,685 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:24:54,685 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 52 [2021-03-24 15:24:54,685 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:24:56,864 INFO L129 PetriNetUnfolder]: 15759/26340 cut-off events. [2021-03-24 15:24:56,865 INFO L130 PetriNetUnfolder]: For 99655/104003 co-relation queries the response was YES. [2021-03-24 15:24:56,989 INFO L84 FinitePrefix]: Finished finitePrefix Result has 106271 conditions, 26340 events. 15759/26340 cut-off events. For 99655/104003 co-relation queries the response was YES. Maximal size of possible extension queue 1895. Compared 229008 event pairs, 3403 based on Foata normal form. 1506/25942 useless extension candidates. Maximal degree in co-relation 105721. Up to 8335 conditions per place. [2021-03-24 15:24:57,261 INFO L132 encePairwiseOnDemand]: 40/52 looper letters, 107 selfloop transitions, 148 changer transitions 0/276 dead transitions. [2021-03-24 15:24:57,261 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 276 transitions, 3119 flow [2021-03-24 15:24:57,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-24 15:24:57,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-24 15:24:57,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 244 transitions. [2021-03-24 15:24:57,263 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.782051282051282 [2021-03-24 15:24:57,263 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 244 transitions. [2021-03-24 15:24:57,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 244 transitions. [2021-03-24 15:24:57,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:24:57,263 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 244 transitions. [2021-03-24 15:24:57,264 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 40.666666666666664) internal successors, (244), 6 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:57,265 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 52.0) internal successors, (364), 7 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) [2021-03-24 15:24:57,265 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 52.0) internal successors, (364), 7 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) [2021-03-24 15:24:57,265 INFO L185 Difference]: Start difference. First operand has 69 places, 180 transitions, 1691 flow. Second operand 6 states and 244 transitions. [2021-03-24 15:24:57,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 276 transitions, 3119 flow [2021-03-24 15:24:57,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 276 transitions, 3043 flow, removed 35 selfloop flow, removed 1 redundant places. [2021-03-24 15:24:57,407 INFO L241 Difference]: Finished difference. Result has 76 places, 246 transitions, 2944 flow [2021-03-24 15:24:57,408 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1635, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2944, PETRI_PLACES=76, PETRI_TRANSITIONS=246} [2021-03-24 15:24:57,408 INFO L343 CegarLoopForPetriNet]: 49 programPoint places, 27 predicate places. [2021-03-24 15:24:57,408 INFO L480 AbstractCegarLoop]: Abstraction has has 76 places, 246 transitions, 2944 flow [2021-03-24 15:24:57,408 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 32.666666666666664) internal successors, (196), 6 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:57,408 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:24:57,408 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:24:57,408 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-24 15:24:57,409 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 15:24:57,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:24:57,409 INFO L82 PathProgramCache]: Analyzing trace with hash -1648737157, now seen corresponding path program 6 times [2021-03-24 15:24:57,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:24:57,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705282626] [2021-03-24 15:24:57,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:24:57,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:24:57,421 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:57,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:24:57,424 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:57,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:57,428 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:57,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:57,432 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:57,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:24:57,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:24:57,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705282626] [2021-03-24 15:24:57,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:24:57,433 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 15:24:57,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938148268] [2021-03-24 15:24:57,434 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 15:24:57,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:24:57,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 15:24:57,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-24 15:24:57,434 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 52 [2021-03-24 15:24:57,435 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 246 transitions, 2944 flow. Second operand has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:57,435 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:24:57,435 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 52 [2021-03-24 15:24:57,435 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:24:59,546 INFO L129 PetriNetUnfolder]: 14636/24725 cut-off events. [2021-03-24 15:24:59,546 INFO L130 PetriNetUnfolder]: For 131342/136572 co-relation queries the response was YES. [2021-03-24 15:24:59,641 INFO L84 FinitePrefix]: Finished finitePrefix Result has 116176 conditions, 24725 events. 14636/24725 cut-off events. For 131342/136572 co-relation queries the response was YES. Maximal size of possible extension queue 1767. Compared 214397 event pairs, 4226 based on Foata normal form. 1081/24194 useless extension candidates. Maximal degree in co-relation 115419. Up to 16326 conditions per place. [2021-03-24 15:24:59,773 INFO L132 encePairwiseOnDemand]: 40/52 looper letters, 181 selfloop transitions, 122 changer transitions 0/324 dead transitions. [2021-03-24 15:24:59,773 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 324 transitions, 4533 flow [2021-03-24 15:24:59,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 15:24:59,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 15:24:59,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 199 transitions. [2021-03-24 15:24:59,774 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7653846153846153 [2021-03-24 15:24:59,775 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 199 transitions. [2021-03-24 15:24:59,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 199 transitions. [2021-03-24 15:24:59,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:24:59,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 199 transitions. [2021-03-24 15:24:59,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 39.8) internal successors, (199), 5 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:59,776 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 52.0) internal successors, (312), 6 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) [2021-03-24 15:24:59,776 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 52.0) internal successors, (312), 6 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) [2021-03-24 15:24:59,776 INFO L185 Difference]: Start difference. First operand has 76 places, 246 transitions, 2944 flow. Second operand 5 states and 199 transitions. [2021-03-24 15:24:59,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 324 transitions, 4533 flow [2021-03-24 15:24:59,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 324 transitions, 4490 flow, removed 3 selfloop flow, removed 2 redundant places. [2021-03-24 15:24:59,996 INFO L241 Difference]: Finished difference. Result has 80 places, 292 transitions, 3978 flow [2021-03-24 15:24:59,996 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=2917, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3978, PETRI_PLACES=80, PETRI_TRANSITIONS=292} [2021-03-24 15:24:59,996 INFO L343 CegarLoopForPetriNet]: 49 programPoint places, 31 predicate places. [2021-03-24 15:24:59,996 INFO L480 AbstractCegarLoop]: Abstraction has has 80 places, 292 transitions, 3978 flow [2021-03-24 15:24:59,997 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:59,997 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:24:59,997 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:24:59,997 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-24 15:24:59,997 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 15:24:59,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:24:59,998 INFO L82 PathProgramCache]: Analyzing trace with hash 1380741351, now seen corresponding path program 7 times [2021-03-24 15:24:59,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:24:59,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327774327] [2021-03-24 15:24:59,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:25:00,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:25:00,017 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:00,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:25:00,020 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:00,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:25:00,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:00,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:25:00,030 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:00,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:25:00,037 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:00,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:25:00,042 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:00,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:25:00,048 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:00,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:25:00,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:25:00,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327774327] [2021-03-24 15:25:00,049 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:25:00,049 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 15:25:00,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147308938] [2021-03-24 15:25:00,049 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 15:25:00,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:25:00,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 15:25:00,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-03-24 15:25:00,050 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 52 [2021-03-24 15:25:00,051 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 292 transitions, 3978 flow. Second operand has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:25:00,051 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:25:00,051 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 52 [2021-03-24 15:25:00,051 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:25:02,640 INFO L129 PetriNetUnfolder]: 15687/26593 cut-off events. [2021-03-24 15:25:02,640 INFO L130 PetriNetUnfolder]: For 164518/171337 co-relation queries the response was YES. [2021-03-24 15:25:02,757 INFO L84 FinitePrefix]: Finished finitePrefix Result has 126602 conditions, 26593 events. 15687/26593 cut-off events. For 164518/171337 co-relation queries the response was YES. Maximal size of possible extension queue 1884. Compared 234753 event pairs, 2984 based on Foata normal form. 2706/27478 useless extension candidates. Maximal degree in co-relation 126101. Up to 6404 conditions per place. [2021-03-24 15:25:02,866 INFO L132 encePairwiseOnDemand]: 40/52 looper letters, 81 selfloop transitions, 259 changer transitions 0/361 dead transitions. [2021-03-24 15:25:02,867 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 361 transitions, 5302 flow [2021-03-24 15:25:02,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 15:25:02,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 15:25:02,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 374 transitions. [2021-03-24 15:25:02,868 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7991452991452992 [2021-03-24 15:25:02,868 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 374 transitions. [2021-03-24 15:25:02,868 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 374 transitions. [2021-03-24 15:25:02,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:25:02,869 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 374 transitions. [2021-03-24 15:25:02,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 41.55555555555556) internal successors, (374), 9 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:25:02,870 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 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) [2021-03-24 15:25:02,871 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 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) [2021-03-24 15:25:02,871 INFO L185 Difference]: Start difference. First operand has 80 places, 292 transitions, 3978 flow. Second operand 9 states and 374 transitions. [2021-03-24 15:25:02,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 361 transitions, 5302 flow [2021-03-24 15:25:02,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 361 transitions, 5183 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-24 15:25:03,002 INFO L241 Difference]: Finished difference. Result has 88 places, 318 transitions, 4830 flow [2021-03-24 15:25:03,003 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=3859, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=233, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4830, PETRI_PLACES=88, PETRI_TRANSITIONS=318} [2021-03-24 15:25:03,003 INFO L343 CegarLoopForPetriNet]: 49 programPoint places, 39 predicate places. [2021-03-24 15:25:03,003 INFO L480 AbstractCegarLoop]: Abstraction has has 88 places, 318 transitions, 4830 flow [2021-03-24 15:25:03,003 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:25:03,004 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:25:03,004 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:25:03,004 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-24 15:25:03,004 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 15:25:03,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:25:03,004 INFO L82 PathProgramCache]: Analyzing trace with hash 87126911, now seen corresponding path program 8 times [2021-03-24 15:25:03,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:25:03,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234601221] [2021-03-24 15:25:03,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:25:03,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:25:03,021 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:03,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:25:03,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:03,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:25:03,029 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:03,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:25:03,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:03,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:25:03,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:25:03,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234601221] [2021-03-24 15:25:03,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:25:03,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 15:25:03,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400992595] [2021-03-24 15:25:03,038 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 15:25:03,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:25:03,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 15:25:03,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-24 15:25:03,039 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 52 [2021-03-24 15:25:03,039 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 318 transitions, 4830 flow. Second operand has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:25:03,039 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:25:03,039 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 52 [2021-03-24 15:25:03,039 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:25:05,373 INFO L129 PetriNetUnfolder]: 14315/24628 cut-off events. [2021-03-24 15:25:05,373 INFO L130 PetriNetUnfolder]: For 174388/178516 co-relation queries the response was YES. [2021-03-24 15:25:05,486 INFO L84 FinitePrefix]: Finished finitePrefix Result has 128181 conditions, 24628 events. 14315/24628 cut-off events. For 174388/178516 co-relation queries the response was YES. Maximal size of possible extension queue 1774. Compared 218633 event pairs, 3911 based on Foata normal form. 1019/24127 useless extension candidates. Maximal degree in co-relation 127496. Up to 16334 conditions per place. [2021-03-24 15:25:05,587 INFO L132 encePairwiseOnDemand]: 40/52 looper letters, 207 selfloop transitions, 146 changer transitions 0/374 dead transitions. [2021-03-24 15:25:05,588 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 374 transitions, 6320 flow [2021-03-24 15:25:05,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 15:25:05,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 15:25:05,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 199 transitions. [2021-03-24 15:25:05,589 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7653846153846153 [2021-03-24 15:25:05,589 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 199 transitions. [2021-03-24 15:25:05,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 199 transitions. [2021-03-24 15:25:05,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:25:05,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 199 transitions. [2021-03-24 15:25:05,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 39.8) internal successors, (199), 5 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:25:05,592 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 52.0) internal successors, (312), 6 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) [2021-03-24 15:25:05,592 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 52.0) internal successors, (312), 6 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) [2021-03-24 15:25:05,592 INFO L185 Difference]: Start difference. First operand has 88 places, 318 transitions, 4830 flow. Second operand 5 states and 199 transitions. [2021-03-24 15:25:05,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 374 transitions, 6320 flow [2021-03-24 15:25:05,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 374 transitions, 5722 flow, removed 5 selfloop flow, removed 6 redundant places. [2021-03-24 15:25:05,829 INFO L241 Difference]: Finished difference. Result has 88 places, 345 transitions, 5204 flow [2021-03-24 15:25:05,829 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=4268, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=5204, PETRI_PLACES=88, PETRI_TRANSITIONS=345} [2021-03-24 15:25:05,830 INFO L343 CegarLoopForPetriNet]: 49 programPoint places, 39 predicate places. [2021-03-24 15:25:05,830 INFO L480 AbstractCegarLoop]: Abstraction has has 88 places, 345 transitions, 5204 flow [2021-03-24 15:25:05,830 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:25:05,830 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:25:05,830 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:25:05,830 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-24 15:25:05,830 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 15:25:05,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:25:05,831 INFO L82 PathProgramCache]: Analyzing trace with hash -908603359, now seen corresponding path program 9 times [2021-03-24 15:25:05,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:25:05,831 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536039782] [2021-03-24 15:25:05,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:25:05,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:25:05,843 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:05,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:25:05,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:05,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:25:05,849 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:05,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:25:06,042 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:06,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:25:06,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:25:06,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536039782] [2021-03-24 15:25:06,043 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:25:06,043 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 15:25:06,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953065830] [2021-03-24 15:25:06,043 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 15:25:06,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:25:06,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 15:25:06,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-24 15:25:06,044 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 52 [2021-03-24 15:25:06,044 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 345 transitions, 5204 flow. Second operand has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:25:06,044 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:25:06,045 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 52 [2021-03-24 15:25:06,045 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:25:08,322 INFO L129 PetriNetUnfolder]: 13261/23434 cut-off events. [2021-03-24 15:25:08,323 INFO L130 PetriNetUnfolder]: For 132511/136244 co-relation queries the response was YES. [2021-03-24 15:25:08,426 INFO L84 FinitePrefix]: Finished finitePrefix Result has 113385 conditions, 23434 events. 13261/23434 cut-off events. For 132511/136244 co-relation queries the response was YES. Maximal size of possible extension queue 1792. Compared 212425 event pairs, 4540 based on Foata normal form. 882/22979 useless extension candidates. Maximal degree in co-relation 112640. Up to 15716 conditions per place. [2021-03-24 15:25:08,523 INFO L132 encePairwiseOnDemand]: 40/52 looper letters, 207 selfloop transitions, 164 changer transitions 1/393 dead transitions. [2021-03-24 15:25:08,523 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 393 transitions, 6632 flow [2021-03-24 15:25:08,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 15:25:08,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 15:25:08,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 199 transitions. [2021-03-24 15:25:08,525 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7653846153846153 [2021-03-24 15:25:08,525 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 199 transitions. [2021-03-24 15:25:08,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 199 transitions. [2021-03-24 15:25:08,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:25:08,525 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 199 transitions. [2021-03-24 15:25:08,526 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 39.8) internal successors, (199), 5 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:25:08,526 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 52.0) internal successors, (312), 6 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) [2021-03-24 15:25:08,526 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 52.0) internal successors, (312), 6 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) [2021-03-24 15:25:08,526 INFO L185 Difference]: Start difference. First operand has 88 places, 345 transitions, 5204 flow. Second operand 5 states and 199 transitions. [2021-03-24 15:25:08,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 393 transitions, 6632 flow [2021-03-24 15:25:08,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 393 transitions, 6470 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-24 15:25:08,743 INFO L241 Difference]: Finished difference. Result has 92 places, 367 transitions, 5967 flow [2021-03-24 15:25:08,743 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=4826, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=5967, PETRI_PLACES=92, PETRI_TRANSITIONS=367} [2021-03-24 15:25:08,744 INFO L343 CegarLoopForPetriNet]: 49 programPoint places, 43 predicate places. [2021-03-24 15:25:08,744 INFO L480 AbstractCegarLoop]: Abstraction has has 92 places, 367 transitions, 5967 flow [2021-03-24 15:25:08,744 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:25:08,744 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:25:08,744 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:25:08,744 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-24 15:25:08,744 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 15:25:08,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:25:08,744 INFO L82 PathProgramCache]: Analyzing trace with hash -594442865, now seen corresponding path program 10 times [2021-03-24 15:25:08,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:25:08,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807630487] [2021-03-24 15:25:08,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:25:08,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:25:08,759 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:08,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:25:08,762 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:08,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:25:08,766 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:08,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:25:08,770 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:08,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:25:08,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:08,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:25:08,781 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:08,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:25:08,786 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:08,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:25:08,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:25:08,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807630487] [2021-03-24 15:25:08,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:25:08,787 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 15:25:08,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853726597] [2021-03-24 15:25:08,787 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 15:25:08,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:25:08,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 15:25:08,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-03-24 15:25:08,788 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 52 [2021-03-24 15:25:08,789 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 367 transitions, 5967 flow. Second operand has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:25:08,789 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:25:08,789 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 52 [2021-03-24 15:25:08,789 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:25:11,182 INFO L129 PetriNetUnfolder]: 13323/22861 cut-off events. [2021-03-24 15:25:11,182 INFO L130 PetriNetUnfolder]: For 142435/151229 co-relation queries the response was YES. [2021-03-24 15:25:11,284 INFO L84 FinitePrefix]: Finished finitePrefix Result has 113151 conditions, 22861 events. 13323/22861 cut-off events. For 142435/151229 co-relation queries the response was YES. Maximal size of possible extension queue 1747. Compared 200795 event pairs, 2660 based on Foata normal form. 1903/23317 useless extension candidates. Maximal degree in co-relation 112627. Up to 5531 conditions per place. [2021-03-24 15:25:11,373 INFO L132 encePairwiseOnDemand]: 40/52 looper letters, 43 selfloop transitions, 343 changer transitions 0/407 dead transitions. [2021-03-24 15:25:11,374 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 407 transitions, 7232 flow [2021-03-24 15:25:11,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 15:25:11,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 15:25:11,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 329 transitions. [2021-03-24 15:25:11,376 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7908653846153846 [2021-03-24 15:25:11,376 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 329 transitions. [2021-03-24 15:25:11,376 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 329 transitions. [2021-03-24 15:25:11,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:25:11,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 329 transitions. [2021-03-24 15:25:11,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 41.125) internal successors, (329), 8 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:25:11,378 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 52.0) internal successors, (468), 9 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) [2021-03-24 15:25:11,378 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 52.0) internal successors, (468), 9 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) [2021-03-24 15:25:11,378 INFO L185 Difference]: Start difference. First operand has 92 places, 367 transitions, 5967 flow. Second operand 8 states and 329 transitions. [2021-03-24 15:25:11,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 407 transitions, 7232 flow [2021-03-24 15:25:11,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 407 transitions, 7056 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-24 15:25:11,572 INFO L241 Difference]: Finished difference. Result has 99 places, 383 transitions, 6994 flow [2021-03-24 15:25:11,573 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=5806, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=327, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6994, PETRI_PLACES=99, PETRI_TRANSITIONS=383} [2021-03-24 15:25:11,573 INFO L343 CegarLoopForPetriNet]: 49 programPoint places, 50 predicate places. [2021-03-24 15:25:11,573 INFO L480 AbstractCegarLoop]: Abstraction has has 99 places, 383 transitions, 6994 flow [2021-03-24 15:25:11,573 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:25:11,573 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:25:11,574 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:25:11,574 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-24 15:25:11,574 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 15:25:11,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:25:11,574 INFO L82 PathProgramCache]: Analyzing trace with hash -1254045371, now seen corresponding path program 11 times [2021-03-24 15:25:11,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:25:11,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894616505] [2021-03-24 15:25:11,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:25:11,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:25:11,606 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:11,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:25:11,613 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:11,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:25:11,616 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:11,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:25:11,621 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:11,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:25:11,621 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:11,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:25:11,622 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:11,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:25:11,623 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:11,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:25:11,627 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:11,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:25:11,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:25:11,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894616505] [2021-03-24 15:25:11,629 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:25:11,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-24 15:25:11,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614602916] [2021-03-24 15:25:11,630 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-24 15:25:11,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:25:11,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-24 15:25:11,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-03-24 15:25:11,631 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 52 [2021-03-24 15:25:11,631 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 383 transitions, 6994 flow. Second operand has 6 states, 6 states have (on average 32.666666666666664) internal successors, (196), 6 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:25:11,631 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:25:11,631 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 52 [2021-03-24 15:25:11,631 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:25:13,852 INFO L129 PetriNetUnfolder]: 10880/19663 cut-off events. [2021-03-24 15:25:13,852 INFO L130 PetriNetUnfolder]: For 148377/155050 co-relation queries the response was YES. [2021-03-24 15:25:13,953 INFO L84 FinitePrefix]: Finished finitePrefix Result has 103434 conditions, 19663 events. 10880/19663 cut-off events. For 148377/155050 co-relation queries the response was YES. Maximal size of possible extension queue 1472. Compared 178003 event pairs, 2436 based on Foata normal form. 3080/21544 useless extension candidates. Maximal degree in co-relation 102674. Up to 7610 conditions per place. [2021-03-24 15:25:14,042 INFO L132 encePairwiseOnDemand]: 40/52 looper letters, 124 selfloop transitions, 270 changer transitions 0/415 dead transitions. [2021-03-24 15:25:14,042 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 415 transitions, 7906 flow [2021-03-24 15:25:14,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-24 15:25:14,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-24 15:25:14,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 243 transitions. [2021-03-24 15:25:14,043 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7788461538461539 [2021-03-24 15:25:14,043 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 243 transitions. [2021-03-24 15:25:14,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 243 transitions. [2021-03-24 15:25:14,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:25:14,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 243 transitions. [2021-03-24 15:25:14,044 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 40.5) internal successors, (243), 6 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:25:14,045 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 52.0) internal successors, (364), 7 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) [2021-03-24 15:25:14,045 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 52.0) internal successors, (364), 7 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) [2021-03-24 15:25:14,045 INFO L185 Difference]: Start difference. First operand has 99 places, 383 transitions, 6994 flow. Second operand 6 states and 243 transitions. [2021-03-24 15:25:14,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 415 transitions, 7906 flow [2021-03-24 15:25:14,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 415 transitions, 7343 flow, removed 0 selfloop flow, removed 5 redundant places. [2021-03-24 15:25:14,296 INFO L241 Difference]: Finished difference. Result has 101 places, 382 transitions, 7001 flow [2021-03-24 15:25:14,296 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=5386, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=225, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=7001, PETRI_PLACES=101, PETRI_TRANSITIONS=382} [2021-03-24 15:25:14,296 INFO L343 CegarLoopForPetriNet]: 49 programPoint places, 52 predicate places. [2021-03-24 15:25:14,296 INFO L480 AbstractCegarLoop]: Abstraction has has 101 places, 382 transitions, 7001 flow [2021-03-24 15:25:14,297 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 32.666666666666664) internal successors, (196), 6 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:25:14,297 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:25:14,297 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:25:14,297 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-24 15:25:14,297 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 15:25:14,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:25:14,298 INFO L82 PathProgramCache]: Analyzing trace with hash -1074121253, now seen corresponding path program 12 times [2021-03-24 15:25:14,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:25:14,298 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64745003] [2021-03-24 15:25:14,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:25:14,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:25:14,321 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:14,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:25:14,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:14,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:25:14,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:14,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:25:14,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:14,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:25:14,332 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:14,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:25:14,333 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:14,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:25:14,333 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:14,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:25:14,334 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:14,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:25:14,338 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:14,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:25:14,343 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:14,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:25:14,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:25:14,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64745003] [2021-03-24 15:25:14,344 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:25:14,344 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 15:25:14,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610167965] [2021-03-24 15:25:14,345 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 15:25:14,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:25:14,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 15:25:14,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-03-24 15:25:14,346 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 52 [2021-03-24 15:25:14,346 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 382 transitions, 7001 flow. Second operand has 7 states, 7 states have (on average 32.285714285714285) internal successors, (226), 7 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:25:14,346 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:25:14,346 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 52 [2021-03-24 15:25:14,346 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:25:16,726 INFO L129 PetriNetUnfolder]: 11432/20824 cut-off events. [2021-03-24 15:25:16,727 INFO L130 PetriNetUnfolder]: For 169560/177949 co-relation queries the response was YES. [2021-03-24 15:25:16,823 INFO L84 FinitePrefix]: Finished finitePrefix Result has 112125 conditions, 20824 events. 11432/20824 cut-off events. For 169560/177949 co-relation queries the response was YES. Maximal size of possible extension queue 1523. Compared 191499 event pairs, 2442 based on Foata normal form. 3586/23194 useless extension candidates. Maximal degree in co-relation 111372. Up to 7797 conditions per place. [2021-03-24 15:25:16,902 INFO L132 encePairwiseOnDemand]: 40/52 looper letters, 143 selfloop transitions, 378 changer transitions 2/544 dead transitions. [2021-03-24 15:25:16,902 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 544 transitions, 10772 flow [2021-03-24 15:25:16,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 15:25:16,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 15:25:16,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 329 transitions. [2021-03-24 15:25:16,904 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7908653846153846 [2021-03-24 15:25:16,904 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 329 transitions. [2021-03-24 15:25:16,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 329 transitions. [2021-03-24 15:25:16,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:25:16,904 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 329 transitions. [2021-03-24 15:25:16,905 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 41.125) internal successors, (329), 8 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:25:16,906 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 52.0) internal successors, (468), 9 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) [2021-03-24 15:25:16,906 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 52.0) internal successors, (468), 9 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) [2021-03-24 15:25:16,906 INFO L185 Difference]: Start difference. First operand has 101 places, 382 transitions, 7001 flow. Second operand 8 states and 329 transitions. [2021-03-24 15:25:16,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 544 transitions, 10772 flow [2021-03-24 15:25:17,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 544 transitions, 10300 flow, removed 15 selfloop flow, removed 4 redundant places. [2021-03-24 15:25:17,243 INFO L241 Difference]: Finished difference. Result has 108 places, 489 transitions, 9886 flow [2021-03-24 15:25:17,243 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=6656, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=270, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9886, PETRI_PLACES=108, PETRI_TRANSITIONS=489} [2021-03-24 15:25:17,243 INFO L343 CegarLoopForPetriNet]: 49 programPoint places, 59 predicate places. [2021-03-24 15:25:17,243 INFO L480 AbstractCegarLoop]: Abstraction has has 108 places, 489 transitions, 9886 flow [2021-03-24 15:25:17,244 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 32.285714285714285) internal successors, (226), 7 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:25:17,244 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:25:17,244 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:25:17,244 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-24 15:25:17,244 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 15:25:17,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:25:17,244 INFO L82 PathProgramCache]: Analyzing trace with hash -623689155, now seen corresponding path program 13 times [2021-03-24 15:25:17,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:25:17,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674311044] [2021-03-24 15:25:17,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:25:17,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:25:17,262 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:17,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:25:17,264 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:17,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:25:17,269 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:17,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:25:17,273 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:17,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:25:17,278 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:17,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:25:17,279 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:17,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:25:17,285 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:17,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:25:17,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:17,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:25:17,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:25:17,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674311044] [2021-03-24 15:25:17,291 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:25:17,291 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 15:25:17,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469703925] [2021-03-24 15:25:17,291 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 15:25:17,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:25:17,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 15:25:17,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-03-24 15:25:17,292 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 52 [2021-03-24 15:25:17,292 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 489 transitions, 9886 flow. Second operand has 7 states, 7 states have (on average 32.285714285714285) internal successors, (226), 7 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:25:17,292 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:25:17,292 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 52 [2021-03-24 15:25:17,292 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:25:19,902 INFO L129 PetriNetUnfolder]: 10773/20016 cut-off events. [2021-03-24 15:25:19,902 INFO L130 PetriNetUnfolder]: For 194694/202822 co-relation queries the response was YES. [2021-03-24 15:25:20,011 INFO L84 FinitePrefix]: Finished finitePrefix Result has 112083 conditions, 20016 events. 10773/20016 cut-off events. For 194694/202822 co-relation queries the response was YES. Maximal size of possible extension queue 1437. Compared 187737 event pairs, 2365 based on Foata normal form. 3089/21980 useless extension candidates. Maximal degree in co-relation 111385. Up to 7558 conditions per place. [2021-03-24 15:25:20,098 INFO L132 encePairwiseOnDemand]: 40/52 looper letters, 143 selfloop transitions, 442 changer transitions 2/608 dead transitions. [2021-03-24 15:25:20,098 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 608 transitions, 12932 flow [2021-03-24 15:25:20,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 15:25:20,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 15:25:20,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 328 transitions. [2021-03-24 15:25:20,099 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7884615384615384 [2021-03-24 15:25:20,099 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 328 transitions. [2021-03-24 15:25:20,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 328 transitions. [2021-03-24 15:25:20,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:25:20,100 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 328 transitions. [2021-03-24 15:25:20,100 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) [2021-03-24 15:25:20,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 52.0) internal successors, (468), 9 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) [2021-03-24 15:25:20,101 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 52.0) internal successors, (468), 9 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) [2021-03-24 15:25:20,101 INFO L185 Difference]: Start difference. First operand has 108 places, 489 transitions, 9886 flow. Second operand 8 states and 328 transitions. [2021-03-24 15:25:20,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 608 transitions, 12932 flow [2021-03-24 15:25:20,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 608 transitions, 12380 flow, removed 18 selfloop flow, removed 4 redundant places. [2021-03-24 15:25:20,743 INFO L241 Difference]: Finished difference. Result has 113 places, 553 transitions, 11740 flow [2021-03-24 15:25:20,743 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=9412, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=488, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=375, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11740, PETRI_PLACES=113, PETRI_TRANSITIONS=553} [2021-03-24 15:25:20,743 INFO L343 CegarLoopForPetriNet]: 49 programPoint places, 64 predicate places. [2021-03-24 15:25:20,743 INFO L480 AbstractCegarLoop]: Abstraction has has 113 places, 553 transitions, 11740 flow [2021-03-24 15:25:20,744 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 32.285714285714285) internal successors, (226), 7 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:25:20,744 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:25:20,744 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:25:20,744 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-03-24 15:25:20,744 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 15:25:20,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:25:20,744 INFO L82 PathProgramCache]: Analyzing trace with hash -541382165, now seen corresponding path program 14 times [2021-03-24 15:25:20,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:25:20,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373026830] [2021-03-24 15:25:20,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:25:20,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:25:20,759 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:20,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:25:20,762 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:20,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:25:20,765 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:20,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:25:20,768 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:20,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:25:20,773 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:20,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:25:20,778 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:20,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:25:20,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:20,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:25:20,783 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:20,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:25:20,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:20,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:25:20,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:25:20,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373026830] [2021-03-24 15:25:20,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:25:20,791 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 15:25:20,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803006638] [2021-03-24 15:25:20,791 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 15:25:20,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:25:20,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 15:25:20,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-03-24 15:25:20,792 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 52 [2021-03-24 15:25:20,792 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 553 transitions, 11740 flow. Second operand has 9 states, 9 states have (on average 31.77777777777778) internal successors, (286), 9 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:25:20,792 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:25:20,793 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 52 [2021-03-24 15:25:20,793 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:25:23,631 INFO L129 PetriNetUnfolder]: 11015/20533 cut-off events. [2021-03-24 15:25:23,631 INFO L130 PetriNetUnfolder]: For 224800/233033 co-relation queries the response was YES. [2021-03-24 15:25:23,732 INFO L84 FinitePrefix]: Finished finitePrefix Result has 116410 conditions, 20533 events. 11015/20533 cut-off events. For 224800/233033 co-relation queries the response was YES. Maximal size of possible extension queue 1503. Compared 194119 event pairs, 2216 based on Foata normal form. 2928/22197 useless extension candidates. Maximal degree in co-relation 115805. Up to 4794 conditions per place. [2021-03-24 15:25:23,812 INFO L132 encePairwiseOnDemand]: 40/52 looper letters, 59 selfloop transitions, 535 changer transitions 0/615 dead transitions. [2021-03-24 15:25:23,813 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 615 transitions, 13657 flow [2021-03-24 15:25:23,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 15:25:23,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 15:25:23,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 417 transitions. [2021-03-24 15:25:23,814 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.801923076923077 [2021-03-24 15:25:23,814 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 417 transitions. [2021-03-24 15:25:23,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 417 transitions. [2021-03-24 15:25:23,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:25:23,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 417 transitions. [2021-03-24 15:25:23,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 41.7) internal successors, (417), 10 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:25:23,816 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:25:23,816 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:25:23,816 INFO L185 Difference]: Start difference. First operand has 113 places, 553 transitions, 11740 flow. Second operand 10 states and 417 transitions. [2021-03-24 15:25:23,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 615 transitions, 13657 flow [2021-03-24 15:25:24,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 615 transitions, 13109 flow, removed 15 selfloop flow, removed 5 redundant places. [2021-03-24 15:25:24,288 INFO L241 Difference]: Finished difference. Result has 118 places, 575 transitions, 12768 flow [2021-03-24 15:25:24,289 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=11211, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=553, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=513, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12768, PETRI_PLACES=118, PETRI_TRANSITIONS=575} [2021-03-24 15:25:24,289 INFO L343 CegarLoopForPetriNet]: 49 programPoint places, 69 predicate places. [2021-03-24 15:25:24,289 INFO L480 AbstractCegarLoop]: Abstraction has has 118 places, 575 transitions, 12768 flow [2021-03-24 15:25:24,289 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 31.77777777777778) internal successors, (286), 9 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:25:24,289 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:25:24,289 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:25:24,290 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-03-24 15:25:24,290 INFO L428 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 15:25:24,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:25:24,290 INFO L82 PathProgramCache]: Analyzing trace with hash -1773674895, now seen corresponding path program 15 times [2021-03-24 15:25:24,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:25:24,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197818178] [2021-03-24 15:25:24,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:25:24,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:25:24,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:24,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:25:24,308 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:24,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:25:24,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:24,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:25:24,315 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:24,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:25:24,316 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:24,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:25:24,317 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:24,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:25:24,317 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:24,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:25:24,318 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:24,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:25:24,322 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:24,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:25:24,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:24,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:25:24,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:25:24,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197818178] [2021-03-24 15:25:24,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:25:24,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 15:25:24,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54719428] [2021-03-24 15:25:24,329 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 15:25:24,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:25:24,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 15:25:24,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-03-24 15:25:24,329 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 52 [2021-03-24 15:25:24,330 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 575 transitions, 12768 flow. Second operand has 7 states, 7 states have (on average 32.285714285714285) internal successors, (226), 7 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:25:24,330 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:25:24,330 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 52 [2021-03-24 15:25:24,330 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:25:27,137 INFO L129 PetriNetUnfolder]: 9561/18519 cut-off events. [2021-03-24 15:25:27,137 INFO L130 PetriNetUnfolder]: For 213351/220409 co-relation queries the response was YES. [2021-03-24 15:25:27,233 INFO L84 FinitePrefix]: Finished finitePrefix Result has 112374 conditions, 18519 events. 9561/18519 cut-off events. For 213351/220409 co-relation queries the response was YES. Maximal size of possible extension queue 1179. Compared 177142 event pairs, 2366 based on Foata normal form. 2658/20208 useless extension candidates. Maximal degree in co-relation 111695. Up to 6812 conditions per place. [2021-03-24 15:25:27,308 INFO L132 encePairwiseOnDemand]: 40/52 looper letters, 160 selfloop transitions, 607 changer transitions 0/788 dead transitions. [2021-03-24 15:25:27,308 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 788 transitions, 18832 flow [2021-03-24 15:25:27,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 15:25:27,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 15:25:27,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 328 transitions. [2021-03-24 15:25:27,310 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7884615384615384 [2021-03-24 15:25:27,310 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 328 transitions. [2021-03-24 15:25:27,310 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 328 transitions. [2021-03-24 15:25:27,310 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:25:27,310 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 328 transitions. [2021-03-24 15:25:27,311 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) [2021-03-24 15:25:27,312 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 52.0) internal successors, (468), 9 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) [2021-03-24 15:25:27,312 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 52.0) internal successors, (468), 9 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) [2021-03-24 15:25:27,312 INFO L185 Difference]: Start difference. First operand has 118 places, 575 transitions, 12768 flow. Second operand 8 states and 328 transitions. [2021-03-24 15:25:27,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 788 transitions, 18832 flow [2021-03-24 15:25:27,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 788 transitions, 18375 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-24 15:25:27,897 INFO L241 Difference]: Finished difference. Result has 123 places, 730 transitions, 17660 flow [2021-03-24 15:25:27,897 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=12359, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=574, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=451, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17660, PETRI_PLACES=123, PETRI_TRANSITIONS=730} [2021-03-24 15:25:27,898 INFO L343 CegarLoopForPetriNet]: 49 programPoint places, 74 predicate places. [2021-03-24 15:25:27,898 INFO L480 AbstractCegarLoop]: Abstraction has has 123 places, 730 transitions, 17660 flow [2021-03-24 15:25:27,898 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 32.285714285714285) internal successors, (226), 7 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:25:27,898 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:25:27,898 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:25:27,898 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-03-24 15:25:27,898 INFO L428 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 15:25:27,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:25:27,899 INFO L82 PathProgramCache]: Analyzing trace with hash 2034307463, now seen corresponding path program 16 times [2021-03-24 15:25:27,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:25:27,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121067214] [2021-03-24 15:25:27,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:25:27,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:25:27,912 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:27,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:25:27,915 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:27,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:25:27,918 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:27,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:25:27,922 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:27,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:25:27,927 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:27,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:25:27,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:27,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:25:27,933 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:27,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:25:27,937 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:27,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:25:27,943 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:27,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:25:27,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:25:27,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121067214] [2021-03-24 15:25:27,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:25:27,951 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 15:25:27,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628162452] [2021-03-24 15:25:27,952 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 15:25:27,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:25:27,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 15:25:27,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-03-24 15:25:27,953 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 52 [2021-03-24 15:25:27,953 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 730 transitions, 17660 flow. Second operand has 9 states, 9 states have (on average 31.77777777777778) internal successors, (286), 9 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:25:27,953 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:25:27,953 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 52 [2021-03-24 15:25:27,953 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:25:31,179 INFO L129 PetriNetUnfolder]: 10422/20002 cut-off events. [2021-03-24 15:25:31,180 INFO L130 PetriNetUnfolder]: For 267107/275226 co-relation queries the response was YES. [2021-03-24 15:25:31,302 INFO L84 FinitePrefix]: Finished finitePrefix Result has 127168 conditions, 20002 events. 10422/20002 cut-off events. For 267107/275226 co-relation queries the response was YES. Maximal size of possible extension queue 1343. Compared 192596 event pairs, 2204 based on Foata normal form. 2691/21580 useless extension candidates. Maximal degree in co-relation 126572. Up to 4715 conditions per place. [2021-03-24 15:25:31,381 INFO L132 encePairwiseOnDemand]: 40/52 looper letters, 59 selfloop transitions, 799 changer transitions 0/879 dead transitions. [2021-03-24 15:25:31,381 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 879 transitions, 22460 flow [2021-03-24 15:25:31,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 15:25:31,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 15:25:31,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 417 transitions. [2021-03-24 15:25:31,383 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.801923076923077 [2021-03-24 15:25:31,383 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 417 transitions. [2021-03-24 15:25:31,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 417 transitions. [2021-03-24 15:25:31,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:25:31,383 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 417 transitions. [2021-03-24 15:25:31,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 41.7) internal successors, (417), 10 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:25:31,385 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:25:31,385 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:25:31,385 INFO L185 Difference]: Start difference. First operand has 123 places, 730 transitions, 17660 flow. Second operand 10 states and 417 transitions. [2021-03-24 15:25:31,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 879 transitions, 22460 flow [2021-03-24 15:25:32,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 879 transitions, 22319 flow, removed 15 selfloop flow, removed 2 redundant places. [2021-03-24 15:25:32,421 INFO L241 Difference]: Finished difference. Result has 131 places, 839 transitions, 21989 flow [2021-03-24 15:25:32,421 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=17548, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=730, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=690, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=21989, PETRI_PLACES=131, PETRI_TRANSITIONS=839} [2021-03-24 15:25:32,421 INFO L343 CegarLoopForPetriNet]: 49 programPoint places, 82 predicate places. [2021-03-24 15:25:32,422 INFO L480 AbstractCegarLoop]: Abstraction has has 131 places, 839 transitions, 21989 flow [2021-03-24 15:25:32,422 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 31.77777777777778) internal successors, (286), 9 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:25:32,422 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:25:32,422 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:25:32,422 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-03-24 15:25:32,422 INFO L428 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 15:25:32,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:25:32,423 INFO L82 PathProgramCache]: Analyzing trace with hash -671285655, now seen corresponding path program 17 times [2021-03-24 15:25:32,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:25:32,423 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352353772] [2021-03-24 15:25:32,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:25:32,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:25:32,439 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:32,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:25:32,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:32,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:25:32,445 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:32,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:25:32,449 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:32,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:25:32,450 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:32,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:25:32,450 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:32,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:25:32,455 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:32,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:25:32,456 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:32,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:25:32,456 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:32,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:25:32,461 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:32,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:25:32,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:25:32,462 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352353772] [2021-03-24 15:25:32,462 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:25:32,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 15:25:32,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952855600] [2021-03-24 15:25:32,463 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 15:25:32,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:25:32,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 15:25:32,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-03-24 15:25:32,464 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 52 [2021-03-24 15:25:32,464 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 839 transitions, 21989 flow. Second operand has 7 states, 7 states have (on average 32.285714285714285) internal successors, (226), 7 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:25:32,464 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:25:32,464 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 52 [2021-03-24 15:25:32,464 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:25:36,045 INFO L129 PetriNetUnfolder]: 10443/20126 cut-off events. [2021-03-24 15:25:36,045 INFO L130 PetriNetUnfolder]: For 316122/324227 co-relation queries the response was YES. [2021-03-24 15:25:36,173 INFO L84 FinitePrefix]: Finished finitePrefix Result has 136070 conditions, 20126 events. 10443/20126 cut-off events. For 316122/324227 co-relation queries the response was YES. Maximal size of possible extension queue 1364. Compared 194972 event pairs, 2247 based on Foata normal form. 2630/21669 useless extension candidates. Maximal degree in co-relation 135466. Up to 4706 conditions per place. [2021-03-24 15:25:36,257 INFO L132 encePairwiseOnDemand]: 40/52 looper letters, 97 selfloop transitions, 812 changer transitions 0/930 dead transitions. [2021-03-24 15:25:36,257 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 930 transitions, 25348 flow [2021-03-24 15:25:36,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 15:25:36,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 15:25:36,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 331 transitions. [2021-03-24 15:25:36,262 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7956730769230769 [2021-03-24 15:25:36,262 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 331 transitions. [2021-03-24 15:25:36,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 331 transitions. [2021-03-24 15:25:36,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:25:36,262 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 331 transitions. [2021-03-24 15:25:36,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 41.375) internal successors, (331), 8 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:25:36,263 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 52.0) internal successors, (468), 9 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) [2021-03-24 15:25:36,263 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 52.0) internal successors, (468), 9 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) [2021-03-24 15:25:36,264 INFO L185 Difference]: Start difference. First operand has 131 places, 839 transitions, 21989 flow. Second operand 8 states and 331 transitions. [2021-03-24 15:25:36,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 930 transitions, 25348 flow [2021-03-24 15:25:37,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 930 transitions, 25212 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-24 15:25:37,398 INFO L241 Difference]: Finished difference. Result has 137 places, 885 transitions, 24751 flow [2021-03-24 15:25:37,399 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=21857, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=839, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=766, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=24751, PETRI_PLACES=137, PETRI_TRANSITIONS=885} [2021-03-24 15:25:37,399 INFO L343 CegarLoopForPetriNet]: 49 programPoint places, 88 predicate places. [2021-03-24 15:25:37,399 INFO L480 AbstractCegarLoop]: Abstraction has has 137 places, 885 transitions, 24751 flow [2021-03-24 15:25:37,399 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 32.285714285714285) internal successors, (226), 7 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:25:37,400 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:25:37,400 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:25:37,400 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-03-24 15:25:37,400 INFO L428 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 15:25:37,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:25:37,400 INFO L82 PathProgramCache]: Analyzing trace with hash -621151037, now seen corresponding path program 18 times [2021-03-24 15:25:37,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:25:37,400 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261347081] [2021-03-24 15:25:37,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:25:37,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:25:37,414 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:37,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:25:37,416 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:37,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:25:37,419 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:37,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:25:37,423 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:37,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:25:37,424 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:37,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:25:37,424 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:37,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:25:37,429 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:37,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:25:37,433 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:37,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:25:37,439 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:37,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:25:37,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:25:37,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261347081] [2021-03-24 15:25:37,439 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:25:37,440 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 15:25:37,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771731821] [2021-03-24 15:25:37,440 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 15:25:37,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:25:37,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 15:25:37,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-03-24 15:25:37,441 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 52 [2021-03-24 15:25:37,441 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 885 transitions, 24751 flow. Second operand has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:25:37,441 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:25:37,441 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 52 [2021-03-24 15:25:37,441 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:25:41,297 INFO L129 PetriNetUnfolder]: 10007/19818 cut-off events. [2021-03-24 15:25:41,297 INFO L130 PetriNetUnfolder]: For 363545/371930 co-relation queries the response was YES. [2021-03-24 15:25:41,409 INFO L84 FinitePrefix]: Finished finitePrefix Result has 142440 conditions, 19818 events. 10007/19818 cut-off events. For 363545/371930 co-relation queries the response was YES. Maximal size of possible extension queue 1339. Compared 196073 event pairs, 2165 based on Foata normal form. 2861/21679 useless extension candidates. Maximal degree in co-relation 141797. Up to 4724 conditions per place. [2021-03-24 15:25:41,489 INFO L132 encePairwiseOnDemand]: 40/52 looper letters, 94 selfloop transitions, 971 changer transitions 19/1105 dead transitions. [2021-03-24 15:25:41,490 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 1105 transitions, 32750 flow [2021-03-24 15:25:41,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 15:25:41,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 15:25:41,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 374 transitions. [2021-03-24 15:25:41,491 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7991452991452992 [2021-03-24 15:25:41,491 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 374 transitions. [2021-03-24 15:25:41,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 374 transitions. [2021-03-24 15:25:41,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:25:41,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 374 transitions. [2021-03-24 15:25:41,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 41.55555555555556) internal successors, (374), 9 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:25:41,492 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 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) [2021-03-24 15:25:41,493 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 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) [2021-03-24 15:25:41,493 INFO L185 Difference]: Start difference. First operand has 137 places, 885 transitions, 24751 flow. Second operand 9 states and 374 transitions. [2021-03-24 15:25:41,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 1105 transitions, 32750 flow [2021-03-24 15:25:42,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 1105 transitions, 32162 flow, removed 26 selfloop flow, removed 5 redundant places. [2021-03-24 15:25:42,820 INFO L241 Difference]: Finished difference. Result has 143 places, 1044 transitions, 31117 flow [2021-03-24 15:25:42,821 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=23898, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=873, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=787, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=31117, PETRI_PLACES=143, PETRI_TRANSITIONS=1044} [2021-03-24 15:25:42,821 INFO L343 CegarLoopForPetriNet]: 49 programPoint places, 94 predicate places. [2021-03-24 15:25:42,821 INFO L480 AbstractCegarLoop]: Abstraction has has 143 places, 1044 transitions, 31117 flow [2021-03-24 15:25:42,822 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:25:42,822 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:25:42,822 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:25:42,822 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-03-24 15:25:42,822 INFO L428 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 15:25:42,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:25:42,822 INFO L82 PathProgramCache]: Analyzing trace with hash 1655162399, now seen corresponding path program 19 times [2021-03-24 15:25:42,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:25:42,823 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825315236] [2021-03-24 15:25:42,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:25:42,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:25:42,859 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:42,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:25:42,865 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:42,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:25:42,869 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:42,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:25:42,873 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:42,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:25:42,878 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:42,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:25:42,879 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:42,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:25:42,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:42,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:25:42,889 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:42,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:25:42,902 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:42,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:25:42,907 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:42,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:25:42,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:25:42,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825315236] [2021-03-24 15:25:42,908 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:25:42,908 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 15:25:42,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155004803] [2021-03-24 15:25:42,909 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 15:25:42,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:25:42,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 15:25:42,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-03-24 15:25:42,909 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 52 [2021-03-24 15:25:42,909 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 1044 transitions, 31117 flow. Second operand has 9 states, 9 states have (on average 31.77777777777778) internal successors, (286), 9 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:25:42,909 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:25:42,910 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 52 [2021-03-24 15:25:42,910 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:25:47,445 INFO L129 PetriNetUnfolder]: 10107/20269 cut-off events. [2021-03-24 15:25:47,446 INFO L130 PetriNetUnfolder]: For 417822/427253 co-relation queries the response was YES. [2021-03-24 15:25:47,571 INFO L84 FinitePrefix]: Finished finitePrefix Result has 151273 conditions, 20269 events. 10107/20269 cut-off events. For 417822/427253 co-relation queries the response was YES. Maximal size of possible extension queue 1427. Compared 204488 event pairs, 2162 based on Foata normal form. 2775/22046 useless extension candidates. Maximal degree in co-relation 150624. Up to 4839 conditions per place. [2021-03-24 15:25:47,655 INFO L132 encePairwiseOnDemand]: 40/52 looper letters, 127 selfloop transitions, 1053 changer transitions 13/1214 dead transitions. [2021-03-24 15:25:47,656 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 1214 transitions, 36840 flow [2021-03-24 15:25:47,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-03-24 15:25:47,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-03-24 15:25:47,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 500 transitions. [2021-03-24 15:25:47,657 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8012820512820513 [2021-03-24 15:25:47,657 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 500 transitions. [2021-03-24 15:25:47,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 500 transitions. [2021-03-24 15:25:47,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:25:47,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 500 transitions. [2021-03-24 15:25:47,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 41.666666666666664) internal successors, (500), 12 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:25:47,659 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 52.0) internal successors, (676), 13 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:25:47,659 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 52.0) internal successors, (676), 13 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:25:47,659 INFO L185 Difference]: Start difference. First operand has 143 places, 1044 transitions, 31117 flow. Second operand 12 states and 500 transitions. [2021-03-24 15:25:47,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 1214 transitions, 36840 flow [2021-03-24 15:25:49,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 1214 transitions, 36516 flow, removed 7 selfloop flow, removed 3 redundant places. [2021-03-24 15:25:49,178 INFO L241 Difference]: Finished difference. Result has 154 places, 1126 transitions, 35239 flow [2021-03-24 15:25:49,179 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=30856, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1044, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=959, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=35239, PETRI_PLACES=154, PETRI_TRANSITIONS=1126} [2021-03-24 15:25:49,180 INFO L343 CegarLoopForPetriNet]: 49 programPoint places, 105 predicate places. [2021-03-24 15:25:49,180 INFO L480 AbstractCegarLoop]: Abstraction has has 154 places, 1126 transitions, 35239 flow [2021-03-24 15:25:49,180 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 31.77777777777778) internal successors, (286), 9 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:25:49,180 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:25:49,180 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:25:49,180 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-03-24 15:25:49,180 INFO L428 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 15:25:49,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:25:49,181 INFO L82 PathProgramCache]: Analyzing trace with hash -589574641, now seen corresponding path program 20 times [2021-03-24 15:25:49,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:25:49,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582057102] [2021-03-24 15:25:49,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:25:49,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:25:49,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:49,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:25:49,195 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:49,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:25:49,199 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:49,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:25:49,202 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:49,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:25:49,203 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:49,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:25:49,204 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:49,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:25:49,204 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:49,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:25:49,205 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:49,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:25:49,205 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:49,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:25:49,210 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:49,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:25:49,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:25:49,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582057102] [2021-03-24 15:25:49,210 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:25:49,210 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-24 15:25:49,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978699303] [2021-03-24 15:25:49,211 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-24 15:25:49,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:25:49,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-24 15:25:49,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-03-24 15:25:49,212 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 52 [2021-03-24 15:25:49,212 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 1126 transitions, 35239 flow. Second operand has 6 states, 6 states have (on average 32.666666666666664) internal successors, (196), 6 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:25:49,212 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:25:49,212 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 52 [2021-03-24 15:25:49,212 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:25:53,696 INFO L129 PetriNetUnfolder]: 9803/19747 cut-off events. [2021-03-24 15:25:53,696 INFO L130 PetriNetUnfolder]: For 459437/468041 co-relation queries the response was YES. [2021-03-24 15:25:53,806 INFO L84 FinitePrefix]: Finished finitePrefix Result has 153601 conditions, 19747 events. 9803/19747 cut-off events. For 459437/468041 co-relation queries the response was YES. Maximal size of possible extension queue 1359. Compared 198890 event pairs, 2421 based on Foata normal form. 2207/21008 useless extension candidates. Maximal degree in co-relation 152915. Up to 7084 conditions per place. [2021-03-24 15:25:53,886 INFO L132 encePairwiseOnDemand]: 40/52 looper letters, 213 selfloop transitions, 966 changer transitions 7/1207 dead transitions. [2021-03-24 15:25:53,887 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 1207 transitions, 39593 flow [2021-03-24 15:25:53,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-24 15:25:53,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-24 15:25:53,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 243 transitions. [2021-03-24 15:25:53,888 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7788461538461539 [2021-03-24 15:25:53,888 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 243 transitions. [2021-03-24 15:25:53,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 243 transitions. [2021-03-24 15:25:53,888 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:25:53,888 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 243 transitions. [2021-03-24 15:25:53,888 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 40.5) internal successors, (243), 6 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:25:53,889 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 52.0) internal successors, (364), 7 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) [2021-03-24 15:25:53,889 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 52.0) internal successors, (364), 7 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) [2021-03-24 15:25:53,889 INFO L185 Difference]: Start difference. First operand has 154 places, 1126 transitions, 35239 flow. Second operand 6 states and 243 transitions. [2021-03-24 15:25:53,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 1207 transitions, 39593 flow [2021-03-24 15:25:55,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 1207 transitions, 39223 flow, removed 13 selfloop flow, removed 4 redundant places. [2021-03-24 15:25:55,296 INFO L241 Difference]: Finished difference. Result has 157 places, 1157 transitions, 38618 flow [2021-03-24 15:25:55,297 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=34704, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=927, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=38618, PETRI_PLACES=157, PETRI_TRANSITIONS=1157} [2021-03-24 15:25:55,297 INFO L343 CegarLoopForPetriNet]: 49 programPoint places, 108 predicate places. [2021-03-24 15:25:55,297 INFO L480 AbstractCegarLoop]: Abstraction has has 157 places, 1157 transitions, 38618 flow [2021-03-24 15:25:55,297 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 32.666666666666664) internal successors, (196), 6 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:25:55,297 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:25:55,297 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:25:55,297 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-03-24 15:25:55,297 INFO L428 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 15:25:55,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:25:55,298 INFO L82 PathProgramCache]: Analyzing trace with hash -637875099, now seen corresponding path program 21 times [2021-03-24 15:25:55,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:25:55,298 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727270094] [2021-03-24 15:25:55,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:25:55,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:25:55,308 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:55,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:25:55,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:55,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:25:55,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:55,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:25:55,317 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:55,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:25:55,322 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:55,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:25:55,326 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:55,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:25:55,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:55,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:25:55,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:25:55,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:25:55,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:25:55,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727270094] [2021-03-24 15:25:55,338 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:25:55,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 15:25:55,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641656305] [2021-03-24 15:25:55,338 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 15:25:55,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:25:55,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 15:25:55,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-03-24 15:25:55,339 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 52 [2021-03-24 15:25:55,340 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 1157 transitions, 38618 flow. Second operand has 9 states, 9 states have (on average 31.77777777777778) internal successors, (286), 9 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:25:55,340 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:25:55,340 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 52 [2021-03-24 15:25:55,340 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:26:00,074 INFO L129 PetriNetUnfolder]: 9609/19577 cut-off events. [2021-03-24 15:26:00,074 INFO L130 PetriNetUnfolder]: For 510223/518727 co-relation queries the response was YES. [2021-03-24 15:26:00,195 INFO L84 FinitePrefix]: Finished finitePrefix Result has 157084 conditions, 19577 events. 9609/19577 cut-off events. For 510223/518727 co-relation queries the response was YES. Maximal size of possible extension queue 1443. Compared 200214 event pairs, 2154 based on Foata normal form. 2536/21130 useless extension candidates. Maximal degree in co-relation 156502. Up to 4657 conditions per place. [2021-03-24 15:26:00,276 INFO L132 encePairwiseOnDemand]: 40/52 looper letters, 118 selfloop transitions, 1138 changer transitions 26/1303 dead transitions. [2021-03-24 15:26:00,276 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 1303 transitions, 44001 flow [2021-03-24 15:26:00,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-03-24 15:26:00,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-03-24 15:26:00,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 500 transitions. [2021-03-24 15:26:00,278 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8012820512820513 [2021-03-24 15:26:00,278 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 500 transitions. [2021-03-24 15:26:00,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 500 transitions. [2021-03-24 15:26:00,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:26:00,278 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 500 transitions. [2021-03-24 15:26:00,278 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 41.666666666666664) internal successors, (500), 12 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:26:00,279 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 52.0) internal successors, (676), 13 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:26:00,279 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 52.0) internal successors, (676), 13 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:26:00,279 INFO L185 Difference]: Start difference. First operand has 157 places, 1157 transitions, 38618 flow. Second operand 12 states and 500 transitions. [2021-03-24 15:26:00,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 1303 transitions, 44001 flow [2021-03-24 15:26:01,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 1303 transitions, 42539 flow, removed 20 selfloop flow, removed 5 redundant places. [2021-03-24 15:26:01,893 INFO L241 Difference]: Finished difference. Result has 166 places, 1213 transitions, 40845 flow [2021-03-24 15:26:01,893 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=37264, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1056, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=40845, PETRI_PLACES=166, PETRI_TRANSITIONS=1213} [2021-03-24 15:26:01,893 INFO L343 CegarLoopForPetriNet]: 49 programPoint places, 117 predicate places. [2021-03-24 15:26:01,894 INFO L480 AbstractCegarLoop]: Abstraction has has 166 places, 1213 transitions, 40845 flow [2021-03-24 15:26:01,894 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 31.77777777777778) internal successors, (286), 9 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:26:01,894 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:26:01,894 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:26:01,894 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-03-24 15:26:01,894 INFO L428 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 15:26:01,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:26:01,895 INFO L82 PathProgramCache]: Analyzing trace with hash 252829501, now seen corresponding path program 22 times [2021-03-24 15:26:01,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:26:01,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312042063] [2021-03-24 15:26:01,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:26:01,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:26:01,908 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:26:01,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:26:01,911 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:26:01,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:26:01,914 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:26:01,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:26:01,917 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:26:01,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:26:01,921 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:26:01,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:26:01,926 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:26:01,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:26:01,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:26:01,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312042063] [2021-03-24 15:26:01,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:26:01,927 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 15:26:01,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643842944] [2021-03-24 15:26:01,927 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 15:26:01,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:26:01,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 15:26:01,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-03-24 15:26:01,928 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 52 [2021-03-24 15:26:01,928 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 1213 transitions, 40845 flow. Second operand has 7 states, 7 states have (on average 32.285714285714285) internal successors, (226), 7 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:26:01,928 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:26:01,928 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 52 [2021-03-24 15:26:01,928 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:26:06,396 INFO L129 PetriNetUnfolder]: 8517/18103 cut-off events. [2021-03-24 15:26:06,397 INFO L130 PetriNetUnfolder]: For 486699/493216 co-relation queries the response was YES. [2021-03-24 15:26:06,709 INFO L84 FinitePrefix]: Finished finitePrefix Result has 145642 conditions, 18103 events. 8517/18103 cut-off events. For 486699/493216 co-relation queries the response was YES. Maximal size of possible extension queue 1298. Compared 188150 event pairs, 2333 based on Foata normal form. 1805/19134 useless extension candidates. Maximal degree in co-relation 144964. Up to 6528 conditions per place. [2021-03-24 15:26:06,780 INFO L132 encePairwiseOnDemand]: 40/52 looper letters, 270 selfloop transitions, 1021 changer transitions 13/1325 dead transitions. [2021-03-24 15:26:06,780 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 1325 transitions, 46306 flow [2021-03-24 15:26:06,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 15:26:06,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 15:26:06,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 328 transitions. [2021-03-24 15:26:06,781 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7884615384615384 [2021-03-24 15:26:06,781 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 328 transitions. [2021-03-24 15:26:06,781 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 328 transitions. [2021-03-24 15:26:06,781 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:26:06,781 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 328 transitions. [2021-03-24 15:26:06,782 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) [2021-03-24 15:26:06,782 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 52.0) internal successors, (468), 9 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) [2021-03-24 15:26:06,783 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 52.0) internal successors, (468), 9 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) [2021-03-24 15:26:06,783 INFO L185 Difference]: Start difference. First operand has 166 places, 1213 transitions, 40845 flow. Second operand 8 states and 328 transitions. [2021-03-24 15:26:06,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 1325 transitions, 46306 flow [2021-03-24 15:26:08,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 1325 transitions, 44316 flow, removed 4 selfloop flow, removed 6 redundant places. [2021-03-24 15:26:08,203 INFO L241 Difference]: Finished difference. Result has 169 places, 1248 transitions, 42579 flow [2021-03-24 15:26:08,203 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=37935, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=943, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=42579, PETRI_PLACES=169, PETRI_TRANSITIONS=1248} [2021-03-24 15:26:08,203 INFO L343 CegarLoopForPetriNet]: 49 programPoint places, 120 predicate places. [2021-03-24 15:26:08,203 INFO L480 AbstractCegarLoop]: Abstraction has has 169 places, 1248 transitions, 42579 flow [2021-03-24 15:26:08,204 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 32.285714285714285) internal successors, (226), 7 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:26:08,204 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:26:08,204 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:26:08,204 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-03-24 15:26:08,204 INFO L428 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 15:26:08,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:26:08,204 INFO L82 PathProgramCache]: Analyzing trace with hash 1743501399, now seen corresponding path program 23 times [2021-03-24 15:26:08,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:26:08,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136642230] [2021-03-24 15:26:08,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:26:08,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:26:08,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:26:08,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:26:08,226 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:26:08,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:26:08,229 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:26:08,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:26:08,235 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:26:08,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:26:08,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:26:08,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:26:08,241 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:26:08,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:26:08,242 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:26:08,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:26:08,242 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:26:08,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:26:08,247 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:26:08,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:26:08,252 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:26:08,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:26:08,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:26:08,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136642230] [2021-03-24 15:26:08,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:26:08,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 15:26:08,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210107584] [2021-03-24 15:26:08,255 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 15:26:08,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:26:08,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 15:26:08,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-03-24 15:26:08,256 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 52 [2021-03-24 15:26:08,256 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 1248 transitions, 42579 flow. Second operand has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:26:08,256 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:26:08,256 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 52 [2021-03-24 15:26:08,256 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:26:12,990 INFO L129 PetriNetUnfolder]: 8418/17891 cut-off events. [2021-03-24 15:26:12,991 INFO L130 PetriNetUnfolder]: For 487130/493316 co-relation queries the response was YES. [2021-03-24 15:26:13,094 INFO L84 FinitePrefix]: Finished finitePrefix Result has 147278 conditions, 17891 events. 8418/17891 cut-off events. For 487130/493316 co-relation queries the response was YES. Maximal size of possible extension queue 1337. Compared 186243 event pairs, 2028 based on Foata normal form. 1669/18743 useless extension candidates. Maximal degree in co-relation 146655. Up to 4318 conditions per place. [2021-03-24 15:26:13,162 INFO L132 encePairwiseOnDemand]: 40/52 looper letters, 99 selfloop transitions, 1156 changer transitions 71/1347 dead transitions. [2021-03-24 15:26:13,162 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 1347 transitions, 47411 flow [2021-03-24 15:26:13,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 15:26:13,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 15:26:13,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 373 transitions. [2021-03-24 15:26:13,163 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7970085470085471 [2021-03-24 15:26:13,163 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 373 transitions. [2021-03-24 15:26:13,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 373 transitions. [2021-03-24 15:26:13,164 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:26:13,164 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 373 transitions. [2021-03-24 15:26:13,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 41.44444444444444) internal successors, (373), 9 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:26:13,165 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 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) [2021-03-24 15:26:13,165 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 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) [2021-03-24 15:26:13,165 INFO L185 Difference]: Start difference. First operand has 169 places, 1248 transitions, 42579 flow. Second operand 9 states and 373 transitions. [2021-03-24 15:26:13,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 1347 transitions, 47411 flow [2021-03-24 15:26:14,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 1347 transitions, 47028 flow, removed 17 selfloop flow, removed 3 redundant places. [2021-03-24 15:26:14,978 INFO L241 Difference]: Finished difference. Result has 176 places, 1233 transitions, 44364 flow [2021-03-24 15:26:14,979 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=42228, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=44364, PETRI_PLACES=176, PETRI_TRANSITIONS=1233} [2021-03-24 15:26:14,979 INFO L343 CegarLoopForPetriNet]: 49 programPoint places, 127 predicate places. [2021-03-24 15:26:14,979 INFO L480 AbstractCegarLoop]: Abstraction has has 176 places, 1233 transitions, 44364 flow [2021-03-24 15:26:14,979 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:26:14,979 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:26:14,979 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:26:14,979 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-03-24 15:26:14,979 INFO L428 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 15:26:14,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:26:14,980 INFO L82 PathProgramCache]: Analyzing trace with hash 1559941427, now seen corresponding path program 24 times [2021-03-24 15:26:14,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:26:14,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127409536] [2021-03-24 15:26:14,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:26:14,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:26:14,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:26:14,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:26:14,999 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:26:14,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:26:15,002 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:26:15,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:26:15,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:26:15,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:26:15,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:26:15,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:26:15,007 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:26:15,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:26:15,007 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:26:15,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 15:26:15,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:26:15,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:26:15,012 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:26:15,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:26:15,016 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:26:15,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:26:15,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:26:15,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127409536] [2021-03-24 15:26:15,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:26:15,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 15:26:15,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365905362] [2021-03-24 15:26:15,017 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 15:26:15,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:26:15,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 15:26:15,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-24 15:26:15,018 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 52 [2021-03-24 15:26:15,018 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 1233 transitions, 44364 flow. Second operand has 7 states, 7 states have (on average 32.285714285714285) internal successors, (226), 7 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:26:15,019 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:26:15,019 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 52 [2021-03-24 15:26:15,019 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:26:20,266 INFO L129 PetriNetUnfolder]: 9393/19816 cut-off events. [2021-03-24 15:26:20,266 INFO L130 PetriNetUnfolder]: For 559556/565363 co-relation queries the response was YES. [2021-03-24 15:26:20,406 INFO L84 FinitePrefix]: Finished finitePrefix Result has 161049 conditions, 19816 events. 9393/19816 cut-off events. For 559556/565363 co-relation queries the response was YES. Maximal size of possible extension queue 1378. Compared 208580 event pairs, 1308 based on Foata normal form. 1425/20228 useless extension candidates. Maximal degree in co-relation 160426. Up to 5280 conditions per place. [2021-03-24 15:26:20,483 INFO L132 encePairwiseOnDemand]: 40/52 looper letters, 124 selfloop transitions, 1169 changer transitions 1/1315 dead transitions. [2021-03-24 15:26:20,484 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 1315 transitions, 48060 flow [2021-03-24 15:26:20,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 15:26:20,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 15:26:20,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 288 transitions. [2021-03-24 15:26:20,484 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7912087912087912 [2021-03-24 15:26:20,485 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 288 transitions. [2021-03-24 15:26:20,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 288 transitions. [2021-03-24 15:26:20,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:26:20,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 288 transitions. [2021-03-24 15:26:20,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 41.142857142857146) internal successors, (288), 7 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:26:20,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 52.0) internal successors, (416), 8 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:26:20,485 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 52.0) internal successors, (416), 8 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:26:20,486 INFO L185 Difference]: Start difference. First operand has 176 places, 1233 transitions, 44364 flow. Second operand 7 states and 288 transitions. [2021-03-24 15:26:20,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 1315 transitions, 48060 flow [2021-03-24 15:26:22,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 1315 transitions, 46930 flow, removed 5 selfloop flow, removed 5 redundant places. [2021-03-24 15:26:22,772 INFO L241 Difference]: Finished difference. Result has 180 places, 1267 transitions, 47716 flow [2021-03-24 15:26:22,773 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=43245, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=47716, PETRI_PLACES=180, PETRI_TRANSITIONS=1267} [2021-03-24 15:26:22,773 INFO L343 CegarLoopForPetriNet]: 49 programPoint places, 131 predicate places. [2021-03-24 15:26:22,773 INFO L480 AbstractCegarLoop]: Abstraction has has 180 places, 1267 transitions, 47716 flow [2021-03-24 15:26:22,773 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 32.285714285714285) internal successors, (226), 7 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:26:22,773 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:26:22,773 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:26:22,773 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-03-24 15:26:22,774 INFO L428 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 15:26:22,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:26:22,774 INFO L82 PathProgramCache]: Analyzing trace with hash 1292998737, now seen corresponding path program 25 times [2021-03-24 15:26:22,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:26:22,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686851287] [2021-03-24 15:26:22,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:26:22,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:26:22,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:26:22,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:26:22,786 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:26:22,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:26:22,789 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:26:22,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:26:22,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:26:22,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:26:22,797 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:26:22,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:26:22,802 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:26:22,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:26:22,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:26:22,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:26:22,807 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:26:22,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:26:22,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:26:22,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:26:22,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:26:22,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:26:22,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:26:22,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686851287] [2021-03-24 15:26:22,820 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:26:22,820 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-24 15:26:22,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408980489] [2021-03-24 15:26:22,820 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 15:26:22,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:26:22,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 15:26:22,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-03-24 15:26:22,821 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 52 [2021-03-24 15:26:22,821 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 1267 transitions, 47716 flow. Second operand has 10 states, 10 states have (on average 31.6) internal successors, (316), 10 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) [2021-03-24 15:26:22,821 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:26:22,821 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 52 [2021-03-24 15:26:22,821 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:26:28,373 INFO L129 PetriNetUnfolder]: 9256/19578 cut-off events. [2021-03-24 15:26:28,373 INFO L130 PetriNetUnfolder]: For 649059/655138 co-relation queries the response was YES. [2021-03-24 15:26:28,509 INFO L84 FinitePrefix]: Finished finitePrefix Result has 170815 conditions, 19578 events. 9256/19578 cut-off events. For 649059/655138 co-relation queries the response was YES. Maximal size of possible extension queue 1437. Compared 206001 event pairs, 1732 based on Foata normal form. 1496/20184 useless extension candidates. Maximal degree in co-relation 170166. Up to 4849 conditions per place. [2021-03-24 15:26:28,584 INFO L132 encePairwiseOnDemand]: 40/52 looper letters, 101 selfloop transitions, 1093 changer transitions 156/1371 dead transitions. [2021-03-24 15:26:28,584 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 1371 transitions, 52281 flow [2021-03-24 15:26:28,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-24 15:26:28,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-24 15:26:28,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 540 transitions. [2021-03-24 15:26:28,585 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7988165680473372 [2021-03-24 15:26:28,585 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 540 transitions. [2021-03-24 15:26:28,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 540 transitions. [2021-03-24 15:26:28,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:26:28,586 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 540 transitions. [2021-03-24 15:26:28,587 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 41.53846153846154) internal successors, (540), 13 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:26:28,588 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 52.0) internal successors, (728), 14 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:26:28,588 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 52.0) internal successors, (728), 14 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:26:28,588 INFO L185 Difference]: Start difference. First operand has 180 places, 1267 transitions, 47716 flow. Second operand 13 states and 540 transitions. [2021-03-24 15:26:28,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 1371 transitions, 52281 flow [2021-03-24 15:26:32,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 1371 transitions, 51015 flow, removed 63 selfloop flow, removed 5 redundant places. [2021-03-24 15:26:32,118 INFO L241 Difference]: Finished difference. Result has 189 places, 1163 transitions, 43743 flow [2021-03-24 15:26:32,119 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=46500, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1047, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=43743, PETRI_PLACES=189, PETRI_TRANSITIONS=1163} [2021-03-24 15:26:32,119 INFO L343 CegarLoopForPetriNet]: 49 programPoint places, 140 predicate places. [2021-03-24 15:26:32,119 INFO L480 AbstractCegarLoop]: Abstraction has has 189 places, 1163 transitions, 43743 flow [2021-03-24 15:26:32,119 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 31.6) internal successors, (316), 10 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) [2021-03-24 15:26:32,119 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:26:32,119 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:26:32,119 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-03-24 15:26:32,120 INFO L428 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 15:26:32,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:26:32,120 INFO L82 PathProgramCache]: Analyzing trace with hash 953458995, now seen corresponding path program 26 times [2021-03-24 15:26:32,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:26:32,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669498182] [2021-03-24 15:26:32,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:26:32,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:26:32,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:26:32,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:26:32,135 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:26:32,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:26:32,138 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:26:32,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:26:32,141 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:26:32,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:26:32,142 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:26:32,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:26:32,142 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:26:32,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:26:32,143 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:26:32,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 15:26:32,146 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:26:32,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:26:32,147 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:26:32,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:26:32,150 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:26:32,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:26:32,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:26:32,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669498182] [2021-03-24 15:26:32,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:26:32,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 15:26:32,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580589940] [2021-03-24 15:26:32,152 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 15:26:32,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:26:32,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 15:26:32,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-24 15:26:32,152 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 52 [2021-03-24 15:26:32,153 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 1163 transitions, 43743 flow. Second operand has 7 states, 7 states have (on average 32.285714285714285) internal successors, (226), 7 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:26:32,153 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:26:32,153 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 52 [2021-03-24 15:26:32,153 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:26:37,150 INFO L129 PetriNetUnfolder]: 8282/17960 cut-off events. [2021-03-24 15:26:37,151 INFO L130 PetriNetUnfolder]: For 650397/655963 co-relation queries the response was YES. [2021-03-24 15:26:37,262 INFO L84 FinitePrefix]: Finished finitePrefix Result has 159001 conditions, 17960 events. 8282/17960 cut-off events. For 650397/655963 co-relation queries the response was YES. Maximal size of possible extension queue 1315. Compared 190585 event pairs, 1122 based on Foata normal form. 1316/18486 useless extension candidates. Maximal degree in co-relation 158395. Up to 4657 conditions per place. [2021-03-24 15:26:37,333 INFO L132 encePairwiseOnDemand]: 40/52 looper letters, 127 selfloop transitions, 1041 changer transitions 13/1202 dead transitions. [2021-03-24 15:26:37,333 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 1202 transitions, 46658 flow [2021-03-24 15:26:37,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 15:26:37,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 15:26:37,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 288 transitions. [2021-03-24 15:26:37,334 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7912087912087912 [2021-03-24 15:26:37,334 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 288 transitions. [2021-03-24 15:26:37,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 288 transitions. [2021-03-24 15:26:37,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:26:37,334 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 288 transitions. [2021-03-24 15:26:37,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 41.142857142857146) internal successors, (288), 7 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:26:37,335 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 52.0) internal successors, (416), 8 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:26:37,335 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 52.0) internal successors, (416), 8 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:26:37,336 INFO L185 Difference]: Start difference. First operand has 189 places, 1163 transitions, 43743 flow. Second operand 7 states and 288 transitions. [2021-03-24 15:26:37,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 1202 transitions, 46658 flow [2021-03-24 15:26:40,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 1202 transitions, 43842 flow, removed 2 selfloop flow, removed 10 redundant places. [2021-03-24 15:26:40,091 INFO L241 Difference]: Finished difference. Result has 187 places, 1158 transitions, 43264 flow [2021-03-24 15:26:40,091 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=40937, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1033, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=43264, PETRI_PLACES=187, PETRI_TRANSITIONS=1158} [2021-03-24 15:26:40,092 INFO L343 CegarLoopForPetriNet]: 49 programPoint places, 138 predicate places. [2021-03-24 15:26:40,092 INFO L480 AbstractCegarLoop]: Abstraction has has 187 places, 1158 transitions, 43264 flow [2021-03-24 15:26:40,092 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 32.285714285714285) internal successors, (226), 7 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:26:40,092 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:26:40,092 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:26:40,092 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-03-24 15:26:40,092 INFO L428 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 15:26:40,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:26:40,092 INFO L82 PathProgramCache]: Analyzing trace with hash -1879045417, now seen corresponding path program 27 times [2021-03-24 15:26:40,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:26:40,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265656773] [2021-03-24 15:26:40,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:26:40,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:26:40,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:26:40,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:26:40,105 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:26:40,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:26:40,108 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:26:40,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:26:40,112 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:26:40,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:26:40,117 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:26:40,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:26:40,123 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:26:40,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:26:40,124 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:26:40,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:26:40,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:26:40,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:26:40,136 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:26:40,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:26:40,143 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:26:40,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:26:40,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:26:40,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265656773] [2021-03-24 15:26:40,144 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:26:40,144 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-24 15:26:40,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674389673] [2021-03-24 15:26:40,144 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 15:26:40,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:26:40,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 15:26:40,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-03-24 15:26:40,145 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 52 [2021-03-24 15:26:40,145 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 1158 transitions, 43264 flow. Second operand has 10 states, 10 states have (on average 31.6) internal successors, (316), 10 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) [2021-03-24 15:26:40,146 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:26:40,146 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 52 [2021-03-24 15:26:40,146 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:26:45,482 INFO L129 PetriNetUnfolder]: 8219/17906 cut-off events. [2021-03-24 15:26:45,482 INFO L130 PetriNetUnfolder]: For 641764/647646 co-relation queries the response was YES. [2021-03-24 15:26:45,594 INFO L84 FinitePrefix]: Finished finitePrefix Result has 162657 conditions, 17906 events. 8219/17906 cut-off events. For 641764/647646 co-relation queries the response was YES. Maximal size of possible extension queue 1287. Compared 190067 event pairs, 1588 based on Foata normal form. 1295/18452 useless extension candidates. Maximal degree in co-relation 162056. Up to 4565 conditions per place. [2021-03-24 15:26:45,667 INFO L132 encePairwiseOnDemand]: 40/52 looper letters, 113 selfloop transitions, 1096 changer transitions 26/1256 dead transitions. [2021-03-24 15:26:45,667 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 1256 transitions, 47357 flow [2021-03-24 15:26:45,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-24 15:26:45,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-24 15:26:45,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 543 transitions. [2021-03-24 15:26:45,668 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8032544378698225 [2021-03-24 15:26:45,668 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 543 transitions. [2021-03-24 15:26:45,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 543 transitions. [2021-03-24 15:26:45,668 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:26:45,668 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 543 transitions. [2021-03-24 15:26:45,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 41.76923076923077) internal successors, (543), 13 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:26:45,669 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 52.0) internal successors, (728), 14 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:26:45,670 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 52.0) internal successors, (728), 14 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:26:45,670 INFO L185 Difference]: Start difference. First operand has 187 places, 1158 transitions, 43264 flow. Second operand 13 states and 543 transitions. [2021-03-24 15:26:45,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 1256 transitions, 47357 flow [2021-03-24 15:26:48,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 1256 transitions, 45689 flow, removed 11 selfloop flow, removed 5 redundant places. [2021-03-24 15:26:48,728 INFO L241 Difference]: Finished difference. Result has 195 places, 1174 transitions, 43735 flow [2021-03-24 15:26:48,729 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=41638, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1057, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=43735, PETRI_PLACES=195, PETRI_TRANSITIONS=1174} [2021-03-24 15:26:48,729 INFO L343 CegarLoopForPetriNet]: 49 programPoint places, 146 predicate places. [2021-03-24 15:26:48,729 INFO L480 AbstractCegarLoop]: Abstraction has has 195 places, 1174 transitions, 43735 flow [2021-03-24 15:26:48,729 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 31.6) internal successors, (316), 10 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) [2021-03-24 15:26:48,729 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:26:48,729 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:26:48,729 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-03-24 15:26:48,730 INFO L428 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 15:26:48,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:26:48,730 INFO L82 PathProgramCache]: Analyzing trace with hash -2067996305, now seen corresponding path program 28 times [2021-03-24 15:26:48,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:26:48,730 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559892980] [2021-03-24 15:26:48,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:26:48,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:26:48,742 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:26:48,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:26:48,745 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:26:48,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:26:48,748 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:26:48,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:26:48,751 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:26:48,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:26:48,755 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:26:48,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 15:26:48,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:26:48,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:26:48,759 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:26:48,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 15:26:48,759 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:26:48,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:26:48,760 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:26:48,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:26:48,764 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:26:48,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:26:48,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:26:48,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559892980] [2021-03-24 15:26:48,765 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:26:48,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 15:26:48,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879875828] [2021-03-24 15:26:48,766 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 15:26:48,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:26:48,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 15:26:48,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-24 15:26:48,767 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 52 [2021-03-24 15:26:48,767 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 1174 transitions, 43735 flow. Second operand has 7 states, 7 states have (on average 32.285714285714285) internal successors, (226), 7 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:26:48,767 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:26:48,767 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 52 [2021-03-24 15:26:48,767 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:26:53,600 INFO L129 PetriNetUnfolder]: 7513/16773 cut-off events. [2021-03-24 15:26:53,600 INFO L130 PetriNetUnfolder]: For 660102/665672 co-relation queries the response was YES. [2021-03-24 15:26:53,695 INFO L84 FinitePrefix]: Finished finitePrefix Result has 155179 conditions, 16773 events. 7513/16773 cut-off events. For 660102/665672 co-relation queries the response was YES. Maximal size of possible extension queue 1195. Compared 179035 event pairs, 988 based on Foata normal form. 1315/17436 useless extension candidates. Maximal degree in co-relation 154564. Up to 4272 conditions per place. [2021-03-24 15:26:53,760 INFO L132 encePairwiseOnDemand]: 40/52 looper letters, 158 selfloop transitions, 1061 changer transitions 4/1244 dead transitions. [2021-03-24 15:26:53,760 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 1244 transitions, 47728 flow [2021-03-24 15:26:53,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 15:26:53,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 15:26:53,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 288 transitions. [2021-03-24 15:26:53,761 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7912087912087912 [2021-03-24 15:26:53,761 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 288 transitions. [2021-03-24 15:26:53,761 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 288 transitions. [2021-03-24 15:26:53,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:26:53,761 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 288 transitions. [2021-03-24 15:26:53,762 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 41.142857142857146) internal successors, (288), 7 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:26:53,762 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 52.0) internal successors, (416), 8 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:26:53,762 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 52.0) internal successors, (416), 8 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:26:53,762 INFO L185 Difference]: Start difference. First operand has 195 places, 1174 transitions, 43735 flow. Second operand 7 states and 288 transitions. [2021-03-24 15:26:53,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 1244 transitions, 47728 flow [2021-03-24 15:26:56,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 1244 transitions, 47152 flow, removed 5 selfloop flow, removed 5 redundant places. [2021-03-24 15:26:56,749 INFO L241 Difference]: Finished difference. Result has 198 places, 1197 transitions, 46700 flow [2021-03-24 15:26:56,750 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=43195, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1035, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=46700, PETRI_PLACES=198, PETRI_TRANSITIONS=1197} [2021-03-24 15:26:56,750 INFO L343 CegarLoopForPetriNet]: 49 programPoint places, 149 predicate places. [2021-03-24 15:26:56,750 INFO L480 AbstractCegarLoop]: Abstraction has has 198 places, 1197 transitions, 46700 flow [2021-03-24 15:26:56,750 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 32.285714285714285) internal successors, (226), 7 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:26:56,750 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:26:56,750 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:26:56,750 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-03-24 15:26:56,750 INFO L428 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 15:26:56,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:26:56,750 INFO L82 PathProgramCache]: Analyzing trace with hash 1297576535, now seen corresponding path program 29 times [2021-03-24 15:26:56,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:26:56,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830210231] [2021-03-24 15:26:56,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:26:56,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:26:56,760 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:26:56,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:26:56,768 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:26:56,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:26:56,771 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:26:56,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:26:56,777 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:26:56,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:26:56,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:26:56,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:26:56,787 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:26:56,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:26:56,792 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:26:56,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:26:56,797 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:26:56,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:26:56,804 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:26:56,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:26:56,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:26:56,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:26:56,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:26:56,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830210231] [2021-03-24 15:26:56,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:26:56,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-24 15:26:56,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074711462] [2021-03-24 15:26:56,812 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-24 15:26:56,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:26:56,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-24 15:26:56,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-03-24 15:26:56,813 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 52 [2021-03-24 15:26:56,813 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 1197 transitions, 46700 flow. Second operand has 11 states, 11 states have (on average 31.454545454545453) internal successors, (346), 11 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) [2021-03-24 15:26:56,813 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:26:56,813 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 52 [2021-03-24 15:26:56,813 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:27:02,311 INFO L129 PetriNetUnfolder]: 7615/17125 cut-off events. [2021-03-24 15:27:02,311 INFO L130 PetriNetUnfolder]: For 724747/729959 co-relation queries the response was YES. [2021-03-24 15:27:02,419 INFO L84 FinitePrefix]: Finished finitePrefix Result has 165711 conditions, 17125 events. 7615/17125 cut-off events. For 724747/729959 co-relation queries the response was YES. Maximal size of possible extension queue 1247. Compared 184665 event pairs, 1300 based on Foata normal form. 1187/17668 useless extension candidates. Maximal degree in co-relation 165129. Up to 4012 conditions per place. [2021-03-24 15:27:02,485 INFO L132 encePairwiseOnDemand]: 40/52 looper letters, 119 selfloop transitions, 1059 changer transitions 103/1302 dead transitions. [2021-03-24 15:27:02,486 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 1302 transitions, 51244 flow [2021-03-24 15:27:02,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-03-24 15:27:02,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-03-24 15:27:02,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 688 transitions. [2021-03-24 15:27:02,487 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7782805429864253 [2021-03-24 15:27:02,487 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 688 transitions. [2021-03-24 15:27:02,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 688 transitions. [2021-03-24 15:27:02,488 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:27:02,488 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 688 transitions. [2021-03-24 15:27:02,489 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 40.470588235294116) internal successors, (688), 17 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:27:02,490 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 52.0) internal successors, (936), 18 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) [2021-03-24 15:27:02,490 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 52.0) internal successors, (936), 18 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) [2021-03-24 15:27:02,490 INFO L185 Difference]: Start difference. First operand has 198 places, 1197 transitions, 46700 flow. Second operand 17 states and 688 transitions. [2021-03-24 15:27:02,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 1302 transitions, 51244 flow [2021-03-24 15:27:05,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 1302 transitions, 49514 flow, removed 30 selfloop flow, removed 6 redundant places. [2021-03-24 15:27:05,665 INFO L241 Difference]: Finished difference. Result has 209 places, 1150 transitions, 45289 flow [2021-03-24 15:27:05,666 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=45096, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1059, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=45289, PETRI_PLACES=209, PETRI_TRANSITIONS=1150} [2021-03-24 15:27:05,666 INFO L343 CegarLoopForPetriNet]: 49 programPoint places, 160 predicate places. [2021-03-24 15:27:05,666 INFO L480 AbstractCegarLoop]: Abstraction has has 209 places, 1150 transitions, 45289 flow [2021-03-24 15:27:05,666 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 31.454545454545453) internal successors, (346), 11 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) [2021-03-24 15:27:05,666 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:27:05,667 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:27:05,667 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-03-24 15:27:05,667 INFO L428 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 15:27:05,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:27:05,667 INFO L82 PathProgramCache]: Analyzing trace with hash -686648187, now seen corresponding path program 30 times [2021-03-24 15:27:05,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:27:05,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120900607] [2021-03-24 15:27:05,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:27:05,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:27:05,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:27:05,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:27:05,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:27:05,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:27:05,689 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:27:05,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:27:05,693 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:27:05,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:27:05,693 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:27:05,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 15:27:05,697 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:27:05,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:27:05,698 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:27:05,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:27:05,698 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:27:05,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:27:05,702 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:27:05,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:27:05,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:27:05,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:27:05,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:27:05,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120900607] [2021-03-24 15:27:05,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:27:05,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 15:27:05,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400954593] [2021-03-24 15:27:05,709 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 15:27:05,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:27:05,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 15:27:05,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-03-24 15:27:05,709 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 52 [2021-03-24 15:27:05,710 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 1150 transitions, 45289 flow. Second operand has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:27:05,710 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:27:05,710 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 52 [2021-03-24 15:27:05,710 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:27:10,516 INFO L129 PetriNetUnfolder]: 7770/17387 cut-off events. [2021-03-24 15:27:10,517 INFO L130 PetriNetUnfolder]: For 756563/762429 co-relation queries the response was YES. [2021-03-24 15:27:10,849 INFO L84 FinitePrefix]: Finished finitePrefix Result has 165650 conditions, 17387 events. 7770/17387 cut-off events. For 756563/762429 co-relation queries the response was YES. Maximal size of possible extension queue 1286. Compared 188239 event pairs, 1047 based on Foata normal form. 1272/17970 useless extension candidates. Maximal degree in co-relation 165053. Up to 3971 conditions per place. [2021-03-24 15:27:10,914 INFO L132 encePairwiseOnDemand]: 40/52 looper letters, 155 selfloop transitions, 1049 changer transitions 2/1227 dead transitions. [2021-03-24 15:27:10,915 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 1227 transitions, 48836 flow [2021-03-24 15:27:10,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 15:27:10,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 15:27:10,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 373 transitions. [2021-03-24 15:27:10,915 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7970085470085471 [2021-03-24 15:27:10,916 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 373 transitions. [2021-03-24 15:27:10,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 373 transitions. [2021-03-24 15:27:10,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:27:10,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 373 transitions. [2021-03-24 15:27:10,916 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 41.44444444444444) internal successors, (373), 9 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:27:10,917 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 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) [2021-03-24 15:27:10,917 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 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) [2021-03-24 15:27:10,917 INFO L185 Difference]: Start difference. First operand has 209 places, 1150 transitions, 45289 flow. Second operand 9 states and 373 transitions. [2021-03-24 15:27:10,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 1227 transitions, 48836 flow [2021-03-24 15:27:13,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 1227 transitions, 46641 flow, removed 110 selfloop flow, removed 13 redundant places. [2021-03-24 15:27:13,740 INFO L241 Difference]: Finished difference. Result has 201 places, 1180 transitions, 46089 flow [2021-03-24 15:27:13,741 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=43124, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1019, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=46089, PETRI_PLACES=201, PETRI_TRANSITIONS=1180} [2021-03-24 15:27:13,741 INFO L343 CegarLoopForPetriNet]: 49 programPoint places, 152 predicate places. [2021-03-24 15:27:13,741 INFO L480 AbstractCegarLoop]: Abstraction has has 201 places, 1180 transitions, 46089 flow [2021-03-24 15:27:13,741 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:27:13,741 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:27:13,742 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:27:13,742 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-03-24 15:27:13,742 INFO L428 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 15:27:13,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:27:13,742 INFO L82 PathProgramCache]: Analyzing trace with hash 1715606925, now seen corresponding path program 31 times [2021-03-24 15:27:13,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:27:13,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144982769] [2021-03-24 15:27:13,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:27:13,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:27:13,752 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:27:13,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:27:13,754 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:27:13,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:27:13,757 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:27:13,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:27:13,763 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:27:13,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:27:13,767 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:27:13,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:27:13,768 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:27:13,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:27:13,768 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:27:13,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 15:27:13,772 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:27:13,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:27:13,772 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:27:13,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:27:13,777 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:27:13,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:27:13,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:27:13,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144982769] [2021-03-24 15:27:13,778 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:27:13,778 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 15:27:13,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597607078] [2021-03-24 15:27:13,778 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 15:27:13,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:27:13,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 15:27:13,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-03-24 15:27:13,779 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 52 [2021-03-24 15:27:13,779 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 1180 transitions, 46089 flow. Second operand has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:27:13,779 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:27:13,779 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 52 [2021-03-24 15:27:13,779 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:27:18,825 INFO L129 PetriNetUnfolder]: 7753/17180 cut-off events. [2021-03-24 15:27:18,825 INFO L130 PetriNetUnfolder]: For 748533/754189 co-relation queries the response was YES. [2021-03-24 15:27:18,939 INFO L84 FinitePrefix]: Finished finitePrefix Result has 169330 conditions, 17180 events. 7753/17180 cut-off events. For 748533/754189 co-relation queries the response was YES. Maximal size of possible extension queue 1259. Compared 183627 event pairs, 760 based on Foata normal form. 1232/17726 useless extension candidates. Maximal degree in co-relation 168700. Up to 4582 conditions per place. [2021-03-24 15:27:19,010 INFO L132 encePairwiseOnDemand]: 40/52 looper letters, 102 selfloop transitions, 1170 changer transitions 3/1296 dead transitions. [2021-03-24 15:27:19,010 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 1296 transitions, 50311 flow [2021-03-24 15:27:19,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 15:27:19,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 15:27:19,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 374 transitions. [2021-03-24 15:27:19,011 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7991452991452992 [2021-03-24 15:27:19,011 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 374 transitions. [2021-03-24 15:27:19,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 374 transitions. [2021-03-24 15:27:19,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:27:19,012 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 374 transitions. [2021-03-24 15:27:19,012 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 41.55555555555556) internal successors, (374), 9 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:27:19,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 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) [2021-03-24 15:27:19,013 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 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) [2021-03-24 15:27:19,013 INFO L185 Difference]: Start difference. First operand has 201 places, 1180 transitions, 46089 flow. Second operand 9 states and 374 transitions. [2021-03-24 15:27:19,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 1296 transitions, 50311 flow [2021-03-24 15:27:22,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 1296 transitions, 48990 flow, removed 15 selfloop flow, removed 4 redundant places. [2021-03-24 15:27:22,138 INFO L241 Difference]: Finished difference. Result has 207 places, 1255 transitions, 49258 flow [2021-03-24 15:27:22,138 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=44816, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=49258, PETRI_PLACES=207, PETRI_TRANSITIONS=1255} [2021-03-24 15:27:22,139 INFO L343 CegarLoopForPetriNet]: 49 programPoint places, 158 predicate places. [2021-03-24 15:27:22,139 INFO L480 AbstractCegarLoop]: Abstraction has has 207 places, 1255 transitions, 49258 flow [2021-03-24 15:27:22,139 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:27:22,139 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:27:22,139 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:27:22,139 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-03-24 15:27:22,139 INFO L428 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 15:27:22,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:27:22,139 INFO L82 PathProgramCache]: Analyzing trace with hash 96477891, now seen corresponding path program 32 times [2021-03-24 15:27:22,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:27:22,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770998795] [2021-03-24 15:27:22,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:27:22,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:27:22,150 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:27:22,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:27:22,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:27:22,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:27:22,155 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:27:22,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:27:22,169 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:27:22,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:27:22,170 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:27:22,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 15:27:22,173 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:27:22,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:27:22,174 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:27:22,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:27:22,175 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:27:22,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:27:22,179 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:27:22,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:27:22,183 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:27:22,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:27:22,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:27:22,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770998795] [2021-03-24 15:27:22,184 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:27:22,184 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 15:27:22,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224026711] [2021-03-24 15:27:22,184 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 15:27:22,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:27:22,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 15:27:22,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-03-24 15:27:22,185 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 52 [2021-03-24 15:27:22,185 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 1255 transitions, 49258 flow. Second operand has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:27:22,185 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:27:22,185 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 52 [2021-03-24 15:27:22,185 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:27:27,710 INFO L129 PetriNetUnfolder]: 7900/17942 cut-off events. [2021-03-24 15:27:27,710 INFO L130 PetriNetUnfolder]: For 845911/851856 co-relation queries the response was YES. [2021-03-24 15:27:27,844 INFO L84 FinitePrefix]: Finished finitePrefix Result has 180883 conditions, 17942 events. 7900/17942 cut-off events. For 845911/851856 co-relation queries the response was YES. Maximal size of possible extension queue 1321. Compared 196419 event pairs, 1020 based on Foata normal form. 1366/18631 useless extension candidates. Maximal degree in co-relation 180140. Up to 4128 conditions per place. [2021-03-24 15:27:27,918 INFO L132 encePairwiseOnDemand]: 40/52 looper letters, 186 selfloop transitions, 1124 changer transitions 0/1331 dead transitions. [2021-03-24 15:27:27,919 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 1331 transitions, 53142 flow [2021-03-24 15:27:27,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 15:27:27,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 15:27:27,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 373 transitions. [2021-03-24 15:27:27,920 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7970085470085471 [2021-03-24 15:27:27,920 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 373 transitions. [2021-03-24 15:27:27,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 373 transitions. [2021-03-24 15:27:27,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:27:27,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 373 transitions. [2021-03-24 15:27:27,921 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 41.44444444444444) internal successors, (373), 9 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:27:27,921 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 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) [2021-03-24 15:27:27,921 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 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) [2021-03-24 15:27:27,921 INFO L185 Difference]: Start difference. First operand has 207 places, 1255 transitions, 49258 flow. Second operand 9 states and 373 transitions. [2021-03-24 15:27:27,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 1331 transitions, 53142 flow [2021-03-24 15:27:30,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 1331 transitions, 51782 flow, removed 155 selfloop flow, removed 3 redundant places. [2021-03-24 15:27:30,955 INFO L241 Difference]: Finished difference. Result has 214 places, 1287 transitions, 51140 flow [2021-03-24 15:27:30,956 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=47952, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1092, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=51140, PETRI_PLACES=214, PETRI_TRANSITIONS=1287} [2021-03-24 15:27:30,956 INFO L343 CegarLoopForPetriNet]: 49 programPoint places, 165 predicate places. [2021-03-24 15:27:30,956 INFO L480 AbstractCegarLoop]: Abstraction has has 214 places, 1287 transitions, 51140 flow [2021-03-24 15:27:30,956 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:27:30,956 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:27:30,956 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:27:30,956 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-03-24 15:27:30,956 INFO L428 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 15:27:30,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:27:30,956 INFO L82 PathProgramCache]: Analyzing trace with hash 1262225401, now seen corresponding path program 33 times [2021-03-24 15:27:30,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:27:30,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962882254] [2021-03-24 15:27:30,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:27:30,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:27:30,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:27:30,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:27:30,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:27:30,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:27:30,975 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:27:30,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:27:30,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:27:30,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:27:30,983 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:27:30,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:27:30,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:27:30,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:27:30,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:27:30,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 15:27:30,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:27:30,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:27:30,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:27:30,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:27:30,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:27:30,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:27:30,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:27:30,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962882254] [2021-03-24 15:27:30,993 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:27:30,994 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 15:27:30,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291476255] [2021-03-24 15:27:30,994 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 15:27:30,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:27:30,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 15:27:30,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-03-24 15:27:30,995 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 52 [2021-03-24 15:27:30,995 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 1287 transitions, 51140 flow. Second operand has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:27:30,995 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:27:30,995 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 52 [2021-03-24 15:27:30,995 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:27:36,965 INFO L129 PetriNetUnfolder]: 7972/17748 cut-off events. [2021-03-24 15:27:36,965 INFO L130 PetriNetUnfolder]: For 887068/893428 co-relation queries the response was YES. [2021-03-24 15:27:37,095 INFO L84 FinitePrefix]: Finished finitePrefix Result has 183020 conditions, 17748 events. 7972/17748 cut-off events. For 887068/893428 co-relation queries the response was YES. Maximal size of possible extension queue 1343. Compared 191697 event pairs, 766 based on Foata normal form. 1377/18393 useless extension candidates. Maximal degree in co-relation 182382. Up to 4710 conditions per place. [2021-03-24 15:27:37,173 INFO L132 encePairwiseOnDemand]: 40/52 looper letters, 105 selfloop transitions, 1193 changer transitions 20/1339 dead transitions. [2021-03-24 15:27:37,174 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 1339 transitions, 54566 flow [2021-03-24 15:27:37,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 15:27:37,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 15:27:37,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 374 transitions. [2021-03-24 15:27:37,174 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7991452991452992 [2021-03-24 15:27:37,175 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 374 transitions. [2021-03-24 15:27:37,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 374 transitions. [2021-03-24 15:27:37,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:27:37,175 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 374 transitions. [2021-03-24 15:27:37,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 41.55555555555556) internal successors, (374), 9 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:27:37,176 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 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) [2021-03-24 15:27:37,176 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 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) [2021-03-24 15:27:37,176 INFO L185 Difference]: Start difference. First operand has 214 places, 1287 transitions, 51140 flow. Second operand 9 states and 374 transitions. [2021-03-24 15:27:37,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 1339 transitions, 54566 flow [2021-03-24 15:27:40,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 1339 transitions, 53269 flow, removed 16 selfloop flow, removed 6 redundant places. [2021-03-24 15:27:40,578 INFO L241 Difference]: Finished difference. Result has 217 places, 1280 transitions, 51847 flow [2021-03-24 15:27:40,579 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=49874, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1189, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=51847, PETRI_PLACES=217, PETRI_TRANSITIONS=1280} [2021-03-24 15:27:40,579 INFO L343 CegarLoopForPetriNet]: 49 programPoint places, 168 predicate places. [2021-03-24 15:27:40,579 INFO L480 AbstractCegarLoop]: Abstraction has has 217 places, 1280 transitions, 51847 flow [2021-03-24 15:27:40,580 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:27:40,580 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:27:40,580 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:27:40,580 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-03-24 15:27:40,580 INFO L428 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 15:27:40,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:27:40,580 INFO L82 PathProgramCache]: Analyzing trace with hash 33594539, now seen corresponding path program 34 times [2021-03-24 15:27:40,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:27:40,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551016329] [2021-03-24 15:27:40,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:27:40,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:27:40,594 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:27:40,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:27:40,596 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:27:40,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:27:40,600 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:27:40,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:27:40,603 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:27:40,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:27:40,604 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:27:40,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 15:27:40,608 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:27:40,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:27:40,608 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:27:40,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:27:40,609 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:27:40,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:27:40,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:27:40,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:27:40,623 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:27:40,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:27:40,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:27:40,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551016329] [2021-03-24 15:27:40,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:27:40,624 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 15:27:40,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731329500] [2021-03-24 15:27:40,624 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 15:27:40,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:27:40,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 15:27:40,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-03-24 15:27:40,624 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 52 [2021-03-24 15:27:40,625 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 1280 transitions, 51847 flow. Second operand has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:27:40,625 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:27:40,625 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 52 [2021-03-24 15:27:40,625 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:27:46,321 INFO L129 PetriNetUnfolder]: 7883/17938 cut-off events. [2021-03-24 15:27:46,321 INFO L130 PetriNetUnfolder]: For 935856/941951 co-relation queries the response was YES. [2021-03-24 15:27:46,434 INFO L84 FinitePrefix]: Finished finitePrefix Result has 185245 conditions, 17938 events. 7883/17938 cut-off events. For 935856/941951 co-relation queries the response was YES. Maximal size of possible extension queue 1341. Compared 196817 event pairs, 1029 based on Foata normal form. 1280/18536 useless extension candidates. Maximal degree in co-relation 184488. Up to 4181 conditions per place. [2021-03-24 15:27:46,508 INFO L132 encePairwiseOnDemand]: 40/52 looper letters, 204 selfloop transitions, 1148 changer transitions 5/1378 dead transitions. [2021-03-24 15:27:46,508 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 1378 transitions, 56358 flow [2021-03-24 15:27:46,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 15:27:46,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 15:27:46,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 373 transitions. [2021-03-24 15:27:46,509 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7970085470085471 [2021-03-24 15:27:46,509 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 373 transitions. [2021-03-24 15:27:46,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 373 transitions. [2021-03-24 15:27:46,509 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:27:46,510 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 373 transitions. [2021-03-24 15:27:46,510 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 41.44444444444444) internal successors, (373), 9 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:27:46,510 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 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) [2021-03-24 15:27:46,511 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 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) [2021-03-24 15:27:46,511 INFO L185 Difference]: Start difference. First operand has 217 places, 1280 transitions, 51847 flow. Second operand 9 states and 373 transitions. [2021-03-24 15:27:46,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 1378 transitions, 56358 flow [2021-03-24 15:27:49,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 1378 transitions, 55259 flow, removed 9 selfloop flow, removed 5 redundant places. [2021-03-24 15:27:49,538 INFO L241 Difference]: Finished difference. Result has 222 places, 1309 transitions, 53961 flow [2021-03-24 15:27:49,539 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=50781, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=53961, PETRI_PLACES=222, PETRI_TRANSITIONS=1309} [2021-03-24 15:27:49,539 INFO L343 CegarLoopForPetriNet]: 49 programPoint places, 173 predicate places. [2021-03-24 15:27:49,539 INFO L480 AbstractCegarLoop]: Abstraction has has 222 places, 1309 transitions, 53961 flow [2021-03-24 15:27:49,539 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:27:49,539 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:27:49,540 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:27:49,540 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-03-24 15:27:49,540 INFO L428 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 15:27:49,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:27:49,540 INFO L82 PathProgramCache]: Analyzing trace with hash -430958013, now seen corresponding path program 35 times [2021-03-24 15:27:49,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:27:49,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237068299] [2021-03-24 15:27:49,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:27:49,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:27:49,549 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:27:49,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:27:49,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:27:49,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:27:49,555 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:27:49,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:27:49,559 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:27:49,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:27:49,563 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:27:49,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:27:49,567 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:27:49,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:27:49,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:27:49,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:27:49,572 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:27:49,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:27:49,577 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:27:49,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:27:49,586 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:27:49,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:27:49,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:27:49,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237068299] [2021-03-24 15:27:49,587 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:27:49,587 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-24 15:27:49,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278970734] [2021-03-24 15:27:49,587 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 15:27:49,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:27:49,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 15:27:49,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-03-24 15:27:49,588 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 52 [2021-03-24 15:27:49,588 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 1309 transitions, 53961 flow. Second operand has 10 states, 10 states have (on average 31.6) internal successors, (316), 10 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) [2021-03-24 15:27:49,588 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:27:49,588 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 52 [2021-03-24 15:27:49,588 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:27:55,406 INFO L129 PetriNetUnfolder]: 7815/17725 cut-off events. [2021-03-24 15:27:55,407 INFO L130 PetriNetUnfolder]: For 967100/973091 co-relation queries the response was YES. [2021-03-24 15:27:55,534 INFO L84 FinitePrefix]: Finished finitePrefix Result has 188668 conditions, 17725 events. 7815/17725 cut-off events. For 967100/973091 co-relation queries the response was YES. Maximal size of possible extension queue 1349. Compared 193594 event pairs, 1530 based on Foata normal form. 1195/18262 useless extension candidates. Maximal degree in co-relation 187947. Up to 4878 conditions per place. [2021-03-24 15:27:55,613 INFO L132 encePairwiseOnDemand]: 40/52 looper letters, 292 selfloop transitions, 1042 changer transitions 24/1379 dead transitions. [2021-03-24 15:27:55,613 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 1379 transitions, 57804 flow [2021-03-24 15:27:55,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-24 15:27:55,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-24 15:27:55,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 539 transitions. [2021-03-24 15:27:55,614 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7973372781065089 [2021-03-24 15:27:55,614 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 539 transitions. [2021-03-24 15:27:55,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 539 transitions. [2021-03-24 15:27:55,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:27:55,615 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 539 transitions. [2021-03-24 15:27:55,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 41.46153846153846) internal successors, (539), 13 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:27:55,616 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 52.0) internal successors, (728), 14 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:27:55,616 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 52.0) internal successors, (728), 14 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:27:55,616 INFO L185 Difference]: Start difference. First operand has 222 places, 1309 transitions, 53961 flow. Second operand 13 states and 539 transitions. [2021-03-24 15:27:55,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 1379 transitions, 57804 flow [2021-03-24 15:27:58,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 1379 transitions, 57046 flow, removed 12 selfloop flow, removed 5 redundant places. [2021-03-24 15:27:59,012 INFO L241 Difference]: Finished difference. Result has 230 places, 1302 transitions, 54509 flow [2021-03-24 15:27:59,013 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=53227, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1025, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=54509, PETRI_PLACES=230, PETRI_TRANSITIONS=1302} [2021-03-24 15:27:59,014 INFO L343 CegarLoopForPetriNet]: 49 programPoint places, 181 predicate places. [2021-03-24 15:27:59,014 INFO L480 AbstractCegarLoop]: Abstraction has has 230 places, 1302 transitions, 54509 flow [2021-03-24 15:27:59,014 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 31.6) internal successors, (316), 10 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) [2021-03-24 15:27:59,014 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:27:59,014 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:27:59,014 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-03-24 15:27:59,014 INFO L428 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 15:27:59,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:27:59,014 INFO L82 PathProgramCache]: Analyzing trace with hash 153658293, now seen corresponding path program 36 times [2021-03-24 15:27:59,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:27:59,015 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309713048] [2021-03-24 15:27:59,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:27:59,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:27:59,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:27:59,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:27:59,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:27:59,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:27:59,029 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:27:59,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:27:59,033 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:27:59,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:27:59,038 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:27:59,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:27:59,043 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:27:59,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:27:59,048 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:27:59,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:27:59,053 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:27:59,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:27:59,060 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:27:59,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:27:59,066 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:27:59,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:27:59,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:27:59,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309713048] [2021-03-24 15:27:59,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:27:59,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-24 15:27:59,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532339447] [2021-03-24 15:27:59,068 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-24 15:27:59,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:27:59,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-24 15:27:59,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-03-24 15:27:59,069 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 52 [2021-03-24 15:27:59,069 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 1302 transitions, 54509 flow. Second operand has 11 states, 11 states have (on average 31.454545454545453) internal successors, (346), 11 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) [2021-03-24 15:27:59,069 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:27:59,069 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 52 [2021-03-24 15:27:59,069 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:28:05,000 INFO L129 PetriNetUnfolder]: 7773/17712 cut-off events. [2021-03-24 15:28:05,001 INFO L130 PetriNetUnfolder]: For 1000374/1006354 co-relation queries the response was YES. [2021-03-24 15:28:05,136 INFO L84 FinitePrefix]: Finished finitePrefix Result has 189132 conditions, 17712 events. 7773/17712 cut-off events. For 1000374/1006354 co-relation queries the response was YES. Maximal size of possible extension queue 1347. Compared 194261 event pairs, 1500 based on Foata normal form. 1146/18185 useless extension candidates. Maximal degree in co-relation 188389. Up to 4878 conditions per place. [2021-03-24 15:28:05,426 INFO L132 encePairwiseOnDemand]: 40/52 looper letters, 305 selfloop transitions, 1036 changer transitions 17/1379 dead transitions. [2021-03-24 15:28:05,427 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 1379 transitions, 58382 flow [2021-03-24 15:28:05,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-03-24 15:28:05,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-03-24 15:28:05,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 688 transitions. [2021-03-24 15:28:05,428 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7782805429864253 [2021-03-24 15:28:05,428 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 688 transitions. [2021-03-24 15:28:05,428 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 688 transitions. [2021-03-24 15:28:05,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:28:05,428 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 688 transitions. [2021-03-24 15:28:05,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 40.470588235294116) internal successors, (688), 17 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:28:05,430 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 52.0) internal successors, (936), 18 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) [2021-03-24 15:28:05,430 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 52.0) internal successors, (936), 18 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) [2021-03-24 15:28:05,430 INFO L185 Difference]: Start difference. First operand has 230 places, 1302 transitions, 54509 flow. Second operand 17 states and 688 transitions. [2021-03-24 15:28:05,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 1379 transitions, 58382 flow [2021-03-24 15:28:08,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 1379 transitions, 56971 flow, removed 15 selfloop flow, removed 8 redundant places. [2021-03-24 15:28:08,861 INFO L241 Difference]: Finished difference. Result has 239 places, 1296 transitions, 54647 flow [2021-03-24 15:28:08,862 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=53148, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1026, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=54647, PETRI_PLACES=239, PETRI_TRANSITIONS=1296} [2021-03-24 15:28:08,862 INFO L343 CegarLoopForPetriNet]: 49 programPoint places, 190 predicate places. [2021-03-24 15:28:08,862 INFO L480 AbstractCegarLoop]: Abstraction has has 239 places, 1296 transitions, 54647 flow [2021-03-24 15:28:08,862 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 31.454545454545453) internal successors, (346), 11 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) [2021-03-24 15:28:08,862 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:28:08,862 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:28:08,862 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-03-24 15:28:08,862 INFO L428 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 15:28:08,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:28:08,863 INFO L82 PathProgramCache]: Analyzing trace with hash 1431539097, now seen corresponding path program 37 times [2021-03-24 15:28:08,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:28:08,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117898280] [2021-03-24 15:28:08,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:28:08,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:28:08,871 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:28:08,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:28:08,874 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:28:08,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:28:08,877 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:28:08,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:28:08,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:28:08,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:28:08,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:28:08,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:28:08,889 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:28:08,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:28:08,894 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:28:08,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:28:08,898 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:28:08,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:28:08,904 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:28:08,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:28:08,910 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:28:08,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:28:08,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:28:08,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117898280] [2021-03-24 15:28:08,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:28:08,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-24 15:28:08,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774928612] [2021-03-24 15:28:08,911 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-24 15:28:08,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:28:08,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-24 15:28:08,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-03-24 15:28:08,912 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 52 [2021-03-24 15:28:08,912 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 1296 transitions, 54647 flow. Second operand has 11 states, 11 states have (on average 31.454545454545453) internal successors, (346), 11 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) [2021-03-24 15:28:08,912 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:28:08,912 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 52 [2021-03-24 15:28:08,913 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:28:14,965 INFO L129 PetriNetUnfolder]: 7798/17811 cut-off events. [2021-03-24 15:28:14,965 INFO L130 PetriNetUnfolder]: For 1028058/1033840 co-relation queries the response was YES. [2021-03-24 15:28:15,085 INFO L84 FinitePrefix]: Finished finitePrefix Result has 192215 conditions, 17811 events. 7798/17811 cut-off events. For 1028058/1033840 co-relation queries the response was YES. Maximal size of possible extension queue 1354. Compared 195669 event pairs, 1509 based on Foata normal form. 1190/18342 useless extension candidates. Maximal degree in co-relation 191471. Up to 4884 conditions per place. [2021-03-24 15:28:15,161 INFO L132 encePairwiseOnDemand]: 40/52 looper letters, 305 selfloop transitions, 1046 changer transitions 17/1389 dead transitions. [2021-03-24 15:28:15,161 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 1389 transitions, 59483 flow [2021-03-24 15:28:15,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-03-24 15:28:15,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-03-24 15:28:15,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 688 transitions. [2021-03-24 15:28:15,168 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7782805429864253 [2021-03-24 15:28:15,168 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 688 transitions. [2021-03-24 15:28:15,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 688 transitions. [2021-03-24 15:28:15,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:28:15,168 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 688 transitions. [2021-03-24 15:28:15,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 40.470588235294116) internal successors, (688), 17 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:28:15,169 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 52.0) internal successors, (936), 18 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) [2021-03-24 15:28:15,169 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 52.0) internal successors, (936), 18 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) [2021-03-24 15:28:15,169 INFO L185 Difference]: Start difference. First operand has 239 places, 1296 transitions, 54647 flow. Second operand 17 states and 688 transitions. [2021-03-24 15:28:15,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 1389 transitions, 59483 flow [2021-03-24 15:28:18,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 1389 transitions, 56314 flow, removed 0 selfloop flow, removed 15 redundant places. [2021-03-24 15:28:18,604 INFO L241 Difference]: Finished difference. Result has 241 places, 1306 transitions, 53934 flow [2021-03-24 15:28:18,604 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=51562, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1020, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=53934, PETRI_PLACES=241, PETRI_TRANSITIONS=1306} [2021-03-24 15:28:18,605 INFO L343 CegarLoopForPetriNet]: 49 programPoint places, 192 predicate places. [2021-03-24 15:28:18,605 INFO L480 AbstractCegarLoop]: Abstraction has has 241 places, 1306 transitions, 53934 flow [2021-03-24 15:28:18,605 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 31.454545454545453) internal successors, (346), 11 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) [2021-03-24 15:28:18,605 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:28:18,605 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:28:18,605 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-03-24 15:28:18,605 INFO L428 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 15:28:18,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:28:18,606 INFO L82 PathProgramCache]: Analyzing trace with hash -496344549, now seen corresponding path program 38 times [2021-03-24 15:28:18,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:28:18,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525415283] [2021-03-24 15:28:18,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:28:18,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:28:18,615 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:28:18,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:28:18,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:28:18,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:28:18,620 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:28:18,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:28:18,624 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:28:18,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:28:18,628 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:28:18,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:28:18,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:28:18,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:28:18,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:28:18,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 15:28:18,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:28:18,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:28:18,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:28:18,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:28:18,638 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:28:18,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:28:18,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:28:18,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525415283] [2021-03-24 15:28:18,639 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:28:18,639 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 15:28:18,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267086072] [2021-03-24 15:28:18,639 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 15:28:18,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:28:18,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 15:28:18,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-03-24 15:28:18,640 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 52 [2021-03-24 15:28:18,640 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 1306 transitions, 53934 flow. Second operand has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:28:18,640 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:28:18,640 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 52 [2021-03-24 15:28:18,640 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:28:24,319 INFO L129 PetriNetUnfolder]: 7789/17606 cut-off events. [2021-03-24 15:28:24,319 INFO L130 PetriNetUnfolder]: For 987741/993819 co-relation queries the response was YES. [2021-03-24 15:28:24,444 INFO L84 FinitePrefix]: Finished finitePrefix Result has 188968 conditions, 17606 events. 7789/17606 cut-off events. For 987741/993819 co-relation queries the response was YES. Maximal size of possible extension queue 1327. Compared 191749 event pairs, 767 based on Foata normal form. 1311/18209 useless extension candidates. Maximal degree in co-relation 188218. Up to 4651 conditions per place. [2021-03-24 15:28:24,518 INFO L132 encePairwiseOnDemand]: 40/52 looper letters, 112 selfloop transitions, 1218 changer transitions 13/1364 dead transitions. [2021-03-24 15:28:24,518 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 1364 transitions, 57657 flow [2021-03-24 15:28:24,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 15:28:24,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 15:28:24,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 374 transitions. [2021-03-24 15:28:24,519 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7991452991452992 [2021-03-24 15:28:24,519 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 374 transitions. [2021-03-24 15:28:24,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 374 transitions. [2021-03-24 15:28:24,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:28:24,519 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 374 transitions. [2021-03-24 15:28:24,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 41.55555555555556) internal successors, (374), 9 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:28:24,520 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 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) [2021-03-24 15:28:24,520 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 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) [2021-03-24 15:28:24,520 INFO L185 Difference]: Start difference. First operand has 241 places, 1306 transitions, 53934 flow. Second operand 9 states and 374 transitions. [2021-03-24 15:28:24,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 1364 transitions, 57657 flow [2021-03-24 15:28:27,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 1364 transitions, 56191 flow, removed 0 selfloop flow, removed 10 redundant places. [2021-03-24 15:28:27,959 INFO L241 Difference]: Finished difference. Result has 240 places, 1309 transitions, 54688 flow [2021-03-24 15:28:27,960 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=52479, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1204, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=54688, PETRI_PLACES=240, PETRI_TRANSITIONS=1309} [2021-03-24 15:28:27,961 INFO L343 CegarLoopForPetriNet]: 49 programPoint places, 191 predicate places. [2021-03-24 15:28:27,961 INFO L480 AbstractCegarLoop]: Abstraction has has 240 places, 1309 transitions, 54688 flow [2021-03-24 15:28:27,961 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:28:27,961 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:28:27,961 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:28:27,961 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-03-24 15:28:27,961 INFO L428 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 15:28:27,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:28:27,961 INFO L82 PathProgramCache]: Analyzing trace with hash -137860159, now seen corresponding path program 39 times [2021-03-24 15:28:27,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:28:27,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630639621] [2021-03-24 15:28:27,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:28:27,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:28:27,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:28:27,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:28:27,977 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:28:27,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:28:27,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:28:27,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:28:27,983 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:28:27,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:28:27,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:28:27,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:28:27,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:28:27,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:28:27,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:28:27,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:28:27,992 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:28:27,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:28:27,997 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:28:27,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:28:28,002 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:28:28,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:28:28,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:28:28,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630639621] [2021-03-24 15:28:28,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:28:28,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 15:28:28,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947228541] [2021-03-24 15:28:28,003 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 15:28:28,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:28:28,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 15:28:28,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-03-24 15:28:28,004 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 52 [2021-03-24 15:28:28,004 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 1309 transitions, 54688 flow. Second operand has 9 states, 9 states have (on average 31.77777777777778) internal successors, (286), 9 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:28:28,004 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:28:28,004 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 52 [2021-03-24 15:28:28,004 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:28:33,623 INFO L129 PetriNetUnfolder]: 7105/16748 cut-off events. [2021-03-24 15:28:33,623 INFO L130 PetriNetUnfolder]: For 962927/968357 co-relation queries the response was YES. [2021-03-24 15:28:33,739 INFO L84 FinitePrefix]: Finished finitePrefix Result has 185117 conditions, 16748 events. 7105/16748 cut-off events. For 962927/968357 co-relation queries the response was YES. Maximal size of possible extension queue 1360. Compared 186374 event pairs, 1476 based on Foata normal form. 1286/17462 useless extension candidates. Maximal degree in co-relation 184290. Up to 5322 conditions per place. [2021-03-24 15:28:33,810 INFO L132 encePairwiseOnDemand]: 40/52 looper letters, 375 selfloop transitions, 939 changer transitions 100/1435 dead transitions. [2021-03-24 15:28:33,810 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 1435 transitions, 61224 flow [2021-03-24 15:28:33,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-03-24 15:28:33,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-03-24 15:28:33,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 497 transitions. [2021-03-24 15:28:33,811 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7964743589743589 [2021-03-24 15:28:33,811 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 497 transitions. [2021-03-24 15:28:33,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 497 transitions. [2021-03-24 15:28:33,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:28:33,811 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 497 transitions. [2021-03-24 15:28:33,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 41.416666666666664) internal successors, (497), 12 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:28:33,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 52.0) internal successors, (676), 13 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:28:33,813 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 52.0) internal successors, (676), 13 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:28:33,813 INFO L185 Difference]: Start difference. First operand has 240 places, 1309 transitions, 54688 flow. Second operand 12 states and 497 transitions. [2021-03-24 15:28:33,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 1435 transitions, 61224 flow [2021-03-24 15:28:37,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 1435 transitions, 59993 flow, removed 17 selfloop flow, removed 5 redundant places. [2021-03-24 15:28:37,254 INFO L241 Difference]: Finished difference. Result has 249 places, 1279 transitions, 53118 flow [2021-03-24 15:28:37,255 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=53196, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=870, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=430, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=53118, PETRI_PLACES=249, PETRI_TRANSITIONS=1279} [2021-03-24 15:28:37,255 INFO L343 CegarLoopForPetriNet]: 49 programPoint places, 200 predicate places. [2021-03-24 15:28:37,255 INFO L480 AbstractCegarLoop]: Abstraction has has 249 places, 1279 transitions, 53118 flow [2021-03-24 15:28:37,255 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 31.77777777777778) internal successors, (286), 9 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:28:37,255 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:28:37,255 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:28:37,255 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-03-24 15:28:37,255 INFO L428 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 15:28:37,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:28:37,256 INFO L82 PathProgramCache]: Analyzing trace with hash -1619442583, now seen corresponding path program 40 times [2021-03-24 15:28:37,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:28:37,256 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446107962] [2021-03-24 15:28:37,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:28:37,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:28:37,265 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:28:37,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:28:37,267 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:28:37,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:28:37,270 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:28:37,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:28:37,274 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:28:37,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:28:37,278 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:28:37,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:28:37,283 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:28:37,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:28:37,284 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:28:37,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:28:37,285 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:28:37,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:28:37,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:28:37,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:28:37,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:28:37,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:28:37,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:28:37,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446107962] [2021-03-24 15:28:37,296 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:28:37,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 15:28:37,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74924408] [2021-03-24 15:28:37,296 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 15:28:37,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:28:37,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 15:28:37,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-03-24 15:28:37,297 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 52 [2021-03-24 15:28:37,297 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 1279 transitions, 53118 flow. Second operand has 9 states, 9 states have (on average 31.77777777777778) internal successors, (286), 9 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:28:37,297 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:28:37,297 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 52 [2021-03-24 15:28:37,297 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:28:42,662 INFO L129 PetriNetUnfolder]: 6905/16285 cut-off events. [2021-03-24 15:28:42,662 INFO L130 PetriNetUnfolder]: For 956143/960577 co-relation queries the response was YES. [2021-03-24 15:28:42,783 INFO L84 FinitePrefix]: Finished finitePrefix Result has 181424 conditions, 16285 events. 6905/16285 cut-off events. For 956143/960577 co-relation queries the response was YES. Maximal size of possible extension queue 1338. Compared 180975 event pairs, 1421 based on Foata normal form. 786/16499 useless extension candidates. Maximal degree in co-relation 180681. Up to 4857 conditions per place. [2021-03-24 15:28:42,853 INFO L132 encePairwiseOnDemand]: 40/52 looper letters, 294 selfloop transitions, 1023 changer transitions 11/1349 dead transitions. [2021-03-24 15:28:42,854 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 1349 transitions, 57244 flow [2021-03-24 15:28:42,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-03-24 15:28:42,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-03-24 15:28:42,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 498 transitions. [2021-03-24 15:28:42,855 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7980769230769231 [2021-03-24 15:28:42,855 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 498 transitions. [2021-03-24 15:28:42,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 498 transitions. [2021-03-24 15:28:42,855 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:28:42,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 498 transitions. [2021-03-24 15:28:42,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 41.5) internal successors, (498), 12 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:28:42,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 52.0) internal successors, (676), 13 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:28:42,856 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 52.0) internal successors, (676), 13 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:28:42,856 INFO L185 Difference]: Start difference. First operand has 249 places, 1279 transitions, 53118 flow. Second operand 12 states and 498 transitions. [2021-03-24 15:28:42,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 1349 transitions, 57244 flow [2021-03-24 15:28:46,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 1349 transitions, 55933 flow, removed 0 selfloop flow, removed 5 redundant places. [2021-03-24 15:28:46,554 INFO L241 Difference]: Finished difference. Result has 256 places, 1292 transitions, 54266 flow [2021-03-24 15:28:46,555 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=51803, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1003, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=54266, PETRI_PLACES=256, PETRI_TRANSITIONS=1292} [2021-03-24 15:28:46,555 INFO L343 CegarLoopForPetriNet]: 49 programPoint places, 207 predicate places. [2021-03-24 15:28:46,555 INFO L480 AbstractCegarLoop]: Abstraction has has 256 places, 1292 transitions, 54266 flow [2021-03-24 15:28:46,555 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 31.77777777777778) internal successors, (286), 9 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:28:46,555 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:28:46,555 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:28:46,555 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-03-24 15:28:46,556 INFO L428 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 15:28:46,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:28:46,556 INFO L82 PathProgramCache]: Analyzing trace with hash -1432664267, now seen corresponding path program 41 times [2021-03-24 15:28:46,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:28:46,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826399397] [2021-03-24 15:28:46,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:28:46,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:28:46,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:28:46,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:28:46,570 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:28:46,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:28:46,574 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:28:46,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:28:46,577 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:28:46,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:28:46,582 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:28:46,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:28:46,587 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:28:46,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:28:46,592 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:28:46,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:28:46,597 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:28:46,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:28:46,604 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:28:46,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:28:46,611 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:28:46,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:28:46,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:28:46,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826399397] [2021-03-24 15:28:46,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:28:46,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-24 15:28:46,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760911695] [2021-03-24 15:28:46,612 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-24 15:28:46,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:28:46,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-24 15:28:46,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-03-24 15:28:46,613 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 52 [2021-03-24 15:28:46,613 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 1292 transitions, 54266 flow. Second operand has 11 states, 11 states have (on average 31.454545454545453) internal successors, (346), 11 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) [2021-03-24 15:28:46,613 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:28:46,613 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 52 [2021-03-24 15:28:46,613 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:28:52,110 INFO L129 PetriNetUnfolder]: 6946/16472 cut-off events. [2021-03-24 15:28:52,110 INFO L130 PetriNetUnfolder]: For 987219/991536 co-relation queries the response was YES. [2021-03-24 15:28:52,241 INFO L84 FinitePrefix]: Finished finitePrefix Result has 185990 conditions, 16472 events. 6946/16472 cut-off events. For 987219/991536 co-relation queries the response was YES. Maximal size of possible extension queue 1357. Compared 184095 event pairs, 1421 based on Foata normal form. 798/16686 useless extension candidates. Maximal degree in co-relation 185215. Up to 4860 conditions per place. [2021-03-24 15:28:52,314 INFO L132 encePairwiseOnDemand]: 40/52 looper letters, 313 selfloop transitions, 1016 changer transitions 43/1393 dead transitions. [2021-03-24 15:28:52,314 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 1393 transitions, 59582 flow [2021-03-24 15:28:52,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-03-24 15:28:52,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-03-24 15:28:52,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 689 transitions. [2021-03-24 15:28:52,315 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7794117647058824 [2021-03-24 15:28:52,315 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 689 transitions. [2021-03-24 15:28:52,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 689 transitions. [2021-03-24 15:28:52,316 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:28:52,316 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 689 transitions. [2021-03-24 15:28:52,317 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 40.529411764705884) internal successors, (689), 17 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) [2021-03-24 15:28:52,317 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 52.0) internal successors, (936), 18 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) [2021-03-24 15:28:52,318 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 52.0) internal successors, (936), 18 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) [2021-03-24 15:28:52,318 INFO L185 Difference]: Start difference. First operand has 256 places, 1292 transitions, 54266 flow. Second operand 17 states and 689 transitions. [2021-03-24 15:28:52,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 1393 transitions, 59582 flow [2021-03-24 15:28:56,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 1393 transitions, 59176 flow, removed 8 selfloop flow, removed 4 redundant places. [2021-03-24 15:28:56,633 INFO L241 Difference]: Finished difference. Result has 270 places, 1285 transitions, 55296 flow [2021-03-24 15:28:56,634 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=53883, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=982, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=55296, PETRI_PLACES=270, PETRI_TRANSITIONS=1285} [2021-03-24 15:28:56,634 INFO L343 CegarLoopForPetriNet]: 49 programPoint places, 221 predicate places. [2021-03-24 15:28:56,634 INFO L480 AbstractCegarLoop]: Abstraction has has 270 places, 1285 transitions, 55296 flow [2021-03-24 15:28:56,634 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 31.454545454545453) internal successors, (346), 11 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) [2021-03-24 15:28:56,634 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:28:56,635 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:28:56,635 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-03-24 15:28:56,635 INFO L428 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 15:28:56,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:28:56,635 INFO L82 PathProgramCache]: Analyzing trace with hash -552035601, now seen corresponding path program 42 times [2021-03-24 15:28:56,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:28:56,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293568000] [2021-03-24 15:28:56,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:28:56,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:28:56,644 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:28:56,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:28:56,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:28:56,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:28:56,649 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:28:56,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:28:56,653 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:28:56,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:28:56,654 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:28:56,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 15:28:56,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:28:56,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:28:56,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:28:56,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:28:56,658 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:28:56,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:28:56,662 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:28:56,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:28:56,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:28:56,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293568000] [2021-03-24 15:28:56,663 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:28:56,663 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 15:28:56,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097490962] [2021-03-24 15:28:56,663 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 15:28:56,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:28:56,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 15:28:56,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-24 15:28:56,664 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 52 [2021-03-24 15:28:56,664 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 1285 transitions, 55296 flow. Second operand has 7 states, 7 states have (on average 32.285714285714285) internal successors, (226), 7 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:28:56,664 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:28:56,664 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 52 [2021-03-24 15:28:56,664 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:29:01,593 INFO L129 PetriNetUnfolder]: 6433/15429 cut-off events. [2021-03-24 15:29:01,596 INFO L130 PetriNetUnfolder]: For 1036813/1041420 co-relation queries the response was YES. [2021-03-24 15:29:01,716 INFO L84 FinitePrefix]: Finished finitePrefix Result has 181112 conditions, 15429 events. 6433/15429 cut-off events. For 1036813/1041420 co-relation queries the response was YES. Maximal size of possible extension queue 1288. Compared 172297 event pairs, 830 based on Foata normal form. 814/15700 useless extension candidates. Maximal degree in co-relation 180338. Up to 4132 conditions per place. [2021-03-24 15:29:01,782 INFO L132 encePairwiseOnDemand]: 40/52 looper letters, 202 selfloop transitions, 1123 changer transitions 2/1348 dead transitions. [2021-03-24 15:29:01,782 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 1348 transitions, 59302 flow [2021-03-24 15:29:01,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 15:29:01,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 15:29:01,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 288 transitions. [2021-03-24 15:29:01,783 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7912087912087912 [2021-03-24 15:29:01,783 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 288 transitions. [2021-03-24 15:29:01,783 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 288 transitions. [2021-03-24 15:29:01,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:29:01,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 288 transitions. [2021-03-24 15:29:01,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 41.142857142857146) internal successors, (288), 7 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:29:01,784 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 52.0) internal successors, (416), 8 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:29:01,784 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 52.0) internal successors, (416), 8 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:29:01,784 INFO L185 Difference]: Start difference. First operand has 270 places, 1285 transitions, 55296 flow. Second operand 7 states and 288 transitions. [2021-03-24 15:29:01,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 1348 transitions, 59302 flow [2021-03-24 15:29:05,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 1348 transitions, 58917 flow, removed 4 selfloop flow, removed 6 redundant places. [2021-03-24 15:29:05,420 INFO L241 Difference]: Finished difference. Result has 271 places, 1313 transitions, 57954 flow [2021-03-24 15:29:05,421 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=54917, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1095, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=57954, PETRI_PLACES=271, PETRI_TRANSITIONS=1313} [2021-03-24 15:29:05,421 INFO L343 CegarLoopForPetriNet]: 49 programPoint places, 222 predicate places. [2021-03-24 15:29:05,421 INFO L480 AbstractCegarLoop]: Abstraction has has 271 places, 1313 transitions, 57954 flow [2021-03-24 15:29:05,422 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 32.285714285714285) internal successors, (226), 7 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:29:05,422 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:29:05,422 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:29:05,422 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-03-24 15:29:05,422 INFO L428 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 15:29:05,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:29:05,422 INFO L82 PathProgramCache]: Analyzing trace with hash 261454759, now seen corresponding path program 43 times [2021-03-24 15:29:05,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:29:05,423 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762275201] [2021-03-24 15:29:05,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:29:05,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:29:05,432 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:29:05,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:29:05,434 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:29:05,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:29:05,437 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:29:05,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:29:05,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:29:05,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:29:05,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:29:05,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 15:29:05,445 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:29:05,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:29:05,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:29:05,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:29:05,448 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:29:05,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:29:05,452 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:29:05,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:29:05,457 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:29:05,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:29:05,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:29:05,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762275201] [2021-03-24 15:29:05,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:29:05,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 15:29:05,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350880489] [2021-03-24 15:29:05,459 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 15:29:05,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:29:05,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 15:29:05,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-03-24 15:29:05,459 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 52 [2021-03-24 15:29:05,459 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 1313 transitions, 57954 flow. Second operand has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:29:05,460 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:29:05,460 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 52 [2021-03-24 15:29:05,460 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:29:10,427 INFO L129 PetriNetUnfolder]: 5579/14116 cut-off events. [2021-03-24 15:29:10,427 INFO L130 PetriNetUnfolder]: For 1076975/1081201 co-relation queries the response was YES. [2021-03-24 15:29:10,530 INFO L84 FinitePrefix]: Finished finitePrefix Result has 176416 conditions, 14116 events. 5579/14116 cut-off events. For 1076975/1081201 co-relation queries the response was YES. Maximal size of possible extension queue 1227. Compared 160590 event pairs, 671 based on Foata normal form. 1069/14767 useless extension candidates. Maximal degree in co-relation 175654. Up to 3112 conditions per place. [2021-03-24 15:29:10,590 INFO L132 encePairwiseOnDemand]: 40/52 looper letters, 218 selfloop transitions, 1144 changer transitions 22/1405 dead transitions. [2021-03-24 15:29:10,590 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 1405 transitions, 62654 flow [2021-03-24 15:29:10,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 15:29:10,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 15:29:10,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 373 transitions. [2021-03-24 15:29:10,591 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7970085470085471 [2021-03-24 15:29:10,591 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 373 transitions. [2021-03-24 15:29:10,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 373 transitions. [2021-03-24 15:29:10,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:29:10,591 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 373 transitions. [2021-03-24 15:29:10,592 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 41.44444444444444) internal successors, (373), 9 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:29:10,592 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 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) [2021-03-24 15:29:10,592 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 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) [2021-03-24 15:29:10,592 INFO L185 Difference]: Start difference. First operand has 271 places, 1313 transitions, 57954 flow. Second operand 9 states and 373 transitions. [2021-03-24 15:29:10,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 1405 transitions, 62654 flow [2021-03-24 15:29:13,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 1405 transitions, 60705 flow, removed 0 selfloop flow, removed 5 redundant places. [2021-03-24 15:29:13,881 INFO L241 Difference]: Finished difference. Result has 276 places, 1332 transitions, 58668 flow [2021-03-24 15:29:13,883 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=55902, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1099, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=58668, PETRI_PLACES=276, PETRI_TRANSITIONS=1332} [2021-03-24 15:29:13,883 INFO L343 CegarLoopForPetriNet]: 49 programPoint places, 227 predicate places. [2021-03-24 15:29:13,883 INFO L480 AbstractCegarLoop]: Abstraction has has 276 places, 1332 transitions, 58668 flow [2021-03-24 15:29:13,883 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:29:13,883 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:29:13,883 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:29:13,883 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-03-24 15:29:13,883 INFO L428 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 15:29:13,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:29:13,884 INFO L82 PathProgramCache]: Analyzing trace with hash -1935729847, now seen corresponding path program 44 times [2021-03-24 15:29:13,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:29:13,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299564101] [2021-03-24 15:29:13,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:29:13,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:29:13,898 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:29:13,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:29:13,901 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:29:13,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:29:13,903 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:29:13,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:29:13,907 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:29:13,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:29:13,911 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:29:13,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:29:13,912 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:29:13,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:29:13,913 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:29:13,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 15:29:13,916 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:29:13,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:29:13,917 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:29:13,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:29:13,927 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:29:13,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:29:13,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:29:13,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299564101] [2021-03-24 15:29:13,928 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:29:13,928 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 15:29:13,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928924740] [2021-03-24 15:29:13,929 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 15:29:13,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:29:13,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 15:29:13,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-03-24 15:29:13,929 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 52 [2021-03-24 15:29:13,929 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 1332 transitions, 58668 flow. Second operand has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:29:13,929 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:29:13,930 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 52 [2021-03-24 15:29:13,930 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:29:18,880 INFO L129 PetriNetUnfolder]: 5382/13602 cut-off events. [2021-03-24 15:29:18,881 INFO L130 PetriNetUnfolder]: For 1040933/1044673 co-relation queries the response was YES. [2021-03-24 15:29:18,987 INFO L84 FinitePrefix]: Finished finitePrefix Result has 169674 conditions, 13602 events. 5382/13602 cut-off events. For 1040933/1044673 co-relation queries the response was YES. Maximal size of possible extension queue 1198. Compared 153814 event pairs, 510 based on Foata normal form. 882/14049 useless extension candidates. Maximal degree in co-relation 168900. Up to 3519 conditions per place. [2021-03-24 15:29:19,046 INFO L132 encePairwiseOnDemand]: 40/52 looper letters, 104 selfloop transitions, 1241 changer transitions 18/1384 dead transitions. [2021-03-24 15:29:19,046 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 1384 transitions, 62503 flow [2021-03-24 15:29:19,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 15:29:19,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 15:29:19,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 372 transitions. [2021-03-24 15:29:19,047 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7948717948717948 [2021-03-24 15:29:19,047 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 372 transitions. [2021-03-24 15:29:19,047 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 372 transitions. [2021-03-24 15:29:19,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:29:19,047 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 372 transitions. [2021-03-24 15:29:19,048 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 41.333333333333336) internal successors, (372), 9 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:29:19,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 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) [2021-03-24 15:29:19,048 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 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) [2021-03-24 15:29:19,048 INFO L185 Difference]: Start difference. First operand has 276 places, 1332 transitions, 58668 flow. Second operand 9 states and 372 transitions. [2021-03-24 15:29:19,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 1384 transitions, 62503 flow [2021-03-24 15:29:22,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 1384 transitions, 60945 flow, removed 11 selfloop flow, removed 7 redundant places. [2021-03-24 15:29:22,169 INFO L241 Difference]: Finished difference. Result has 278 places, 1327 transitions, 59047 flow [2021-03-24 15:29:22,170 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=57123, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1228, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=59047, PETRI_PLACES=278, PETRI_TRANSITIONS=1327} [2021-03-24 15:29:22,170 INFO L343 CegarLoopForPetriNet]: 49 programPoint places, 229 predicate places. [2021-03-24 15:29:22,170 INFO L480 AbstractCegarLoop]: Abstraction has has 278 places, 1327 transitions, 59047 flow [2021-03-24 15:29:22,170 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:29:22,170 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:29:22,170 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:29:22,171 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-03-24 15:29:22,171 INFO L428 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 15:29:22,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:29:22,171 INFO L82 PathProgramCache]: Analyzing trace with hash -21181071, now seen corresponding path program 45 times [2021-03-24 15:29:22,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:29:22,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124442893] [2021-03-24 15:29:22,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:29:22,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:29:22,181 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:29:22,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:29:22,184 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:29:22,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:29:22,187 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:29:22,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 15:29:22,190 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:29:22,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:29:22,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:29:22,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:29:22,195 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:29:22,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:29:22,199 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:29:22,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:29:22,204 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:29:22,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:29:22,209 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:29:22,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:29:22,214 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:29:22,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:29:22,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:29:22,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124442893] [2021-03-24 15:29:22,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:29:22,215 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-24 15:29:22,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085806762] [2021-03-24 15:29:22,215 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 15:29:22,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:29:22,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 15:29:22,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-03-24 15:29:22,216 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 52 [2021-03-24 15:29:22,216 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 1327 transitions, 59047 flow. Second operand has 10 states, 10 states have (on average 31.6) internal successors, (316), 10 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) [2021-03-24 15:29:22,216 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:29:22,216 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 52 [2021-03-24 15:29:22,216 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:29:27,328 INFO L129 PetriNetUnfolder]: 5359/13553 cut-off events. [2021-03-24 15:29:27,328 INFO L130 PetriNetUnfolder]: For 1037022/1040326 co-relation queries the response was YES. [2021-03-24 15:29:27,417 INFO L84 FinitePrefix]: Finished finitePrefix Result has 168914 conditions, 13553 events. 5359/13553 cut-off events. For 1037022/1040326 co-relation queries the response was YES. Maximal size of possible extension queue 1194. Compared 153420 event pairs, 488 based on Foata normal form. 737/13855 useless extension candidates. Maximal degree in co-relation 168152. Up to 3014 conditions per place. [2021-03-24 15:29:27,472 INFO L132 encePairwiseOnDemand]: 40/52 looper letters, 129 selfloop transitions, 1225 changer transitions 70/1445 dead transitions. [2021-03-24 15:29:27,472 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 1445 transitions, 64552 flow [2021-03-24 15:29:27,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-24 15:29:27,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-24 15:29:27,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 535 transitions. [2021-03-24 15:29:27,473 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7914201183431953 [2021-03-24 15:29:27,473 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 535 transitions. [2021-03-24 15:29:27,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 535 transitions. [2021-03-24 15:29:27,473 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:29:27,473 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 535 transitions. [2021-03-24 15:29:27,474 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 41.15384615384615) internal successors, (535), 13 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:29:27,474 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 52.0) internal successors, (728), 14 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:29:27,474 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 52.0) internal successors, (728), 14 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:29:27,474 INFO L185 Difference]: Start difference. First operand has 278 places, 1327 transitions, 59047 flow. Second operand 13 states and 535 transitions. [2021-03-24 15:29:27,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 1445 transitions, 64552 flow [2021-03-24 15:29:30,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 1445 transitions, 63836 flow, removed 5 selfloop flow, removed 4 redundant places. [2021-03-24 15:29:30,422 INFO L241 Difference]: Finished difference. Result has 288 places, 1317 transitions, 60749 flow [2021-03-24 15:29:30,423 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=58356, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1219, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=60749, PETRI_PLACES=288, PETRI_TRANSITIONS=1317} [2021-03-24 15:29:30,423 INFO L343 CegarLoopForPetriNet]: 49 programPoint places, 239 predicate places. [2021-03-24 15:29:30,423 INFO L480 AbstractCegarLoop]: Abstraction has has 288 places, 1317 transitions, 60749 flow [2021-03-24 15:29:30,423 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 31.6) internal successors, (316), 10 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) [2021-03-24 15:29:30,423 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:29:30,423 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:29:30,423 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-03-24 15:29:30,423 INFO L428 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 15:29:30,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:29:30,424 INFO L82 PathProgramCache]: Analyzing trace with hash -294137891, now seen corresponding path program 46 times [2021-03-24 15:29:30,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:29:30,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711678568] [2021-03-24 15:29:30,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:29:30,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:29:30,437 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:29:30,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:29:30,439 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:29:30,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:29:30,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:29:30,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 15:29:30,445 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:29:30,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:29:30,446 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:29:30,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:29:30,450 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:29:30,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:29:30,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:29:30,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:29:30,458 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:29:30,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:29:30,463 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:29:30,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:29:30,469 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:29:30,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:29:30,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:29:30,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711678568] [2021-03-24 15:29:30,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:29:30,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-24 15:29:30,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203491788] [2021-03-24 15:29:30,470 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 15:29:30,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:29:30,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 15:29:30,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-03-24 15:29:30,471 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 52 [2021-03-24 15:29:30,471 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 1317 transitions, 60749 flow. Second operand has 10 states, 10 states have (on average 31.6) internal successors, (316), 10 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) [2021-03-24 15:29:30,471 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:29:30,471 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 52 [2021-03-24 15:29:30,471 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:29:35,595 INFO L129 PetriNetUnfolder]: 5235/13461 cut-off events. [2021-03-24 15:29:35,595 INFO L130 PetriNetUnfolder]: For 1116747/1120019 co-relation queries the response was YES. [2021-03-24 15:29:35,725 INFO L84 FinitePrefix]: Finished finitePrefix Result has 173287 conditions, 13461 events. 5235/13461 cut-off events. For 1116747/1120019 co-relation queries the response was YES. Maximal size of possible extension queue 1173. Compared 153673 event pairs, 473 based on Foata normal form. 805/13827 useless extension candidates. Maximal degree in co-relation 172494. Up to 2980 conditions per place. [2021-03-24 15:29:35,786 INFO L132 encePairwiseOnDemand]: 40/52 looper letters, 125 selfloop transitions, 1240 changer transitions 26/1412 dead transitions. [2021-03-24 15:29:35,786 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 1412 transitions, 65597 flow [2021-03-24 15:29:35,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-24 15:29:35,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-24 15:29:35,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 538 transitions. [2021-03-24 15:29:35,787 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7958579881656804 [2021-03-24 15:29:35,787 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 538 transitions. [2021-03-24 15:29:35,787 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 538 transitions. [2021-03-24 15:29:35,787 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:29:35,787 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 538 transitions. [2021-03-24 15:29:35,788 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 41.38461538461539) internal successors, (538), 13 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:29:35,789 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 52.0) internal successors, (728), 14 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:29:35,789 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 52.0) internal successors, (728), 14 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:29:35,789 INFO L185 Difference]: Start difference. First operand has 288 places, 1317 transitions, 60749 flow. Second operand 13 states and 538 transitions. [2021-03-24 15:29:35,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 1412 transitions, 65597 flow [2021-03-24 15:29:39,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 1412 transitions, 64810 flow, removed 22 selfloop flow, removed 6 redundant places. [2021-03-24 15:29:39,166 INFO L241 Difference]: Finished difference. Result has 296 places, 1327 transitions, 62928 flow [2021-03-24 15:29:39,167 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=60022, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1211, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=62928, PETRI_PLACES=296, PETRI_TRANSITIONS=1327} [2021-03-24 15:29:39,167 INFO L343 CegarLoopForPetriNet]: 49 programPoint places, 247 predicate places. [2021-03-24 15:29:39,167 INFO L480 AbstractCegarLoop]: Abstraction has has 296 places, 1327 transitions, 62928 flow [2021-03-24 15:29:39,167 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 31.6) internal successors, (316), 10 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) [2021-03-24 15:29:39,167 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:29:39,167 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:29:39,167 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-03-24 15:29:39,168 INFO L428 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 15:29:39,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:29:39,168 INFO L82 PathProgramCache]: Analyzing trace with hash -1410911809, now seen corresponding path program 47 times [2021-03-24 15:29:39,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:29:39,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575334590] [2021-03-24 15:29:39,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:29:39,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:29:39,179 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:29:39,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:29:39,187 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:29:39,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:29:39,190 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:29:39,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 15:29:39,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:29:39,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:29:39,194 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:29:39,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:29:39,197 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:29:39,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:29:39,201 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:29:39,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:29:39,205 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:29:39,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:29:39,217 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:29:39,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:29:39,222 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:29:39,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:29:39,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:29:39,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575334590] [2021-03-24 15:29:39,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:29:39,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-24 15:29:39,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124100002] [2021-03-24 15:29:39,223 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 15:29:39,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:29:39,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 15:29:39,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-03-24 15:29:39,224 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 52 [2021-03-24 15:29:39,224 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 1327 transitions, 62928 flow. Second operand has 10 states, 10 states have (on average 31.6) internal successors, (316), 10 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) [2021-03-24 15:29:39,224 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:29:39,224 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 52 [2021-03-24 15:29:39,224 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:29:44,330 INFO L129 PetriNetUnfolder]: 5226/13525 cut-off events. [2021-03-24 15:29:44,330 INFO L130 PetriNetUnfolder]: For 1183452/1186875 co-relation queries the response was YES. [2021-03-24 15:29:44,429 INFO L84 FinitePrefix]: Finished finitePrefix Result has 176227 conditions, 13525 events. 5226/13525 cut-off events. For 1183452/1186875 co-relation queries the response was YES. Maximal size of possible extension queue 1175. Compared 155099 event pairs, 488 based on Foata normal form. 871/13951 useless extension candidates. Maximal degree in co-relation 175417. Up to 2976 conditions per place. [2021-03-24 15:29:44,488 INFO L132 encePairwiseOnDemand]: 40/52 looper letters, 124 selfloop transitions, 1245 changer transitions 26/1416 dead transitions. [2021-03-24 15:29:44,488 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 1416 transitions, 67617 flow [2021-03-24 15:29:44,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-24 15:29:44,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-24 15:29:44,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 538 transitions. [2021-03-24 15:29:44,489 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7958579881656804 [2021-03-24 15:29:44,489 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 538 transitions. [2021-03-24 15:29:44,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 538 transitions. [2021-03-24 15:29:44,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:29:44,489 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 538 transitions. [2021-03-24 15:29:44,490 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 41.38461538461539) internal successors, (538), 13 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:29:44,490 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 52.0) internal successors, (728), 14 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:29:44,490 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 52.0) internal successors, (728), 14 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:29:44,490 INFO L185 Difference]: Start difference. First operand has 296 places, 1327 transitions, 62928 flow. Second operand 13 states and 538 transitions. [2021-03-24 15:29:44,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 1416 transitions, 67617 flow [2021-03-24 15:29:47,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 1416 transitions, 67159 flow, removed 22 selfloop flow, removed 5 redundant places. [2021-03-24 15:29:47,667 INFO L241 Difference]: Finished difference. Result has 305 places, 1331 transitions, 65284 flow [2021-03-24 15:29:47,668 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=62514, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1220, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=65284, PETRI_PLACES=305, PETRI_TRANSITIONS=1331} [2021-03-24 15:29:47,668 INFO L343 CegarLoopForPetriNet]: 49 programPoint places, 256 predicate places. [2021-03-24 15:29:47,668 INFO L480 AbstractCegarLoop]: Abstraction has has 305 places, 1331 transitions, 65284 flow [2021-03-24 15:29:47,668 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 31.6) internal successors, (316), 10 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) [2021-03-24 15:29:47,669 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:29:47,669 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:29:47,669 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-03-24 15:29:47,669 INFO L428 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 15:29:47,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:29:47,669 INFO L82 PathProgramCache]: Analyzing trace with hash 1845027649, now seen corresponding path program 48 times [2021-03-24 15:29:47,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:29:47,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504598275] [2021-03-24 15:29:47,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:29:47,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:29:47,678 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:29:47,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:29:47,681 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:29:47,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:29:47,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:29:47,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 15:29:47,687 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:29:47,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:29:47,688 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:29:47,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:29:47,692 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:29:47,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:29:47,696 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:29:47,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:29:47,701 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:29:47,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:29:47,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:29:47,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:29:47,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:29:47,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:29:47,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:29:47,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504598275] [2021-03-24 15:29:47,715 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:29:47,715 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-24 15:29:47,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859246587] [2021-03-24 15:29:47,715 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 15:29:47,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:29:47,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 15:29:47,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-03-24 15:29:47,716 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 52 [2021-03-24 15:29:47,716 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 1331 transitions, 65284 flow. Second operand has 10 states, 10 states have (on average 31.6) internal successors, (316), 10 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) [2021-03-24 15:29:47,716 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:29:47,716 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 52 [2021-03-24 15:29:47,716 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:29:53,206 INFO L129 PetriNetUnfolder]: 5198/13514 cut-off events. [2021-03-24 15:29:53,206 INFO L130 PetriNetUnfolder]: For 1260484/1263977 co-relation queries the response was YES. [2021-03-24 15:29:53,300 INFO L84 FinitePrefix]: Finished finitePrefix Result has 181126 conditions, 13514 events. 5198/13514 cut-off events. For 1260484/1263977 co-relation queries the response was YES. Maximal size of possible extension queue 1161. Compared 155567 event pairs, 475 based on Foata normal form. 803/13879 useless extension candidates. Maximal degree in co-relation 180323. Up to 2969 conditions per place. [2021-03-24 15:29:53,356 INFO L132 encePairwiseOnDemand]: 40/52 looper letters, 120 selfloop transitions, 1237 changer transitions 34/1412 dead transitions. [2021-03-24 15:29:53,356 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 1412 transitions, 69881 flow [2021-03-24 15:29:53,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-24 15:29:53,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-24 15:29:53,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 538 transitions. [2021-03-24 15:29:53,357 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7958579881656804 [2021-03-24 15:29:53,357 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 538 transitions. [2021-03-24 15:29:53,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 538 transitions. [2021-03-24 15:29:53,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:29:53,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 538 transitions. [2021-03-24 15:29:53,358 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 41.38461538461539) internal successors, (538), 13 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:29:53,358 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 52.0) internal successors, (728), 14 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:29:53,359 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 52.0) internal successors, (728), 14 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:29:53,359 INFO L185 Difference]: Start difference. First operand has 305 places, 1331 transitions, 65284 flow. Second operand 13 states and 538 transitions. [2021-03-24 15:29:53,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 1412 transitions, 69881 flow [2021-03-24 15:29:56,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 1412 transitions, 68796 flow, removed 33 selfloop flow, removed 7 redundant places. [2021-03-24 15:29:56,717 INFO L241 Difference]: Finished difference. Result has 312 places, 1323 transitions, 66652 flow [2021-03-24 15:29:56,718 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=64263, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1216, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=66652, PETRI_PLACES=312, PETRI_TRANSITIONS=1323} [2021-03-24 15:29:56,718 INFO L343 CegarLoopForPetriNet]: 49 programPoint places, 263 predicate places. [2021-03-24 15:29:56,718 INFO L480 AbstractCegarLoop]: Abstraction has has 312 places, 1323 transitions, 66652 flow [2021-03-24 15:29:56,718 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 31.6) internal successors, (316), 10 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) [2021-03-24 15:29:56,718 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:29:56,719 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:29:56,719 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-03-24 15:29:56,719 INFO L428 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 15:29:56,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:29:56,719 INFO L82 PathProgramCache]: Analyzing trace with hash -22562339, now seen corresponding path program 49 times [2021-03-24 15:29:56,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:29:56,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138021737] [2021-03-24 15:29:56,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:29:56,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:29:56,732 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:29:56,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:29:56,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:29:56,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:29:56,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:29:56,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:29:56,741 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:29:56,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:29:56,745 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:29:56,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:29:56,750 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:29:56,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:29:56,755 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:29:56,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:29:56,761 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:29:56,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:29:56,767 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:29:56,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:29:56,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:29:56,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138021737] [2021-03-24 15:29:56,767 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:29:56,768 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-24 15:29:56,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645964139] [2021-03-24 15:29:56,768 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 15:29:56,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:29:56,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 15:29:56,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-03-24 15:29:56,768 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 52 [2021-03-24 15:29:56,769 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 1323 transitions, 66652 flow. Second operand has 10 states, 10 states have (on average 31.6) internal successors, (316), 10 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) [2021-03-24 15:29:56,769 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:29:56,769 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 52 [2021-03-24 15:29:56,769 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:30:00,152 INFO L129 PetriNetUnfolder]: 2642/7825 cut-off events. [2021-03-24 15:30:00,153 INFO L130 PetriNetUnfolder]: For 619623/622587 co-relation queries the response was YES. [2021-03-24 15:30:00,207 INFO L84 FinitePrefix]: Finished finitePrefix Result has 111393 conditions, 7825 events. 2642/7825 cut-off events. For 619623/622587 co-relation queries the response was YES. Maximal size of possible extension queue 692. Compared 88743 event pairs, 731 based on Foata normal form. 939/8631 useless extension candidates. Maximal degree in co-relation 110906. Up to 2745 conditions per place. [2021-03-24 15:30:00,236 INFO L132 encePairwiseOnDemand]: 40/52 looper letters, 355 selfloop transitions, 624 changer transitions 161/1161 dead transitions. [2021-03-24 15:30:00,237 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 1161 transitions, 56849 flow [2021-03-24 15:30:00,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-24 15:30:00,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-24 15:30:00,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 520 transitions. [2021-03-24 15:30:00,237 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7692307692307693 [2021-03-24 15:30:00,237 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 520 transitions. [2021-03-24 15:30:00,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 520 transitions. [2021-03-24 15:30:00,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:30:00,238 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 520 transitions. [2021-03-24 15:30:00,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 40.0) internal successors, (520), 13 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:30:00,239 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 52.0) internal successors, (728), 14 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:30:00,239 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 52.0) internal successors, (728), 14 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:30:00,239 INFO L185 Difference]: Start difference. First operand has 312 places, 1323 transitions, 66652 flow. Second operand 13 states and 520 transitions. [2021-03-24 15:30:00,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 1161 transitions, 56849 flow [2021-03-24 15:30:02,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 1161 transitions, 55663 flow, removed 13 selfloop flow, removed 6 redundant places. [2021-03-24 15:30:02,138 INFO L241 Difference]: Finished difference. Result has 323 places, 959 transitions, 44279 flow [2021-03-24 15:30:02,139 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=51697, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=615, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=485, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=44279, PETRI_PLACES=323, PETRI_TRANSITIONS=959} [2021-03-24 15:30:02,139 INFO L343 CegarLoopForPetriNet]: 49 programPoint places, 274 predicate places. [2021-03-24 15:30:02,139 INFO L480 AbstractCegarLoop]: Abstraction has has 323 places, 959 transitions, 44279 flow [2021-03-24 15:30:02,139 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 31.6) internal successors, (316), 10 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) [2021-03-24 15:30:02,139 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:30:02,139 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:30:02,140 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-03-24 15:30:02,140 INFO L428 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 15:30:02,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:30:02,140 INFO L82 PathProgramCache]: Analyzing trace with hash -53444145, now seen corresponding path program 50 times [2021-03-24 15:30:02,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:30:02,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612237169] [2021-03-24 15:30:02,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:30:02,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:30:02,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:30:02,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:30:02,154 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:30:02,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:30:02,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:30:02,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:30:02,160 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:30:02,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:30:02,160 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:30:02,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:30:02,161 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:30:02,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:30:02,161 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:30:02,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:30:02,165 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:30:02,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:30:02,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:30:02,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612237169] [2021-03-24 15:30:02,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:30:02,166 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-24 15:30:02,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555360994] [2021-03-24 15:30:02,166 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-24 15:30:02,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:30:02,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-24 15:30:02,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-03-24 15:30:02,166 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 52 [2021-03-24 15:30:02,166 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 959 transitions, 44279 flow. Second operand has 6 states, 6 states have (on average 32.666666666666664) internal successors, (196), 6 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:30:02,166 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:30:02,166 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 52 [2021-03-24 15:30:02,166 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:30:04,239 INFO L129 PetriNetUnfolder]: 2135/6265 cut-off events. [2021-03-24 15:30:04,240 INFO L130 PetriNetUnfolder]: For 446981/449233 co-relation queries the response was YES. [2021-03-24 15:30:04,285 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82709 conditions, 6265 events. 2135/6265 cut-off events. For 446981/449233 co-relation queries the response was YES. Maximal size of possible extension queue 539. Compared 67895 event pairs, 796 based on Foata normal form. 379/6549 useless extension candidates. Maximal degree in co-relation 82256. Up to 3562 conditions per place. [2021-03-24 15:30:04,310 INFO L132 encePairwiseOnDemand]: 40/52 looper letters, 544 selfloop transitions, 315 changer transitions 23/903 dead transitions. [2021-03-24 15:30:04,310 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 903 transitions, 41399 flow [2021-03-24 15:30:04,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-24 15:30:04,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-24 15:30:04,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 240 transitions. [2021-03-24 15:30:04,311 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7692307692307693 [2021-03-24 15:30:04,311 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 240 transitions. [2021-03-24 15:30:04,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 240 transitions. [2021-03-24 15:30:04,311 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:30:04,311 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 240 transitions. [2021-03-24 15:30:04,312 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 40.0) internal successors, (240), 6 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:30:04,312 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 52.0) internal successors, (364), 7 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) [2021-03-24 15:30:04,312 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 52.0) internal successors, (364), 7 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) [2021-03-24 15:30:04,312 INFO L185 Difference]: Start difference. First operand has 323 places, 959 transitions, 44279 flow. Second operand 6 states and 240 transitions. [2021-03-24 15:30:04,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 903 transitions, 41399 flow [2021-03-24 15:30:05,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 903 transitions, 40557 flow, removed 4 selfloop flow, removed 8 redundant places. [2021-03-24 15:30:05,618 INFO L241 Difference]: Finished difference. Result has 321 places, 867 transitions, 38077 flow [2021-03-24 15:30:05,618 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=38319, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=883, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=315, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=568, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=38077, PETRI_PLACES=321, PETRI_TRANSITIONS=867} [2021-03-24 15:30:05,619 INFO L343 CegarLoopForPetriNet]: 49 programPoint places, 272 predicate places. [2021-03-24 15:30:05,619 INFO L480 AbstractCegarLoop]: Abstraction has has 321 places, 867 transitions, 38077 flow [2021-03-24 15:30:05,619 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 32.666666666666664) internal successors, (196), 6 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:30:05,619 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:30:05,619 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:30:05,619 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-03-24 15:30:05,619 INFO L428 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 15:30:05,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:30:05,620 INFO L82 PathProgramCache]: Analyzing trace with hash -1497318725, now seen corresponding path program 51 times [2021-03-24 15:30:05,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:30:05,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113995333] [2021-03-24 15:30:05,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:30:05,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:30:05,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:30:05,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:30:05,631 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:30:05,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:30:05,634 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:30:05,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:30:05,638 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:30:05,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:30:05,638 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:30:05,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:30:05,639 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:30:05,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:30:05,639 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:30:05,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:30:05,640 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:30:05,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:30:05,644 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:30:05,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:30:05,649 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:30:05,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:30:05,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:30:05,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113995333] [2021-03-24 15:30:05,649 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:30:05,649 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 15:30:05,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424590038] [2021-03-24 15:30:05,650 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 15:30:05,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:30:05,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 15:30:05,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-03-24 15:30:05,650 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 52 [2021-03-24 15:30:05,650 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 867 transitions, 38077 flow. Second operand has 7 states, 7 states have (on average 32.285714285714285) internal successors, (226), 7 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:30:05,650 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:30:05,650 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 52 [2021-03-24 15:30:05,650 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:30:07,283 INFO L129 PetriNetUnfolder]: 1795/5143 cut-off events. [2021-03-24 15:30:07,283 INFO L130 PetriNetUnfolder]: For 336418/337354 co-relation queries the response was YES. [2021-03-24 15:30:07,320 INFO L84 FinitePrefix]: Finished finitePrefix Result has 64011 conditions, 5143 events. 1795/5143 cut-off events. For 336418/337354 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 52930 event pairs, 754 based on Foata normal form. 124/5169 useless extension candidates. Maximal degree in co-relation 63687. Up to 3123 conditions per place. [2021-03-24 15:30:07,338 INFO L132 encePairwiseOnDemand]: 40/52 looper letters, 446 selfloop transitions, 198 changer transitions 50/715 dead transitions. [2021-03-24 15:30:07,338 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 715 transitions, 31118 flow [2021-03-24 15:30:07,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 15:30:07,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 15:30:07,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 320 transitions. [2021-03-24 15:30:07,339 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7692307692307693 [2021-03-24 15:30:07,339 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 320 transitions. [2021-03-24 15:30:07,339 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 320 transitions. [2021-03-24 15:30:07,340 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:30:07,340 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 320 transitions. [2021-03-24 15:30:07,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:30:07,340 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 52.0) internal successors, (468), 9 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) [2021-03-24 15:30:07,340 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 52.0) internal successors, (468), 9 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) [2021-03-24 15:30:07,340 INFO L185 Difference]: Start difference. First operand has 321 places, 867 transitions, 38077 flow. Second operand 8 states and 320 transitions. [2021-03-24 15:30:07,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 715 transitions, 31118 flow [2021-03-24 15:30:08,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 715 transitions, 30324 flow, removed 32 selfloop flow, removed 12 redundant places. [2021-03-24 15:30:08,302 INFO L241 Difference]: Finished difference. Result has 318 places, 646 transitions, 26059 flow [2021-03-24 15:30:08,302 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=28245, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=688, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=198, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=490, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=26059, PETRI_PLACES=318, PETRI_TRANSITIONS=646} [2021-03-24 15:30:08,302 INFO L343 CegarLoopForPetriNet]: 49 programPoint places, 269 predicate places. [2021-03-24 15:30:08,303 INFO L480 AbstractCegarLoop]: Abstraction has has 318 places, 646 transitions, 26059 flow [2021-03-24 15:30:08,303 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 32.285714285714285) internal successors, (226), 7 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:30:08,303 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:30:08,303 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:30:08,303 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-03-24 15:30:08,303 INFO L428 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 15:30:08,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:30:08,303 INFO L82 PathProgramCache]: Analyzing trace with hash 692158283, now seen corresponding path program 52 times [2021-03-24 15:30:08,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:30:08,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433892868] [2021-03-24 15:30:08,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:30:08,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:30:08,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:30:08,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:30:08,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:30:08,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:30:08,317 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:30:08,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:30:08,320 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:30:08,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:30:08,325 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:30:08,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:30:08,325 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:30:08,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:30:08,326 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:30:08,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:30:08,330 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:30:08,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:30:08,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:30:08,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433892868] [2021-03-24 15:30:08,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:30:08,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 15:30:08,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034776620] [2021-03-24 15:30:08,331 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 15:30:08,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:30:08,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 15:30:08,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-03-24 15:30:08,332 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 52 [2021-03-24 15:30:08,332 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 646 transitions, 26059 flow. Second operand has 7 states, 7 states have (on average 32.285714285714285) internal successors, (226), 7 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:30:08,332 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:30:08,332 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 52 [2021-03-24 15:30:08,333 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:30:09,620 INFO L129 PetriNetUnfolder]: 1674/4803 cut-off events. [2021-03-24 15:30:09,621 INFO L130 PetriNetUnfolder]: For 287131/287723 co-relation queries the response was YES. [2021-03-24 15:30:09,653 INFO L84 FinitePrefix]: Finished finitePrefix Result has 55830 conditions, 4803 events. 1674/4803 cut-off events. For 287131/287723 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 48810 event pairs, 680 based on Foata normal form. 60/4778 useless extension candidates. Maximal degree in co-relation 55505. Up to 2742 conditions per place. [2021-03-24 15:30:09,670 INFO L132 encePairwiseOnDemand]: 40/52 looper letters, 358 selfloop transitions, 263 changer transitions 15/657 dead transitions. [2021-03-24 15:30:09,670 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 657 transitions, 27129 flow [2021-03-24 15:30:09,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 15:30:09,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 15:30:09,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 323 transitions. [2021-03-24 15:30:09,671 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7764423076923077 [2021-03-24 15:30:09,671 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 323 transitions. [2021-03-24 15:30:09,671 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 323 transitions. [2021-03-24 15:30:09,671 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:30:09,671 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 323 transitions. [2021-03-24 15:30:09,672 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 40.375) internal successors, (323), 8 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:30:09,672 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 52.0) internal successors, (468), 9 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) [2021-03-24 15:30:09,672 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 52.0) internal successors, (468), 9 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) [2021-03-24 15:30:09,672 INFO L185 Difference]: Start difference. First operand has 318 places, 646 transitions, 26059 flow. Second operand 8 states and 323 transitions. [2021-03-24 15:30:09,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 657 transitions, 27129 flow [2021-03-24 15:30:10,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 657 transitions, 26669 flow, removed 77 selfloop flow, removed 10 redundant places. [2021-03-24 15:30:10,319 INFO L241 Difference]: Finished difference. Result has 316 places, 621 transitions, 24917 flow [2021-03-24 15:30:10,320 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=24981, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=634, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=263, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=24917, PETRI_PLACES=316, PETRI_TRANSITIONS=621} [2021-03-24 15:30:10,320 INFO L343 CegarLoopForPetriNet]: 49 programPoint places, 267 predicate places. [2021-03-24 15:30:10,320 INFO L480 AbstractCegarLoop]: Abstraction has has 316 places, 621 transitions, 24917 flow [2021-03-24 15:30:10,320 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 32.285714285714285) internal successors, (226), 7 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:30:10,320 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:30:10,320 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:30:10,320 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-03-24 15:30:10,320 INFO L428 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 15:30:10,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:30:10,320 INFO L82 PathProgramCache]: Analyzing trace with hash -152065159, now seen corresponding path program 53 times [2021-03-24 15:30:10,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:30:10,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436478346] [2021-03-24 15:30:10,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:30:10,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:30:10,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:30:10,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:30:10,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:30:10,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:30:10,334 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:30:10,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:30:10,338 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:30:10,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:30:10,338 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:30:10,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:30:10,339 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:30:10,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:30:10,339 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:30:10,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 15:30:10,343 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:30:10,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:30:10,343 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:30:10,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:30:10,347 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:30:10,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:30:10,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:30:10,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436478346] [2021-03-24 15:30:10,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:30:10,348 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 15:30:10,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973478683] [2021-03-24 15:30:10,348 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 15:30:10,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:30:10,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 15:30:10,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-24 15:30:10,349 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 52 [2021-03-24 15:30:10,349 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 621 transitions, 24917 flow. Second operand has 7 states, 7 states have (on average 32.285714285714285) internal successors, (226), 7 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:30:10,349 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:30:10,349 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 52 [2021-03-24 15:30:10,349 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:30:10,966 INFO L129 PetriNetUnfolder]: 643/2245 cut-off events. [2021-03-24 15:30:10,967 INFO L130 PetriNetUnfolder]: For 178962/179320 co-relation queries the response was YES. [2021-03-24 15:30:10,980 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29935 conditions, 2245 events. 643/2245 cut-off events. For 178962/179320 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 20463 event pairs, 54 based on Foata normal form. 350/2574 useless extension candidates. Maximal degree in co-relation 29732. Up to 566 conditions per place. [2021-03-24 15:30:10,987 INFO L132 encePairwiseOnDemand]: 40/52 looper letters, 101 selfloop transitions, 352 changer transitions 34/508 dead transitions. [2021-03-24 15:30:10,987 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 508 transitions, 22099 flow [2021-03-24 15:30:10,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 15:30:10,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 15:30:10,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 285 transitions. [2021-03-24 15:30:10,988 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.782967032967033 [2021-03-24 15:30:10,988 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 285 transitions. [2021-03-24 15:30:10,988 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 285 transitions. [2021-03-24 15:30:10,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:30:10,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 285 transitions. [2021-03-24 15:30:10,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 40.714285714285715) internal successors, (285), 7 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:30:10,989 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 52.0) internal successors, (416), 8 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:30:10,989 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 52.0) internal successors, (416), 8 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:30:10,989 INFO L185 Difference]: Start difference. First operand has 316 places, 621 transitions, 24917 flow. Second operand 7 states and 285 transitions. [2021-03-24 15:30:10,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 508 transitions, 22099 flow [2021-03-24 15:30:11,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 508 transitions, 21523 flow, removed 28 selfloop flow, removed 8 redundant places. [2021-03-24 15:30:11,328 INFO L241 Difference]: Finished difference. Result has 315 places, 456 transitions, 19807 flow [2021-03-24 15:30:11,329 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=19767, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=477, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=346, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=19807, PETRI_PLACES=315, PETRI_TRANSITIONS=456} [2021-03-24 15:30:11,329 INFO L343 CegarLoopForPetriNet]: 49 programPoint places, 266 predicate places. [2021-03-24 15:30:11,329 INFO L480 AbstractCegarLoop]: Abstraction has has 315 places, 456 transitions, 19807 flow [2021-03-24 15:30:11,329 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 32.285714285714285) internal successors, (226), 7 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:30:11,329 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:30:11,329 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:30:11,329 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-03-24 15:30:11,329 INFO L428 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 15:30:11,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:30:11,329 INFO L82 PathProgramCache]: Analyzing trace with hash 1984108427, now seen corresponding path program 54 times [2021-03-24 15:30:11,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:30:11,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516626932] [2021-03-24 15:30:11,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:30:11,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:30:11,347 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:30:11,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:30:11,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:30:11,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:30:11,352 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:30:11,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:30:11,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:30:11,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:30:11,359 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:30:11,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:30:11,364 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:30:11,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:30:11,365 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:30:11,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:30:11,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:30:11,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:30:11,374 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:30:11,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:30:11,380 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:30:11,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:30:11,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:30:11,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516626932] [2021-03-24 15:30:11,381 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:30:11,381 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-24 15:30:11,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089147422] [2021-03-24 15:30:11,381 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 15:30:11,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:30:11,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 15:30:11,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-03-24 15:30:11,382 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 52 [2021-03-24 15:30:11,382 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 456 transitions, 19807 flow. Second operand has 10 states, 10 states have (on average 31.6) internal successors, (316), 10 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) [2021-03-24 15:30:11,382 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:30:11,382 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 52 [2021-03-24 15:30:11,382 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:30:11,842 INFO L129 PetriNetUnfolder]: 410/1453 cut-off events. [2021-03-24 15:30:11,843 INFO L130 PetriNetUnfolder]: For 120930/121131 co-relation queries the response was YES. [2021-03-24 15:30:11,854 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21002 conditions, 1453 events. 410/1453 cut-off events. For 120930/121131 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 12052 event pairs, 115 based on Foata normal form. 59/1505 useless extension candidates. Maximal degree in co-relation 20873. Up to 555 conditions per place. [2021-03-24 15:30:11,859 INFO L132 encePairwiseOnDemand]: 40/52 looper letters, 160 selfloop transitions, 64 changer transitions 146/391 dead transitions. [2021-03-24 15:30:11,859 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 391 transitions, 17649 flow [2021-03-24 15:30:11,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-03-24 15:30:11,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-03-24 15:30:11,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 457 transitions. [2021-03-24 15:30:11,860 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7323717948717948 [2021-03-24 15:30:11,860 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 457 transitions. [2021-03-24 15:30:11,861 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 457 transitions. [2021-03-24 15:30:11,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:30:11,861 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 457 transitions. [2021-03-24 15:30:11,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 38.083333333333336) internal successors, (457), 12 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:30:11,862 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 52.0) internal successors, (676), 13 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:30:11,862 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 52.0) internal successors, (676), 13 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:30:11,862 INFO L185 Difference]: Start difference. First operand has 315 places, 456 transitions, 19807 flow. Second operand 12 states and 457 transitions. [2021-03-24 15:30:11,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 391 transitions, 17649 flow [2021-03-24 15:30:12,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 391 transitions, 16703 flow, removed 57 selfloop flow, removed 18 redundant places. [2021-03-24 15:30:12,108 INFO L241 Difference]: Finished difference. Result has 307 places, 222 transitions, 6871 flow [2021-03-24 15:30:12,109 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=15523, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6871, PETRI_PLACES=307, PETRI_TRANSITIONS=222} [2021-03-24 15:30:12,109 INFO L343 CegarLoopForPetriNet]: 49 programPoint places, 258 predicate places. [2021-03-24 15:30:12,109 INFO L480 AbstractCegarLoop]: Abstraction has has 307 places, 222 transitions, 6871 flow [2021-03-24 15:30:12,109 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 31.6) internal successors, (316), 10 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) [2021-03-24 15:30:12,109 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:30:12,109 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:30:12,109 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-03-24 15:30:12,109 INFO L428 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 15:30:12,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:30:12,110 INFO L82 PathProgramCache]: Analyzing trace with hash -939931021, now seen corresponding path program 55 times [2021-03-24 15:30:12,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:30:12,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180887326] [2021-03-24 15:30:12,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:30:12,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:30:12,123 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:30:12,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:30:12,126 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:30:12,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:30:12,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:30:12,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:30:12,133 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:30:12,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:30:12,133 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:30:12,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 15:30:12,137 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:30:12,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:30:12,137 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:30:12,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:30:12,138 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:30:12,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:30:12,142 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:30:12,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:30:12,148 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:30:12,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:30:12,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:30:12,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180887326] [2021-03-24 15:30:12,148 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:30:12,148 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 15:30:12,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309704870] [2021-03-24 15:30:12,150 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 15:30:12,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:30:12,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 15:30:12,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-03-24 15:30:12,150 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 52 [2021-03-24 15:30:12,151 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 222 transitions, 6871 flow. Second operand has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:30:12,151 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:30:12,151 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 52 [2021-03-24 15:30:12,151 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:30:12,357 INFO L129 PetriNetUnfolder]: 151/570 cut-off events. [2021-03-24 15:30:12,358 INFO L130 PetriNetUnfolder]: For 33487/33604 co-relation queries the response was YES. [2021-03-24 15:30:12,360 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6972 conditions, 570 events. 151/570 cut-off events. For 33487/33604 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3656 event pairs, 7 based on Foata normal form. 46/615 useless extension candidates. Maximal degree in co-relation 6884. Up to 147 conditions per place. [2021-03-24 15:30:12,362 INFO L132 encePairwiseOnDemand]: 40/52 looper letters, 51 selfloop transitions, 76 changer transitions 46/191 dead transitions. [2021-03-24 15:30:12,362 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 191 transitions, 6450 flow [2021-03-24 15:30:12,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 15:30:12,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 15:30:12,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 348 transitions. [2021-03-24 15:30:12,363 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7435897435897436 [2021-03-24 15:30:12,363 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 348 transitions. [2021-03-24 15:30:12,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 348 transitions. [2021-03-24 15:30:12,363 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:30:12,363 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 348 transitions. [2021-03-24 15:30:12,363 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 38.666666666666664) internal successors, (348), 9 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:30:12,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 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) [2021-03-24 15:30:12,364 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 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) [2021-03-24 15:30:12,364 INFO L185 Difference]: Start difference. First operand has 307 places, 222 transitions, 6871 flow. Second operand 9 states and 348 transitions. [2021-03-24 15:30:12,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 191 transitions, 6450 flow [2021-03-24 15:30:12,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 191 transitions, 3810 flow, removed 153 selfloop flow, removed 111 redundant places. [2021-03-24 15:30:12,415 INFO L241 Difference]: Finished difference. Result has 177 places, 126 transitions, 2452 flow [2021-03-24 15:30:12,415 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=3205, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2452, PETRI_PLACES=177, PETRI_TRANSITIONS=126} [2021-03-24 15:30:12,415 INFO L343 CegarLoopForPetriNet]: 49 programPoint places, 128 predicate places. [2021-03-24 15:30:12,415 INFO L480 AbstractCegarLoop]: Abstraction has has 177 places, 126 transitions, 2452 flow [2021-03-24 15:30:12,415 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:30:12,415 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:30:12,415 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:30:12,415 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-03-24 15:30:12,415 INFO L428 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 15:30:12,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:30:12,416 INFO L82 PathProgramCache]: Analyzing trace with hash 1948656029, now seen corresponding path program 56 times [2021-03-24 15:30:12,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:30:12,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030144043] [2021-03-24 15:30:12,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:30:12,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:30:12,427 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:30:12,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:30:12,432 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:30:12,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:30:12,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:30:12,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:30:12,439 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:30:12,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:30:12,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:30:12,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:30:12,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:30:12,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:30:12,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:30:12,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 15:30:12,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:30:12,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:30:12,448 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:30:12,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:30:12,452 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:30:12,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:30:12,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:30:12,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030144043] [2021-03-24 15:30:12,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:30:12,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 15:30:12,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534896872] [2021-03-24 15:30:12,453 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 15:30:12,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:30:12,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 15:30:12,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-03-24 15:30:12,454 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 52 [2021-03-24 15:30:12,454 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 126 transitions, 2452 flow. Second operand has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:30:12,454 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:30:12,454 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 52 [2021-03-24 15:30:12,454 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:30:12,579 INFO L129 PetriNetUnfolder]: 79/347 cut-off events. [2021-03-24 15:30:12,579 INFO L130 PetriNetUnfolder]: For 8939/8993 co-relation queries the response was YES. [2021-03-24 15:30:12,580 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2727 conditions, 347 events. 79/347 cut-off events. For 8939/8993 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1850 event pairs, 3 based on Foata normal form. 18/364 useless extension candidates. Maximal degree in co-relation 2494. Up to 85 conditions per place. [2021-03-24 15:30:12,581 INFO L132 encePairwiseOnDemand]: 40/52 looper letters, 26 selfloop transitions, 70 changer transitions 23/137 dead transitions. [2021-03-24 15:30:12,581 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 137 transitions, 2814 flow [2021-03-24 15:30:12,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 15:30:12,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 15:30:12,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 330 transitions. [2021-03-24 15:30:12,582 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7051282051282052 [2021-03-24 15:30:12,582 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 330 transitions. [2021-03-24 15:30:12,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 330 transitions. [2021-03-24 15:30:12,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:30:12,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 330 transitions. [2021-03-24 15:30:12,582 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 36.666666666666664) internal successors, (330), 9 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:30:12,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 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) [2021-03-24 15:30:12,583 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 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) [2021-03-24 15:30:12,583 INFO L185 Difference]: Start difference. First operand has 177 places, 126 transitions, 2452 flow. Second operand 9 states and 330 transitions. [2021-03-24 15:30:12,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 137 transitions, 2814 flow [2021-03-24 15:30:12,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 137 transitions, 2368 flow, removed 38 selfloop flow, removed 30 redundant places. [2021-03-24 15:30:12,597 INFO L241 Difference]: Finished difference. Result has 149 places, 101 transitions, 1702 flow [2021-03-24 15:30:12,597 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=2014, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1702, PETRI_PLACES=149, PETRI_TRANSITIONS=101} [2021-03-24 15:30:12,597 INFO L343 CegarLoopForPetriNet]: 49 programPoint places, 100 predicate places. [2021-03-24 15:30:12,598 INFO L480 AbstractCegarLoop]: Abstraction has has 149 places, 101 transitions, 1702 flow [2021-03-24 15:30:12,598 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:30:12,598 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:30:12,598 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:30:12,598 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-03-24 15:30:12,598 INFO L428 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 15:30:12,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:30:12,598 INFO L82 PathProgramCache]: Analyzing trace with hash 1423687151, now seen corresponding path program 57 times [2021-03-24 15:30:12,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:30:12,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299402406] [2021-03-24 15:30:12,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:30:12,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:30:12,612 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:30:12,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:30:12,614 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:30:12,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:30:12,617 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:30:12,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:30:12,621 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:30:12,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:30:12,625 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:30:12,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:30:12,630 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:30:12,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:30:12,635 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:30:12,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:30:12,641 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:30:12,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:30:12,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:30:12,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:30:12,655 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:30:12,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:30:12,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:30:12,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299402406] [2021-03-24 15:30:12,656 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:30:12,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-24 15:30:12,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148321472] [2021-03-24 15:30:12,656 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-24 15:30:12,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:30:12,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-24 15:30:12,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-03-24 15:30:12,657 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 52 [2021-03-24 15:30:12,657 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 101 transitions, 1702 flow. Second operand has 11 states, 11 states have (on average 31.454545454545453) internal successors, (346), 11 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) [2021-03-24 15:30:12,657 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:30:12,657 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 52 [2021-03-24 15:30:12,657 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:30:12,825 INFO L129 PetriNetUnfolder]: 66/285 cut-off events. [2021-03-24 15:30:12,826 INFO L130 PetriNetUnfolder]: For 5846/5892 co-relation queries the response was YES. [2021-03-24 15:30:12,826 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2014 conditions, 285 events. 66/285 cut-off events. For 5846/5892 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1379 event pairs, 25 based on Foata normal form. 6/290 useless extension candidates. Maximal degree in co-relation 1840. Up to 125 conditions per place. [2021-03-24 15:30:12,827 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 44 selfloop transitions, 7 changer transitions 50/119 dead transitions. [2021-03-24 15:30:12,827 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 119 transitions, 2028 flow [2021-03-24 15:30:12,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-24 15:30:12,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-24 15:30:12,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 392 transitions. [2021-03-24 15:30:12,828 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6853146853146853 [2021-03-24 15:30:12,828 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 392 transitions. [2021-03-24 15:30:12,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 392 transitions. [2021-03-24 15:30:12,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:30:12,828 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 392 transitions. [2021-03-24 15:30:12,829 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 35.63636363636363) internal successors, (392), 11 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:30:12,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 52.0) internal successors, (624), 12 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:30:12,830 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 52.0) internal successors, (624), 12 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:30:12,830 INFO L185 Difference]: Start difference. First operand has 149 places, 101 transitions, 1702 flow. Second operand 11 states and 392 transitions. [2021-03-24 15:30:12,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 119 transitions, 2028 flow [2021-03-24 15:30:12,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 119 transitions, 1496 flow, removed 3 selfloop flow, removed 35 redundant places. [2021-03-24 15:30:12,838 INFO L241 Difference]: Finished difference. Result has 124 places, 66 transitions, 644 flow [2021-03-24 15:30:12,839 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1144, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=644, PETRI_PLACES=124, PETRI_TRANSITIONS=66} [2021-03-24 15:30:12,839 INFO L343 CegarLoopForPetriNet]: 49 programPoint places, 75 predicate places. [2021-03-24 15:30:12,839 INFO L480 AbstractCegarLoop]: Abstraction has has 124 places, 66 transitions, 644 flow [2021-03-24 15:30:12,839 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 31.454545454545453) internal successors, (346), 11 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) [2021-03-24 15:30:12,839 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:30:12,839 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:30:12,839 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-03-24 15:30:12,839 INFO L428 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 15:30:12,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:30:12,839 INFO L82 PathProgramCache]: Analyzing trace with hash 866629319, now seen corresponding path program 58 times [2021-03-24 15:30:12,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:30:12,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81242781] [2021-03-24 15:30:12,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:30:12,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:30:12,848 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:30:12,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:30:12,853 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:30:12,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:30:12,857 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:30:12,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 15:30:12,860 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:30:12,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:30:12,861 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:30:12,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:30:12,864 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:30:12,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:30:12,869 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:30:12,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:30:12,873 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:30:12,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:30:12,878 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:30:12,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:30:12,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:30:12,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:30:12,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:30:12,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81242781] [2021-03-24 15:30:12,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:30:12,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-24 15:30:12,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136368159] [2021-03-24 15:30:12,886 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 15:30:12,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:30:12,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 15:30:12,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-03-24 15:30:12,886 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 52 [2021-03-24 15:30:12,886 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 66 transitions, 644 flow. Second operand has 10 states, 10 states have (on average 31.6) internal successors, (316), 10 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) [2021-03-24 15:30:12,887 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:30:12,887 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 52 [2021-03-24 15:30:12,887 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:30:13,020 INFO L129 PetriNetUnfolder]: 31/133 cut-off events. [2021-03-24 15:30:13,020 INFO L130 PetriNetUnfolder]: For 845/847 co-relation queries the response was YES. [2021-03-24 15:30:13,020 INFO L84 FinitePrefix]: Finished finitePrefix Result has 780 conditions, 133 events. 31/133 cut-off events. For 845/847 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 527 event pairs, 0 based on Foata normal form. 5/138 useless extension candidates. Maximal degree in co-relation 752. Up to 27 conditions per place. [2021-03-24 15:30:13,021 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 0 selfloop transitions, 0 changer transitions 66/66 dead transitions. [2021-03-24 15:30:13,021 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 66 transitions, 771 flow [2021-03-24 15:30:13,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-03-24 15:30:13,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-03-24 15:30:13,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 410 transitions. [2021-03-24 15:30:13,022 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.657051282051282 [2021-03-24 15:30:13,022 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 410 transitions. [2021-03-24 15:30:13,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 410 transitions. [2021-03-24 15:30:13,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:30:13,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 410 transitions. [2021-03-24 15:30:13,022 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 34.166666666666664) internal successors, (410), 12 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:30:13,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 52.0) internal successors, (676), 13 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:30:13,023 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 52.0) internal successors, (676), 13 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:30:13,023 INFO L185 Difference]: Start difference. First operand has 124 places, 66 transitions, 644 flow. Second operand 12 states and 410 transitions. [2021-03-24 15:30:13,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 66 transitions, 771 flow [2021-03-24 15:30:13,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 66 transitions, 511 flow, removed 35 selfloop flow, removed 25 redundant places. [2021-03-24 15:30:13,026 INFO L241 Difference]: Finished difference. Result has 65 places, 0 transitions, 0 flow [2021-03-24 15:30:13,026 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=54, 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=12, PETRI_FLOW=0, PETRI_PLACES=65, PETRI_TRANSITIONS=0} [2021-03-24 15:30:13,026 INFO L343 CegarLoopForPetriNet]: 49 programPoint places, 16 predicate places. [2021-03-24 15:30:13,026 INFO L480 AbstractCegarLoop]: Abstraction has has 65 places, 0 transitions, 0 flow [2021-03-24 15:30:13,027 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 31.6) internal successors, (316), 10 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) [2021-03-24 15:30:13,027 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-03-24 15:30:13,030 INFO L202 PluginConnector]: Adding new model ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.03 03:30:13 BasicIcfg [2021-03-24 15:30:13,030 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-24 15:30:13,031 INFO L168 Benchmark]: Toolchain (without parser) took 326256.40 ms. Allocated memory was 255.9 MB in the beginning and 15.0 GB in the end (delta: 14.8 GB). Free memory was 236.5 MB in the beginning and 9.7 GB in the end (delta: -9.4 GB). Peak memory consumption was 5.3 GB. Max. memory is 16.0 GB. [2021-03-24 15:30:13,031 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 255.9 MB. Free memory was 237.7 MB in the beginning and 237.6 MB in the end (delta: 89.3 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 15:30:13,031 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.57 ms. Allocated memory is still 255.9 MB. Free memory was 236.5 MB in the beginning and 235.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 15:30:13,031 INFO L168 Benchmark]: Boogie Preprocessor took 20.84 ms. Allocated memory is still 255.9 MB. Free memory was 235.0 MB in the beginning and 234.0 MB in the end (delta: 924.0 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 15:30:13,031 INFO L168 Benchmark]: RCFGBuilder took 306.23 ms. Allocated memory is still 255.9 MB. Free memory was 233.9 MB in the beginning and 232.9 MB in the end (delta: 1.0 MB). Peak memory consumption was 18.3 MB. Max. memory is 16.0 GB. [2021-03-24 15:30:13,031 INFO L168 Benchmark]: TraceAbstraction took 325902.57 ms. Allocated memory was 255.9 MB in the beginning and 15.0 GB in the end (delta: 14.8 GB). Free memory was 232.9 MB in the beginning and 9.7 GB in the end (delta: -9.4 GB). Peak memory consumption was 5.3 GB. Max. memory is 16.0 GB. [2021-03-24 15:30:13,031 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 0.12 ms. Allocated memory is still 255.9 MB. Free memory was 237.7 MB in the beginning and 237.6 MB in the end (delta: 89.3 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 21.57 ms. Allocated memory is still 255.9 MB. Free memory was 236.5 MB in the beginning and 235.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 20.84 ms. Allocated memory is still 255.9 MB. Free memory was 235.0 MB in the beginning and 234.0 MB in the end (delta: 924.0 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 306.23 ms. Allocated memory is still 255.9 MB. Free memory was 233.9 MB in the beginning and 232.9 MB in the end (delta: 1.0 MB). Peak memory consumption was 18.3 MB. Max. memory is 16.0 GB. * TraceAbstraction took 325902.57 ms. Allocated memory was 255.9 MB in the beginning and 15.0 GB in the end (delta: 14.8 GB). Free memory was 232.9 MB in the beginning and 9.7 GB in the end (delta: -9.4 GB). Peak memory consumption was 5.3 GB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 139.4ms, 55 PlacesBefore, 49 PlacesAfterwards, 39 TransitionsBefore, 33 TransitionsAfterwards, 748 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 5 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 6 TotalNumberOfCompositions, 1556 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 380, positive: 317, positive conditional: 0, positive unconditional: 317, negative: 63, negative conditional: 0, negative unconditional: 63, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 204, positive: 178, positive conditional: 0, positive unconditional: 178, negative: 26, negative conditional: 0, negative unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 204, positive: 178, positive conditional: 0, positive unconditional: 178, negative: 26, negative conditional: 0, negative unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 380, positive: 139, positive conditional: 0, positive unconditional: 139, negative: 37, negative conditional: 0, negative unconditional: 37, unknown: 204, unknown conditional: 0, unknown unconditional: 204] , Statistics on independence cache: Total cache size (in pairs): 79, Positive cache size: 62, Positive conditional cache size: 0, Positive unconditional cache size: 62, Negative cache size: 17, Negative conditional cache size: 0, Negative unconditional cache size: 17 - PositiveResult [Line: 95]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 47 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 21.9ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 325789.1ms, OverallIterations: 58, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 322356.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 208.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 107 SDtfs, 1489 SDslu, 9 SDs, 0 SdLazy, 16390 SolverSat, 2525 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6807.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 721 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 556 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 741 ImplicationChecksByTransitivity, 2627.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=66652occurred in iteration=48, InterpolantAutomatonStates: 557, 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: 56.2ms SsaConstructionTime, 272.2ms SatisfiabilityAnalysisTime, 2565.6ms InterpolantComputationTime, 1914 NumberOfCodeBlocks, 1914 NumberOfCodeBlocksAsserted, 58 NumberOfCheckSat, 1856 ConstructedInterpolants, 0 QuantifiedInterpolants, 5748 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 58 InterpolantComputations, 58 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...