/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/mcr/example_7.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 04:48:47,844 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 04:48:47,846 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 04:48:47,875 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 04:48:47,875 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 04:48:47,877 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 04:48:47,879 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 04:48:47,883 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 04:48:47,884 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 04:48:47,891 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 04:48:47,892 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 04:48:47,893 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 04:48:47,893 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 04:48:47,894 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 04:48:47,895 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 04:48:47,896 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 04:48:47,898 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 04:48:47,898 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 04:48:47,900 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 04:48:47,906 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 04:48:47,907 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 04:48:47,908 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 04:48:47,908 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 04:48:47,910 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 04:48:47,915 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-11 04:48:47,915 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-11 04:48:47,915 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-11 04:48:47,917 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-11 04:48:47,917 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-11 04:48:47,917 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-11 04:48:47,917 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-11 04:48:47,918 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-11 04:48:47,919 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-11 04:48:47,919 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-11 04:48:47,920 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-11 04:48:47,920 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-11 04:48:47,920 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-11 04:48:47,920 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-11 04:48:47,921 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 04:48:47,921 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 04:48:47,921 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 04:48:47,922 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2021-03-11 04:48:47,948 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 04:48:47,948 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 04:48:47,949 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 04:48:47,949 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 04:48:47,949 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 04:48:47,950 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 04:48:47,950 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 04:48:47,950 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 04:48:47,950 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 04:48:47,950 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 04:48:47,950 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 04:48:47,950 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 04:48:47,950 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 04:48:47,950 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 04:48:47,950 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 04:48:47,950 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 04:48:47,950 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 04:48:47,951 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 04:48:47,951 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 04:48:47,951 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 04:48:47,951 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 04:48:47,951 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 04:48:47,951 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 04:48:47,951 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 04:48:47,951 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 04:48:47,951 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 04:48:47,951 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 04:48:47,951 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-03-11 04:48:47,952 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-11 04:48:47,952 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 04:48:48,171 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 04:48:48,188 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 04:48:48,190 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 04:48:48,190 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-11 04:48:48,191 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-11 04:48:48,192 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_7.bpl [2021-03-11 04:48:48,192 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_7.bpl' [2021-03-11 04:48:48,219 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 04:48:48,223 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-11 04:48:48,224 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 04:48:48,224 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 04:48:48,224 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 04:48:48,235 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 04:48:48" (1/1) ... [2021-03-11 04:48:48,239 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 04:48:48" (1/1) ... [2021-03-11 04:48:48,244 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 04:48:48,245 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 04:48:48,245 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 04:48:48,246 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 04:48:48,251 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 04:48:48" (1/1) ... [2021-03-11 04:48:48,251 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 04:48:48" (1/1) ... [2021-03-11 04:48:48,252 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 04:48:48" (1/1) ... [2021-03-11 04:48:48,252 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 04:48:48" (1/1) ... [2021-03-11 04:48:48,255 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 04:48:48" (1/1) ... [2021-03-11 04:48:48,255 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 04:48:48" (1/1) ... [2021-03-11 04:48:48,256 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 04:48:48" (1/1) ... [2021-03-11 04:48:48,257 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 04:48:48,258 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 04:48:48,258 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 04:48:48,258 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 04:48:48,259 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 04:48:48" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 04:48:48,310 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2021-03-11 04:48:48,311 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2021-03-11 04:48:48,311 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2021-03-11 04:48:48,311 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2021-03-11 04:48:48,311 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2021-03-11 04:48:48,311 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2021-03-11 04:48:48,311 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2021-03-11 04:48:48,311 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2021-03-11 04:48:48,311 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2021-03-11 04:48:48,311 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2021-03-11 04:48:48,312 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2021-03-11 04:48:48,312 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2021-03-11 04:48:48,312 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2021-03-11 04:48:48,312 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2021-03-11 04:48:48,312 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2021-03-11 04:48:48,312 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-11 04:48:48,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 04:48:48,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 04:48:48,312 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_5 given in one single declaration [2021-03-11 04:48:48,312 INFO L130 BoogieDeclarations]: Found specification of procedure set_5 [2021-03-11 04:48:48,313 INFO L138 BoogieDeclarations]: Found implementation of procedure set_5 [2021-03-11 04:48:48,313 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_6 given in one single declaration [2021-03-11 04:48:48,313 INFO L130 BoogieDeclarations]: Found specification of procedure set_6 [2021-03-11 04:48:48,313 INFO L138 BoogieDeclarations]: Found implementation of procedure set_6 [2021-03-11 04:48:48,313 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 04:48:48,428 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 04:48:48,428 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-11 04:48:48,429 INFO L202 PluginConnector]: Adding new model example_7.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 04:48:48 BoogieIcfgContainer [2021-03-11 04:48:48,429 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 04:48:48,430 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 04:48:48,430 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 04:48:48,432 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 04:48:48,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 04:48:48" (1/2) ... [2021-03-11 04:48:48,433 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@605bd335 and model type example_7.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 04:48:48, skipping insertion in model container [2021-03-11 04:48:48,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_7.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 04:48:48" (2/2) ... [2021-03-11 04:48:48,434 INFO L111 eAbstractionObserver]: Analyzing ICFG example_7.bpl [2021-03-11 04:48:48,437 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 04:48:48,452 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 04:48:48,453 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 04:48:48,569 INFO L149 ThreadInstanceAdder]: Constructed 49 joinOtherThreadTransitions. [2021-03-11 04:48:48,580 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-03-11 04:48:48,598 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 04:48:48,598 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-11 04:48:48,598 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 04:48:48,598 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 04:48:48,598 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 04:48:48,598 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 04:48:48,598 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 04:48:48,598 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 04:48:48,609 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 60 places, 80 transitions, 342 flow [2021-03-11 04:48:48,723 INFO L129 PetriNetUnfolder]: 321/472 cut-off events. [2021-03-11 04:48:48,723 INFO L130 PetriNetUnfolder]: For 448/448 co-relation queries the response was YES. [2021-03-11 04:48:48,729 INFO L84 FinitePrefix]: Finished finitePrefix Result has 942 conditions, 472 events. 321/472 cut-off events. For 448/448 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1541 event pairs, 0 based on Foata normal form. 0/471 useless extension candidates. Maximal degree in co-relation 416. Up to 140 conditions per place. [2021-03-11 04:48:48,729 INFO L82 GeneralOperation]: Start removeDead. Operand has 60 places, 80 transitions, 342 flow [2021-03-11 04:48:48,739 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 71 transitions, 310 flow [2021-03-11 04:48:48,784 INFO L129 PetriNetUnfolder]: 321/469 cut-off events. [2021-03-11 04:48:48,784 INFO L130 PetriNetUnfolder]: For 448/448 co-relation queries the response was YES. [2021-03-11 04:48:48,785 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:48:48,785 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:48:48,785 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:48:48,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:48:48,790 INFO L82 PathProgramCache]: Analyzing trace with hash -2083937691, now seen corresponding path program 1 times [2021-03-11 04:48:48,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:48:48,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062744301] [2021-03-11 04:48:48,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:48:48,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:48:48,912 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:48:48,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:48:48,921 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:48:48,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 04:48:48,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:48:48,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:48:48,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:48:48,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062744301] [2021-03-11 04:48:48,934 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:48:48,934 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 04:48:48,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641914973] [2021-03-11 04:48:48,940 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 04:48:48,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:48:48,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 04:48:48,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 04:48:48,953 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 80 [2021-03-11 04:48:48,956 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 71 transitions, 310 flow. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:48:48,957 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:48:48,957 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 80 [2021-03-11 04:48:48,958 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:48:49,001 INFO L129 PetriNetUnfolder]: 135/227 cut-off events. [2021-03-11 04:48:49,002 INFO L130 PetriNetUnfolder]: For 391/391 co-relation queries the response was YES. [2021-03-11 04:48:49,003 INFO L84 FinitePrefix]: Finished finitePrefix Result has 463 conditions, 227 events. 135/227 cut-off events. For 391/391 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 767 event pairs, 0 based on Foata normal form. 57/284 useless extension candidates. Maximal degree in co-relation 401. Up to 60 conditions per place. [2021-03-11 04:48:49,005 INFO L132 encePairwiseOnDemand]: 74/80 looper letters, 2 selfloop transitions, 1 changer transitions 0/66 dead transitions. [2021-03-11 04:48:49,005 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 66 transitions, 291 flow [2021-03-11 04:48:49,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 04:48:49,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 04:48:49,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 224 transitions. [2021-03-11 04:48:49,016 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9333333333333333 [2021-03-11 04:48:49,016 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 224 transitions. [2021-03-11 04:48:49,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 224 transitions. [2021-03-11 04:48:49,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:48:49,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 224 transitions. [2021-03-11 04:48:49,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:48:49,029 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:48:49,029 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:48:49,030 INFO L185 Difference]: Start difference. First operand has 51 places, 71 transitions, 310 flow. Second operand 3 states and 224 transitions. [2021-03-11 04:48:49,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 66 transitions, 291 flow [2021-03-11 04:48:49,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 66 transitions, 189 flow, removed 0 selfloop flow, removed 14 redundant places. [2021-03-11 04:48:49,041 INFO L241 Difference]: Finished difference. Result has 39 places, 66 transitions, 185 flow [2021-03-11 04:48:49,042 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=185, PETRI_PLACES=39, PETRI_TRANSITIONS=66} [2021-03-11 04:48:49,042 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, -12 predicate places. [2021-03-11 04:48:49,043 INFO L480 AbstractCegarLoop]: Abstraction has has 39 places, 66 transitions, 185 flow [2021-03-11 04:48:49,043 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:48:49,043 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:48:49,043 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:48:49,043 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 04:48:49,043 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:48:49,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:48:49,044 INFO L82 PathProgramCache]: Analyzing trace with hash 1355406023, now seen corresponding path program 1 times [2021-03-11 04:48:49,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:48:49,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464156536] [2021-03-11 04:48:49,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:48:49,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:48:49,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:48:49,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:48:49,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:48:49,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 04:48:49,093 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:48:49,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:48:49,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:48:49,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464156536] [2021-03-11 04:48:49,094 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:48:49,094 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 04:48:49,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799212881] [2021-03-11 04:48:49,095 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 04:48:49,095 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:48:49,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 04:48:49,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 04:48:49,096 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 80 [2021-03-11 04:48:49,097 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 66 transitions, 185 flow. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:48:49,097 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:48:49,097 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 80 [2021-03-11 04:48:49,097 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:48:49,117 INFO L129 PetriNetUnfolder]: 130/221 cut-off events. [2021-03-11 04:48:49,117 INFO L130 PetriNetUnfolder]: For 33/33 co-relation queries the response was YES. [2021-03-11 04:48:49,117 INFO L84 FinitePrefix]: Finished finitePrefix Result has 265 conditions, 221 events. 130/221 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 716 event pairs, 0 based on Foata normal form. 1/222 useless extension candidates. Maximal degree in co-relation 248. Up to 60 conditions per place. [2021-03-11 04:48:49,118 INFO L132 encePairwiseOnDemand]: 78/80 looper letters, 6 selfloop transitions, 1 changer transitions 0/65 dead transitions. [2021-03-11 04:48:49,119 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 65 transitions, 196 flow [2021-03-11 04:48:49,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 04:48:49,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 04:48:49,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 224 transitions. [2021-03-11 04:48:49,120 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9333333333333333 [2021-03-11 04:48:49,120 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 224 transitions. [2021-03-11 04:48:49,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 224 transitions. [2021-03-11 04:48:49,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:48:49,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 224 transitions. [2021-03-11 04:48:49,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:48:49,122 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:48:49,122 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:48:49,122 INFO L185 Difference]: Start difference. First operand has 39 places, 66 transitions, 185 flow. Second operand 3 states and 224 transitions. [2021-03-11 04:48:49,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 65 transitions, 196 flow [2021-03-11 04:48:49,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 65 transitions, 195 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 04:48:49,124 INFO L241 Difference]: Finished difference. Result has 40 places, 65 transitions, 183 flow [2021-03-11 04:48:49,124 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=183, PETRI_PLACES=40, PETRI_TRANSITIONS=65} [2021-03-11 04:48:49,124 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, -11 predicate places. [2021-03-11 04:48:49,125 INFO L480 AbstractCegarLoop]: Abstraction has has 40 places, 65 transitions, 183 flow [2021-03-11 04:48:49,125 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:48:49,125 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:48:49,125 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:48:49,125 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 04:48:49,125 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:48:49,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:48:49,125 INFO L82 PathProgramCache]: Analyzing trace with hash -1622642711, now seen corresponding path program 1 times [2021-03-11 04:48:49,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:48:49,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709191008] [2021-03-11 04:48:49,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:48:49,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:48:49,139 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:48:49,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:48:49,140 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:48:49,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 04:48:49,143 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:48:49,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:48:49,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:48:49,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709191008] [2021-03-11 04:48:49,144 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:48:49,144 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 04:48:49,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563401832] [2021-03-11 04:48:49,144 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 04:48:49,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:48:49,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 04:48:49,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 04:48:49,145 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 80 [2021-03-11 04:48:49,145 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 65 transitions, 183 flow. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:48:49,146 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:48:49,146 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 80 [2021-03-11 04:48:49,146 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:48:49,170 INFO L129 PetriNetUnfolder]: 106/191 cut-off events. [2021-03-11 04:48:49,170 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2021-03-11 04:48:49,171 INFO L84 FinitePrefix]: Finished finitePrefix Result has 231 conditions, 191 events. 106/191 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 622 event pairs, 0 based on Foata normal form. 5/196 useless extension candidates. Maximal degree in co-relation 223. Up to 60 conditions per place. [2021-03-11 04:48:49,172 INFO L132 encePairwiseOnDemand]: 77/80 looper letters, 5 selfloop transitions, 1 changer transitions 0/63 dead transitions. [2021-03-11 04:48:49,172 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 63 transitions, 189 flow [2021-03-11 04:48:49,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 04:48:49,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 04:48:49,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 224 transitions. [2021-03-11 04:48:49,176 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9333333333333333 [2021-03-11 04:48:49,176 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 224 transitions. [2021-03-11 04:48:49,176 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 224 transitions. [2021-03-11 04:48:49,176 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:48:49,176 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 224 transitions. [2021-03-11 04:48:49,177 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:48:49,179 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:48:49,179 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:48:49,179 INFO L185 Difference]: Start difference. First operand has 40 places, 65 transitions, 183 flow. Second operand 3 states and 224 transitions. [2021-03-11 04:48:49,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 63 transitions, 189 flow [2021-03-11 04:48:49,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 63 transitions, 188 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 04:48:49,182 INFO L241 Difference]: Finished difference. Result has 41 places, 63 transitions, 178 flow [2021-03-11 04:48:49,182 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=178, PETRI_PLACES=41, PETRI_TRANSITIONS=63} [2021-03-11 04:48:49,182 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, -10 predicate places. [2021-03-11 04:48:49,183 INFO L480 AbstractCegarLoop]: Abstraction has has 41 places, 63 transitions, 178 flow [2021-03-11 04:48:49,183 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:48:49,183 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:48:49,184 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:48:49,184 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 04:48:49,184 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:48:49,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:48:49,184 INFO L82 PathProgramCache]: Analyzing trace with hash 751708351, now seen corresponding path program 1 times [2021-03-11 04:48:49,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:48:49,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007022894] [2021-03-11 04:48:49,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:48:49,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:48:49,204 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:48:49,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:48:49,205 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:48:49,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 04:48:49,209 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:48:49,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:48:49,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:48:49,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007022894] [2021-03-11 04:48:49,210 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:48:49,210 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 04:48:49,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224725457] [2021-03-11 04:48:49,210 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 04:48:49,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:48:49,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 04:48:49,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 04:48:49,211 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 80 [2021-03-11 04:48:49,211 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 63 transitions, 178 flow. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:48:49,211 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:48:49,211 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 80 [2021-03-11 04:48:49,212 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:48:49,231 INFO L129 PetriNetUnfolder]: 61/131 cut-off events. [2021-03-11 04:48:49,232 INFO L130 PetriNetUnfolder]: For 27/27 co-relation queries the response was YES. [2021-03-11 04:48:49,232 INFO L84 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 131 events. 61/131 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 386 event pairs, 0 based on Foata normal form. 10/141 useless extension candidates. Maximal degree in co-relation 154. Up to 30 conditions per place. [2021-03-11 04:48:49,233 INFO L132 encePairwiseOnDemand]: 76/80 looper letters, 4 selfloop transitions, 1 changer transitions 0/60 dead transitions. [2021-03-11 04:48:49,233 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 60 transitions, 179 flow [2021-03-11 04:48:49,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 04:48:49,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 04:48:49,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 224 transitions. [2021-03-11 04:48:49,235 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9333333333333333 [2021-03-11 04:48:49,235 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 224 transitions. [2021-03-11 04:48:49,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 224 transitions. [2021-03-11 04:48:49,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:48:49,236 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 224 transitions. [2021-03-11 04:48:49,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:48:49,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:48:49,238 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:48:49,238 INFO L185 Difference]: Start difference. First operand has 41 places, 63 transitions, 178 flow. Second operand 3 states and 224 transitions. [2021-03-11 04:48:49,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 60 transitions, 179 flow [2021-03-11 04:48:49,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 60 transitions, 178 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 04:48:49,240 INFO L241 Difference]: Finished difference. Result has 42 places, 60 transitions, 170 flow [2021-03-11 04:48:49,240 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=170, PETRI_PLACES=42, PETRI_TRANSITIONS=60} [2021-03-11 04:48:49,240 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, -9 predicate places. [2021-03-11 04:48:49,240 INFO L480 AbstractCegarLoop]: Abstraction has has 42 places, 60 transitions, 170 flow [2021-03-11 04:48:49,241 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:48:49,241 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:48:49,241 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:48:49,241 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 04:48:49,241 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:48:49,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:48:49,242 INFO L82 PathProgramCache]: Analyzing trace with hash -92000961, now seen corresponding path program 1 times [2021-03-11 04:48:49,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:48:49,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220552743] [2021-03-11 04:48:49,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:48:49,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:48:49,275 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:48:49,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:48:49,278 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:48:49,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 04:48:49,282 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:48:49,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:48:49,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:48:49,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220552743] [2021-03-11 04:48:49,283 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:48:49,283 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 04:48:49,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285057722] [2021-03-11 04:48:49,284 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 04:48:49,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:48:49,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 04:48:49,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 04:48:49,285 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 80 [2021-03-11 04:48:49,285 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 60 transitions, 170 flow. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:48:49,285 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:48:49,285 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 80 [2021-03-11 04:48:49,285 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:48:49,297 INFO L129 PetriNetUnfolder]: 10/49 cut-off events. [2021-03-11 04:48:49,297 INFO L130 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2021-03-11 04:48:49,297 INFO L84 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 49 events. 10/49 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 90 event pairs, 0 based on Foata normal form. 16/65 useless extension candidates. Maximal degree in co-relation 57. Up to 8 conditions per place. [2021-03-11 04:48:49,298 INFO L132 encePairwiseOnDemand]: 73/80 looper letters, 1 selfloop transitions, 1 changer transitions 0/43 dead transitions. [2021-03-11 04:48:49,298 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 43 transitions, 123 flow [2021-03-11 04:48:49,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 04:48:49,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 04:48:49,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 224 transitions. [2021-03-11 04:48:49,299 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9333333333333333 [2021-03-11 04:48:49,299 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 224 transitions. [2021-03-11 04:48:49,299 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 224 transitions. [2021-03-11 04:48:49,299 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:48:49,299 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 224 transitions. [2021-03-11 04:48:49,300 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:48:49,300 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:48:49,300 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:48:49,301 INFO L185 Difference]: Start difference. First operand has 42 places, 60 transitions, 170 flow. Second operand 3 states and 224 transitions. [2021-03-11 04:48:49,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 43 transitions, 123 flow [2021-03-11 04:48:49,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 43 transitions, 122 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 04:48:49,303 INFO L241 Difference]: Finished difference. Result has 43 places, 43 transitions, 120 flow [2021-03-11 04:48:49,304 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=43, PETRI_TRANSITIONS=43} [2021-03-11 04:48:49,304 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, -8 predicate places. [2021-03-11 04:48:49,304 INFO L480 AbstractCegarLoop]: Abstraction has has 43 places, 43 transitions, 120 flow [2021-03-11 04:48:49,304 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:48:49,304 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:48:49,304 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:48:49,304 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-11 04:48:49,304 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:48:49,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:48:49,305 INFO L82 PathProgramCache]: Analyzing trace with hash -1321056479, now seen corresponding path program 1 times [2021-03-11 04:48:49,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:48:49,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581455643] [2021-03-11 04:48:49,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:48:49,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:48:49,325 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:48:49,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:48:49,326 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:48:49,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 04:48:49,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:48:49,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:48:49,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:48:49,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581455643] [2021-03-11 04:48:49,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:48:49,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 04:48:49,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705506117] [2021-03-11 04:48:49,331 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 04:48:49,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:48:49,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 04:48:49,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 04:48:49,331 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 80 [2021-03-11 04:48:49,332 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 43 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:48:49,332 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:48:49,332 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 80 [2021-03-11 04:48:49,332 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:48:49,343 INFO L129 PetriNetUnfolder]: 0/29 cut-off events. [2021-03-11 04:48:49,343 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2021-03-11 04:48:49,343 INFO L84 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 29 events. 0/29 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 34 event pairs, 0 based on Foata normal form. 4/33 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-11 04:48:49,343 INFO L132 encePairwiseOnDemand]: 75/80 looper letters, 1 selfloop transitions, 1 changer transitions 0/29 dead transitions. [2021-03-11 04:48:49,343 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 29 transitions, 82 flow [2021-03-11 04:48:49,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 04:48:49,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 04:48:49,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 222 transitions. [2021-03-11 04:48:49,345 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.925 [2021-03-11 04:48:49,345 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 222 transitions. [2021-03-11 04:48:49,345 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 222 transitions. [2021-03-11 04:48:49,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:48:49,345 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 222 transitions. [2021-03-11 04:48:49,345 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:48:49,346 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:48:49,346 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:48:49,346 INFO L185 Difference]: Start difference. First operand has 43 places, 43 transitions, 120 flow. Second operand 3 states and 222 transitions. [2021-03-11 04:48:49,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 29 transitions, 82 flow [2021-03-11 04:48:49,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 29 transitions, 81 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 04:48:49,348 INFO L241 Difference]: Finished difference. Result has 44 places, 29 transitions, 79 flow [2021-03-11 04:48:49,348 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=79, PETRI_PLACES=44, PETRI_TRANSITIONS=29} [2021-03-11 04:48:49,348 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, -7 predicate places. [2021-03-11 04:48:49,348 INFO L480 AbstractCegarLoop]: Abstraction has has 44 places, 29 transitions, 79 flow [2021-03-11 04:48:49,349 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:48:49,349 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:48:49,349 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:48:49,349 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-11 04:48:49,349 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:48:49,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:48:49,349 INFO L82 PathProgramCache]: Analyzing trace with hash 1061433261, now seen corresponding path program 1 times [2021-03-11 04:48:49,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:48:49,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96077872] [2021-03-11 04:48:49,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:48:49,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:48:49,404 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:48:49,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:48:49,409 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:48:49,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:48:49,416 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 04:48:49,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 04:48:49,427 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 04:48:49,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 04:48:49,442 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 04:48:49,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 04:48:49,461 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 04:48:49,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 04:48:49,490 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 04:48:49,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 04:48:49,519 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:48:49,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:48:49,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:48:49,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96077872] [2021-03-11 04:48:49,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:48:49,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:48:49,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806777116] [2021-03-11 04:48:49,545 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:48:49,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:48:49,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:48:49,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:48:49,546 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:48:49,547 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 29 transitions, 79 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:48:49,547 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:48:49,547 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:48:49,547 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:48:49,676 INFO L129 PetriNetUnfolder]: 387/837 cut-off events. [2021-03-11 04:48:49,676 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 04:48:49,678 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1436 conditions, 837 events. 387/837 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 5147 event pairs, 129 based on Foata normal form. 1/790 useless extension candidates. Maximal degree in co-relation 1428. Up to 225 conditions per place. [2021-03-11 04:48:49,681 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 27 selfloop transitions, 6 changer transitions 1/55 dead transitions. [2021-03-11 04:48:49,682 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 55 transitions, 199 flow [2021-03-11 04:48:49,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 04:48:49,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 04:48:49,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 04:48:49,683 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 04:48:49,683 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 04:48:49,683 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 04:48:49,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:48:49,684 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 04:48:49,685 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:48:49,686 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:48:49,686 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:48:49,686 INFO L185 Difference]: Start difference. First operand has 44 places, 29 transitions, 79 flow. Second operand 9 states and 674 transitions. [2021-03-11 04:48:49,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 55 transitions, 199 flow [2021-03-11 04:48:49,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 55 transitions, 198 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 04:48:49,688 INFO L241 Difference]: Finished difference. Result has 58 places, 34 transitions, 125 flow [2021-03-11 04:48:49,688 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=125, PETRI_PLACES=58, PETRI_TRANSITIONS=34} [2021-03-11 04:48:49,688 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 7 predicate places. [2021-03-11 04:48:49,688 INFO L480 AbstractCegarLoop]: Abstraction has has 58 places, 34 transitions, 125 flow [2021-03-11 04:48:49,688 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:48:49,688 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:48:49,689 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:48:49,689 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-11 04:48:49,689 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:48:49,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:48:49,689 INFO L82 PathProgramCache]: Analyzing trace with hash 1732224459, now seen corresponding path program 2 times [2021-03-11 04:48:49,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:48:49,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25526574] [2021-03-11 04:48:49,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:48:49,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:48:49,739 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:48:49,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:48:49,740 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:48:49,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:48:49,745 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:48:49,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 04:48:49,756 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 04:48:49,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 04:48:49,774 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 04:48:49,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 04:48:49,796 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 04:48:49,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 04:48:49,822 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 04:48:49,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 04:48:49,857 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:48:49,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:48:49,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:48:49,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25526574] [2021-03-11 04:48:49,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:48:49,882 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:48:49,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150160069] [2021-03-11 04:48:49,883 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:48:49,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:48:49,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:48:49,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:48:49,884 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:48:49,885 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 34 transitions, 125 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:48:49,885 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:48:49,885 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:48:49,885 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:48:50,062 INFO L129 PetriNetUnfolder]: 470/1424 cut-off events. [2021-03-11 04:48:50,063 INFO L130 PetriNetUnfolder]: For 990/1011 co-relation queries the response was YES. [2021-03-11 04:48:50,067 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3132 conditions, 1424 events. 470/1424 cut-off events. For 990/1011 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 12003 event pairs, 129 based on Foata normal form. 1/1377 useless extension candidates. Maximal degree in co-relation 3117. Up to 324 conditions per place. [2021-03-11 04:48:50,073 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 33 selfloop transitions, 11 changer transitions 1/66 dead transitions. [2021-03-11 04:48:50,073 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 66 transitions, 361 flow [2021-03-11 04:48:50,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 04:48:50,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 04:48:50,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 04:48:50,074 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 04:48:50,074 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 04:48:50,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 04:48:50,075 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:48:50,075 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 04:48:50,076 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:48:50,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:48:50,077 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:48:50,077 INFO L185 Difference]: Start difference. First operand has 58 places, 34 transitions, 125 flow. Second operand 9 states and 674 transitions. [2021-03-11 04:48:50,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 66 transitions, 361 flow [2021-03-11 04:48:50,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 66 transitions, 342 flow, removed 6 selfloop flow, removed 2 redundant places. [2021-03-11 04:48:50,081 INFO L241 Difference]: Finished difference. Result has 70 places, 41 transitions, 214 flow [2021-03-11 04:48:50,081 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=214, PETRI_PLACES=70, PETRI_TRANSITIONS=41} [2021-03-11 04:48:50,082 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 19 predicate places. [2021-03-11 04:48:50,082 INFO L480 AbstractCegarLoop]: Abstraction has has 70 places, 41 transitions, 214 flow [2021-03-11 04:48:50,082 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:48:50,082 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:48:50,082 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:48:50,082 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-11 04:48:50,082 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:48:50,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:48:50,083 INFO L82 PathProgramCache]: Analyzing trace with hash 894316305, now seen corresponding path program 3 times [2021-03-11 04:48:50,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:48:50,083 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445383720] [2021-03-11 04:48:50,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:48:50,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:48:50,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:48:50,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:48:50,146 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:48:50,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:48:50,150 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:48:50,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 04:48:50,158 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 04:48:50,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 04:48:50,169 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 04:48:50,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 04:48:50,185 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 04:48:50,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 04:48:50,212 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 04:48:50,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 04:48:50,237 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:48:50,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:48:50,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:48:50,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445383720] [2021-03-11 04:48:50,262 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:48:50,262 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:48:50,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301810389] [2021-03-11 04:48:50,264 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:48:50,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:48:50,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:48:50,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:48:50,265 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:48:50,265 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 41 transitions, 214 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:48:50,266 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:48:50,266 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:48:50,266 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:48:50,438 INFO L129 PetriNetUnfolder]: 558/1955 cut-off events. [2021-03-11 04:48:50,438 INFO L130 PetriNetUnfolder]: For 3559/3607 co-relation queries the response was YES. [2021-03-11 04:48:50,445 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5293 conditions, 1955 events. 558/1955 cut-off events. For 3559/3607 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 19050 event pairs, 167 based on Foata normal form. 1/1905 useless extension candidates. Maximal degree in co-relation 5272. Up to 431 conditions per place. [2021-03-11 04:48:50,452 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 42 selfloop transitions, 16 changer transitions 2/81 dead transitions. [2021-03-11 04:48:50,453 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 81 transitions, 604 flow [2021-03-11 04:48:50,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 04:48:50,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 04:48:50,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 04:48:50,454 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 04:48:50,454 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 04:48:50,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 04:48:50,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:48:50,454 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 04:48:50,455 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:48:50,457 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:48:50,458 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:48:50,458 INFO L185 Difference]: Start difference. First operand has 70 places, 41 transitions, 214 flow. Second operand 9 states and 674 transitions. [2021-03-11 04:48:50,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 81 transitions, 604 flow [2021-03-11 04:48:50,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 81 transitions, 568 flow, removed 12 selfloop flow, removed 2 redundant places. [2021-03-11 04:48:50,466 INFO L241 Difference]: Finished difference. Result has 82 places, 51 transitions, 362 flow [2021-03-11 04:48:50,466 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=362, PETRI_PLACES=82, PETRI_TRANSITIONS=51} [2021-03-11 04:48:50,466 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 31 predicate places. [2021-03-11 04:48:50,466 INFO L480 AbstractCegarLoop]: Abstraction has has 82 places, 51 transitions, 362 flow [2021-03-11 04:48:50,466 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:48:50,466 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:48:50,467 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:48:50,467 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-11 04:48:50,467 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:48:50,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:48:50,467 INFO L82 PathProgramCache]: Analyzing trace with hash 2117433717, now seen corresponding path program 4 times [2021-03-11 04:48:50,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:48:50,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427550059] [2021-03-11 04:48:50,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:48:50,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:48:50,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:48:50,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:48:50,525 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:48:50,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:48:50,529 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:48:50,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 04:48:50,541 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 04:48:50,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 04:48:50,552 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 04:48:50,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 04:48:50,568 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 04:48:50,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 04:48:50,587 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 04:48:50,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 04:48:50,611 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:48:50,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:48:50,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:48:50,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427550059] [2021-03-11 04:48:50,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:48:50,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:48:50,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18455116] [2021-03-11 04:48:50,635 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:48:50,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:48:50,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:48:50,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:48:50,636 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:48:50,636 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 51 transitions, 362 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:48:50,636 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:48:50,637 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:48:50,637 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:48:50,913 INFO L129 PetriNetUnfolder]: 651/2859 cut-off events. [2021-03-11 04:48:50,914 INFO L130 PetriNetUnfolder]: For 8852/8953 co-relation queries the response was YES. [2021-03-11 04:48:50,926 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8537 conditions, 2859 events. 651/2859 cut-off events. For 8852/8953 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 32819 event pairs, 190 based on Foata normal form. 1/2776 useless extension candidates. Maximal degree in co-relation 8510. Up to 600 conditions per place. [2021-03-11 04:48:50,938 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 63 selfloop transitions, 25 changer transitions 2/111 dead transitions. [2021-03-11 04:48:50,938 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 111 transitions, 1100 flow [2021-03-11 04:48:50,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 04:48:50,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 04:48:50,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 04:48:50,940 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 04:48:50,940 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 04:48:50,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 04:48:50,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:48:50,940 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 04:48:50,941 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:48:50,942 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:48:50,942 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:48:50,942 INFO L185 Difference]: Start difference. First operand has 82 places, 51 transitions, 362 flow. Second operand 9 states and 674 transitions. [2021-03-11 04:48:50,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 111 transitions, 1100 flow [2021-03-11 04:48:50,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 111 transitions, 1051 flow, removed 17 selfloop flow, removed 3 redundant places. [2021-03-11 04:48:50,956 INFO L241 Difference]: Finished difference. Result has 93 places, 72 transitions, 703 flow [2021-03-11 04:48:50,956 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=349, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=703, PETRI_PLACES=93, PETRI_TRANSITIONS=72} [2021-03-11 04:48:50,957 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 42 predicate places. [2021-03-11 04:48:50,957 INFO L480 AbstractCegarLoop]: Abstraction has has 93 places, 72 transitions, 703 flow [2021-03-11 04:48:50,957 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:48:50,957 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:48:50,957 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:48:50,957 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-11 04:48:50,957 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:48:50,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:48:50,957 INFO L82 PathProgramCache]: Analyzing trace with hash 1670539023, now seen corresponding path program 5 times [2021-03-11 04:48:50,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:48:50,958 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968094599] [2021-03-11 04:48:50,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:48:50,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:48:50,976 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:48:50,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:48:50,976 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:48:50,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:48:50,982 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:48:50,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 04:48:50,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:48:50,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 04:48:50,996 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 04:48:50,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 04:48:51,008 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 04:48:51,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 04:48:51,034 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 04:48:51,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 04:48:51,058 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:48:51,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:48:51,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:48:51,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968094599] [2021-03-11 04:48:51,079 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:48:51,079 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:48:51,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813930990] [2021-03-11 04:48:51,079 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:48:51,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:48:51,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:48:51,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:48:51,081 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:48:51,081 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 72 transitions, 703 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:48:51,081 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:48:51,081 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:48:51,081 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:48:51,499 INFO L129 PetriNetUnfolder]: 760/4001 cut-off events. [2021-03-11 04:48:51,499 INFO L130 PetriNetUnfolder]: For 16785/16926 co-relation queries the response was YES. [2021-03-11 04:48:51,514 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12696 conditions, 4001 events. 760/4001 cut-off events. For 16785/16926 co-relation queries the response was YES. Maximal size of possible extension queue 534. Compared 51318 event pairs, 248 based on Foata normal form. 1/3893 useless extension candidates. Maximal degree in co-relation 12664. Up to 848 conditions per place. [2021-03-11 04:48:51,528 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 73 selfloop transitions, 33 changer transitions 1/128 dead transitions. [2021-03-11 04:48:51,528 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 128 transitions, 1503 flow [2021-03-11 04:48:51,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 04:48:51,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 04:48:51,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 04:48:51,529 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 04:48:51,529 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 04:48:51,529 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 04:48:51,530 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:48:51,530 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 04:48:51,531 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:48:51,532 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:48:51,532 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:48:51,532 INFO L185 Difference]: Start difference. First operand has 93 places, 72 transitions, 703 flow. Second operand 9 states and 674 transitions. [2021-03-11 04:48:51,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 128 transitions, 1503 flow [2021-03-11 04:48:51,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 128 transitions, 1473 flow, removed 10 selfloop flow, removed 2 redundant places. [2021-03-11 04:48:51,549 INFO L241 Difference]: Finished difference. Result has 105 places, 89 transitions, 1041 flow [2021-03-11 04:48:51,549 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=689, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1041, PETRI_PLACES=105, PETRI_TRANSITIONS=89} [2021-03-11 04:48:51,549 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 54 predicate places. [2021-03-11 04:48:51,549 INFO L480 AbstractCegarLoop]: Abstraction has has 105 places, 89 transitions, 1041 flow [2021-03-11 04:48:51,550 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:48:51,550 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:48:51,550 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:48:51,550 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-11 04:48:51,550 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:48:51,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:48:51,550 INFO L82 PathProgramCache]: Analyzing trace with hash 1636572197, now seen corresponding path program 6 times [2021-03-11 04:48:51,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:48:51,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844588261] [2021-03-11 04:48:51,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:48:51,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:48:51,570 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:48:51,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:48:51,571 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:48:51,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:48:51,574 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 04:48:51,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 04:48:51,581 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 04:48:51,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 04:48:51,590 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 04:48:51,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 04:48:51,601 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 04:48:51,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 04:48:51,626 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 04:48:51,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 04:48:51,648 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:48:51,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:48:51,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:48:51,667 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844588261] [2021-03-11 04:48:51,667 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:48:51,667 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:48:51,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899905207] [2021-03-11 04:48:51,668 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:48:51,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:48:51,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:48:51,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:48:51,669 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:48:51,669 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 89 transitions, 1041 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:48:51,669 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:48:51,669 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:48:51,669 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:48:52,137 INFO L129 PetriNetUnfolder]: 816/4465 cut-off events. [2021-03-11 04:48:52,137 INFO L130 PetriNetUnfolder]: For 26709/26971 co-relation queries the response was YES. [2021-03-11 04:48:52,154 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15866 conditions, 4465 events. 816/4465 cut-off events. For 26709/26971 co-relation queries the response was YES. Maximal size of possible extension queue 619. Compared 59216 event pairs, 260 based on Foata normal form. 1/4368 useless extension candidates. Maximal degree in co-relation 15828. Up to 958 conditions per place. [2021-03-11 04:48:52,167 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 85 selfloop transitions, 40 changer transitions 1/147 dead transitions. [2021-03-11 04:48:52,168 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 147 transitions, 2056 flow [2021-03-11 04:48:52,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 04:48:52,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 04:48:52,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 04:48:52,169 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 04:48:52,169 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 04:48:52,169 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 04:48:52,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:48:52,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 04:48:52,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:48:52,171 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:48:52,171 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:48:52,171 INFO L185 Difference]: Start difference. First operand has 105 places, 89 transitions, 1041 flow. Second operand 9 states and 674 transitions. [2021-03-11 04:48:52,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 147 transitions, 2056 flow [2021-03-11 04:48:52,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 147 transitions, 1943 flow, removed 44 selfloop flow, removed 2 redundant places. [2021-03-11 04:48:52,197 INFO L241 Difference]: Finished difference. Result has 117 places, 115 transitions, 1561 flow [2021-03-11 04:48:52,198 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=981, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1561, PETRI_PLACES=117, PETRI_TRANSITIONS=115} [2021-03-11 04:48:52,198 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 66 predicate places. [2021-03-11 04:48:52,198 INFO L480 AbstractCegarLoop]: Abstraction has has 117 places, 115 transitions, 1561 flow [2021-03-11 04:48:52,198 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:48:52,198 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:48:52,198 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:48:52,198 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-11 04:48:52,198 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:48:52,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:48:52,199 INFO L82 PathProgramCache]: Analyzing trace with hash -119957053, now seen corresponding path program 7 times [2021-03-11 04:48:52,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:48:52,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777483923] [2021-03-11 04:48:52,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:48:52,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:48:52,221 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:48:52,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:48:52,222 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:48:52,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:48:52,225 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:48:52,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 04:48:52,231 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:48:52,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 04:48:52,240 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 04:48:52,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 04:48:52,260 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 04:48:52,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 04:48:52,283 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 04:48:52,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 04:48:52,304 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:48:52,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:48:52,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:48:52,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777483923] [2021-03-11 04:48:52,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:48:52,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:48:52,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574704892] [2021-03-11 04:48:52,324 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:48:52,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:48:52,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:48:52,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:48:52,325 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:48:52,325 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 115 transitions, 1561 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:48:52,325 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:48:52,325 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:48:52,325 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:48:52,877 INFO L129 PetriNetUnfolder]: 821/4986 cut-off events. [2021-03-11 04:48:52,878 INFO L130 PetriNetUnfolder]: For 38898/39375 co-relation queries the response was YES. [2021-03-11 04:48:52,901 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19210 conditions, 4986 events. 821/4986 cut-off events. For 38898/39375 co-relation queries the response was YES. Maximal size of possible extension queue 691. Compared 68683 event pairs, 357 based on Foata normal form. 4/4854 useless extension candidates. Maximal degree in co-relation 19166. Up to 945 conditions per place. [2021-03-11 04:48:52,919 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 83 selfloop transitions, 62 changer transitions 1/167 dead transitions. [2021-03-11 04:48:52,919 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 167 transitions, 2540 flow [2021-03-11 04:48:52,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 04:48:52,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 04:48:52,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 04:48:52,921 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 04:48:52,921 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 04:48:52,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 04:48:52,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:48:52,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 04:48:52,922 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:48:52,923 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:48:52,923 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:48:52,923 INFO L185 Difference]: Start difference. First operand has 117 places, 115 transitions, 1561 flow. Second operand 9 states and 674 transitions. [2021-03-11 04:48:52,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 167 transitions, 2540 flow [2021-03-11 04:48:52,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 167 transitions, 2423 flow, removed 45 selfloop flow, removed 2 redundant places. [2021-03-11 04:48:52,979 INFO L241 Difference]: Finished difference. Result has 129 places, 131 transitions, 1963 flow [2021-03-11 04:48:52,979 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=1511, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1963, PETRI_PLACES=129, PETRI_TRANSITIONS=131} [2021-03-11 04:48:52,980 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 78 predicate places. [2021-03-11 04:48:52,980 INFO L480 AbstractCegarLoop]: Abstraction has has 129 places, 131 transitions, 1963 flow [2021-03-11 04:48:52,980 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:48:52,980 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:48:52,980 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:48:52,980 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-03-11 04:48:52,980 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:48:52,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:48:52,981 INFO L82 PathProgramCache]: Analyzing trace with hash -47115529, now seen corresponding path program 8 times [2021-03-11 04:48:52,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:48:52,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285319108] [2021-03-11 04:48:52,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:48:52,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:48:53,008 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:48:53,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:48:53,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:48:53,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:48:53,013 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:48:53,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 04:48:53,019 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 04:48:53,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 04:48:53,028 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 04:48:53,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 04:48:53,042 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 04:48:53,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 04:48:53,059 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 04:48:53,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 04:48:53,080 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:48:53,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:48:53,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:48:53,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285319108] [2021-03-11 04:48:53,099 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:48:53,099 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:48:53,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446151326] [2021-03-11 04:48:53,100 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:48:53,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:48:53,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:48:53,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:48:53,101 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:48:53,101 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 131 transitions, 1963 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:48:53,101 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:48:53,101 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:48:53,101 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:48:53,824 INFO L129 PetriNetUnfolder]: 815/5682 cut-off events. [2021-03-11 04:48:53,824 INFO L130 PetriNetUnfolder]: For 52541/53267 co-relation queries the response was YES. [2021-03-11 04:48:53,843 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22897 conditions, 5682 events. 815/5682 cut-off events. For 52541/53267 co-relation queries the response was YES. Maximal size of possible extension queue 801. Compared 82279 event pairs, 350 based on Foata normal form. 6/5551 useless extension candidates. Maximal degree in co-relation 22847. Up to 1053 conditions per place. [2021-03-11 04:48:53,858 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 109 selfloop transitions, 70 changer transitions 2/202 dead transitions. [2021-03-11 04:48:53,858 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 202 transitions, 3393 flow [2021-03-11 04:48:53,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 04:48:53,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 04:48:53,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 04:48:53,860 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 04:48:53,860 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 04:48:53,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 04:48:53,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:48:53,860 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 04:48:53,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:48:53,862 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:48:53,862 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:48:53,862 INFO L185 Difference]: Start difference. First operand has 129 places, 131 transitions, 1963 flow. Second operand 9 states and 674 transitions. [2021-03-11 04:48:53,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 202 transitions, 3393 flow [2021-03-11 04:48:53,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 202 transitions, 3263 flow, removed 47 selfloop flow, removed 2 redundant places. [2021-03-11 04:48:53,931 INFO L241 Difference]: Finished difference. Result has 141 places, 153 transitions, 2503 flow [2021-03-11 04:48:53,932 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=1879, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2503, PETRI_PLACES=141, PETRI_TRANSITIONS=153} [2021-03-11 04:48:53,932 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 90 predicate places. [2021-03-11 04:48:53,932 INFO L480 AbstractCegarLoop]: Abstraction has has 141 places, 153 transitions, 2503 flow [2021-03-11 04:48:53,932 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:48:53,932 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:48:53,932 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:48:53,932 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-03-11 04:48:53,932 INFO L428 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:48:54,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:48:54,007 INFO L82 PathProgramCache]: Analyzing trace with hash 1582766679, now seen corresponding path program 9 times [2021-03-11 04:48:54,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:48:54,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908335729] [2021-03-11 04:48:54,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:48:54,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:48:54,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:48:54,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:48:54,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:48:54,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:48:54,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:48:54,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 04:48:54,046 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 04:48:54,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 04:48:54,057 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 04:48:54,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 04:48:54,072 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 04:48:54,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 04:48:54,091 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 04:48:54,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 04:48:54,114 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:48:54,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:48:54,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:48:54,147 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908335729] [2021-03-11 04:48:54,147 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:48:54,147 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:48:54,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731551105] [2021-03-11 04:48:54,148 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:48:54,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:48:54,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:48:54,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:48:54,149 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:48:54,149 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 153 transitions, 2503 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:48:54,149 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:48:54,149 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:48:54,149 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:48:55,189 INFO L129 PetriNetUnfolder]: 796/6672 cut-off events. [2021-03-11 04:48:55,189 INFO L130 PetriNetUnfolder]: For 71551/72513 co-relation queries the response was YES. [2021-03-11 04:48:55,212 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27503 conditions, 6672 events. 796/6672 cut-off events. For 71551/72513 co-relation queries the response was YES. Maximal size of possible extension queue 916. Compared 102775 event pairs, 301 based on Foata normal form. 12/6469 useless extension candidates. Maximal degree in co-relation 27447. Up to 1096 conditions per place. [2021-03-11 04:48:55,229 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 140 selfloop transitions, 75 changer transitions 2/238 dead transitions. [2021-03-11 04:48:55,229 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 238 transitions, 4339 flow [2021-03-11 04:48:55,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 04:48:55,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 04:48:55,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 04:48:55,230 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 04:48:55,231 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 04:48:55,231 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 04:48:55,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:48:55,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 04:48:55,232 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:48:55,233 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:48:55,233 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:48:55,233 INFO L185 Difference]: Start difference. First operand has 141 places, 153 transitions, 2503 flow. Second operand 9 states and 674 transitions. [2021-03-11 04:48:55,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 238 transitions, 4339 flow [2021-03-11 04:48:55,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 238 transitions, 4192 flow, removed 55 selfloop flow, removed 3 redundant places. [2021-03-11 04:48:55,334 INFO L241 Difference]: Finished difference. Result has 152 places, 181 transitions, 3202 flow [2021-03-11 04:48:55,334 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=2408, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3202, PETRI_PLACES=152, PETRI_TRANSITIONS=181} [2021-03-11 04:48:55,335 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 101 predicate places. [2021-03-11 04:48:55,335 INFO L480 AbstractCegarLoop]: Abstraction has has 152 places, 181 transitions, 3202 flow [2021-03-11 04:48:55,335 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:48:55,335 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:48:55,335 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:48:55,335 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-03-11 04:48:55,335 INFO L428 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:48:55,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:48:55,335 INFO L82 PathProgramCache]: Analyzing trace with hash -1395914789, now seen corresponding path program 10 times [2021-03-11 04:48:55,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:48:55,336 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575225339] [2021-03-11 04:48:55,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:48:55,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:48:55,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:48:55,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:48:55,351 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:48:55,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:48:55,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:48:55,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 04:48:55,360 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:48:55,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 04:48:55,369 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 04:48:55,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 04:48:55,383 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 04:48:55,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 04:48:55,415 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 04:48:55,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 04:48:55,439 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:48:55,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:48:55,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:48:55,462 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575225339] [2021-03-11 04:48:55,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:48:55,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:48:55,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207363175] [2021-03-11 04:48:55,465 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:48:55,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:48:55,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:48:55,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:48:55,466 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:48:55,466 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 181 transitions, 3202 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:48:55,466 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:48:55,466 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:48:55,466 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:48:56,590 INFO L129 PetriNetUnfolder]: 784/6842 cut-off events. [2021-03-11 04:48:56,590 INFO L130 PetriNetUnfolder]: For 86046/86887 co-relation queries the response was YES. [2021-03-11 04:48:56,615 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29858 conditions, 6842 events. 784/6842 cut-off events. For 86046/86887 co-relation queries the response was YES. Maximal size of possible extension queue 952. Compared 106050 event pairs, 321 based on Foata normal form. 14/6664 useless extension candidates. Maximal degree in co-relation 29797. Up to 1078 conditions per place. [2021-03-11 04:48:56,633 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 122 selfloop transitions, 101 changer transitions 1/245 dead transitions. [2021-03-11 04:48:56,633 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 245 transitions, 4736 flow [2021-03-11 04:48:56,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 04:48:56,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 04:48:56,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 04:48:56,635 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 04:48:56,636 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 04:48:56,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 04:48:56,636 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:48:56,636 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 04:48:56,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:48:56,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:48:56,639 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:48:56,639 INFO L185 Difference]: Start difference. First operand has 152 places, 181 transitions, 3202 flow. Second operand 9 states and 674 transitions. [2021-03-11 04:48:56,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 245 transitions, 4736 flow [2021-03-11 04:48:56,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 245 transitions, 4562 flow, removed 68 selfloop flow, removed 3 redundant places. [2021-03-11 04:48:56,785 INFO L241 Difference]: Finished difference. Result has 163 places, 199 transitions, 3802 flow [2021-03-11 04:48:56,785 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=3066, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3802, PETRI_PLACES=163, PETRI_TRANSITIONS=199} [2021-03-11 04:48:56,786 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 112 predicate places. [2021-03-11 04:48:56,786 INFO L480 AbstractCegarLoop]: Abstraction has has 163 places, 199 transitions, 3802 flow [2021-03-11 04:48:56,786 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:48:56,786 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:48:56,786 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:48:56,786 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-03-11 04:48:56,786 INFO L428 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:48:56,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:48:56,786 INFO L82 PathProgramCache]: Analyzing trace with hash -1387432347, now seen corresponding path program 11 times [2021-03-11 04:48:56,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:48:56,786 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131247874] [2021-03-11 04:48:56,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:48:56,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:48:56,808 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:48:56,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:48:56,809 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:48:56,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:48:56,812 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 04:48:56,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 04:48:56,818 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 04:48:56,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 04:48:56,827 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 04:48:56,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 04:48:56,849 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 04:48:56,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 04:48:56,867 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 04:48:56,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 04:48:56,895 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:48:56,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:48:56,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:48:56,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131247874] [2021-03-11 04:48:56,919 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:48:56,919 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:48:56,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835825786] [2021-03-11 04:48:56,920 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:48:56,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:48:56,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:48:56,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:48:56,920 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:48:56,921 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 199 transitions, 3802 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:48:56,921 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:48:56,921 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:48:56,921 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:48:58,000 INFO L129 PetriNetUnfolder]: 769/7025 cut-off events. [2021-03-11 04:48:58,000 INFO L130 PetriNetUnfolder]: For 103402/104932 co-relation queries the response was YES. [2021-03-11 04:48:58,029 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32212 conditions, 7025 events. 769/7025 cut-off events. For 103402/104932 co-relation queries the response was YES. Maximal size of possible extension queue 986. Compared 109922 event pairs, 363 based on Foata normal form. 20/6846 useless extension candidates. Maximal degree in co-relation 32146. Up to 1025 conditions per place. [2021-03-11 04:48:58,047 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 144 selfloop transitions, 97 changer transitions 3/265 dead transitions. [2021-03-11 04:48:58,048 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 265 transitions, 5598 flow [2021-03-11 04:48:58,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 04:48:58,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 04:48:58,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 04:48:58,049 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 04:48:58,049 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 04:48:58,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 04:48:58,049 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:48:58,049 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 04:48:58,050 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:48:58,051 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:48:58,051 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:48:58,051 INFO L185 Difference]: Start difference. First operand has 163 places, 199 transitions, 3802 flow. Second operand 9 states and 674 transitions. [2021-03-11 04:48:58,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 265 transitions, 5598 flow [2021-03-11 04:48:58,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 265 transitions, 5418 flow, removed 72 selfloop flow, removed 2 redundant places. [2021-03-11 04:48:58,253 INFO L241 Difference]: Finished difference. Result has 175 places, 213 transitions, 4360 flow [2021-03-11 04:48:58,254 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=3672, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4360, PETRI_PLACES=175, PETRI_TRANSITIONS=213} [2021-03-11 04:48:58,254 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 124 predicate places. [2021-03-11 04:48:58,254 INFO L480 AbstractCegarLoop]: Abstraction has has 175 places, 213 transitions, 4360 flow [2021-03-11 04:48:58,254 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:48:58,254 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:48:58,254 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:48:58,254 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-03-11 04:48:58,255 INFO L428 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:48:58,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:48:58,255 INFO L82 PathProgramCache]: Analyzing trace with hash 282677335, now seen corresponding path program 12 times [2021-03-11 04:48:58,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:48:58,255 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002123712] [2021-03-11 04:48:58,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:48:58,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:48:58,275 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:48:58,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:48:58,275 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:48:58,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:48:58,279 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:48:58,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 04:48:58,285 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 04:48:58,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 04:48:58,296 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 04:48:58,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 04:48:58,309 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 04:48:58,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 04:48:58,327 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 04:48:58,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 04:48:58,414 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:48:58,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:48:58,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:48:58,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002123712] [2021-03-11 04:48:58,441 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:48:58,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:48:58,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184436170] [2021-03-11 04:48:58,441 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:48:58,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:48:58,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:48:58,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:48:58,442 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:48:58,442 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 213 transitions, 4360 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:48:58,443 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:48:58,443 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:48:58,443 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:48:59,687 INFO L129 PetriNetUnfolder]: 771/7315 cut-off events. [2021-03-11 04:48:59,688 INFO L130 PetriNetUnfolder]: For 124393/126127 co-relation queries the response was YES. [2021-03-11 04:48:59,809 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35342 conditions, 7315 events. 771/7315 cut-off events. For 124393/126127 co-relation queries the response was YES. Maximal size of possible extension queue 1021. Compared 115894 event pairs, 306 based on Foata normal form. 32/7113 useless extension candidates. Maximal degree in co-relation 35270. Up to 1097 conditions per place. [2021-03-11 04:48:59,829 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 131 selfloop transitions, 116 changer transitions 1/269 dead transitions. [2021-03-11 04:48:59,829 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 269 transitions, 6038 flow [2021-03-11 04:48:59,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 04:48:59,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 04:48:59,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 04:48:59,831 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 04:48:59,831 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 04:48:59,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 04:48:59,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:48:59,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 04:48:59,832 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:48:59,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:48:59,833 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:48:59,833 INFO L185 Difference]: Start difference. First operand has 175 places, 213 transitions, 4360 flow. Second operand 9 states and 674 transitions. [2021-03-11 04:48:59,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 269 transitions, 6038 flow [2021-03-11 04:49:00,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 269 transitions, 5841 flow, removed 80 selfloop flow, removed 3 redundant places. [2021-03-11 04:49:00,119 INFO L241 Difference]: Finished difference. Result has 185 places, 236 transitions, 5135 flow [2021-03-11 04:49:00,119 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=4233, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5135, PETRI_PLACES=185, PETRI_TRANSITIONS=236} [2021-03-11 04:49:00,120 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 134 predicate places. [2021-03-11 04:49:00,120 INFO L480 AbstractCegarLoop]: Abstraction has has 185 places, 236 transitions, 5135 flow [2021-03-11 04:49:00,120 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:49:00,120 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:49:00,120 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:49:00,120 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-03-11 04:49:00,120 INFO L428 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:49:00,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:49:00,120 INFO L82 PathProgramCache]: Analyzing trace with hash 1751962849, now seen corresponding path program 13 times [2021-03-11 04:49:00,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:49:00,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299748814] [2021-03-11 04:49:00,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:49:00,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:49:00,135 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:49:00,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:49:00,135 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:49:00,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:49:00,139 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 04:49:00,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 04:49:00,145 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 04:49:00,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 04:49:00,154 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 04:49:00,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 04:49:00,174 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 04:49:00,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 04:49:00,193 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 04:49:00,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 04:49:00,217 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:49:00,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:49:00,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:49:00,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299748814] [2021-03-11 04:49:00,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:49:00,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:49:00,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540276093] [2021-03-11 04:49:00,240 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:49:00,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:49:00,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:49:00,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:49:00,241 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:49:00,241 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 236 transitions, 5135 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:49:00,241 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:49:00,241 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:49:00,241 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:49:01,508 INFO L129 PetriNetUnfolder]: 768/7356 cut-off events. [2021-03-11 04:49:01,508 INFO L130 PetriNetUnfolder]: For 132692/134783 co-relation queries the response was YES. [2021-03-11 04:49:01,546 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36092 conditions, 7356 events. 768/7356 cut-off events. For 132692/134783 co-relation queries the response was YES. Maximal size of possible extension queue 1030. Compared 116487 event pairs, 375 based on Foata normal form. 25/7147 useless extension candidates. Maximal degree in co-relation 36016. Up to 1025 conditions per place. [2021-03-11 04:49:01,568 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 162 selfloop transitions, 122 changer transitions 3/308 dead transitions. [2021-03-11 04:49:01,568 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 308 transitions, 7277 flow [2021-03-11 04:49:01,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 04:49:01,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 04:49:01,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 04:49:01,569 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 04:49:01,569 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 04:49:01,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 04:49:01,570 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:49:01,570 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 04:49:01,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:49:01,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:49:01,572 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:49:01,572 INFO L185 Difference]: Start difference. First operand has 185 places, 236 transitions, 5135 flow. Second operand 9 states and 674 transitions. [2021-03-11 04:49:01,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 308 transitions, 7277 flow [2021-03-11 04:49:01,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 308 transitions, 6979 flow, removed 79 selfloop flow, removed 3 redundant places. [2021-03-11 04:49:01,895 INFO L241 Difference]: Finished difference. Result has 195 places, 252 transitions, 5709 flow [2021-03-11 04:49:01,895 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=4929, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5709, PETRI_PLACES=195, PETRI_TRANSITIONS=252} [2021-03-11 04:49:01,896 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 144 predicate places. [2021-03-11 04:49:01,896 INFO L480 AbstractCegarLoop]: Abstraction has has 195 places, 252 transitions, 5709 flow [2021-03-11 04:49:01,896 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:49:01,896 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:49:01,896 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:49:01,896 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-03-11 04:49:01,896 INFO L428 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:49:01,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:49:01,897 INFO L82 PathProgramCache]: Analyzing trace with hash -669153749, now seen corresponding path program 14 times [2021-03-11 04:49:01,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:49:01,897 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660449288] [2021-03-11 04:49:01,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:49:01,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:49:01,915 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:49:01,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:49:01,916 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:49:01,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:49:01,920 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 04:49:01,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 04:49:01,927 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 04:49:01,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 04:49:01,936 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 04:49:01,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 04:49:01,948 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 04:49:01,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 04:49:01,972 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 04:49:01,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 04:49:01,995 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:49:01,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:49:02,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:49:02,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660449288] [2021-03-11 04:49:02,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:49:02,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:49:02,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428670323] [2021-03-11 04:49:02,017 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:49:02,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:49:02,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:49:02,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:49:02,018 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:49:02,018 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 252 transitions, 5709 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:49:02,018 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:49:02,018 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:49:02,019 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:49:03,369 INFO L129 PetriNetUnfolder]: 764/7006 cut-off events. [2021-03-11 04:49:03,370 INFO L130 PetriNetUnfolder]: For 147640/149433 co-relation queries the response was YES. [2021-03-11 04:49:03,401 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37148 conditions, 7006 events. 764/7006 cut-off events. For 147640/149433 co-relation queries the response was YES. Maximal size of possible extension queue 1016. Compared 109575 event pairs, 452 based on Foata normal form. 36/6792 useless extension candidates. Maximal degree in co-relation 37067. Up to 1088 conditions per place. [2021-03-11 04:49:03,418 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 115 selfloop transitions, 158 changer transitions 5/299 dead transitions. [2021-03-11 04:49:03,418 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 299 transitions, 7339 flow [2021-03-11 04:49:03,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 04:49:03,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 04:49:03,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 04:49:03,419 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 04:49:03,419 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 04:49:03,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 04:49:03,420 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:49:03,420 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 04:49:03,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:49:03,421 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:49:03,421 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:49:03,421 INFO L185 Difference]: Start difference. First operand has 195 places, 252 transitions, 5709 flow. Second operand 9 states and 674 transitions. [2021-03-11 04:49:03,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 299 transitions, 7339 flow [2021-03-11 04:49:03,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 299 transitions, 7078 flow, removed 66 selfloop flow, removed 4 redundant places. [2021-03-11 04:49:03,751 INFO L241 Difference]: Finished difference. Result has 204 places, 261 transitions, 6262 flow [2021-03-11 04:49:03,751 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=5498, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6262, PETRI_PLACES=204, PETRI_TRANSITIONS=261} [2021-03-11 04:49:03,751 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 153 predicate places. [2021-03-11 04:49:03,751 INFO L480 AbstractCegarLoop]: Abstraction has has 204 places, 261 transitions, 6262 flow [2021-03-11 04:49:03,751 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:49:03,751 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:49:03,751 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:49:03,751 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-03-11 04:49:03,751 INFO L428 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:49:03,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:49:03,752 INFO L82 PathProgramCache]: Analyzing trace with hash 1908607675, now seen corresponding path program 15 times [2021-03-11 04:49:03,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:49:03,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846767231] [2021-03-11 04:49:03,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:49:03,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:49:03,772 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:49:03,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:49:03,773 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:49:03,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:49:03,776 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 04:49:03,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 04:49:03,782 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 04:49:03,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 04:49:03,790 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 04:49:03,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 04:49:03,802 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 04:49:03,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 04:49:03,822 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 04:49:03,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 04:49:03,846 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:49:03,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:49:03,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:49:03,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846767231] [2021-03-11 04:49:03,868 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:49:03,868 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:49:03,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523282034] [2021-03-11 04:49:03,869 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:49:03,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:49:03,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:49:03,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:49:03,869 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:49:03,870 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 261 transitions, 6262 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:49:03,870 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:49:03,870 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:49:03,870 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:49:05,113 INFO L129 PetriNetUnfolder]: 765/7301 cut-off events. [2021-03-11 04:49:05,113 INFO L130 PetriNetUnfolder]: For 156851/158955 co-relation queries the response was YES. [2021-03-11 04:49:05,161 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38408 conditions, 7301 events. 765/7301 cut-off events. For 156851/158955 co-relation queries the response was YES. Maximal size of possible extension queue 1029. Compared 115464 event pairs, 454 based on Foata normal form. 33/7095 useless extension candidates. Maximal degree in co-relation 38323. Up to 1025 conditions per place. [2021-03-11 04:49:05,183 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 151 selfloop transitions, 134 changer transitions 3/309 dead transitions. [2021-03-11 04:49:05,183 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 309 transitions, 7924 flow [2021-03-11 04:49:05,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 04:49:05,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 04:49:05,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 04:49:05,184 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 04:49:05,184 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 04:49:05,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 04:49:05,184 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:49:05,184 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 04:49:05,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:49:05,186 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:49:05,186 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:49:05,186 INFO L185 Difference]: Start difference. First operand has 204 places, 261 transitions, 6262 flow. Second operand 9 states and 674 transitions. [2021-03-11 04:49:05,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 309 transitions, 7924 flow [2021-03-11 04:49:05,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 309 transitions, 7647 flow, removed 73 selfloop flow, removed 4 redundant places. [2021-03-11 04:49:05,718 INFO L241 Difference]: Finished difference. Result has 212 places, 276 transitions, 6886 flow [2021-03-11 04:49:05,719 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=6073, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6886, PETRI_PLACES=212, PETRI_TRANSITIONS=276} [2021-03-11 04:49:05,719 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 161 predicate places. [2021-03-11 04:49:05,719 INFO L480 AbstractCegarLoop]: Abstraction has has 212 places, 276 transitions, 6886 flow [2021-03-11 04:49:05,719 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:49:05,719 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:49:05,719 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:49:05,719 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-03-11 04:49:05,719 INFO L428 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:49:05,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:49:05,719 INFO L82 PathProgramCache]: Analyzing trace with hash 1578440007, now seen corresponding path program 16 times [2021-03-11 04:49:05,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:49:05,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163173788] [2021-03-11 04:49:05,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:49:05,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:49:05,748 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:49:05,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:49:05,749 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:49:05,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:49:05,752 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 04:49:05,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 04:49:05,763 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 04:49:05,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 04:49:05,773 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 04:49:05,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 04:49:05,787 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 04:49:05,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 04:49:05,805 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 04:49:05,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 04:49:05,833 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:49:05,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:49:05,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:49:05,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163173788] [2021-03-11 04:49:05,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:49:05,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:49:05,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203407739] [2021-03-11 04:49:05,855 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:49:05,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:49:05,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:49:05,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:49:05,856 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:49:05,857 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 276 transitions, 6886 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:49:05,857 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:49:05,857 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:49:05,857 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:49:07,271 INFO L129 PetriNetUnfolder]: 761/7407 cut-off events. [2021-03-11 04:49:07,271 INFO L130 PetriNetUnfolder]: For 155561/157671 co-relation queries the response was YES. [2021-03-11 04:49:07,312 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38981 conditions, 7407 events. 761/7407 cut-off events. For 155561/157671 co-relation queries the response was YES. Maximal size of possible extension queue 1045. Compared 117819 event pairs, 373 based on Foata normal form. 42/7219 useless extension candidates. Maximal degree in co-relation 38893. Up to 1088 conditions per place. [2021-03-11 04:49:07,331 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 114 selfloop transitions, 176 changer transitions 2/313 dead transitions. [2021-03-11 04:49:07,332 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 313 transitions, 8290 flow [2021-03-11 04:49:07,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 04:49:07,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 04:49:07,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 04:49:07,332 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 04:49:07,333 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 04:49:07,333 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 04:49:07,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:49:07,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 04:49:07,333 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:49:07,334 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:49:07,334 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:49:07,334 INFO L185 Difference]: Start difference. First operand has 212 places, 276 transitions, 6886 flow. Second operand 9 states and 674 transitions. [2021-03-11 04:49:07,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 313 transitions, 8290 flow [2021-03-11 04:49:07,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 313 transitions, 7966 flow, removed 57 selfloop flow, removed 5 redundant places. [2021-03-11 04:49:07,722 INFO L241 Difference]: Finished difference. Result has 218 places, 282 transitions, 7169 flow [2021-03-11 04:49:07,722 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=6602, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7169, PETRI_PLACES=218, PETRI_TRANSITIONS=282} [2021-03-11 04:49:07,722 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 167 predicate places. [2021-03-11 04:49:07,722 INFO L480 AbstractCegarLoop]: Abstraction has has 218 places, 282 transitions, 7169 flow [2021-03-11 04:49:07,722 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:49:07,722 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:49:07,722 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:49:07,722 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-03-11 04:49:07,722 INFO L428 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:49:07,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:49:07,723 INFO L82 PathProgramCache]: Analyzing trace with hash -641338091, now seen corresponding path program 17 times [2021-03-11 04:49:07,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:49:07,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389776855] [2021-03-11 04:49:07,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:49:07,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:49:07,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:49:07,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:49:07,735 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:49:07,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:49:07,738 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 04:49:07,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 04:49:07,744 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 04:49:07,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 04:49:07,753 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 04:49:07,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 04:49:07,765 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 04:49:07,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 04:49:07,781 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 04:49:07,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 04:49:07,801 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:49:07,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:49:07,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:49:07,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389776855] [2021-03-11 04:49:07,823 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:49:07,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:49:07,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825200296] [2021-03-11 04:49:07,823 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:49:07,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:49:07,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:49:07,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:49:07,824 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:49:07,825 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 282 transitions, 7169 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:49:07,825 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:49:07,825 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:49:07,825 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:49:09,281 INFO L129 PetriNetUnfolder]: 755/7577 cut-off events. [2021-03-11 04:49:09,281 INFO L130 PetriNetUnfolder]: For 159021/161023 co-relation queries the response was YES. [2021-03-11 04:49:09,318 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39851 conditions, 7577 events. 755/7577 cut-off events. For 159021/161023 co-relation queries the response was YES. Maximal size of possible extension queue 1070. Compared 121430 event pairs, 354 based on Foata normal form. 33/7354 useless extension candidates. Maximal degree in co-relation 39761. Up to 1026 conditions per place. [2021-03-11 04:49:09,335 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 164 selfloop transitions, 149 changer transitions 3/337 dead transitions. [2021-03-11 04:49:09,335 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 337 transitions, 9060 flow [2021-03-11 04:49:09,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 04:49:09,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 04:49:09,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 04:49:09,337 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 04:49:09,337 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 04:49:09,337 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 04:49:09,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:49:09,337 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 04:49:09,338 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:49:09,338 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:49:09,338 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:49:09,338 INFO L185 Difference]: Start difference. First operand has 218 places, 282 transitions, 7169 flow. Second operand 9 states and 674 transitions. [2021-03-11 04:49:09,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 337 transitions, 9060 flow [2021-03-11 04:49:09,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 337 transitions, 8633 flow, removed 36 selfloop flow, removed 5 redundant places. [2021-03-11 04:49:09,753 INFO L241 Difference]: Finished difference. Result has 225 places, 297 transitions, 7647 flow [2021-03-11 04:49:09,754 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=6794, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7647, PETRI_PLACES=225, PETRI_TRANSITIONS=297} [2021-03-11 04:49:09,754 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 174 predicate places. [2021-03-11 04:49:09,754 INFO L480 AbstractCegarLoop]: Abstraction has has 225 places, 297 transitions, 7647 flow [2021-03-11 04:49:09,754 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:49:09,754 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:49:09,754 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:49:09,754 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-03-11 04:49:09,754 INFO L428 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:49:09,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:49:09,755 INFO L82 PathProgramCache]: Analyzing trace with hash -904378765, now seen corresponding path program 18 times [2021-03-11 04:49:09,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:49:09,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853434832] [2021-03-11 04:49:09,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:49:09,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:49:09,767 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:49:09,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:49:09,768 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:49:09,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:49:09,771 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 04:49:09,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 04:49:09,777 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 04:49:09,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 04:49:09,785 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 04:49:09,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 04:49:09,798 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 04:49:09,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 04:49:09,813 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 04:49:09,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 04:49:09,833 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:49:09,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:49:09,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:49:09,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853434832] [2021-03-11 04:49:09,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:49:09,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:49:09,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525568540] [2021-03-11 04:49:09,855 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:49:09,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:49:09,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:49:09,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:49:09,856 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:49:09,856 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 297 transitions, 7647 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:49:09,857 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:49:09,857 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:49:09,857 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:49:11,414 INFO L129 PetriNetUnfolder]: 754/7554 cut-off events. [2021-03-11 04:49:11,414 INFO L130 PetriNetUnfolder]: For 162736/164738 co-relation queries the response was YES. [2021-03-11 04:49:11,457 INFO L84 FinitePrefix]: Finished finitePrefix Result has 40028 conditions, 7554 events. 754/7554 cut-off events. For 162736/164738 co-relation queries the response was YES. Maximal size of possible extension queue 1070. Compared 120876 event pairs, 375 based on Foata normal form. 42/7353 useless extension candidates. Maximal degree in co-relation 39934. Up to 1088 conditions per place. [2021-03-11 04:49:11,478 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 110 selfloop transitions, 195 changer transitions 2/328 dead transitions. [2021-03-11 04:49:11,478 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 328 transitions, 8949 flow [2021-03-11 04:49:11,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 04:49:11,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 04:49:11,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 04:49:11,479 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 04:49:11,479 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 04:49:11,479 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 04:49:11,479 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:49:11,479 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 04:49:11,480 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:49:11,481 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:49:11,481 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:49:11,481 INFO L185 Difference]: Start difference. First operand has 225 places, 297 transitions, 7647 flow. Second operand 9 states and 674 transitions. [2021-03-11 04:49:11,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 328 transitions, 8949 flow [2021-03-11 04:49:12,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 328 transitions, 8638 flow, removed 46 selfloop flow, removed 5 redundant places. [2021-03-11 04:49:12,007 INFO L241 Difference]: Finished difference. Result has 232 places, 304 transitions, 8103 flow [2021-03-11 04:49:12,007 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=7358, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=188, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8103, PETRI_PLACES=232, PETRI_TRANSITIONS=304} [2021-03-11 04:49:12,007 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 181 predicate places. [2021-03-11 04:49:12,007 INFO L480 AbstractCegarLoop]: Abstraction has has 232 places, 304 transitions, 8103 flow [2021-03-11 04:49:12,007 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:49:12,007 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:49:12,007 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:49:12,007 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-03-11 04:49:12,008 INFO L428 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:49:12,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:49:12,008 INFO L82 PathProgramCache]: Analyzing trace with hash -1656486765, now seen corresponding path program 19 times [2021-03-11 04:49:12,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:49:12,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606149078] [2021-03-11 04:49:12,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:49:12,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:49:12,022 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:49:12,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:49:12,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:49:12,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:49:12,027 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:49:12,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 04:49:12,034 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 04:49:12,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 04:49:12,044 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 04:49:12,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 04:49:12,057 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 04:49:12,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 04:49:12,074 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 04:49:12,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 04:49:12,097 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:49:12,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:49:12,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:49:12,122 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606149078] [2021-03-11 04:49:12,122 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:49:12,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:49:12,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589441641] [2021-03-11 04:49:12,122 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:49:12,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:49:12,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:49:12,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:49:12,123 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:49:12,123 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 304 transitions, 8103 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:49:12,123 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:49:12,123 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:49:12,124 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:49:14,242 INFO L129 PetriNetUnfolder]: 783/9562 cut-off events. [2021-03-11 04:49:14,242 INFO L130 PetriNetUnfolder]: For 225034/227036 co-relation queries the response was YES. [2021-03-11 04:49:14,296 INFO L84 FinitePrefix]: Finished finitePrefix Result has 52073 conditions, 9562 events. 783/9562 cut-off events. For 225034/227036 co-relation queries the response was YES. Maximal size of possible extension queue 1481. Compared 161467 event pairs, 209 based on Foata normal form. 1/9234 useless extension candidates. Maximal degree in co-relation 51976. Up to 1904 conditions per place. [2021-03-11 04:49:14,320 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 466 selfloop transitions, 199 changer transitions 6/692 dead transitions. [2021-03-11 04:49:14,320 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 692 transitions, 20810 flow [2021-03-11 04:49:14,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 04:49:14,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 04:49:14,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 04:49:14,321 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 04:49:14,321 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 04:49:14,321 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 04:49:14,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:49:14,321 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 04:49:14,322 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:49:14,322 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:49:14,323 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:49:14,323 INFO L185 Difference]: Start difference. First operand has 232 places, 304 transitions, 8103 flow. Second operand 9 states and 674 transitions. [2021-03-11 04:49:14,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 692 transitions, 20810 flow [2021-03-11 04:49:14,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 692 transitions, 20050 flow, removed 56 selfloop flow, removed 4 redundant places. [2021-03-11 04:49:15,009 INFO L241 Difference]: Finished difference. Result has 242 places, 474 transitions, 13933 flow [2021-03-11 04:49:15,009 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=7798, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13933, PETRI_PLACES=242, PETRI_TRANSITIONS=474} [2021-03-11 04:49:15,010 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 191 predicate places. [2021-03-11 04:49:15,010 INFO L480 AbstractCegarLoop]: Abstraction has has 242 places, 474 transitions, 13933 flow [2021-03-11 04:49:15,010 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:49:15,010 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:49:15,010 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:49:15,010 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-03-11 04:49:15,010 INFO L428 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:49:15,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:49:15,010 INFO L82 PathProgramCache]: Analyzing trace with hash 89826405, now seen corresponding path program 20 times [2021-03-11 04:49:15,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:49:15,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928093932] [2021-03-11 04:49:15,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:49:15,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:49:15,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:49:15,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:49:15,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:49:15,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:49:15,028 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 04:49:15,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 04:49:15,035 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 04:49:15,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 04:49:15,043 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 04:49:15,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 04:49:15,057 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 04:49:15,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 04:49:15,083 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 04:49:15,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 04:49:15,107 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:49:15,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:49:15,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:49:15,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928093932] [2021-03-11 04:49:15,129 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:49:15,129 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:49:15,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187694925] [2021-03-11 04:49:15,130 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:49:15,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:49:15,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:49:15,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:49:15,130 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:49:15,131 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 474 transitions, 13933 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:49:15,131 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:49:15,131 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:49:15,131 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:49:17,732 INFO L129 PetriNetUnfolder]: 781/10162 cut-off events. [2021-03-11 04:49:17,732 INFO L130 PetriNetUnfolder]: For 233844/236091 co-relation queries the response was YES. [2021-03-11 04:49:17,794 INFO L84 FinitePrefix]: Finished finitePrefix Result has 53792 conditions, 10162 events. 781/10162 cut-off events. For 233844/236091 co-relation queries the response was YES. Maximal size of possible extension queue 1526. Compared 175096 event pairs, 497 based on Foata normal form. 42/9887 useless extension candidates. Maximal degree in co-relation 53689. Up to 1456 conditions per place. [2021-03-11 04:49:17,820 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 140 selfloop transitions, 342 changer transitions 2/505 dead transitions. [2021-03-11 04:49:17,820 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 505 transitions, 15594 flow [2021-03-11 04:49:17,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 04:49:17,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 04:49:17,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 04:49:17,822 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 04:49:17,822 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 04:49:17,822 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 04:49:17,822 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:49:17,822 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 04:49:17,823 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:49:17,823 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:49:17,823 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:49:17,823 INFO L185 Difference]: Start difference. First operand has 242 places, 474 transitions, 13933 flow. Second operand 9 states and 674 transitions. [2021-03-11 04:49:17,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 505 transitions, 15594 flow [2021-03-11 04:49:18,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 505 transitions, 15508 flow, removed 32 selfloop flow, removed 3 redundant places. [2021-03-11 04:49:18,712 INFO L241 Difference]: Finished difference. Result has 250 places, 483 transitions, 14904 flow [2021-03-11 04:49:18,712 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=13867, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=474, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=333, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=14904, PETRI_PLACES=250, PETRI_TRANSITIONS=483} [2021-03-11 04:49:18,712 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 199 predicate places. [2021-03-11 04:49:18,712 INFO L480 AbstractCegarLoop]: Abstraction has has 250 places, 483 transitions, 14904 flow [2021-03-11 04:49:18,712 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:49:18,712 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:49:18,713 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:49:18,713 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-03-11 04:49:18,713 INFO L428 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:49:18,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:49:18,713 INFO L82 PathProgramCache]: Analyzing trace with hash -168038235, now seen corresponding path program 21 times [2021-03-11 04:49:18,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:49:18,713 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783793628] [2021-03-11 04:49:18,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:49:18,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:49:18,725 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:49:18,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:49:18,726 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:49:18,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:49:18,730 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:49:18,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 04:49:18,735 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 04:49:18,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 04:49:18,744 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 04:49:18,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 04:49:18,757 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 04:49:18,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 04:49:18,773 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 04:49:18,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 04:49:18,795 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:49:18,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:49:18,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:49:18,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783793628] [2021-03-11 04:49:18,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:49:18,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:49:18,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119093063] [2021-03-11 04:49:18,817 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:49:18,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:49:18,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:49:18,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:49:18,819 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:49:18,820 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 483 transitions, 14904 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:49:18,820 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:49:18,820 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:49:18,820 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:49:21,715 INFO L129 PetriNetUnfolder]: 696/11359 cut-off events. [2021-03-11 04:49:21,716 INFO L130 PetriNetUnfolder]: For 274644/276891 co-relation queries the response was YES. [2021-03-11 04:49:21,777 INFO L84 FinitePrefix]: Finished finitePrefix Result has 61238 conditions, 11359 events. 696/11359 cut-off events. For 274644/276891 co-relation queries the response was YES. Maximal size of possible extension queue 1848. Compared 201834 event pairs, 324 based on Foata normal form. 20/10998 useless extension candidates. Maximal degree in co-relation 61133. Up to 1797 conditions per place. [2021-03-11 04:49:21,802 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 558 selfloop transitions, 217 changer transitions 7/803 dead transitions. [2021-03-11 04:49:21,802 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 803 transitions, 26435 flow [2021-03-11 04:49:21,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 04:49:21,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 04:49:21,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 04:49:21,803 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 04:49:21,803 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 04:49:21,804 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 04:49:21,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:49:21,804 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 04:49:21,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:49:21,805 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:49:21,805 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:49:21,805 INFO L185 Difference]: Start difference. First operand has 250 places, 483 transitions, 14904 flow. Second operand 9 states and 674 transitions. [2021-03-11 04:49:21,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 803 transitions, 26435 flow [2021-03-11 04:49:22,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 803 transitions, 25360 flow, removed 48 selfloop flow, removed 5 redundant places. [2021-03-11 04:49:22,796 INFO L241 Difference]: Finished difference. Result has 259 places, 620 transitions, 19622 flow [2021-03-11 04:49:22,796 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=14220, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=19622, PETRI_PLACES=259, PETRI_TRANSITIONS=620} [2021-03-11 04:49:22,796 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 208 predicate places. [2021-03-11 04:49:22,796 INFO L480 AbstractCegarLoop]: Abstraction has has 259 places, 620 transitions, 19622 flow [2021-03-11 04:49:22,796 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:49:22,796 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:49:22,796 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:49:22,796 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-03-11 04:49:22,797 INFO L428 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:49:22,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:49:22,797 INFO L82 PathProgramCache]: Analyzing trace with hash -1782512499, now seen corresponding path program 22 times [2021-03-11 04:49:22,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:49:22,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855822907] [2021-03-11 04:49:22,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:49:22,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:49:22,810 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:49:22,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:49:22,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:49:22,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:49:22,814 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 04:49:22,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 04:49:22,819 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 04:49:22,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 04:49:22,828 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 04:49:22,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 04:49:22,839 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 04:49:22,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 04:49:22,864 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 04:49:22,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 04:49:22,893 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:49:22,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:49:22,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:49:22,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855822907] [2021-03-11 04:49:22,916 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:49:22,916 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:49:22,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237503597] [2021-03-11 04:49:22,916 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:49:22,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:49:22,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:49:22,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:49:22,917 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:49:22,921 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 620 transitions, 19622 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:49:22,922 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:49:22,922 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:49:22,922 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:49:26,332 INFO L129 PetriNetUnfolder]: 696/11631 cut-off events. [2021-03-11 04:49:26,332 INFO L130 PetriNetUnfolder]: For 286179/288937 co-relation queries the response was YES. [2021-03-11 04:49:26,410 INFO L84 FinitePrefix]: Finished finitePrefix Result has 62684 conditions, 11631 events. 696/11631 cut-off events. For 286179/288937 co-relation queries the response was YES. Maximal size of possible extension queue 1855. Compared 207837 event pairs, 574 based on Foata normal form. 46/11273 useless extension candidates. Maximal degree in co-relation 62573. Up to 1701 conditions per place. [2021-03-11 04:49:26,439 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 164 selfloop transitions, 464 changer transitions 3/652 dead transitions. [2021-03-11 04:49:26,439 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 652 transitions, 21628 flow [2021-03-11 04:49:26,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 04:49:26,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 04:49:26,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 04:49:26,440 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 04:49:26,440 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 04:49:26,440 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 04:49:26,440 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:49:26,440 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 04:49:26,441 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:49:26,442 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:49:26,442 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:49:26,442 INFO L185 Difference]: Start difference. First operand has 259 places, 620 transitions, 19622 flow. Second operand 9 states and 674 transitions. [2021-03-11 04:49:26,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 652 transitions, 21628 flow [2021-03-11 04:49:27,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 652 transitions, 21237 flow, removed 159 selfloop flow, removed 3 redundant places. [2021-03-11 04:49:27,751 INFO L241 Difference]: Finished difference. Result has 267 places, 633 transitions, 20881 flow [2021-03-11 04:49:27,752 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=19243, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=620, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=451, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=20881, PETRI_PLACES=267, PETRI_TRANSITIONS=633} [2021-03-11 04:49:27,752 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 216 predicate places. [2021-03-11 04:49:27,752 INFO L480 AbstractCegarLoop]: Abstraction has has 267 places, 633 transitions, 20881 flow [2021-03-11 04:49:27,752 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:49:27,752 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:49:27,752 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:49:27,752 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-03-11 04:49:27,752 INFO L428 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:49:27,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:49:27,753 INFO L82 PathProgramCache]: Analyzing trace with hash 1310206195, now seen corresponding path program 23 times [2021-03-11 04:49:27,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:49:27,753 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484055062] [2021-03-11 04:49:27,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:49:27,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:49:27,765 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:49:27,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:49:27,766 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:49:27,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:49:27,769 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 04:49:27,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 04:49:27,774 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 04:49:27,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 04:49:27,782 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 04:49:27,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 04:49:27,792 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 04:49:27,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 04:49:27,807 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 04:49:27,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 04:49:27,833 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:49:27,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:49:27,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:49:27,852 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484055062] [2021-03-11 04:49:27,852 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:49:27,852 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:49:27,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679464741] [2021-03-11 04:49:27,853 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:49:27,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:49:27,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:49:27,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:49:27,853 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:49:27,854 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 633 transitions, 20881 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:49:27,854 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:49:27,854 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:49:27,854 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:49:31,362 INFO L129 PetriNetUnfolder]: 645/11963 cut-off events. [2021-03-11 04:49:31,362 INFO L130 PetriNetUnfolder]: For 308289/311047 co-relation queries the response was YES. [2021-03-11 04:49:31,432 INFO L84 FinitePrefix]: Finished finitePrefix Result has 65336 conditions, 11963 events. 645/11963 cut-off events. For 308289/311047 co-relation queries the response was YES. Maximal size of possible extension queue 1962. Compared 215973 event pairs, 485 based on Foata normal form. 36/11580 useless extension candidates. Maximal degree in co-relation 65223. Up to 1801 conditions per place. [2021-03-11 04:49:31,458 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 461 selfloop transitions, 321 changer transitions 9/812 dead transitions. [2021-03-11 04:49:31,458 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 812 transitions, 28373 flow [2021-03-11 04:49:31,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 04:49:31,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 04:49:31,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 04:49:31,459 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 04:49:31,459 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 04:49:31,459 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 04:49:31,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:49:31,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 04:49:31,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:49:31,460 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:49:31,460 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:49:31,460 INFO L185 Difference]: Start difference. First operand has 267 places, 633 transitions, 20881 flow. Second operand 9 states and 674 transitions. [2021-03-11 04:49:31,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 812 transitions, 28373 flow [2021-03-11 04:49:32,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 812 transitions, 27482 flow, removed 75 selfloop flow, removed 5 redundant places. [2021-03-11 04:49:32,878 INFO L241 Difference]: Finished difference. Result has 275 places, 710 transitions, 24086 flow [2021-03-11 04:49:32,879 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=20142, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=633, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=244, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=24086, PETRI_PLACES=275, PETRI_TRANSITIONS=710} [2021-03-11 04:49:32,880 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 224 predicate places. [2021-03-11 04:49:32,881 INFO L480 AbstractCegarLoop]: Abstraction has has 275 places, 710 transitions, 24086 flow [2021-03-11 04:49:32,881 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:49:32,881 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:49:32,881 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:49:32,881 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-03-11 04:49:32,881 INFO L428 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:49:32,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:49:32,881 INFO L82 PathProgramCache]: Analyzing trace with hash 1156136753, now seen corresponding path program 24 times [2021-03-11 04:49:32,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:49:32,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644602003] [2021-03-11 04:49:32,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:49:32,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:49:32,902 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:49:32,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:49:32,903 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:49:32,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:49:32,906 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 04:49:32,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 04:49:32,912 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 04:49:32,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 04:49:32,920 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 04:49:32,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 04:49:32,933 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 04:49:32,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 04:49:32,949 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 04:49:32,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 04:49:32,974 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:49:32,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:49:32,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:49:32,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644602003] [2021-03-11 04:49:32,998 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:49:32,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:49:32,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95657319] [2021-03-11 04:49:32,998 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:49:32,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:49:32,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:49:32,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:49:32,999 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:49:32,999 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 710 transitions, 24086 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:49:32,999 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:49:32,999 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:49:32,999 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:49:36,802 INFO L129 PetriNetUnfolder]: 644/12029 cut-off events. [2021-03-11 04:49:36,802 INFO L130 PetriNetUnfolder]: For 319599/322903 co-relation queries the response was YES. [2021-03-11 04:49:36,878 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66281 conditions, 12029 events. 644/12029 cut-off events. For 319599/322903 co-relation queries the response was YES. Maximal size of possible extension queue 1961. Compared 217535 event pairs, 588 based on Foata normal form. 50/11637 useless extension candidates. Maximal degree in co-relation 66164. Up to 1701 conditions per place. [2021-03-11 04:49:36,904 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 120 selfloop transitions, 585 changer transitions 2/728 dead transitions. [2021-03-11 04:49:36,904 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 728 transitions, 25863 flow [2021-03-11 04:49:36,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 04:49:36,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 04:49:36,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 04:49:36,905 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 04:49:36,906 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 04:49:36,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 04:49:36,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:49:36,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 04:49:36,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:49:36,907 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:49:36,907 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:49:36,907 INFO L185 Difference]: Start difference. First operand has 275 places, 710 transitions, 24086 flow. Second operand 9 states and 674 transitions. [2021-03-11 04:49:36,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 728 transitions, 25863 flow [2021-03-11 04:49:38,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 728 transitions, 25141 flow, removed 207 selfloop flow, removed 5 redundant places. [2021-03-11 04:49:38,453 INFO L241 Difference]: Finished difference. Result has 280 places, 712 transitions, 24632 flow [2021-03-11 04:49:38,453 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=23387, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=710, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=583, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=24632, PETRI_PLACES=280, PETRI_TRANSITIONS=712} [2021-03-11 04:49:38,454 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 229 predicate places. [2021-03-11 04:49:38,454 INFO L480 AbstractCegarLoop]: Abstraction has has 280 places, 712 transitions, 24632 flow [2021-03-11 04:49:38,454 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:49:38,454 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:49:38,454 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:49:38,455 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-03-11 04:49:38,455 INFO L428 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:49:38,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:49:38,455 INFO L82 PathProgramCache]: Analyzing trace with hash 1463632403, now seen corresponding path program 25 times [2021-03-11 04:49:38,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:49:38,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616275273] [2021-03-11 04:49:38,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:49:38,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:49:38,479 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:49:38,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:49:38,480 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:49:38,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:49:38,483 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 04:49:38,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 04:49:38,489 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 04:49:38,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 04:49:38,498 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 04:49:38,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 04:49:38,511 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 04:49:38,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 04:49:38,527 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 04:49:38,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 04:49:38,552 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:49:38,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:49:38,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:49:38,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616275273] [2021-03-11 04:49:38,572 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:49:38,572 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:49:38,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844212283] [2021-03-11 04:49:38,573 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:49:38,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:49:38,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:49:38,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:49:38,573 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:49:38,574 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 712 transitions, 24632 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:49:38,574 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:49:38,574 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:49:38,574 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:49:42,444 INFO L129 PetriNetUnfolder]: 630/12079 cut-off events. [2021-03-11 04:49:42,444 INFO L130 PetriNetUnfolder]: For 319819/323118 co-relation queries the response was YES. [2021-03-11 04:49:42,515 INFO L84 FinitePrefix]: Finished finitePrefix Result has 67012 conditions, 12079 events. 630/12079 cut-off events. For 319819/323118 co-relation queries the response was YES. Maximal size of possible extension queue 1976. Compared 218707 event pairs, 574 based on Foata normal form. 48/11685 useless extension candidates. Maximal degree in co-relation 66895. Up to 1701 conditions per place. [2021-03-11 04:49:42,539 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 255 selfloop transitions, 498 changer transitions 8/782 dead transitions. [2021-03-11 04:49:42,539 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 782 transitions, 28338 flow [2021-03-11 04:49:42,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 04:49:42,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 04:49:42,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 04:49:42,541 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 04:49:42,541 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 04:49:42,541 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 04:49:42,541 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:49:42,541 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 04:49:42,541 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:49:42,542 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:49:42,542 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:49:42,542 INFO L185 Difference]: Start difference. First operand has 280 places, 712 transitions, 24632 flow. Second operand 9 states and 674 transitions. [2021-03-11 04:49:42,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 782 transitions, 28338 flow [2021-03-11 04:49:43,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 782 transitions, 27249 flow, removed 14 selfloop flow, removed 6 redundant places. [2021-03-11 04:49:43,948 INFO L241 Difference]: Finished difference. Result has 286 places, 727 transitions, 25406 flow [2021-03-11 04:49:43,948 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=23587, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=712, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=483, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=25406, PETRI_PLACES=286, PETRI_TRANSITIONS=727} [2021-03-11 04:49:43,948 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 235 predicate places. [2021-03-11 04:49:43,948 INFO L480 AbstractCegarLoop]: Abstraction has has 286 places, 727 transitions, 25406 flow [2021-03-11 04:49:43,948 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:49:43,948 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:49:43,948 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:49:43,949 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-03-11 04:49:43,949 INFO L428 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:49:43,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:49:43,949 INFO L82 PathProgramCache]: Analyzing trace with hash 523874401, now seen corresponding path program 26 times [2021-03-11 04:49:43,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:49:43,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382563976] [2021-03-11 04:49:43,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:49:43,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:49:43,966 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:49:43,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:49:43,966 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:49:43,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:49:43,969 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 04:49:43,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 04:49:43,975 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 04:49:43,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 04:49:43,983 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 04:49:43,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 04:49:43,994 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 04:49:43,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 04:49:44,009 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 04:49:44,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 04:49:44,035 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:49:44,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:49:44,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:49:44,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382563976] [2021-03-11 04:49:44,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:49:44,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:49:44,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129187775] [2021-03-11 04:49:44,058 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:49:44,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:49:44,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:49:44,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:49:44,058 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:49:44,059 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 727 transitions, 25406 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:49:44,059 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:49:44,059 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:49:44,059 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:49:47,921 INFO L129 PetriNetUnfolder]: 627/12096 cut-off events. [2021-03-11 04:49:47,922 INFO L130 PetriNetUnfolder]: For 330705/334481 co-relation queries the response was YES. [2021-03-11 04:49:48,006 INFO L84 FinitePrefix]: Finished finitePrefix Result has 67471 conditions, 12096 events. 627/12096 cut-off events. For 330705/334481 co-relation queries the response was YES. Maximal size of possible extension queue 1978. Compared 219251 event pairs, 586 based on Foata normal form. 52/11699 useless extension candidates. Maximal degree in co-relation 67351. Up to 1701 conditions per place. [2021-03-11 04:49:48,034 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 176 selfloop transitions, 544 changer transitions 2/743 dead transitions. [2021-03-11 04:49:48,034 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 743 transitions, 27179 flow [2021-03-11 04:49:48,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 04:49:48,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 04:49:48,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 04:49:48,035 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 04:49:48,035 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 04:49:48,035 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 04:49:48,035 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:49:48,035 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 04:49:48,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:49:48,036 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:49:48,036 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:49:48,036 INFO L185 Difference]: Start difference. First operand has 286 places, 727 transitions, 25406 flow. Second operand 9 states and 674 transitions. [2021-03-11 04:49:48,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 743 transitions, 27179 flow [2021-03-11 04:49:49,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 743 transitions, 26304 flow, removed 72 selfloop flow, removed 10 redundant places. [2021-03-11 04:49:49,629 INFO L241 Difference]: Finished difference. Result has 286 places, 728 transitions, 25725 flow [2021-03-11 04:49:49,630 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=24577, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=727, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=543, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=25725, PETRI_PLACES=286, PETRI_TRANSITIONS=728} [2021-03-11 04:49:49,630 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 235 predicate places. [2021-03-11 04:49:49,630 INFO L480 AbstractCegarLoop]: Abstraction has has 286 places, 728 transitions, 25725 flow [2021-03-11 04:49:49,630 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:49:49,630 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:49:49,630 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:49:49,631 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-03-11 04:49:49,631 INFO L428 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:49:49,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:49:49,631 INFO L82 PathProgramCache]: Analyzing trace with hash 192148343, now seen corresponding path program 27 times [2021-03-11 04:49:49,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:49:49,631 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295621483] [2021-03-11 04:49:49,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:49:49,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:49:49,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:49:49,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:49:49,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:49:49,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:49:49,650 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 04:49:49,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 04:49:49,655 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 04:49:49,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 04:49:49,665 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 04:49:49,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 04:49:49,676 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 04:49:49,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 04:49:49,696 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 04:49:49,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 04:49:49,719 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:49:49,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:49:49,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:49:49,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295621483] [2021-03-11 04:49:49,741 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:49:49,741 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:49:49,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894527026] [2021-03-11 04:49:49,742 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:49:49,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:49:49,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:49:49,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:49:49,742 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:49:49,743 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 728 transitions, 25725 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:49:49,743 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:49:49,743 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:49:49,743 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:49:53,554 INFO L129 PetriNetUnfolder]: 615/12156 cut-off events. [2021-03-11 04:49:53,554 INFO L130 PetriNetUnfolder]: For 307437/311415 co-relation queries the response was YES. [2021-03-11 04:49:53,634 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66326 conditions, 12156 events. 615/12156 cut-off events. For 307437/311415 co-relation queries the response was YES. Maximal size of possible extension queue 1996. Compared 220941 event pairs, 574 based on Foata normal form. 52/11757 useless extension candidates. Maximal degree in co-relation 66210. Up to 1701 conditions per place. [2021-03-11 04:49:53,664 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 245 selfloop transitions, 512 changer transitions 3/781 dead transitions. [2021-03-11 04:49:53,664 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 781 transitions, 28882 flow [2021-03-11 04:49:53,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 04:49:53,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 04:49:53,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 04:49:53,665 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 04:49:53,665 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 04:49:53,665 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 04:49:53,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:49:53,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 04:49:53,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:49:53,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:49:53,666 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:49:53,666 INFO L185 Difference]: Start difference. First operand has 286 places, 728 transitions, 25725 flow. Second operand 9 states and 674 transitions. [2021-03-11 04:49:53,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 781 transitions, 28882 flow [2021-03-11 04:49:55,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 781 transitions, 27729 flow, removed 29 selfloop flow, removed 7 redundant places. [2021-03-11 04:49:55,303 INFO L241 Difference]: Finished difference. Result has 290 places, 750 transitions, 26546 flow [2021-03-11 04:49:55,303 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=24598, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=728, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=490, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=26546, PETRI_PLACES=290, PETRI_TRANSITIONS=750} [2021-03-11 04:49:55,303 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 239 predicate places. [2021-03-11 04:49:55,303 INFO L480 AbstractCegarLoop]: Abstraction has has 290 places, 750 transitions, 26546 flow [2021-03-11 04:49:55,304 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:49:55,304 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:49:55,304 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:49:55,304 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-03-11 04:49:55,304 INFO L428 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:49:55,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:49:55,304 INFO L82 PathProgramCache]: Analyzing trace with hash -196191129, now seen corresponding path program 28 times [2021-03-11 04:49:55,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:49:55,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136378870] [2021-03-11 04:49:55,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:49:55,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:49:55,315 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:49:55,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:49:55,315 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:49:55,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:49:55,318 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 04:49:55,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 04:49:55,324 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 04:49:55,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 04:49:55,331 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 04:49:55,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 04:49:55,342 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 04:49:55,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 04:49:55,360 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 04:49:55,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 04:49:55,381 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:49:55,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:49:55,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:49:55,401 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136378870] [2021-03-11 04:49:55,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:49:55,401 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:49:55,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977674979] [2021-03-11 04:49:55,401 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:49:55,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:49:55,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:49:55,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:49:55,402 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:49:55,402 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 750 transitions, 26546 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:49:55,402 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:49:55,402 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:49:55,402 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:49:59,409 INFO L129 PetriNetUnfolder]: 615/12143 cut-off events. [2021-03-11 04:49:59,410 INFO L130 PetriNetUnfolder]: For 306494/310472 co-relation queries the response was YES. [2021-03-11 04:49:59,477 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66367 conditions, 12143 events. 615/12143 cut-off events. For 306494/310472 co-relation queries the response was YES. Maximal size of possible extension queue 1994. Compared 220594 event pairs, 574 based on Foata normal form. 52/11746 useless extension candidates. Maximal degree in co-relation 66250. Up to 1701 conditions per place. [2021-03-11 04:49:59,501 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 149 selfloop transitions, 594 changer transitions 2/766 dead transitions. [2021-03-11 04:49:59,501 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 766 transitions, 28358 flow [2021-03-11 04:49:59,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 04:49:59,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 04:49:59,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 04:49:59,502 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 04:49:59,502 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 04:49:59,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 04:49:59,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:49:59,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 04:49:59,503 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:49:59,504 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:49:59,504 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:49:59,504 INFO L185 Difference]: Start difference. First operand has 290 places, 750 transitions, 26546 flow. Second operand 9 states and 674 transitions. [2021-03-11 04:49:59,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 766 transitions, 28358 flow [2021-03-11 04:50:01,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 766 transitions, 27256 flow, removed 70 selfloop flow, removed 7 redundant places. [2021-03-11 04:50:01,054 INFO L241 Difference]: Finished difference. Result has 293 places, 751 transitions, 26790 flow [2021-03-11 04:50:01,055 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=25460, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=750, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=592, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=26790, PETRI_PLACES=293, PETRI_TRANSITIONS=751} [2021-03-11 04:50:01,055 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 242 predicate places. [2021-03-11 04:50:01,055 INFO L480 AbstractCegarLoop]: Abstraction has has 293 places, 751 transitions, 26790 flow [2021-03-11 04:50:01,055 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:50:01,055 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:50:01,055 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:50:01,055 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-03-11 04:50:01,055 INFO L428 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:50:01,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:50:01,056 INFO L82 PathProgramCache]: Analyzing trace with hash 1540916827, now seen corresponding path program 29 times [2021-03-11 04:50:01,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:50:01,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336414113] [2021-03-11 04:50:01,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:50:01,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:50:01,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:50:01,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:50:01,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:50:01,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:50:01,079 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 04:50:01,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 04:50:01,085 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 04:50:01,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 04:50:01,095 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 04:50:01,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 04:50:01,109 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 04:50:01,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 04:50:01,128 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 04:50:01,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 04:50:01,152 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:50:01,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:50:01,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:50:01,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336414113] [2021-03-11 04:50:01,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:50:01,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:50:01,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715264571] [2021-03-11 04:50:01,173 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:50:01,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:50:01,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:50:01,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:50:01,174 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:50:01,174 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 751 transitions, 26790 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:50:01,174 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:50:01,174 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:50:01,174 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:50:02,396 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 27 [2021-03-11 04:50:05,224 INFO L129 PetriNetUnfolder]: 615/12135 cut-off events. [2021-03-11 04:50:05,224 INFO L130 PetriNetUnfolder]: For 307751/311729 co-relation queries the response was YES. [2021-03-11 04:50:05,303 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66500 conditions, 12135 events. 615/12135 cut-off events. For 307751/311729 co-relation queries the response was YES. Maximal size of possible extension queue 1992. Compared 220566 event pairs, 574 based on Foata normal form. 52/11739 useless extension candidates. Maximal degree in co-relation 66383. Up to 1701 conditions per place. [2021-03-11 04:50:05,331 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 148 selfloop transitions, 593 changer transitions 2/764 dead transitions. [2021-03-11 04:50:05,331 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 764 transitions, 28505 flow [2021-03-11 04:50:05,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 04:50:05,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 04:50:05,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 04:50:05,332 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 04:50:05,332 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 04:50:05,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 04:50:05,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:50:05,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 04:50:05,333 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:50:05,333 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:50:05,333 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:50:05,333 INFO L185 Difference]: Start difference. First operand has 293 places, 751 transitions, 26790 flow. Second operand 9 states and 674 transitions. [2021-03-11 04:50:05,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 764 transitions, 28505 flow [2021-03-11 04:50:06,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 764 transitions, 27389 flow, removed 11 selfloop flow, removed 7 redundant places. [2021-03-11 04:50:06,947 INFO L241 Difference]: Finished difference. Result has 295 places, 753 transitions, 26941 flow [2021-03-11 04:50:06,947 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=25684, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=751, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=590, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=26941, PETRI_PLACES=295, PETRI_TRANSITIONS=753} [2021-03-11 04:50:06,948 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 244 predicate places. [2021-03-11 04:50:06,948 INFO L480 AbstractCegarLoop]: Abstraction has has 295 places, 753 transitions, 26941 flow [2021-03-11 04:50:06,948 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:50:06,948 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:50:06,948 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:50:06,948 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-03-11 04:50:06,948 INFO L428 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:50:06,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:50:06,948 INFO L82 PathProgramCache]: Analyzing trace with hash -1249153875, now seen corresponding path program 30 times [2021-03-11 04:50:06,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:50:06,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304781143] [2021-03-11 04:50:06,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:50:06,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:50:06,961 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:50:06,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:50:06,961 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:50:06,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:50:06,964 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 04:50:06,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 04:50:06,970 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 04:50:06,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 04:50:06,978 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 04:50:06,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 04:50:06,992 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 04:50:06,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 04:50:07,010 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 04:50:07,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 04:50:07,035 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:50:07,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:50:07,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:50:07,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304781143] [2021-03-11 04:50:07,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:50:07,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:50:07,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260845214] [2021-03-11 04:50:07,055 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:50:07,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:50:07,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:50:07,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:50:07,057 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:50:07,058 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 753 transitions, 26941 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:50:07,058 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:50:07,058 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:50:07,058 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:50:11,008 INFO L129 PetriNetUnfolder]: 615/12127 cut-off events. [2021-03-11 04:50:11,009 INFO L130 PetriNetUnfolder]: For 306733/310716 co-relation queries the response was YES. [2021-03-11 04:50:11,081 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66554 conditions, 12127 events. 615/12127 cut-off events. For 306733/310716 co-relation queries the response was YES. Maximal size of possible extension queue 1996. Compared 220399 event pairs, 574 based on Foata normal form. 54/11735 useless extension candidates. Maximal degree in co-relation 66438. Up to 1701 conditions per place. [2021-03-11 04:50:11,106 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 142 selfloop transitions, 597 changer transitions 3/763 dead transitions. [2021-03-11 04:50:11,106 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 763 transitions, 28561 flow [2021-03-11 04:50:11,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 04:50:11,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 04:50:11,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 04:50:11,107 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 04:50:11,107 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 04:50:11,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 04:50:11,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:50:11,108 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 04:50:11,108 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:50:11,109 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:50:11,109 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:50:11,109 INFO L185 Difference]: Start difference. First operand has 295 places, 753 transitions, 26941 flow. Second operand 9 states and 674 transitions. [2021-03-11 04:50:11,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 763 transitions, 28561 flow [2021-03-11 04:50:12,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 763 transitions, 27374 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-03-11 04:50:12,674 INFO L241 Difference]: Finished difference. Result has 298 places, 751 transitions, 26898 flow [2021-03-11 04:50:12,674 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=25765, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=753, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=597, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=26898, PETRI_PLACES=298, PETRI_TRANSITIONS=751} [2021-03-11 04:50:12,674 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 247 predicate places. [2021-03-11 04:50:12,675 INFO L480 AbstractCegarLoop]: Abstraction has has 298 places, 751 transitions, 26898 flow [2021-03-11 04:50:12,675 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:50:12,675 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:50:12,675 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:50:12,675 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-03-11 04:50:12,675 INFO L428 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:50:12,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:50:12,675 INFO L82 PathProgramCache]: Analyzing trace with hash 168990493, now seen corresponding path program 31 times [2021-03-11 04:50:12,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:50:12,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670725629] [2021-03-11 04:50:12,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:50:12,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:50:12,687 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:50:12,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:50:12,688 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:50:12,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:50:12,691 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 04:50:12,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 04:50:12,696 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 04:50:12,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 04:50:12,709 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 04:50:12,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 04:50:12,724 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 04:50:12,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 04:50:12,748 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 04:50:12,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 04:50:12,780 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:50:12,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:50:12,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:50:12,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670725629] [2021-03-11 04:50:12,802 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:50:12,802 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:50:12,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058869995] [2021-03-11 04:50:12,802 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:50:12,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:50:12,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:50:12,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:50:12,803 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:50:12,803 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 751 transitions, 26898 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:50:12,803 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:50:12,803 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:50:12,804 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:50:16,860 INFO L129 PetriNetUnfolder]: 615/12117 cut-off events. [2021-03-11 04:50:16,860 INFO L130 PetriNetUnfolder]: For 306490/310473 co-relation queries the response was YES. [2021-03-11 04:50:16,930 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66519 conditions, 12117 events. 615/12117 cut-off events. For 306490/310473 co-relation queries the response was YES. Maximal size of possible extension queue 1995. Compared 220171 event pairs, 574 based on Foata normal form. 54/11726 useless extension candidates. Maximal degree in co-relation 66402. Up to 1701 conditions per place. [2021-03-11 04:50:16,956 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 129 selfloop transitions, 606 changer transitions 4/760 dead transitions. [2021-03-11 04:50:16,957 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 760 transitions, 28503 flow [2021-03-11 04:50:16,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 04:50:16,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 04:50:16,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 673 transitions. [2021-03-11 04:50:16,958 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9347222222222222 [2021-03-11 04:50:16,958 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 673 transitions. [2021-03-11 04:50:16,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 673 transitions. [2021-03-11 04:50:16,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:50:16,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 673 transitions. [2021-03-11 04:50:16,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.77777777777777) internal successors, (673), 9 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:50:16,959 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:50:16,959 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:50:16,959 INFO L185 Difference]: Start difference. First operand has 298 places, 751 transitions, 26898 flow. Second operand 9 states and 673 transitions. [2021-03-11 04:50:16,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 760 transitions, 28503 flow [2021-03-11 04:50:18,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 760 transitions, 27301 flow, removed 10 selfloop flow, removed 7 redundant places. [2021-03-11 04:50:18,560 INFO L241 Difference]: Finished difference. Result has 300 places, 748 transitions, 26822 flow [2021-03-11 04:50:18,561 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=25705, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=751, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=606, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=26822, PETRI_PLACES=300, PETRI_TRANSITIONS=748} [2021-03-11 04:50:18,561 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 249 predicate places. [2021-03-11 04:50:18,561 INFO L480 AbstractCegarLoop]: Abstraction has has 300 places, 748 transitions, 26822 flow [2021-03-11 04:50:18,561 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:50:18,561 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:50:18,561 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:50:18,562 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-03-11 04:50:18,562 INFO L428 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:50:18,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:50:18,562 INFO L82 PathProgramCache]: Analyzing trace with hash -124296357, now seen corresponding path program 32 times [2021-03-11 04:50:18,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:50:18,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881223243] [2021-03-11 04:50:18,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:50:18,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:50:18,573 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:50:18,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:50:18,573 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:50:18,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:50:18,576 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 04:50:18,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 04:50:18,582 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 04:50:18,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 04:50:18,590 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 04:50:18,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 04:50:18,601 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 04:50:18,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 04:50:18,615 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 04:50:18,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 04:50:18,635 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:50:18,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:50:18,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:50:18,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881223243] [2021-03-11 04:50:18,658 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:50:18,658 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:50:18,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959891267] [2021-03-11 04:50:18,659 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:50:18,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:50:18,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:50:18,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:50:18,659 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:50:18,659 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 748 transitions, 26822 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:50:18,659 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:50:18,660 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:50:18,660 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:50:22,640 INFO L129 PetriNetUnfolder]: 615/12102 cut-off events. [2021-03-11 04:50:22,640 INFO L130 PetriNetUnfolder]: For 306161/310144 co-relation queries the response was YES. [2021-03-11 04:50:22,725 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66424 conditions, 12102 events. 615/12102 cut-off events. For 306161/310144 co-relation queries the response was YES. Maximal size of possible extension queue 1994. Compared 219823 event pairs, 574 based on Foata normal form. 54/11712 useless extension candidates. Maximal degree in co-relation 66307. Up to 1701 conditions per place. [2021-03-11 04:50:22,752 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 217 selfloop transitions, 524 changer transitions 2/764 dead transitions. [2021-03-11 04:50:22,752 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 764 transitions, 28625 flow [2021-03-11 04:50:22,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 04:50:22,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 04:50:22,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 04:50:22,753 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 04:50:22,753 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 04:50:22,753 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 04:50:22,753 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:50:22,753 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 04:50:22,754 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:50:22,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:50:22,755 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:50:22,755 INFO L185 Difference]: Start difference. First operand has 300 places, 748 transitions, 26822 flow. Second operand 9 states and 674 transitions. [2021-03-11 04:50:22,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 764 transitions, 28625 flow [2021-03-11 04:50:24,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 764 transitions, 27399 flow, removed 7 selfloop flow, removed 7 redundant places. [2021-03-11 04:50:24,375 INFO L241 Difference]: Finished difference. Result has 302 places, 753 transitions, 26868 flow [2021-03-11 04:50:24,376 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=25606, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=748, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=518, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=26868, PETRI_PLACES=302, PETRI_TRANSITIONS=753} [2021-03-11 04:50:24,376 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 251 predicate places. [2021-03-11 04:50:24,376 INFO L480 AbstractCegarLoop]: Abstraction has has 302 places, 753 transitions, 26868 flow [2021-03-11 04:50:24,376 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:50:24,376 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:50:24,376 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:50:24,376 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-03-11 04:50:24,376 INFO L428 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:50:24,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:50:24,377 INFO L82 PathProgramCache]: Analyzing trace with hash 1098121723, now seen corresponding path program 33 times [2021-03-11 04:50:24,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:50:24,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523751577] [2021-03-11 04:50:24,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:50:24,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:50:24,389 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:50:24,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:50:24,389 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:50:24,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:50:24,392 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 04:50:24,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 04:50:24,398 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 04:50:24,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 04:50:24,406 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 04:50:24,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 04:50:24,416 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 04:50:24,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 04:50:24,432 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 04:50:24,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 04:50:24,452 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:50:24,452 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:50:24,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:50:24,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523751577] [2021-03-11 04:50:24,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:50:24,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:50:24,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867599564] [2021-03-11 04:50:24,471 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:50:24,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:50:24,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:50:24,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:50:24,472 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:50:24,472 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 753 transitions, 26868 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:50:24,472 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:50:24,472 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:50:24,472 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:50:28,302 INFO L129 PetriNetUnfolder]: 615/12093 cut-off events. [2021-03-11 04:50:28,302 INFO L130 PetriNetUnfolder]: For 308368/312351 co-relation queries the response was YES. [2021-03-11 04:50:28,384 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66496 conditions, 12093 events. 615/12093 cut-off events. For 308368/312351 co-relation queries the response was YES. Maximal size of possible extension queue 1992. Compared 219531 event pairs, 574 based on Foata normal form. 54/11704 useless extension candidates. Maximal degree in co-relation 66378. Up to 1701 conditions per place. [2021-03-11 04:50:28,412 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 215 selfloop transitions, 524 changer transitions 2/762 dead transitions. [2021-03-11 04:50:28,412 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 762 transitions, 28450 flow [2021-03-11 04:50:28,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 04:50:28,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 04:50:28,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 04:50:28,413 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 04:50:28,413 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 04:50:28,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 04:50:28,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:50:28,413 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 04:50:28,414 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:50:28,414 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:50:28,414 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:50:28,415 INFO L185 Difference]: Start difference. First operand has 302 places, 753 transitions, 26868 flow. Second operand 9 states and 674 transitions. [2021-03-11 04:50:28,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 762 transitions, 28450 flow [2021-03-11 04:50:30,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 762 transitions, 27449 flow, removed 7 selfloop flow, removed 5 redundant places. [2021-03-11 04:50:30,093 INFO L241 Difference]: Finished difference. Result has 305 places, 751 transitions, 26849 flow [2021-03-11 04:50:30,094 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=25877, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=753, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=524, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=26849, PETRI_PLACES=305, PETRI_TRANSITIONS=751} [2021-03-11 04:50:30,094 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 254 predicate places. [2021-03-11 04:50:30,094 INFO L480 AbstractCegarLoop]: Abstraction has has 305 places, 751 transitions, 26849 flow [2021-03-11 04:50:30,094 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:50:30,094 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:50:30,094 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:50:30,095 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-03-11 04:50:30,095 INFO L428 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:50:30,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:50:30,095 INFO L82 PathProgramCache]: Analyzing trace with hash 2048159377, now seen corresponding path program 34 times [2021-03-11 04:50:30,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:50:30,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615134767] [2021-03-11 04:50:30,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:50:30,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:50:30,107 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:50:30,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:50:30,107 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:50:30,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:50:30,110 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 04:50:30,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 04:50:30,125 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 04:50:30,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 04:50:30,134 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 04:50:30,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 04:50:30,147 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 04:50:30,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 04:50:30,172 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 04:50:30,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 04:50:30,195 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:50:30,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:50:30,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:50:30,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615134767] [2021-03-11 04:50:30,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:50:30,215 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:50:30,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969777477] [2021-03-11 04:50:30,215 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:50:30,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:50:30,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:50:30,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:50:30,216 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:50:30,216 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 751 transitions, 26849 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:50:30,216 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:50:30,216 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:50:30,216 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:50:34,154 INFO L129 PetriNetUnfolder]: 615/12084 cut-off events. [2021-03-11 04:50:34,154 INFO L130 PetriNetUnfolder]: For 308167/312150 co-relation queries the response was YES. [2021-03-11 04:50:34,221 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66584 conditions, 12084 events. 615/12084 cut-off events. For 308167/312150 co-relation queries the response was YES. Maximal size of possible extension queue 1990. Compared 219360 event pairs, 574 based on Foata normal form. 54/11696 useless extension candidates. Maximal degree in co-relation 66466. Up to 1701 conditions per place. [2021-03-11 04:50:34,244 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 194 selfloop transitions, 542 changer transitions 3/760 dead transitions. [2021-03-11 04:50:34,244 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 760 transitions, 28427 flow [2021-03-11 04:50:34,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 04:50:34,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 04:50:34,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 04:50:34,245 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 04:50:34,245 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 04:50:34,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 04:50:34,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:50:34,245 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 04:50:34,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:50:34,246 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:50:34,246 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:50:34,246 INFO L185 Difference]: Start difference. First operand has 305 places, 751 transitions, 26849 flow. Second operand 9 states and 674 transitions. [2021-03-11 04:50:34,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 760 transitions, 28427 flow [2021-03-11 04:50:35,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 760 transitions, 27372 flow, removed 9 selfloop flow, removed 7 redundant places. [2021-03-11 04:50:35,793 INFO L241 Difference]: Finished difference. Result has 306 places, 748 transitions, 26774 flow [2021-03-11 04:50:35,794 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=25804, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=751, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=542, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=26774, PETRI_PLACES=306, PETRI_TRANSITIONS=748} [2021-03-11 04:50:35,794 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 255 predicate places. [2021-03-11 04:50:35,794 INFO L480 AbstractCegarLoop]: Abstraction has has 306 places, 748 transitions, 26774 flow [2021-03-11 04:50:35,794 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:50:35,794 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:50:35,794 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:50:35,794 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-03-11 04:50:35,794 INFO L428 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:50:35,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:50:35,795 INFO L82 PathProgramCache]: Analyzing trace with hash -893575517, now seen corresponding path program 35 times [2021-03-11 04:50:35,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:50:35,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894973468] [2021-03-11 04:50:35,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:50:35,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:50:35,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:50:35,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:50:35,806 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:50:35,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:50:35,809 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 04:50:35,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 04:50:35,814 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 04:50:35,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 04:50:35,823 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 04:50:35,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 04:50:35,837 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 04:50:35,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 04:50:35,862 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 04:50:35,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 04:50:35,886 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:50:35,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:50:35,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:50:35,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894973468] [2021-03-11 04:50:35,909 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:50:35,909 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:50:35,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064556599] [2021-03-11 04:50:35,909 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:50:35,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:50:35,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:50:35,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:50:35,910 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:50:35,910 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 748 transitions, 26774 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:50:35,910 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:50:35,910 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:50:35,910 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:50:39,806 INFO L129 PetriNetUnfolder]: 615/12071 cut-off events. [2021-03-11 04:50:39,806 INFO L130 PetriNetUnfolder]: For 307654/311637 co-relation queries the response was YES. [2021-03-11 04:50:39,879 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66517 conditions, 12071 events. 615/12071 cut-off events. For 307654/311637 co-relation queries the response was YES. Maximal size of possible extension queue 1988. Compared 219130 event pairs, 574 based on Foata normal form. 54/11684 useless extension candidates. Maximal degree in co-relation 66400. Up to 1701 conditions per place. [2021-03-11 04:50:39,906 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 209 selfloop transitions, 526 changer transitions 2/758 dead transitions. [2021-03-11 04:50:39,906 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 758 transitions, 28381 flow [2021-03-11 04:50:39,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 04:50:39,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 04:50:39,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 04:50:39,907 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 04:50:39,907 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 04:50:39,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 04:50:39,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:50:39,907 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 04:50:39,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:50:39,908 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:50:39,908 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:50:39,908 INFO L185 Difference]: Start difference. First operand has 306 places, 748 transitions, 26774 flow. Second operand 9 states and 674 transitions. [2021-03-11 04:50:39,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 758 transitions, 28381 flow [2021-03-11 04:50:41,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 758 transitions, 27297 flow, removed 10 selfloop flow, removed 7 redundant places. [2021-03-11 04:50:41,471 INFO L241 Difference]: Finished difference. Result has 307 places, 747 transitions, 26724 flow [2021-03-11 04:50:41,472 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=25702, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=748, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=525, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=26724, PETRI_PLACES=307, PETRI_TRANSITIONS=747} [2021-03-11 04:50:41,472 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 256 predicate places. [2021-03-11 04:50:41,472 INFO L480 AbstractCegarLoop]: Abstraction has has 307 places, 747 transitions, 26724 flow [2021-03-11 04:50:41,472 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:50:41,472 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:50:41,472 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:50:41,472 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-03-11 04:50:41,472 INFO L428 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:50:41,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:50:41,472 INFO L82 PathProgramCache]: Analyzing trace with hash 827302671, now seen corresponding path program 36 times [2021-03-11 04:50:41,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:50:41,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358208108] [2021-03-11 04:50:41,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:50:41,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:50:41,483 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:50:41,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:50:41,484 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:50:41,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:50:41,487 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 04:50:41,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 04:50:41,492 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 04:50:41,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 04:50:41,500 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 04:50:41,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 04:50:41,511 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 04:50:41,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 04:50:41,536 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 04:50:41,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 04:50:41,557 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:50:41,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:50:41,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:50:41,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358208108] [2021-03-11 04:50:41,576 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:50:41,576 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:50:41,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952725757] [2021-03-11 04:50:41,576 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:50:41,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:50:41,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:50:41,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:50:41,577 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:50:41,577 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 747 transitions, 26724 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:50:41,577 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:50:41,577 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:50:41,577 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:50:45,443 INFO L129 PetriNetUnfolder]: 615/12060 cut-off events. [2021-03-11 04:50:45,443 INFO L130 PetriNetUnfolder]: For 307016/310994 co-relation queries the response was YES. [2021-03-11 04:50:45,649 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66454 conditions, 12060 events. 615/12060 cut-off events. For 307016/310994 co-relation queries the response was YES. Maximal size of possible extension queue 1980. Compared 218902 event pairs, 574 based on Foata normal form. 52/11671 useless extension candidates. Maximal degree in co-relation 66337. Up to 1701 conditions per place. [2021-03-11 04:50:45,675 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 213 selfloop transitions, 520 changer transitions 2/756 dead transitions. [2021-03-11 04:50:45,675 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 756 transitions, 28294 flow [2021-03-11 04:50:45,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 04:50:45,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 04:50:45,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 04:50:45,676 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 04:50:45,676 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 04:50:45,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 04:50:45,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:50:45,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 04:50:45,677 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:50:45,678 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:50:45,678 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:50:45,678 INFO L185 Difference]: Start difference. First operand has 307 places, 747 transitions, 26724 flow. Second operand 9 states and 674 transitions. [2021-03-11 04:50:45,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 756 transitions, 28294 flow [2021-03-11 04:50:47,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 756 transitions, 27646 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-03-11 04:50:47,167 INFO L241 Difference]: Finished difference. Result has 310 places, 745 transitions, 27051 flow [2021-03-11 04:50:47,167 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=26086, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=747, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=520, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=27051, PETRI_PLACES=310, PETRI_TRANSITIONS=745} [2021-03-11 04:50:47,167 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 259 predicate places. [2021-03-11 04:50:47,167 INFO L480 AbstractCegarLoop]: Abstraction has has 310 places, 745 transitions, 27051 flow [2021-03-11 04:50:47,167 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:50:47,168 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:50:47,168 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:50:47,168 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-03-11 04:50:47,168 INFO L428 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:50:47,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:50:47,168 INFO L82 PathProgramCache]: Analyzing trace with hash -1257408627, now seen corresponding path program 37 times [2021-03-11 04:50:47,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:50:47,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348888346] [2021-03-11 04:50:47,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:50:47,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:50:47,179 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:50:47,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:50:47,180 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:50:47,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:50:47,183 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 04:50:47,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 04:50:47,188 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 04:50:47,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 04:50:47,197 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 04:50:47,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 04:50:47,207 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 04:50:47,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 04:50:47,222 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 04:50:47,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 04:50:47,244 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:50:47,244 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:50:47,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:50:47,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348888346] [2021-03-11 04:50:47,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:50:47,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:50:47,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290663092] [2021-03-11 04:50:47,267 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:50:47,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:50:47,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:50:47,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:50:47,268 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:50:47,268 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 745 transitions, 27051 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:50:47,268 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:50:47,268 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:50:47,268 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:50:51,105 INFO L129 PetriNetUnfolder]: 615/12049 cut-off events. [2021-03-11 04:50:51,105 INFO L130 PetriNetUnfolder]: For 309926/313904 co-relation queries the response was YES. [2021-03-11 04:50:51,173 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66820 conditions, 12049 events. 615/12049 cut-off events. For 309926/313904 co-relation queries the response was YES. Maximal size of possible extension queue 1978. Compared 218558 event pairs, 574 based on Foata normal form. 52/11661 useless extension candidates. Maximal degree in co-relation 66703. Up to 1701 conditions per place. [2021-03-11 04:50:51,197 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 202 selfloop transitions, 529 changer transitions 2/754 dead transitions. [2021-03-11 04:50:51,198 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 754 transitions, 28617 flow [2021-03-11 04:50:51,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 04:50:51,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 04:50:51,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 04:50:51,204 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 04:50:51,204 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 04:50:51,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 04:50:51,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:50:51,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 04:50:51,205 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:50:51,205 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:50:51,205 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:50:51,205 INFO L185 Difference]: Start difference. First operand has 310 places, 745 transitions, 27051 flow. Second operand 9 states and 674 transitions. [2021-03-11 04:50:51,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 754 transitions, 28617 flow [2021-03-11 04:50:52,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 754 transitions, 27576 flow, removed 7 selfloop flow, removed 7 redundant places. [2021-03-11 04:50:52,795 INFO L241 Difference]: Finished difference. Result has 311 places, 743 transitions, 26995 flow [2021-03-11 04:50:52,795 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=26020, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=745, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=529, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=26995, PETRI_PLACES=311, PETRI_TRANSITIONS=743} [2021-03-11 04:50:52,795 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 260 predicate places. [2021-03-11 04:50:52,796 INFO L480 AbstractCegarLoop]: Abstraction has has 311 places, 743 transitions, 26995 flow [2021-03-11 04:50:52,796 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:50:52,796 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:50:52,796 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:50:52,796 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-03-11 04:50:52,796 INFO L428 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:50:52,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:50:52,796 INFO L82 PathProgramCache]: Analyzing trace with hash 2033707681, now seen corresponding path program 38 times [2021-03-11 04:50:52,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:50:52,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482630512] [2021-03-11 04:50:52,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:50:52,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:50:52,807 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:50:52,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:50:52,807 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:50:52,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:50:52,810 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 04:50:52,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 04:50:52,817 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 04:50:52,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 04:50:52,824 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 04:50:52,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 04:50:52,839 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 04:50:52,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 04:50:52,856 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 04:50:52,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 04:50:52,877 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:50:52,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:50:52,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:50:52,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482630512] [2021-03-11 04:50:52,895 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:50:52,895 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:50:52,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018401408] [2021-03-11 04:50:52,895 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:50:52,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:50:52,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:50:52,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:50:52,896 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:50:52,896 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 743 transitions, 26995 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:50:52,896 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:50:52,896 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:50:52,896 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:50:56,695 INFO L129 PetriNetUnfolder]: 615/12038 cut-off events. [2021-03-11 04:50:56,695 INFO L130 PetriNetUnfolder]: For 309268/313251 co-relation queries the response was YES. [2021-03-11 04:50:56,767 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66777 conditions, 12038 events. 615/12038 cut-off events. For 309268/313251 co-relation queries the response was YES. Maximal size of possible extension queue 1982. Compared 218356 event pairs, 574 based on Foata normal form. 54/11654 useless extension candidates. Maximal degree in co-relation 66661. Up to 1701 conditions per place. [2021-03-11 04:50:56,792 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 225 selfloop transitions, 504 changer transitions 2/752 dead transitions. [2021-03-11 04:50:56,792 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 752 transitions, 28557 flow [2021-03-11 04:50:56,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 04:50:56,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 04:50:56,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 04:50:56,793 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 04:50:56,793 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 04:50:56,793 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 04:50:56,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:50:56,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 04:50:56,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:50:56,794 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:50:56,794 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:50:56,794 INFO L185 Difference]: Start difference. First operand has 311 places, 743 transitions, 26995 flow. Second operand 9 states and 674 transitions. [2021-03-11 04:50:56,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 752 transitions, 28557 flow [2021-03-11 04:50:58,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 752 transitions, 27520 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-03-11 04:50:58,349 INFO L241 Difference]: Finished difference. Result has 313 places, 741 transitions, 26896 flow [2021-03-11 04:50:58,349 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=25968, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=743, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=504, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=26896, PETRI_PLACES=313, PETRI_TRANSITIONS=741} [2021-03-11 04:50:58,349 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 262 predicate places. [2021-03-11 04:50:58,349 INFO L480 AbstractCegarLoop]: Abstraction has has 313 places, 741 transitions, 26896 flow [2021-03-11 04:50:58,349 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:50:58,349 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:50:58,349 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:50:58,349 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-03-11 04:50:58,350 INFO L428 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:50:58,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:50:58,350 INFO L82 PathProgramCache]: Analyzing trace with hash -445664607, now seen corresponding path program 39 times [2021-03-11 04:50:58,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:50:58,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908901857] [2021-03-11 04:50:58,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:50:58,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:50:58,361 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:50:58,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:50:58,362 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:50:58,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:50:58,365 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 04:50:58,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 04:50:58,370 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 04:50:58,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 04:50:58,378 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 04:50:58,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 04:50:58,389 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 04:50:58,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 04:50:58,405 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 04:50:58,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 04:50:58,426 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:50:58,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:50:58,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:50:58,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908901857] [2021-03-11 04:50:58,445 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:50:58,445 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:50:58,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749099475] [2021-03-11 04:50:58,446 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:50:58,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:50:58,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:50:58,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:50:58,450 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:50:58,450 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 741 transitions, 26896 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:50:58,450 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:50:58,450 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:50:58,450 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:51:02,230 INFO L129 PetriNetUnfolder]: 615/12029 cut-off events. [2021-03-11 04:51:02,230 INFO L130 PetriNetUnfolder]: For 308987/312970 co-relation queries the response was YES. [2021-03-11 04:51:02,303 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66745 conditions, 12029 events. 615/12029 cut-off events. For 308987/312970 co-relation queries the response was YES. Maximal size of possible extension queue 1980. Compared 218148 event pairs, 574 based on Foata normal form. 54/11646 useless extension candidates. Maximal degree in co-relation 66629. Up to 1701 conditions per place. [2021-03-11 04:51:02,329 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 235 selfloop transitions, 505 changer transitions 2/763 dead transitions. [2021-03-11 04:51:02,329 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 763 transitions, 28936 flow [2021-03-11 04:51:02,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 04:51:02,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 04:51:02,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 04:51:02,330 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 04:51:02,330 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 04:51:02,330 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 04:51:02,330 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:51:02,331 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 04:51:02,331 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:51:02,331 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:51:02,332 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:51:02,332 INFO L185 Difference]: Start difference. First operand has 313 places, 741 transitions, 26896 flow. Second operand 9 states and 674 transitions. [2021-03-11 04:51:02,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 763 transitions, 28936 flow [2021-03-11 04:51:03,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 763 transitions, 27894 flow, removed 9 selfloop flow, removed 6 redundant places. [2021-03-11 04:51:03,904 INFO L241 Difference]: Finished difference. Result has 316 places, 752 transitions, 27303 flow [2021-03-11 04:51:03,904 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=25890, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=741, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=492, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=27303, PETRI_PLACES=316, PETRI_TRANSITIONS=752} [2021-03-11 04:51:03,904 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 265 predicate places. [2021-03-11 04:51:03,904 INFO L480 AbstractCegarLoop]: Abstraction has has 316 places, 752 transitions, 27303 flow [2021-03-11 04:51:03,904 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:51:03,904 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:51:03,904 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:51:03,904 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-03-11 04:51:03,905 INFO L428 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:51:03,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:51:03,905 INFO L82 PathProgramCache]: Analyzing trace with hash 195729699, now seen corresponding path program 40 times [2021-03-11 04:51:03,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:51:03,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825949286] [2021-03-11 04:51:03,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:51:03,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:51:03,917 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:51:03,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:51:03,918 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:51:03,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:51:03,921 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 04:51:03,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 04:51:03,927 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 04:51:03,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 04:51:03,936 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 04:51:03,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 04:51:03,947 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 04:51:03,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 04:51:03,962 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 04:51:03,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 04:51:03,987 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:51:03,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:51:04,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:51:04,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825949286] [2021-03-11 04:51:04,007 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:51:04,007 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:51:04,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618785426] [2021-03-11 04:51:04,007 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:51:04,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:51:04,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:51:04,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:51:04,008 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:51:04,008 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 752 transitions, 27303 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:51:04,008 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:51:04,008 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:51:04,008 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:51:07,813 INFO L129 PetriNetUnfolder]: 615/12020 cut-off events. [2021-03-11 04:51:07,813 INFO L130 PetriNetUnfolder]: For 310656/314231 co-relation queries the response was YES. [2021-03-11 04:51:07,888 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66801 conditions, 12020 events. 615/12020 cut-off events. For 310656/314231 co-relation queries the response was YES. Maximal size of possible extension queue 1978. Compared 217966 event pairs, 574 based on Foata normal form. 54/11638 useless extension candidates. Maximal degree in co-relation 66684. Up to 1701 conditions per place. [2021-03-11 04:51:07,914 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 234 selfloop transitions, 504 changer transitions 2/761 dead transitions. [2021-03-11 04:51:07,915 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 761 transitions, 28883 flow [2021-03-11 04:51:07,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 04:51:07,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 04:51:07,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 04:51:07,915 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 04:51:07,916 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 04:51:07,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 04:51:07,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:51:07,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 04:51:07,916 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:51:07,917 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:51:07,917 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:51:07,917 INFO L185 Difference]: Start difference. First operand has 316 places, 752 transitions, 27303 flow. Second operand 9 states and 674 transitions. [2021-03-11 04:51:07,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 761 transitions, 28883 flow [2021-03-11 04:51:09,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 761 transitions, 27910 flow, removed 10 selfloop flow, removed 5 redundant places. [2021-03-11 04:51:09,520 INFO L241 Difference]: Finished difference. Result has 319 places, 750 transitions, 27265 flow [2021-03-11 04:51:09,521 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=26340, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=752, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=504, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=27265, PETRI_PLACES=319, PETRI_TRANSITIONS=750} [2021-03-11 04:51:09,521 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 268 predicate places. [2021-03-11 04:51:09,521 INFO L480 AbstractCegarLoop]: Abstraction has has 319 places, 750 transitions, 27265 flow [2021-03-11 04:51:09,521 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:51:09,521 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:51:09,521 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:51:09,521 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-03-11 04:51:09,521 INFO L428 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:51:09,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:51:09,521 INFO L82 PathProgramCache]: Analyzing trace with hash 1009370577, now seen corresponding path program 41 times [2021-03-11 04:51:09,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:51:09,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362672277] [2021-03-11 04:51:09,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:51:09,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:51:09,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:51:09,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:51:09,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:51:09,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:51:09,535 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 04:51:09,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 04:51:09,541 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 04:51:09,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 04:51:09,549 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 04:51:09,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 04:51:09,560 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 04:51:09,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 04:51:09,580 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 04:51:09,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 04:51:09,602 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:51:09,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:51:09,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:51:09,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362672277] [2021-03-11 04:51:09,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:51:09,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:51:09,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023683827] [2021-03-11 04:51:09,622 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:51:09,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:51:09,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:51:09,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:51:09,623 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:51:09,623 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 750 transitions, 27265 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:51:09,623 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:51:09,623 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:51:09,623 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:51:13,392 INFO L129 PetriNetUnfolder]: 615/12011 cut-off events. [2021-03-11 04:51:13,393 INFO L130 PetriNetUnfolder]: For 310368/313943 co-relation queries the response was YES. [2021-03-11 04:51:13,471 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66865 conditions, 12011 events. 615/12011 cut-off events. For 310368/313943 co-relation queries the response was YES. Maximal size of possible extension queue 1976. Compared 217907 event pairs, 574 based on Foata normal form. 54/11630 useless extension candidates. Maximal degree in co-relation 66748. Up to 1701 conditions per place. [2021-03-11 04:51:13,498 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 239 selfloop transitions, 497 changer transitions 2/759 dead transitions. [2021-03-11 04:51:13,498 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 759 transitions, 28841 flow [2021-03-11 04:51:13,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 04:51:13,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 04:51:13,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 04:51:13,499 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 04:51:13,499 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 04:51:13,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 04:51:13,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:51:13,499 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 04:51:13,500 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:51:13,500 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:51:13,500 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:51:13,500 INFO L185 Difference]: Start difference. First operand has 319 places, 750 transitions, 27265 flow. Second operand 9 states and 674 transitions. [2021-03-11 04:51:13,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 759 transitions, 28841 flow [2021-03-11 04:51:15,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 759 transitions, 27840 flow, removed 10 selfloop flow, removed 6 redundant places. [2021-03-11 04:51:15,098 INFO L241 Difference]: Finished difference. Result has 321 places, 748 transitions, 27184 flow [2021-03-11 04:51:15,099 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=26274, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=750, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=497, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=27184, PETRI_PLACES=321, PETRI_TRANSITIONS=748} [2021-03-11 04:51:15,099 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 270 predicate places. [2021-03-11 04:51:15,099 INFO L480 AbstractCegarLoop]: Abstraction has has 321 places, 748 transitions, 27184 flow [2021-03-11 04:51:15,099 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:51:15,099 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:51:15,099 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:51:15,099 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-03-11 04:51:15,099 INFO L428 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:51:15,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:51:15,099 INFO L82 PathProgramCache]: Analyzing trace with hash -452642289, now seen corresponding path program 42 times [2021-03-11 04:51:15,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:51:15,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591336302] [2021-03-11 04:51:15,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:51:15,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:51:15,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:51:15,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:51:15,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:51:15,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:51:15,113 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 04:51:15,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 04:51:15,118 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 04:51:15,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 04:51:15,126 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 04:51:15,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 04:51:15,138 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 04:51:15,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 04:51:15,153 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 04:51:15,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 04:51:15,175 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:51:15,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:51:15,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:51:15,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591336302] [2021-03-11 04:51:15,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:51:15,198 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:51:15,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174035346] [2021-03-11 04:51:15,198 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:51:15,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:51:15,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:51:15,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:51:15,198 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:51:15,199 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 748 transitions, 27184 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:51:15,199 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:51:15,199 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:51:15,199 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:51:19,021 INFO L129 PetriNetUnfolder]: 615/12002 cut-off events. [2021-03-11 04:51:19,021 INFO L130 PetriNetUnfolder]: For 309991/313561 co-relation queries the response was YES. [2021-03-11 04:51:19,087 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66829 conditions, 12002 events. 615/12002 cut-off events. For 309991/313561 co-relation queries the response was YES. Maximal size of possible extension queue 1968. Compared 217732 event pairs, 574 based on Foata normal form. 52/11619 useless extension candidates. Maximal degree in co-relation 66712. Up to 1701 conditions per place. [2021-03-11 04:51:19,111 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 228 selfloop transitions, 504 changer transitions 4/757 dead transitions. [2021-03-11 04:51:19,111 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 757 transitions, 28756 flow [2021-03-11 04:51:19,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 04:51:19,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 04:51:19,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 04:51:19,112 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 04:51:19,112 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 04:51:19,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 04:51:19,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:51:19,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 04:51:19,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:51:19,113 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:51:19,113 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:51:19,113 INFO L185 Difference]: Start difference. First operand has 321 places, 748 transitions, 27184 flow. Second operand 9 states and 674 transitions. [2021-03-11 04:51:19,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 757 transitions, 28756 flow [2021-03-11 04:51:20,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 757 transitions, 27763 flow, removed 9 selfloop flow, removed 6 redundant places. [2021-03-11 04:51:20,675 INFO L241 Difference]: Finished difference. Result has 323 places, 744 transitions, 27034 flow [2021-03-11 04:51:20,675 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=26201, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=748, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=504, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=27034, PETRI_PLACES=323, PETRI_TRANSITIONS=744} [2021-03-11 04:51:20,675 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 272 predicate places. [2021-03-11 04:51:20,675 INFO L480 AbstractCegarLoop]: Abstraction has has 323 places, 744 transitions, 27034 flow [2021-03-11 04:51:20,675 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:51:20,675 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:51:20,676 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:51:20,676 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-03-11 04:51:20,676 INFO L428 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:51:20,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:51:20,676 INFO L82 PathProgramCache]: Analyzing trace with hash 1790005521, now seen corresponding path program 43 times [2021-03-11 04:51:20,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:51:20,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486839219] [2021-03-11 04:51:20,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:51:20,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:51:20,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:51:20,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:51:20,687 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:51:20,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:51:20,690 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:51:20,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 04:51:20,695 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 04:51:20,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 04:51:20,702 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 04:51:20,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 04:51:20,713 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 04:51:20,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 04:51:20,747 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 04:51:20,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 04:51:20,771 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:51:20,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:51:20,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:51:20,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486839219] [2021-03-11 04:51:20,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:51:20,791 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:51:20,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531481151] [2021-03-11 04:51:20,791 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:51:20,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:51:20,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:51:20,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:51:20,792 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:51:20,792 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 744 transitions, 27034 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:51:20,792 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:51:20,792 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:51:20,792 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:51:24,819 INFO L129 PetriNetUnfolder]: 596/12843 cut-off events. [2021-03-11 04:51:24,820 INFO L130 PetriNetUnfolder]: For 333456/336520 co-relation queries the response was YES. [2021-03-11 04:51:24,895 INFO L84 FinitePrefix]: Finished finitePrefix Result has 71373 conditions, 12843 events. 596/12843 cut-off events. For 333456/336520 co-relation queries the response was YES. Maximal size of possible extension queue 2127. Compared 236022 event pairs, 427 based on Foata normal form. 22/12380 useless extension candidates. Maximal degree in co-relation 71256. Up to 1847 conditions per place. [2021-03-11 04:51:24,923 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 656 selfloop transitions, 278 changer transitions 2/957 dead transitions. [2021-03-11 04:51:24,923 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 957 transitions, 36907 flow [2021-03-11 04:51:24,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 04:51:24,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 04:51:24,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 04:51:24,924 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 04:51:24,924 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 04:51:24,924 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 04:51:24,925 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:51:24,925 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 04:51:24,925 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:51:24,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:51:24,926 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:51:24,926 INFO L185 Difference]: Start difference. First operand has 323 places, 744 transitions, 27034 flow. Second operand 9 states and 674 transitions. [2021-03-11 04:51:24,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 957 transitions, 36907 flow [2021-03-11 04:51:26,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 957 transitions, 35612 flow, removed 9 selfloop flow, removed 7 redundant places. [2021-03-11 04:51:26,745 INFO L241 Difference]: Finished difference. Result has 329 places, 841 transitions, 30661 flow [2021-03-11 04:51:26,746 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=26038, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=744, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=181, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=466, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=30661, PETRI_PLACES=329, PETRI_TRANSITIONS=841} [2021-03-11 04:51:26,746 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 278 predicate places. [2021-03-11 04:51:26,746 INFO L480 AbstractCegarLoop]: Abstraction has has 329 places, 841 transitions, 30661 flow [2021-03-11 04:51:26,746 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:51:26,746 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:51:26,746 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:51:26,746 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-03-11 04:51:26,746 INFO L428 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:51:26,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:51:26,747 INFO L82 PathProgramCache]: Analyzing trace with hash 727273215, now seen corresponding path program 44 times [2021-03-11 04:51:26,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:51:26,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260765893] [2021-03-11 04:51:26,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:51:26,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:51:26,757 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:51:26,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:51:26,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:51:26,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:51:26,761 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 04:51:26,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 04:51:26,767 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 04:51:26,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 04:51:26,775 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 04:51:26,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 04:51:26,792 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 04:51:26,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 04:51:26,822 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 04:51:26,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 04:51:26,867 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:51:26,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:51:26,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:51:26,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260765893] [2021-03-11 04:51:26,889 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:51:26,889 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:51:26,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691759899] [2021-03-11 04:51:26,890 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:51:26,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:51:26,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:51:26,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:51:26,890 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:51:26,891 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 841 transitions, 30661 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:51:26,891 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:51:26,891 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:51:26,891 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:51:31,344 INFO L129 PetriNetUnfolder]: 593/12959 cut-off events. [2021-03-11 04:51:31,345 INFO L130 PetriNetUnfolder]: For 346346/349670 co-relation queries the response was YES. [2021-03-11 04:51:31,421 INFO L84 FinitePrefix]: Finished finitePrefix Result has 72302 conditions, 12959 events. 593/12959 cut-off events. For 346346/349670 co-relation queries the response was YES. Maximal size of possible extension queue 2132. Compared 239031 event pairs, 505 based on Foata normal form. 39/12495 useless extension candidates. Maximal degree in co-relation 72181. Up to 1781 conditions per place. [2021-03-11 04:51:31,447 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 381 selfloop transitions, 479 changer transitions 1/882 dead transitions. [2021-03-11 04:51:31,447 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 882 transitions, 33395 flow [2021-03-11 04:51:31,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 04:51:31,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 04:51:31,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 04:51:31,448 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 04:51:31,448 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 04:51:31,448 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 04:51:31,449 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:51:31,449 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 04:51:31,449 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:51:31,450 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:51:31,450 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:51:31,450 INFO L185 Difference]: Start difference. First operand has 329 places, 841 transitions, 30661 flow. Second operand 9 states and 674 transitions. [2021-03-11 04:51:31,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 882 transitions, 33395 flow [2021-03-11 04:51:33,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 882 transitions, 33022 flow, removed 82 selfloop flow, removed 4 redundant places. [2021-03-11 04:51:33,349 INFO L241 Difference]: Finished difference. Result has 336 places, 849 transitions, 31563 flow [2021-03-11 04:51:33,349 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=30323, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=841, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=471, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=31563, PETRI_PLACES=336, PETRI_TRANSITIONS=849} [2021-03-11 04:51:33,349 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 285 predicate places. [2021-03-11 04:51:33,349 INFO L480 AbstractCegarLoop]: Abstraction has has 336 places, 849 transitions, 31563 flow [2021-03-11 04:51:33,349 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:51:33,349 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:51:33,350 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:51:33,350 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-03-11 04:51:33,350 INFO L428 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:51:33,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:51:33,350 INFO L82 PathProgramCache]: Analyzing trace with hash 1144392531, now seen corresponding path program 45 times [2021-03-11 04:51:33,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:51:33,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650818431] [2021-03-11 04:51:33,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:51:33,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:51:33,363 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:51:33,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:51:33,364 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:51:33,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:51:33,367 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 04:51:33,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 04:51:33,373 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 04:51:33,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 04:51:33,382 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 04:51:33,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 04:51:33,393 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 04:51:33,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 04:51:33,408 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 04:51:33,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 04:51:33,430 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:51:33,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:51:33,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:51:33,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650818431] [2021-03-11 04:51:33,449 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:51:33,449 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:51:33,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442458876] [2021-03-11 04:51:33,449 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:51:33,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:51:33,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:51:33,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:51:33,450 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:51:33,450 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 849 transitions, 31563 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:51:33,450 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:51:33,450 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:51:33,450 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:51:37,920 INFO L129 PetriNetUnfolder]: 585/12957 cut-off events. [2021-03-11 04:51:37,921 INFO L130 PetriNetUnfolder]: For 355072/358292 co-relation queries the response was YES. [2021-03-11 04:51:37,992 INFO L84 FinitePrefix]: Finished finitePrefix Result has 73514 conditions, 12957 events. 585/12957 cut-off events. For 355072/358292 co-relation queries the response was YES. Maximal size of possible extension queue 2146. Compared 238675 event pairs, 532 based on Foata normal form. 37/12509 useless extension candidates. Maximal degree in co-relation 73391. Up to 1929 conditions per place. [2021-03-11 04:51:38,018 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 590 selfloop transitions, 369 changer transitions 1/981 dead transitions. [2021-03-11 04:51:38,018 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 981 transitions, 38558 flow [2021-03-11 04:51:38,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 04:51:38,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 04:51:38,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 04:51:38,019 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 04:51:38,019 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 04:51:38,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 04:51:38,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:51:38,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 04:51:38,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:51:38,021 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:51:38,021 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:51:38,021 INFO L185 Difference]: Start difference. First operand has 336 places, 849 transitions, 31563 flow. Second operand 9 states and 674 transitions. [2021-03-11 04:51:38,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 981 transitions, 38558 flow [2021-03-11 04:51:39,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 981 transitions, 37593 flow, removed 24 selfloop flow, removed 5 redundant places. [2021-03-11 04:51:39,951 INFO L241 Difference]: Finished difference. Result has 344 places, 870 transitions, 32494 flow [2021-03-11 04:51:39,952 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=30639, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=849, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=348, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=480, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=32494, PETRI_PLACES=344, PETRI_TRANSITIONS=870} [2021-03-11 04:51:39,952 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 293 predicate places. [2021-03-11 04:51:39,952 INFO L480 AbstractCegarLoop]: Abstraction has has 344 places, 870 transitions, 32494 flow [2021-03-11 04:51:39,952 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:51:39,952 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:51:39,952 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:51:39,952 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-03-11 04:51:39,952 INFO L428 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:51:39,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:51:39,953 INFO L82 PathProgramCache]: Analyzing trace with hash 446493953, now seen corresponding path program 46 times [2021-03-11 04:51:39,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:51:39,953 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352808587] [2021-03-11 04:51:39,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:51:39,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:51:39,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:51:39,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:51:39,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:51:39,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:51:39,967 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 04:51:39,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 04:51:39,972 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 04:51:39,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 04:51:39,979 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 04:51:39,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 04:51:39,993 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 04:51:39,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 04:51:40,015 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 04:51:40,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 04:51:40,041 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:51:40,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:51:40,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:51:40,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352808587] [2021-03-11 04:51:40,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:51:40,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:51:40,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888595395] [2021-03-11 04:51:40,064 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:51:40,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:51:40,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:51:40,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:51:40,065 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:51:40,065 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 870 transitions, 32494 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:51:40,065 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:51:40,065 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:51:40,065 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:51:44,785 INFO L129 PetriNetUnfolder]: 552/13372 cut-off events. [2021-03-11 04:51:44,786 INFO L130 PetriNetUnfolder]: For 381594/385626 co-relation queries the response was YES. [2021-03-11 04:51:44,875 INFO L84 FinitePrefix]: Finished finitePrefix Result has 76155 conditions, 13372 events. 552/13372 cut-off events. For 381594/385626 co-relation queries the response was YES. Maximal size of possible extension queue 2220. Compared 248728 event pairs, 507 based on Foata normal form. 45/12905 useless extension candidates. Maximal degree in co-relation 76027. Up to 1781 conditions per place. [2021-03-11 04:51:44,904 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 428 selfloop transitions, 478 changer transitions 1/928 dead transitions. [2021-03-11 04:51:44,904 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 928 transitions, 36369 flow [2021-03-11 04:51:44,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 04:51:44,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 04:51:44,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 04:51:44,905 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 04:51:44,905 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 04:51:44,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 04:51:44,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:51:44,905 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 04:51:44,905 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:51:44,906 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:51:44,906 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:51:44,906 INFO L185 Difference]: Start difference. First operand has 344 places, 870 transitions, 32494 flow. Second operand 9 states and 674 transitions. [2021-03-11 04:51:44,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 928 transitions, 36369 flow [2021-03-11 04:51:47,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 928 transitions, 35897 flow, removed 59 selfloop flow, removed 3 redundant places. [2021-03-11 04:51:47,249 INFO L241 Difference]: Finished difference. Result has 353 places, 887 transitions, 33910 flow [2021-03-11 04:51:47,250 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=32056, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=870, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=461, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=392, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=33910, PETRI_PLACES=353, PETRI_TRANSITIONS=887} [2021-03-11 04:51:47,250 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 302 predicate places. [2021-03-11 04:51:47,250 INFO L480 AbstractCegarLoop]: Abstraction has has 353 places, 887 transitions, 33910 flow [2021-03-11 04:51:47,250 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:51:47,250 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:51:47,250 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:51:47,250 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-03-11 04:51:47,250 INFO L428 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:51:47,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:51:47,250 INFO L82 PathProgramCache]: Analyzing trace with hash -1844986715, now seen corresponding path program 47 times [2021-03-11 04:51:47,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:51:47,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626198207] [2021-03-11 04:51:47,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:51:47,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:51:47,260 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:51:47,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:51:47,260 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:51:47,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:51:47,264 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 04:51:47,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 04:51:47,269 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 04:51:47,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 04:51:47,276 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 04:51:47,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 04:51:47,291 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 04:51:47,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 04:51:47,320 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 04:51:47,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 04:51:47,342 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:51:47,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:51:47,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:51:47,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626198207] [2021-03-11 04:51:47,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:51:47,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:51:47,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014012358] [2021-03-11 04:51:47,363 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:51:47,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:51:47,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:51:47,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:51:47,364 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:51:47,364 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 887 transitions, 33910 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:51:47,364 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:51:47,364 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:51:47,364 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:51:52,206 INFO L129 PetriNetUnfolder]: 550/13352 cut-off events. [2021-03-11 04:51:52,206 INFO L130 PetriNetUnfolder]: For 391680/395707 co-relation queries the response was YES. [2021-03-11 04:51:52,298 INFO L84 FinitePrefix]: Finished finitePrefix Result has 77019 conditions, 13352 events. 550/13352 cut-off events. For 391680/395707 co-relation queries the response was YES. Maximal size of possible extension queue 2206. Compared 248112 event pairs, 532 based on Foata normal form. 41/12885 useless extension candidates. Maximal degree in co-relation 76887. Up to 1929 conditions per place. [2021-03-11 04:51:52,327 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 547 selfloop transitions, 431 changer transitions 1/1000 dead transitions. [2021-03-11 04:51:52,328 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 1000 transitions, 40335 flow [2021-03-11 04:51:52,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 04:51:52,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 04:51:52,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 04:51:52,328 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 04:51:52,328 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 04:51:52,329 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 04:51:52,329 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:51:52,329 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 04:51:52,329 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:51:52,330 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:51:52,330 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:51:52,330 INFO L185 Difference]: Start difference. First operand has 353 places, 887 transitions, 33910 flow. Second operand 9 states and 674 transitions. [2021-03-11 04:51:52,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 1000 transitions, 40335 flow [2021-03-11 04:51:54,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 1000 transitions, 39542 flow, removed 38 selfloop flow, removed 4 redundant places. [2021-03-11 04:51:54,931 INFO L241 Difference]: Finished difference. Result has 361 places, 898 transitions, 34689 flow [2021-03-11 04:51:54,931 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=33129, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=887, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=420, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=456, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=34689, PETRI_PLACES=361, PETRI_TRANSITIONS=898} [2021-03-11 04:51:54,932 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 310 predicate places. [2021-03-11 04:51:54,932 INFO L480 AbstractCegarLoop]: Abstraction has has 361 places, 898 transitions, 34689 flow [2021-03-11 04:51:54,932 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:51:54,932 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:51:54,932 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:51:54,932 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-03-11 04:51:54,932 INFO L428 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:51:54,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:51:54,932 INFO L82 PathProgramCache]: Analyzing trace with hash 1774227033, now seen corresponding path program 48 times [2021-03-11 04:51:54,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:51:54,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110758219] [2021-03-11 04:51:54,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:51:54,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:51:54,946 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:51:54,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:51:54,946 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:51:54,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:51:54,950 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 04:51:54,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 04:51:54,955 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 04:51:54,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 04:51:54,962 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 04:51:54,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 04:51:54,974 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 04:51:54,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 04:51:55,004 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 04:51:55,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 04:51:55,028 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:51:55,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:51:55,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:51:55,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110758219] [2021-03-11 04:51:55,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:51:55,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:51:55,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599763125] [2021-03-11 04:51:55,047 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:51:55,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:51:55,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:51:55,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:51:55,047 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:51:55,047 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 898 transitions, 34689 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:51:55,047 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:51:55,047 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:51:55,047 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:52:00,158 INFO L129 PetriNetUnfolder]: 512/13732 cut-off events. [2021-03-11 04:52:00,158 INFO L130 PetriNetUnfolder]: For 410162/414322 co-relation queries the response was YES. [2021-03-11 04:52:00,238 INFO L84 FinitePrefix]: Finished finitePrefix Result has 79420 conditions, 13732 events. 512/13732 cut-off events. For 410162/414322 co-relation queries the response was YES. Maximal size of possible extension queue 2293. Compared 257480 event pairs, 472 based on Foata normal form. 41/13245 useless extension candidates. Maximal degree in co-relation 79284. Up to 1965 conditions per place. [2021-03-11 04:52:00,264 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 563 selfloop transitions, 414 changer transitions 2/1000 dead transitions. [2021-03-11 04:52:00,264 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 1000 transitions, 40510 flow [2021-03-11 04:52:00,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 04:52:00,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 04:52:00,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 04:52:00,265 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 04:52:00,265 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 04:52:00,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 04:52:00,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:52:00,265 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 04:52:00,266 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:52:00,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:52:00,266 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:52:00,266 INFO L185 Difference]: Start difference. First operand has 361 places, 898 transitions, 34689 flow. Second operand 9 states and 674 transitions. [2021-03-11 04:52:00,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 1000 transitions, 40510 flow [2021-03-11 04:52:02,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 1000 transitions, 39974 flow, removed 91 selfloop flow, removed 3 redundant places. [2021-03-11 04:52:02,812 INFO L241 Difference]: Finished difference. Result has 370 places, 924 transitions, 36324 flow [2021-03-11 04:52:02,812 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=34219, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=898, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=388, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=484, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=36324, PETRI_PLACES=370, PETRI_TRANSITIONS=924} [2021-03-11 04:52:02,812 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 319 predicate places. [2021-03-11 04:52:02,812 INFO L480 AbstractCegarLoop]: Abstraction has has 370 places, 924 transitions, 36324 flow [2021-03-11 04:52:02,813 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:52:02,813 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:52:02,813 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:52:02,813 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-03-11 04:52:02,813 INFO L428 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:52:02,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:52:02,813 INFO L82 PathProgramCache]: Analyzing trace with hash -415000911, now seen corresponding path program 49 times [2021-03-11 04:52:02,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:52:02,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259283230] [2021-03-11 04:52:02,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:52:02,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:52:02,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:52:02,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:52:02,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:52:02,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:52:02,826 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 04:52:02,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 04:52:02,832 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 04:52:02,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 04:52:02,839 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 04:52:02,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 04:52:02,849 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 04:52:02,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 04:52:02,866 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 04:52:02,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 04:52:02,891 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:52:02,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:52:02,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:52:02,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259283230] [2021-03-11 04:52:02,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:52:02,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:52:02,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801654666] [2021-03-11 04:52:02,911 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:52:02,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:52:02,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:52:02,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:52:02,912 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:52:02,912 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 924 transitions, 36324 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:52:02,912 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:52:02,912 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:52:02,912 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:52:08,001 INFO L129 PetriNetUnfolder]: 512/13723 cut-off events. [2021-03-11 04:52:08,002 INFO L130 PetriNetUnfolder]: For 419558/423412 co-relation queries the response was YES. [2021-03-11 04:52:08,081 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80413 conditions, 13723 events. 512/13723 cut-off events. For 419558/423412 co-relation queries the response was YES. Maximal size of possible extension queue 2291. Compared 257411 event pairs, 512 based on Foata normal form. 43/13239 useless extension candidates. Maximal degree in co-relation 80273. Up to 1781 conditions per place. [2021-03-11 04:52:08,106 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 458 selfloop transitions, 487 changer transitions 2/968 dead transitions. [2021-03-11 04:52:08,107 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 968 transitions, 39808 flow [2021-03-11 04:52:08,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 04:52:08,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 04:52:08,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 04:52:08,108 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 04:52:08,108 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 04:52:08,108 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 04:52:08,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:52:08,108 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 04:52:08,108 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:52:08,109 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:52:08,109 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:52:08,109 INFO L185 Difference]: Start difference. First operand has 370 places, 924 transitions, 36324 flow. Second operand 9 states and 674 transitions. [2021-03-11 04:52:08,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 968 transitions, 39808 flow [2021-03-11 04:52:10,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 968 transitions, 39137 flow, removed 27 selfloop flow, removed 5 redundant places. [2021-03-11 04:52:10,809 INFO L241 Difference]: Finished difference. Result has 376 places, 931 transitions, 37021 flow [2021-03-11 04:52:10,810 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=35679, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=924, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=480, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=37021, PETRI_PLACES=376, PETRI_TRANSITIONS=931} [2021-03-11 04:52:10,810 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 325 predicate places. [2021-03-11 04:52:10,810 INFO L480 AbstractCegarLoop]: Abstraction has has 376 places, 931 transitions, 37021 flow [2021-03-11 04:52:10,810 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:52:10,810 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:52:10,810 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:52:10,810 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-03-11 04:52:10,810 INFO L428 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:52:10,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:52:10,811 INFO L82 PathProgramCache]: Analyzing trace with hash 571685001, now seen corresponding path program 50 times [2021-03-11 04:52:10,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:52:10,811 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843367116] [2021-03-11 04:52:10,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:52:10,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:52:10,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:52:10,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:52:10,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:52:10,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:52:10,824 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 04:52:10,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 04:52:10,829 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 04:52:10,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 04:52:10,837 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 04:52:10,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 04:52:10,847 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 04:52:10,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 04:52:10,861 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 04:52:10,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 04:52:10,882 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:52:10,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:52:10,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:52:10,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843367116] [2021-03-11 04:52:10,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:52:10,905 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:52:10,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313287703] [2021-03-11 04:52:10,905 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:52:10,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:52:10,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:52:10,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:52:10,906 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:52:10,906 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 931 transitions, 37021 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:52:10,906 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:52:10,906 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:52:10,906 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:52:16,014 INFO L129 PetriNetUnfolder]: 512/13713 cut-off events. [2021-03-11 04:52:16,014 INFO L130 PetriNetUnfolder]: For 422671/426501 co-relation queries the response was YES. [2021-03-11 04:52:16,228 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80910 conditions, 13713 events. 512/13713 cut-off events. For 422671/426501 co-relation queries the response was YES. Maximal size of possible extension queue 2289. Compared 257082 event pairs, 512 based on Foata normal form. 43/13229 useless extension candidates. Maximal degree in co-relation 80768. Up to 1781 conditions per place. [2021-03-11 04:52:16,254 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 458 selfloop transitions, 486 changer transitions 1/966 dead transitions. [2021-03-11 04:52:16,254 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 966 transitions, 40126 flow [2021-03-11 04:52:16,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 04:52:16,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 04:52:16,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 04:52:16,255 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 04:52:16,255 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 04:52:16,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 04:52:16,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:52:16,255 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 04:52:16,256 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:52:16,256 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:52:16,256 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:52:16,256 INFO L185 Difference]: Start difference. First operand has 376 places, 931 transitions, 37021 flow. Second operand 9 states and 674 transitions. [2021-03-11 04:52:16,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 966 transitions, 40126 flow [2021-03-11 04:52:18,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 966 transitions, 39153 flow, removed 27 selfloop flow, removed 6 redundant places. [2021-03-11 04:52:18,970 INFO L241 Difference]: Finished difference. Result has 379 places, 931 transitions, 37043 flow [2021-03-11 04:52:18,970 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=36066, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=931, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=485, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=445, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=37043, PETRI_PLACES=379, PETRI_TRANSITIONS=931} [2021-03-11 04:52:18,970 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 328 predicate places. [2021-03-11 04:52:18,970 INFO L480 AbstractCegarLoop]: Abstraction has has 379 places, 931 transitions, 37043 flow [2021-03-11 04:52:18,970 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:52:18,970 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:52:18,970 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:52:18,971 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-03-11 04:52:18,971 INFO L428 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:52:18,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:52:18,971 INFO L82 PathProgramCache]: Analyzing trace with hash -1658613113, now seen corresponding path program 51 times [2021-03-11 04:52:18,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:52:18,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778364699] [2021-03-11 04:52:18,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:52:18,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:52:18,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:52:18,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:52:18,981 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:52:18,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:52:18,984 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 04:52:18,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 04:52:18,990 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 04:52:18,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 04:52:18,998 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 04:52:18,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 04:52:19,010 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 04:52:19,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 04:52:19,026 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 04:52:19,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 04:52:19,046 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:52:19,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:52:19,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:52:19,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778364699] [2021-03-11 04:52:19,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:52:19,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:52:19,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320732251] [2021-03-11 04:52:19,068 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:52:19,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:52:19,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:52:19,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:52:19,069 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:52:19,069 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 931 transitions, 37043 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:52:19,069 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:52:19,069 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:52:19,069 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:52:24,214 INFO L129 PetriNetUnfolder]: 512/13705 cut-off events. [2021-03-11 04:52:24,214 INFO L130 PetriNetUnfolder]: For 421112/424942 co-relation queries the response was YES. [2021-03-11 04:52:24,295 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80931 conditions, 13705 events. 512/13705 cut-off events. For 421112/424942 co-relation queries the response was YES. Maximal size of possible extension queue 2288. Compared 257025 event pairs, 512 based on Foata normal form. 43/13221 useless extension candidates. Maximal degree in co-relation 80789. Up to 1781 conditions per place. [2021-03-11 04:52:24,321 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 386 selfloop transitions, 536 changer transitions 1/944 dead transitions. [2021-03-11 04:52:24,321 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 944 transitions, 39157 flow [2021-03-11 04:52:24,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 04:52:24,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 04:52:24,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 04:52:24,322 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 04:52:24,322 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 04:52:24,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 04:52:24,322 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:52:24,322 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 04:52:24,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:52:24,323 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:52:24,323 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:52:24,323 INFO L185 Difference]: Start difference. First operand has 379 places, 931 transitions, 37043 flow. Second operand 9 states and 674 transitions. [2021-03-11 04:52:24,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 944 transitions, 39157 flow [2021-03-11 04:52:27,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 944 transitions, 38174 flow, removed 10 selfloop flow, removed 8 redundant places. [2021-03-11 04:52:27,034 INFO L241 Difference]: Finished difference. Result has 379 places, 930 transitions, 37095 flow [2021-03-11 04:52:27,035 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=36070, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=931, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=536, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=37095, PETRI_PLACES=379, PETRI_TRANSITIONS=930} [2021-03-11 04:52:27,035 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 328 predicate places. [2021-03-11 04:52:27,035 INFO L480 AbstractCegarLoop]: Abstraction has has 379 places, 930 transitions, 37095 flow [2021-03-11 04:52:27,035 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:52:27,035 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:52:27,035 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:52:27,035 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-03-11 04:52:27,035 INFO L428 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:52:27,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:52:27,036 INFO L82 PathProgramCache]: Analyzing trace with hash -766084683, now seen corresponding path program 52 times [2021-03-11 04:52:27,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:52:27,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102373952] [2021-03-11 04:52:27,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:52:27,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:52:27,045 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:52:27,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:52:27,045 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:52:27,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:52:27,048 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 04:52:27,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 04:52:27,054 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 04:52:27,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 04:52:27,061 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 04:52:27,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 04:52:27,072 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 04:52:27,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 04:52:27,087 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 04:52:27,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 04:52:27,110 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:52:27,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:52:27,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:52:27,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102373952] [2021-03-11 04:52:27,131 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:52:27,131 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:52:27,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408262018] [2021-03-11 04:52:27,131 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:52:27,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:52:27,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:52:27,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:52:27,132 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:52:27,132 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 930 transitions, 37095 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:52:27,132 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:52:27,132 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:52:27,132 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:52:32,204 INFO L129 PetriNetUnfolder]: 512/13699 cut-off events. [2021-03-11 04:52:32,205 INFO L130 PetriNetUnfolder]: For 420785/424615 co-relation queries the response was YES. [2021-03-11 04:52:32,298 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80943 conditions, 13699 events. 512/13699 cut-off events. For 420785/424615 co-relation queries the response was YES. Maximal size of possible extension queue 2287. Compared 256713 event pairs, 512 based on Foata normal form. 43/13216 useless extension candidates. Maximal degree in co-relation 80803. Up to 1781 conditions per place. [2021-03-11 04:52:32,325 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 383 selfloop transitions, 537 changer transitions 2/943 dead transitions. [2021-03-11 04:52:32,325 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 943 transitions, 39207 flow [2021-03-11 04:52:32,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 04:52:32,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 04:52:32,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 04:52:32,326 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 04:52:32,326 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 04:52:32,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 04:52:32,327 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:52:32,327 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 04:52:32,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:52:32,328 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:52:32,328 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:52:32,328 INFO L185 Difference]: Start difference. First operand has 379 places, 930 transitions, 37095 flow. Second operand 9 states and 674 transitions. [2021-03-11 04:52:32,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 943 transitions, 39207 flow [2021-03-11 04:52:35,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 943 transitions, 38446 flow, removed 17 selfloop flow, removed 4 redundant places. [2021-03-11 04:52:35,147 INFO L241 Difference]: Finished difference. Result has 383 places, 928 transitions, 37326 flow [2021-03-11 04:52:35,148 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=36344, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=930, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=537, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=37326, PETRI_PLACES=383, PETRI_TRANSITIONS=928} [2021-03-11 04:52:35,148 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 332 predicate places. [2021-03-11 04:52:35,148 INFO L480 AbstractCegarLoop]: Abstraction has has 383 places, 928 transitions, 37326 flow [2021-03-11 04:52:35,148 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:52:35,148 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:52:35,148 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:52:35,148 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-03-11 04:52:35,148 INFO L428 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:52:35,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:52:35,149 INFO L82 PathProgramCache]: Analyzing trace with hash -1694380721, now seen corresponding path program 53 times [2021-03-11 04:52:35,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:52:35,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109437798] [2021-03-11 04:52:35,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:52:35,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:52:35,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:52:35,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:52:35,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:52:35,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:52:35,162 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 04:52:35,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 04:52:35,168 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 04:52:35,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 04:52:35,175 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 04:52:35,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 04:52:35,187 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 04:52:35,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 04:52:35,204 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 04:52:35,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 04:52:35,228 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:52:35,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:52:35,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:52:35,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109437798] [2021-03-11 04:52:35,250 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:52:35,250 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:52:35,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716419475] [2021-03-11 04:52:35,250 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:52:35,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:52:35,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:52:35,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:52:35,251 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:52:35,251 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 928 transitions, 37326 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:52:35,251 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:52:35,251 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:52:35,251 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:52:40,398 INFO L129 PetriNetUnfolder]: 512/13691 cut-off events. [2021-03-11 04:52:40,398 INFO L130 PetriNetUnfolder]: For 420886/424721 co-relation queries the response was YES. [2021-03-11 04:52:40,492 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81432 conditions, 13691 events. 512/13691 cut-off events. For 420886/424721 co-relation queries the response was YES. Maximal size of possible extension queue 2302. Compared 256689 event pairs, 512 based on Foata normal form. 45/13211 useless extension candidates. Maximal degree in co-relation 81292. Up to 1781 conditions per place. [2021-03-11 04:52:40,520 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 380 selfloop transitions, 539 changer transitions 1/941 dead transitions. [2021-03-11 04:52:40,520 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 941 transitions, 39434 flow [2021-03-11 04:52:40,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 04:52:40,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 04:52:40,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 04:52:40,521 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 04:52:40,521 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 04:52:40,521 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 04:52:40,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:52:40,522 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 04:52:40,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:52:40,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:52:40,523 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:52:40,523 INFO L185 Difference]: Start difference. First operand has 383 places, 928 transitions, 37326 flow. Second operand 9 states and 674 transitions. [2021-03-11 04:52:40,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 941 transitions, 39434 flow [2021-03-11 04:52:43,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 941 transitions, 38364 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-03-11 04:52:43,479 INFO L241 Difference]: Finished difference. Result has 385 places, 930 transitions, 37512 flow [2021-03-11 04:52:43,480 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=36266, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=928, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=536, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=37512, PETRI_PLACES=385, PETRI_TRANSITIONS=930} [2021-03-11 04:52:43,480 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 334 predicate places. [2021-03-11 04:52:43,480 INFO L480 AbstractCegarLoop]: Abstraction has has 385 places, 930 transitions, 37512 flow [2021-03-11 04:52:43,480 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:52:43,480 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:52:43,480 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:52:43,480 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-03-11 04:52:43,480 INFO L428 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:52:43,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:52:43,481 INFO L82 PathProgramCache]: Analyzing trace with hash -1853903521, now seen corresponding path program 54 times [2021-03-11 04:52:43,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:52:43,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416419662] [2021-03-11 04:52:43,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:52:43,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:52:43,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:52:43,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:52:43,491 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:52:43,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:52:43,495 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 04:52:43,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 04:52:43,500 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 04:52:43,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 04:52:43,509 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 04:52:43,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 04:52:43,520 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 04:52:43,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 04:52:43,537 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 04:52:43,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 04:52:43,560 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:52:43,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:52:43,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:52:43,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416419662] [2021-03-11 04:52:43,583 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:52:43,583 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:52:43,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563369823] [2021-03-11 04:52:43,583 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:52:43,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:52:43,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:52:43,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:52:43,584 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:52:43,584 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 930 transitions, 37512 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:52:43,584 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:52:43,584 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:52:43,584 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:52:48,959 INFO L129 PetriNetUnfolder]: 512/13685 cut-off events. [2021-03-11 04:52:48,959 INFO L130 PetriNetUnfolder]: For 424487/428322 co-relation queries the response was YES. [2021-03-11 04:52:49,042 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81525 conditions, 13685 events. 512/13685 cut-off events. For 424487/428322 co-relation queries the response was YES. Maximal size of possible extension queue 2301. Compared 256738 event pairs, 512 based on Foata normal form. 45/13206 useless extension candidates. Maximal degree in co-relation 81384. Up to 1781 conditions per place. [2021-03-11 04:52:49,067 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 433 selfloop transitions, 506 changer transitions 1/961 dead transitions. [2021-03-11 04:52:49,067 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 961 transitions, 40549 flow [2021-03-11 04:52:49,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 04:52:49,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 04:52:49,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 04:52:49,068 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 04:52:49,068 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 04:52:49,068 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 04:52:49,068 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:52:49,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 04:52:49,069 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:52:49,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:52:49,070 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:52:49,070 INFO L185 Difference]: Start difference. First operand has 385 places, 930 transitions, 37512 flow. Second operand 9 states and 674 transitions. [2021-03-11 04:52:49,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 961 transitions, 40549 flow [2021-03-11 04:52:51,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 961 transitions, 39509 flow, removed 27 selfloop flow, removed 5 redundant places. [2021-03-11 04:52:51,862 INFO L241 Difference]: Finished difference. Result has 389 places, 950 transitions, 38562 flow [2021-03-11 04:52:51,863 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=36503, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=930, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=485, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=38562, PETRI_PLACES=389, PETRI_TRANSITIONS=950} [2021-03-11 04:52:51,863 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 338 predicate places. [2021-03-11 04:52:51,863 INFO L480 AbstractCegarLoop]: Abstraction has has 389 places, 950 transitions, 38562 flow [2021-03-11 04:52:51,863 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:52:51,863 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:52:51,863 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:52:51,864 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-03-11 04:52:51,864 INFO L428 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:52:51,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:52:51,864 INFO L82 PathProgramCache]: Analyzing trace with hash 629884087, now seen corresponding path program 55 times [2021-03-11 04:52:51,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:52:51,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316397580] [2021-03-11 04:52:51,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:52:51,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:52:51,874 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:52:51,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:52:51,874 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:52:51,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:52:51,878 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 04:52:51,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 04:52:51,883 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 04:52:51,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 04:52:51,891 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 04:52:51,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 04:52:51,915 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 04:52:51,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 04:52:51,930 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 04:52:51,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 04:52:51,953 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:52:51,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:52:51,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:52:51,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316397580] [2021-03-11 04:52:51,973 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:52:51,973 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:52:51,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405142301] [2021-03-11 04:52:51,973 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:52:51,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:52:51,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:52:51,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:52:51,974 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:52:51,974 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 950 transitions, 38562 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:52:51,974 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:52:51,974 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:52:51,974 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:52:57,184 INFO L129 PetriNetUnfolder]: 512/13679 cut-off events. [2021-03-11 04:52:57,184 INFO L130 PetriNetUnfolder]: For 426281/430116 co-relation queries the response was YES. [2021-03-11 04:52:57,271 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81666 conditions, 13679 events. 512/13679 cut-off events. For 426281/430116 co-relation queries the response was YES. Maximal size of possible extension queue 2300. Compared 256507 event pairs, 512 based on Foata normal form. 45/13201 useless extension candidates. Maximal degree in co-relation 81524. Up to 1781 conditions per place. [2021-03-11 04:52:57,298 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 372 selfloop transitions, 566 changer transitions 1/960 dead transitions. [2021-03-11 04:52:57,298 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 960 transitions, 40589 flow [2021-03-11 04:52:57,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 04:52:57,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 04:52:57,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 04:52:57,299 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 04:52:57,299 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 04:52:57,299 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 04:52:57,299 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:52:57,299 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 04:52:57,300 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:52:57,300 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:52:57,301 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:52:57,301 INFO L185 Difference]: Start difference. First operand has 389 places, 950 transitions, 38562 flow. Second operand 9 states and 674 transitions. [2021-03-11 04:52:57,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 960 transitions, 40589 flow [2021-03-11 04:53:00,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 960 transitions, 39634 flow, removed 18 selfloop flow, removed 6 redundant places. [2021-03-11 04:53:00,214 INFO L241 Difference]: Finished difference. Result has 391 places, 949 transitions, 38687 flow [2021-03-11 04:53:00,214 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=37617, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=950, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=566, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=384, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=38687, PETRI_PLACES=391, PETRI_TRANSITIONS=949} [2021-03-11 04:53:00,214 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 340 predicate places. [2021-03-11 04:53:00,214 INFO L480 AbstractCegarLoop]: Abstraction has has 391 places, 949 transitions, 38687 flow [2021-03-11 04:53:00,214 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:53:00,214 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:53:00,215 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:53:00,215 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-03-11 04:53:00,215 INFO L428 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:53:00,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:53:00,215 INFO L82 PathProgramCache]: Analyzing trace with hash -606551797, now seen corresponding path program 56 times [2021-03-11 04:53:00,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:53:00,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563824785] [2021-03-11 04:53:00,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:53:00,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:53:00,225 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:53:00,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:53:00,226 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:53:00,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:53:00,229 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 04:53:00,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 04:53:00,234 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 04:53:00,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 04:53:00,243 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 04:53:00,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 04:53:00,255 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 04:53:00,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 04:53:00,272 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 04:53:00,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 04:53:00,293 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:53:00,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:53:00,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:53:00,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563824785] [2021-03-11 04:53:00,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:53:00,312 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:53:00,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363450043] [2021-03-11 04:53:00,313 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:53:00,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:53:00,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:53:00,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:53:00,313 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:53:00,314 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 949 transitions, 38687 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:53:00,314 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:53:00,314 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:53:00,314 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:53:05,549 INFO L129 PetriNetUnfolder]: 512/13674 cut-off events. [2021-03-11 04:53:05,549 INFO L130 PetriNetUnfolder]: For 425991/429826 co-relation queries the response was YES. [2021-03-11 04:53:05,640 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81799 conditions, 13674 events. 512/13674 cut-off events. For 425991/429826 co-relation queries the response was YES. Maximal size of possible extension queue 2299. Compared 256221 event pairs, 512 based on Foata normal form. 45/13196 useless extension candidates. Maximal degree in co-relation 81658. Up to 1781 conditions per place. [2021-03-11 04:53:05,668 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 379 selfloop transitions, 557 changer transitions 2/959 dead transitions. [2021-03-11 04:53:05,668 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 959 transitions, 40712 flow [2021-03-11 04:53:05,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 04:53:05,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 04:53:05,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 04:53:05,669 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 04:53:05,669 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 04:53:05,669 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 04:53:05,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:53:05,669 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 04:53:05,670 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:53:05,670 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:53:05,670 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:53:05,670 INFO L185 Difference]: Start difference. First operand has 391 places, 949 transitions, 38687 flow. Second operand 9 states and 674 transitions. [2021-03-11 04:53:05,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 959 transitions, 40712 flow [2021-03-11 04:53:08,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 959 transitions, 39714 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-03-11 04:53:08,541 INFO L241 Difference]: Finished difference. Result has 394 places, 947 transitions, 38702 flow [2021-03-11 04:53:08,542 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=37699, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=949, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=557, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=392, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=38702, PETRI_PLACES=394, PETRI_TRANSITIONS=947} [2021-03-11 04:53:08,542 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 343 predicate places. [2021-03-11 04:53:08,542 INFO L480 AbstractCegarLoop]: Abstraction has has 394 places, 947 transitions, 38702 flow [2021-03-11 04:53:08,542 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:53:08,542 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:53:08,542 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:53:08,542 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-03-11 04:53:08,542 INFO L428 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:53:08,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:53:08,543 INFO L82 PathProgramCache]: Analyzing trace with hash -289807227, now seen corresponding path program 57 times [2021-03-11 04:53:08,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:53:08,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680095900] [2021-03-11 04:53:08,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:53:08,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:53:08,551 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:53:08,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:53:08,551 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:53:08,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:53:08,554 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 04:53:08,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 04:53:08,559 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 04:53:08,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 04:53:08,568 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 04:53:08,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 04:53:08,579 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 04:53:08,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 04:53:08,596 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 04:53:08,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 04:53:08,617 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:53:08,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:53:08,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:53:08,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680095900] [2021-03-11 04:53:08,636 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:53:08,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:53:08,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096131231] [2021-03-11 04:53:08,636 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:53:08,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:53:08,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:53:08,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:53:08,637 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:53:08,637 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 947 transitions, 38702 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:53:08,637 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:53:08,637 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:53:08,637 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:53:13,918 INFO L129 PetriNetUnfolder]: 512/13649 cut-off events. [2021-03-11 04:53:13,918 INFO L130 PetriNetUnfolder]: For 424507/428342 co-relation queries the response was YES. [2021-03-11 04:53:14,001 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81733 conditions, 13649 events. 512/13649 cut-off events. For 424507/428342 co-relation queries the response was YES. Maximal size of possible extension queue 2293. Compared 255715 event pairs, 512 based on Foata normal form. 45/13173 useless extension candidates. Maximal degree in co-relation 81592. Up to 1781 conditions per place. [2021-03-11 04:53:14,027 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 432 selfloop transitions, 501 changer transitions 3/957 dead transitions. [2021-03-11 04:53:14,028 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 957 transitions, 40723 flow [2021-03-11 04:53:14,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 04:53:14,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 04:53:14,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 04:53:14,028 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 04:53:14,029 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 04:53:14,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 04:53:14,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:53:14,029 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 04:53:14,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:53:14,030 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:53:14,030 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:53:14,030 INFO L185 Difference]: Start difference. First operand has 394 places, 947 transitions, 38702 flow. Second operand 9 states and 674 transitions. [2021-03-11 04:53:14,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 957 transitions, 40723 flow [2021-03-11 04:53:16,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 957 transitions, 39613 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-03-11 04:53:16,952 INFO L241 Difference]: Finished difference. Result has 396 places, 944 transitions, 38460 flow [2021-03-11 04:53:16,952 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=37602, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=947, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=501, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=446, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=38460, PETRI_PLACES=396, PETRI_TRANSITIONS=944} [2021-03-11 04:53:16,952 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 345 predicate places. [2021-03-11 04:53:16,952 INFO L480 AbstractCegarLoop]: Abstraction has has 396 places, 944 transitions, 38460 flow [2021-03-11 04:53:16,953 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:53:16,953 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:53:16,953 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:53:16,953 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-03-11 04:53:16,953 INFO L428 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:53:16,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:53:16,953 INFO L82 PathProgramCache]: Analyzing trace with hash 1413429073, now seen corresponding path program 58 times [2021-03-11 04:53:16,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:53:16,953 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077594830] [2021-03-11 04:53:16,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:53:16,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:53:16,973 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:53:16,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:53:16,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:53:16,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:53:16,977 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 04:53:16,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 04:53:16,982 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 04:53:16,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 04:53:16,990 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 04:53:16,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 04:53:17,000 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 04:53:17,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 04:53:17,028 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 04:53:17,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 04:53:17,052 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:53:17,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:53:17,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:53:17,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077594830] [2021-03-11 04:53:17,073 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:53:17,073 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:53:17,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638860917] [2021-03-11 04:53:17,073 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:53:17,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:53:17,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:53:17,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:53:17,074 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:53:17,074 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 944 transitions, 38460 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:53:17,074 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:53:17,074 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:53:17,074 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:53:22,212 INFO L129 PetriNetUnfolder]: 512/13635 cut-off events. [2021-03-11 04:53:22,212 INFO L130 PetriNetUnfolder]: For 423478/427308 co-relation queries the response was YES. [2021-03-11 04:53:22,299 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81628 conditions, 13635 events. 512/13635 cut-off events. For 423478/427308 co-relation queries the response was YES. Maximal size of possible extension queue 2274. Compared 255307 event pairs, 512 based on Foata normal form. 43/13158 useless extension candidates. Maximal degree in co-relation 81487. Up to 1781 conditions per place. [2021-03-11 04:53:22,327 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 445 selfloop transitions, 487 changer transitions 2/955 dead transitions. [2021-03-11 04:53:22,327 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 955 transitions, 40531 flow [2021-03-11 04:53:22,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 04:53:22,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 04:53:22,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 04:53:22,328 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 04:53:22,328 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 04:53:22,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 04:53:22,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:53:22,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 04:53:22,329 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:53:22,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:53:22,329 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:53:22,329 INFO L185 Difference]: Start difference. First operand has 396 places, 944 transitions, 38460 flow. Second operand 9 states and 674 transitions. [2021-03-11 04:53:22,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 955 transitions, 40531 flow [2021-03-11 04:53:25,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 955 transitions, 39788 flow, removed 8 selfloop flow, removed 4 redundant places. [2021-03-11 04:53:25,332 INFO L241 Difference]: Finished difference. Result has 401 places, 943 transitions, 38675 flow [2021-03-11 04:53:25,332 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=37727, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=944, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=487, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=457, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=38675, PETRI_PLACES=401, PETRI_TRANSITIONS=943} [2021-03-11 04:53:25,333 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 350 predicate places. [2021-03-11 04:53:25,333 INFO L480 AbstractCegarLoop]: Abstraction has has 401 places, 943 transitions, 38675 flow [2021-03-11 04:53:25,333 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:53:25,333 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:53:25,333 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:53:25,333 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-03-11 04:53:25,333 INFO L428 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:53:25,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:53:25,333 INFO L82 PathProgramCache]: Analyzing trace with hash 1668317611, now seen corresponding path program 59 times [2021-03-11 04:53:25,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:53:25,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306510789] [2021-03-11 04:53:25,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:53:25,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:53:25,347 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:53:25,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:53:25,348 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:53:25,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:53:25,351 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 04:53:25,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 04:53:25,357 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 04:53:25,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 04:53:25,365 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 04:53:25,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 04:53:25,377 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 04:53:25,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 04:53:25,407 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 04:53:25,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 04:53:25,433 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:53:25,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:53:25,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:53:25,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306510789] [2021-03-11 04:53:25,455 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:53:25,455 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:53:25,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053349675] [2021-03-11 04:53:25,457 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:53:25,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:53:25,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:53:25,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:53:25,458 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:53:25,458 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 943 transitions, 38675 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:53:25,458 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:53:25,458 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:53:25,458 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:53:30,714 INFO L129 PetriNetUnfolder]: 505/13687 cut-off events. [2021-03-11 04:53:30,714 INFO L130 PetriNetUnfolder]: For 426627/430462 co-relation queries the response was YES. [2021-03-11 04:53:30,817 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82417 conditions, 13687 events. 505/13687 cut-off events. For 426627/430462 co-relation queries the response was YES. Maximal size of possible extension queue 2302. Compared 256819 event pairs, 505 based on Foata normal form. 45/13208 useless extension candidates. Maximal degree in co-relation 82275. Up to 1781 conditions per place. [2021-03-11 04:53:30,847 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 485 selfloop transitions, 491 changer transitions 2/999 dead transitions. [2021-03-11 04:53:30,847 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 999 transitions, 42939 flow [2021-03-11 04:53:30,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 04:53:30,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 04:53:30,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 04:53:30,848 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 04:53:30,848 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 04:53:30,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 04:53:30,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:53:30,848 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 04:53:30,849 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:53:30,849 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:53:30,849 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:53:30,849 INFO L185 Difference]: Start difference. First operand has 401 places, 943 transitions, 38675 flow. Second operand 9 states and 674 transitions. [2021-03-11 04:53:30,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 999 transitions, 42939 flow [2021-03-11 04:53:33,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 999 transitions, 41941 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-03-11 04:53:33,905 INFO L241 Difference]: Finished difference. Result has 407 places, 963 transitions, 39796 flow [2021-03-11 04:53:33,905 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=37718, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=943, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=471, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=452, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=39796, PETRI_PLACES=407, PETRI_TRANSITIONS=963} [2021-03-11 04:53:33,905 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 356 predicate places. [2021-03-11 04:53:33,905 INFO L480 AbstractCegarLoop]: Abstraction has has 407 places, 963 transitions, 39796 flow [2021-03-11 04:53:33,905 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:53:33,906 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:53:33,906 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:53:33,906 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-03-11 04:53:33,906 INFO L428 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:53:33,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:53:33,906 INFO L82 PathProgramCache]: Analyzing trace with hash 589092203, now seen corresponding path program 60 times [2021-03-11 04:53:33,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:53:33,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300766903] [2021-03-11 04:53:33,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:53:33,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:53:33,915 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:53:33,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:53:33,916 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:53:33,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:53:33,919 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 04:53:33,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 04:53:33,924 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 04:53:33,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 04:53:33,932 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 04:53:33,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 04:53:33,954 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 04:53:33,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 04:53:33,984 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 04:53:33,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 04:53:34,006 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:53:34,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:53:34,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:53:34,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300766903] [2021-03-11 04:53:34,026 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:53:34,026 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:53:34,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004558198] [2021-03-11 04:53:34,026 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:53:34,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:53:34,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:53:34,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:53:34,027 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:53:34,027 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 963 transitions, 39796 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:53:34,027 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:53:34,027 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:53:34,027 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:53:39,380 INFO L129 PetriNetUnfolder]: 505/13677 cut-off events. [2021-03-11 04:53:39,380 INFO L130 PetriNetUnfolder]: For 438403/442428 co-relation queries the response was YES. [2021-03-11 04:53:39,463 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82778 conditions, 13677 events. 505/13677 cut-off events. For 438403/442428 co-relation queries the response was YES. Maximal size of possible extension queue 2300. Compared 256451 event pairs, 505 based on Foata normal form. 49/13202 useless extension candidates. Maximal degree in co-relation 82632. Up to 1781 conditions per place. [2021-03-11 04:53:39,489 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 415 selfloop transitions, 538 changer transitions 2/976 dead transitions. [2021-03-11 04:53:39,489 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 976 transitions, 42026 flow [2021-03-11 04:53:39,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 04:53:39,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 04:53:39,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 04:53:39,490 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 04:53:39,490 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 04:53:39,490 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 04:53:39,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:53:39,490 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 04:53:39,491 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:53:39,491 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:53:39,491 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:53:39,491 INFO L185 Difference]: Start difference. First operand has 407 places, 963 transitions, 39796 flow. Second operand 9 states and 674 transitions. [2021-03-11 04:53:39,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 976 transitions, 42026 flow [2021-03-11 04:53:42,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 976 transitions, 41221 flow, removed 34 selfloop flow, removed 6 redundant places. [2021-03-11 04:53:42,722 INFO L241 Difference]: Finished difference. Result has 411 places, 969 transitions, 40410 flow [2021-03-11 04:53:42,723 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=39003, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=963, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=531, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=40410, PETRI_PLACES=411, PETRI_TRANSITIONS=969} [2021-03-11 04:53:42,723 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 360 predicate places. [2021-03-11 04:53:42,723 INFO L480 AbstractCegarLoop]: Abstraction has has 411 places, 969 transitions, 40410 flow [2021-03-11 04:53:42,723 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:53:42,723 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:53:42,723 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:53:42,724 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-03-11 04:53:42,724 INFO L428 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:53:42,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:53:42,724 INFO L82 PathProgramCache]: Analyzing trace with hash -1616601303, now seen corresponding path program 61 times [2021-03-11 04:53:42,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:53:42,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387066892] [2021-03-11 04:53:42,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:53:42,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:53:42,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:53:42,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:53:42,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:53:42,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:53:42,737 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 04:53:42,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 04:53:42,743 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 04:53:42,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 04:53:42,751 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 04:53:42,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 04:53:42,770 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 04:53:42,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 04:53:42,794 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 04:53:42,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 04:53:42,816 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:53:42,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:53:42,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:53:42,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387066892] [2021-03-11 04:53:42,837 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:53:42,837 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:53:42,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318144042] [2021-03-11 04:53:42,837 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:53:42,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:53:42,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:53:42,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:53:42,838 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:53:42,838 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 969 transitions, 40410 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:53:42,838 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:53:42,838 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:53:42,838 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:53:48,291 INFO L129 PetriNetUnfolder]: 505/13667 cut-off events. [2021-03-11 04:53:48,291 INFO L130 PetriNetUnfolder]: For 442154/446179 co-relation queries the response was YES. [2021-03-11 04:53:48,383 INFO L84 FinitePrefix]: Finished finitePrefix Result has 83363 conditions, 13667 events. 505/13667 cut-off events. For 442154/446179 co-relation queries the response was YES. Maximal size of possible extension queue 2298. Compared 256168 event pairs, 505 based on Foata normal form. 49/13192 useless extension candidates. Maximal degree in co-relation 83217. Up to 1781 conditions per place. [2021-03-11 04:53:48,410 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 415 selfloop transitions, 536 changer transitions 2/974 dead transitions. [2021-03-11 04:53:48,410 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 974 transitions, 42336 flow [2021-03-11 04:53:48,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 04:53:48,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 04:53:48,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 04:53:48,411 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 04:53:48,411 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 04:53:48,411 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 04:53:48,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:53:48,411 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 04:53:48,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:53:48,412 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:53:48,413 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:53:48,413 INFO L185 Difference]: Start difference. First operand has 411 places, 969 transitions, 40410 flow. Second operand 9 states and 674 transitions. [2021-03-11 04:53:48,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 974 transitions, 42336 flow [2021-03-11 04:53:51,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 974 transitions, 41364 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-03-11 04:53:51,711 INFO L241 Difference]: Finished difference. Result has 414 places, 967 transitions, 40413 flow [2021-03-11 04:53:51,711 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=39448, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=969, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=536, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=433, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=40413, PETRI_PLACES=414, PETRI_TRANSITIONS=967} [2021-03-11 04:53:51,711 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 363 predicate places. [2021-03-11 04:53:51,711 INFO L480 AbstractCegarLoop]: Abstraction has has 414 places, 967 transitions, 40413 flow [2021-03-11 04:53:51,712 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:53:51,712 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:53:51,712 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:53:51,712 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-03-11 04:53:51,712 INFO L428 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:53:51,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:53:51,712 INFO L82 PathProgramCache]: Analyzing trace with hash -447527263, now seen corresponding path program 62 times [2021-03-11 04:53:51,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:53:51,712 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330862212] [2021-03-11 04:53:51,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:53:51,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:53:51,721 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:53:51,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:53:51,722 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:53:51,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:53:51,725 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 04:53:51,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 04:53:51,731 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 04:53:51,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 04:53:51,739 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 04:53:51,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 04:53:51,759 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 04:53:51,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 04:53:51,795 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 04:53:51,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 04:53:51,816 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:53:51,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:53:51,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:53:51,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330862212] [2021-03-11 04:53:51,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:53:51,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:53:51,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276870566] [2021-03-11 04:53:51,836 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:53:51,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:53:51,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:53:51,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:53:51,836 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:53:51,837 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 967 transitions, 40413 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:53:51,837 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:53:51,837 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:53:51,837 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:53:57,227 INFO L129 PetriNetUnfolder]: 505/13657 cut-off events. [2021-03-11 04:53:57,227 INFO L130 PetriNetUnfolder]: For 441769/445794 co-relation queries the response was YES. [2021-03-11 04:53:57,309 INFO L84 FinitePrefix]: Finished finitePrefix Result has 83476 conditions, 13657 events. 505/13657 cut-off events. For 441769/445794 co-relation queries the response was YES. Maximal size of possible extension queue 2296. Compared 255966 event pairs, 505 based on Foata normal form. 49/13182 useless extension candidates. Maximal degree in co-relation 83330. Up to 1781 conditions per place. [2021-03-11 04:53:57,334 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 415 selfloop transitions, 533 changer transitions 3/972 dead transitions. [2021-03-11 04:53:57,334 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 972 transitions, 42335 flow [2021-03-11 04:53:57,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 04:53:57,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 04:53:57,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 04:53:57,335 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 04:53:57,335 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 04:53:57,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 04:53:57,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:53:57,335 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 04:53:57,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:53:57,336 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:53:57,336 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:53:57,336 INFO L185 Difference]: Start difference. First operand has 414 places, 967 transitions, 40413 flow. Second operand 9 states and 674 transitions. [2021-03-11 04:53:57,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 972 transitions, 42335 flow [2021-03-11 04:54:00,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 972 transitions, 41206 flow, removed 12 selfloop flow, removed 8 redundant places. [2021-03-11 04:54:00,605 INFO L241 Difference]: Finished difference. Result has 414 places, 964 transitions, 40215 flow [2021-03-11 04:54:00,606 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=39294, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=967, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=533, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=434, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=40215, PETRI_PLACES=414, PETRI_TRANSITIONS=964} [2021-03-11 04:54:00,606 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 363 predicate places. [2021-03-11 04:54:00,606 INFO L480 AbstractCegarLoop]: Abstraction has has 414 places, 964 transitions, 40215 flow [2021-03-11 04:54:00,606 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:54:00,606 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:54:00,606 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:54:00,606 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-03-11 04:54:00,606 INFO L428 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:54:00,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:54:00,606 INFO L82 PathProgramCache]: Analyzing trace with hash 615566001, now seen corresponding path program 63 times [2021-03-11 04:54:00,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:54:00,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421546197] [2021-03-11 04:54:00,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:54:00,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:54:00,617 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:54:00,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:54:00,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:54:00,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:54:00,621 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 04:54:00,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 04:54:00,627 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 04:54:00,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 04:54:00,635 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 04:54:00,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 04:54:00,654 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 04:54:00,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 04:54:00,671 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 04:54:00,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 04:54:00,695 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:54:00,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:54:00,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:54:00,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421546197] [2021-03-11 04:54:00,715 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:54:00,715 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:54:00,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57467413] [2021-03-11 04:54:00,715 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:54:00,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:54:00,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:54:00,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:54:00,715 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:54:00,716 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 964 transitions, 40215 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:54:00,716 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:54:00,716 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:54:00,716 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:54:06,136 INFO L129 PetriNetUnfolder]: 505/13643 cut-off events. [2021-03-11 04:54:06,136 INFO L130 PetriNetUnfolder]: For 439703/443728 co-relation queries the response was YES. [2021-03-11 04:54:06,230 INFO L84 FinitePrefix]: Finished finitePrefix Result has 83371 conditions, 13643 events. 505/13643 cut-off events. For 439703/443728 co-relation queries the response was YES. Maximal size of possible extension queue 2293. Compared 255636 event pairs, 505 based on Foata normal form. 49/13168 useless extension candidates. Maximal degree in co-relation 83227. Up to 1781 conditions per place. [2021-03-11 04:54:06,259 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 397 selfloop transitions, 549 changer transitions 2/969 dead transitions. [2021-03-11 04:54:06,259 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 969 transitions, 42131 flow [2021-03-11 04:54:06,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 04:54:06,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 04:54:06,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 04:54:06,260 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 04:54:06,260 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 04:54:06,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 04:54:06,260 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:54:06,260 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 04:54:06,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:54:06,261 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:54:06,261 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:54:06,261 INFO L185 Difference]: Start difference. First operand has 414 places, 964 transitions, 40215 flow. Second operand 9 states and 674 transitions. [2021-03-11 04:54:06,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 969 transitions, 42131 flow [2021-03-11 04:54:09,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 969 transitions, 41133 flow, removed 10 selfloop flow, removed 6 redundant places. [2021-03-11 04:54:09,508 INFO L241 Difference]: Finished difference. Result has 416 places, 962 transitions, 40214 flow [2021-03-11 04:54:09,509 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=39227, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=964, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=549, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=415, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=40214, PETRI_PLACES=416, PETRI_TRANSITIONS=962} [2021-03-11 04:54:09,509 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 365 predicate places. [2021-03-11 04:54:09,509 INFO L480 AbstractCegarLoop]: Abstraction has has 416 places, 962 transitions, 40214 flow [2021-03-11 04:54:09,509 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:54:09,509 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:54:09,509 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:54:09,509 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-03-11 04:54:09,509 INFO L428 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:54:09,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:54:09,509 INFO L82 PathProgramCache]: Analyzing trace with hash -1723930901, now seen corresponding path program 64 times [2021-03-11 04:54:09,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:54:09,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331627529] [2021-03-11 04:54:09,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:54:09,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:54:09,522 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:54:09,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:54:09,522 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:54:09,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:54:09,526 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 04:54:09,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 04:54:09,531 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 04:54:09,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 04:54:09,540 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 04:54:09,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 04:54:09,551 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 04:54:09,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 04:54:09,569 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 04:54:09,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 04:54:09,592 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:54:09,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:54:09,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:54:09,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331627529] [2021-03-11 04:54:09,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:54:09,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:54:09,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053254399] [2021-03-11 04:54:09,612 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:54:09,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:54:09,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:54:09,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:54:09,613 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:54:09,613 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 962 transitions, 40214 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:54:09,613 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:54:09,613 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:54:09,613 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:54:15,062 INFO L129 PetriNetUnfolder]: 505/13631 cut-off events. [2021-03-11 04:54:15,062 INFO L130 PetriNetUnfolder]: For 438614/442639 co-relation queries the response was YES. [2021-03-11 04:54:15,148 INFO L84 FinitePrefix]: Finished finitePrefix Result has 83447 conditions, 13631 events. 505/13631 cut-off events. For 438614/442639 co-relation queries the response was YES. Maximal size of possible extension queue 2290. Compared 255339 event pairs, 505 based on Foata normal form. 49/13157 useless extension candidates. Maximal degree in co-relation 83304. Up to 1781 conditions per place. [2021-03-11 04:54:15,175 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 469 selfloop transitions, 501 changer transitions 1/992 dead transitions. [2021-03-11 04:54:15,175 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 992 transitions, 43372 flow [2021-03-11 04:54:15,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 04:54:15,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 04:54:15,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 04:54:15,176 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 04:54:15,176 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 04:54:15,176 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 04:54:15,176 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:54:15,176 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 04:54:15,177 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:54:15,177 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:54:15,177 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:54:15,177 INFO L185 Difference]: Start difference. First operand has 416 places, 962 transitions, 40214 flow. Second operand 9 states and 674 transitions. [2021-03-11 04:54:15,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 992 transitions, 43372 flow [2021-03-11 04:54:18,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 992 transitions, 42290 flow, removed 8 selfloop flow, removed 6 redundant places. [2021-03-11 04:54:18,366 INFO L241 Difference]: Finished difference. Result has 420 places, 978 transitions, 41016 flow [2021-03-11 04:54:18,367 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=39142, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=962, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=485, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=461, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=41016, PETRI_PLACES=420, PETRI_TRANSITIONS=978} [2021-03-11 04:54:18,367 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 369 predicate places. [2021-03-11 04:54:18,367 INFO L480 AbstractCegarLoop]: Abstraction has has 420 places, 978 transitions, 41016 flow [2021-03-11 04:54:18,367 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:54:18,367 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:54:18,367 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:54:18,367 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-03-11 04:54:18,367 INFO L428 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:54:18,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:54:18,367 INFO L82 PathProgramCache]: Analyzing trace with hash 1168988463, now seen corresponding path program 65 times [2021-03-11 04:54:18,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:54:18,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720726072] [2021-03-11 04:54:18,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:54:18,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:54:18,376 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:54:18,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:54:18,377 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:54:18,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:54:18,380 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 04:54:18,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 04:54:18,386 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 04:54:18,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 04:54:18,394 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 04:54:18,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 04:54:18,405 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 04:54:18,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 04:54:18,429 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 04:54:18,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 04:54:18,448 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:54:18,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:54:18,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:54:18,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720726072] [2021-03-11 04:54:18,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:54:18,467 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:54:18,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68801967] [2021-03-11 04:54:18,467 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:54:18,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:54:18,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:54:18,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:54:18,468 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:54:18,468 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 978 transitions, 41016 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:54:18,468 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:54:18,468 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:54:18,468 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:54:23,820 INFO L129 PetriNetUnfolder]: 505/13626 cut-off events. [2021-03-11 04:54:23,820 INFO L130 PetriNetUnfolder]: For 440967/444987 co-relation queries the response was YES. [2021-03-11 04:54:23,908 INFO L84 FinitePrefix]: Finished finitePrefix Result has 83479 conditions, 13626 events. 505/13626 cut-off events. For 440967/444987 co-relation queries the response was YES. Maximal size of possible extension queue 2273. Compared 255153 event pairs, 505 based on Foata normal form. 47/13150 useless extension candidates. Maximal degree in co-relation 83334. Up to 1781 conditions per place. [2021-03-11 04:54:23,936 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 477 selfloop transitions, 491 changer transitions 2/991 dead transitions. [2021-03-11 04:54:23,936 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 991 transitions, 43333 flow [2021-03-11 04:54:23,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 04:54:23,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 04:54:23,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 04:54:23,937 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 04:54:23,937 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 04:54:23,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 04:54:23,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:54:23,937 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 04:54:23,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:54:23,938 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:54:23,938 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:54:23,938 INFO L185 Difference]: Start difference. First operand has 420 places, 978 transitions, 41016 flow. Second operand 9 states and 674 transitions. [2021-03-11 04:54:23,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 991 transitions, 43333 flow [2021-03-11 04:54:27,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 991 transitions, 42386 flow, removed 18 selfloop flow, removed 5 redundant places. [2021-03-11 04:54:27,205 INFO L241 Difference]: Finished difference. Result has 424 places, 979 transitions, 41120 flow [2021-03-11 04:54:27,205 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=40079, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=978, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=489, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=487, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=41120, PETRI_PLACES=424, PETRI_TRANSITIONS=979} [2021-03-11 04:54:27,205 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 373 predicate places. [2021-03-11 04:54:27,206 INFO L480 AbstractCegarLoop]: Abstraction has has 424 places, 979 transitions, 41120 flow [2021-03-11 04:54:27,206 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:54:27,206 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:54:27,206 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:54:27,206 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-03-11 04:54:27,206 INFO L428 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:54:27,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:54:27,206 INFO L82 PathProgramCache]: Analyzing trace with hash 1670270737, now seen corresponding path program 66 times [2021-03-11 04:54:27,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:54:27,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308594496] [2021-03-11 04:54:27,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:54:27,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:54:27,227 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:54:27,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:54:27,228 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:54:27,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:54:27,231 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 04:54:27,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 04:54:27,238 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 04:54:27,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 04:54:27,248 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 04:54:27,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 04:54:27,260 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 04:54:27,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 04:54:27,279 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 04:54:27,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 04:54:27,300 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:54:27,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:54:27,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:54:27,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308594496] [2021-03-11 04:54:27,319 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:54:27,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:54:27,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230960686] [2021-03-11 04:54:27,319 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:54:27,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:54:27,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:54:27,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:54:27,320 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:54:27,320 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 979 transitions, 41120 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:54:27,320 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:54:27,320 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:54:27,320 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:54:32,753 INFO L129 PetriNetUnfolder]: 505/13616 cut-off events. [2021-03-11 04:54:32,753 INFO L130 PetriNetUnfolder]: For 441028/445048 co-relation queries the response was YES. [2021-03-11 04:54:32,978 INFO L84 FinitePrefix]: Finished finitePrefix Result has 83567 conditions, 13616 events. 505/13616 cut-off events. For 441028/445048 co-relation queries the response was YES. Maximal size of possible extension queue 2271. Compared 254934 event pairs, 505 based on Foata normal form. 47/13140 useless extension candidates. Maximal degree in co-relation 83421. Up to 1781 conditions per place. [2021-03-11 04:54:33,004 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 470 selfloop transitions, 496 changer transitions 2/989 dead transitions. [2021-03-11 04:54:33,004 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 989 transitions, 43300 flow [2021-03-11 04:54:33,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 04:54:33,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 04:54:33,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 04:54:33,005 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 04:54:33,005 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 04:54:33,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 04:54:33,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:54:33,005 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 04:54:33,006 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:54:33,006 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:54:33,006 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:54:33,006 INFO L185 Difference]: Start difference. First operand has 424 places, 979 transitions, 41120 flow. Second operand 9 states and 674 transitions. [2021-03-11 04:54:33,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 989 transitions, 43300 flow [2021-03-11 04:54:36,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 989 transitions, 42325 flow, removed 8 selfloop flow, removed 6 redundant places. [2021-03-11 04:54:36,216 INFO L241 Difference]: Finished difference. Result has 427 places, 979 transitions, 41174 flow [2021-03-11 04:54:36,216 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=40155, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=979, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=494, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=483, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=41174, PETRI_PLACES=427, PETRI_TRANSITIONS=979} [2021-03-11 04:54:36,216 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 376 predicate places. [2021-03-11 04:54:36,216 INFO L480 AbstractCegarLoop]: Abstraction has has 427 places, 979 transitions, 41174 flow [2021-03-11 04:54:36,217 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:54:36,217 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:54:36,217 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:54:36,217 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-03-11 04:54:36,217 INFO L428 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:54:36,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:54:36,217 INFO L82 PathProgramCache]: Analyzing trace with hash -1552260927, now seen corresponding path program 67 times [2021-03-11 04:54:36,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:54:36,217 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962156098] [2021-03-11 04:54:36,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:54:36,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:54:36,230 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:54:36,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:54:36,231 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:54:36,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:54:36,234 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 04:54:36,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 04:54:36,240 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 04:54:36,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 04:54:36,249 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 04:54:36,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 04:54:36,268 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 04:54:36,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 04:54:36,284 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 04:54:36,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 04:54:36,304 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:54:36,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:54:36,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:54:36,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962156098] [2021-03-11 04:54:36,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:54:36,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:54:36,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700241214] [2021-03-11 04:54:36,323 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:54:36,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:54:36,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:54:36,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:54:36,324 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:54:36,324 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 979 transitions, 41174 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:54:36,324 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:54:36,324 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:54:36,324 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:54:41,713 INFO L129 PetriNetUnfolder]: 505/13601 cut-off events. [2021-03-11 04:54:41,713 INFO L130 PetriNetUnfolder]: For 440931/444951 co-relation queries the response was YES. [2021-03-11 04:54:41,804 INFO L84 FinitePrefix]: Finished finitePrefix Result has 83482 conditions, 13601 events. 505/13601 cut-off events. For 440931/444951 co-relation queries the response was YES. Maximal size of possible extension queue 2267. Compared 254584 event pairs, 505 based on Foata normal form. 47/13126 useless extension candidates. Maximal degree in co-relation 83335. Up to 1781 conditions per place. [2021-03-11 04:54:41,831 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 476 selfloop transitions, 488 changer transitions 2/987 dead transitions. [2021-03-11 04:54:41,832 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 987 transitions, 43245 flow [2021-03-11 04:54:41,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 04:54:41,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 04:54:41,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 04:54:41,833 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 04:54:41,833 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 04:54:41,833 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 04:54:41,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:54:41,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 04:54:41,833 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:54:41,834 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:54:41,834 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:54:41,834 INFO L185 Difference]: Start difference. First operand has 427 places, 979 transitions, 41174 flow. Second operand 9 states and 674 transitions. [2021-03-11 04:54:41,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 987 transitions, 43245 flow [2021-03-11 04:54:45,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 987 transitions, 42443 flow, removed 9 selfloop flow, removed 6 redundant places. [2021-03-11 04:54:45,211 INFO L241 Difference]: Finished difference. Result has 430 places, 980 transitions, 41414 flow [2021-03-11 04:54:45,212 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=40382, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=979, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=485, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=491, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=41414, PETRI_PLACES=430, PETRI_TRANSITIONS=980} [2021-03-11 04:54:45,212 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 379 predicate places. [2021-03-11 04:54:45,212 INFO L480 AbstractCegarLoop]: Abstraction has has 430 places, 980 transitions, 41414 flow [2021-03-11 04:54:45,212 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:54:45,212 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:54:45,212 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:54:45,212 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-03-11 04:54:45,212 INFO L428 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:54:45,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:54:45,212 INFO L82 PathProgramCache]: Analyzing trace with hash 469447451, now seen corresponding path program 68 times [2021-03-11 04:54:45,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:54:45,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752219654] [2021-03-11 04:54:45,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:54:45,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:54:45,221 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:54:45,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:54:45,222 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:54:45,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:54:45,225 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 04:54:45,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 04:54:45,231 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 04:54:45,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 04:54:45,239 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 04:54:45,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 04:54:45,250 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 04:54:45,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 04:54:45,265 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 04:54:45,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 04:54:45,287 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:54:45,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:54:45,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:54:45,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752219654] [2021-03-11 04:54:45,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:54:45,306 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:54:45,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064176023] [2021-03-11 04:54:45,306 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:54:45,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:54:45,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:54:45,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:54:45,307 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:54:45,307 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 980 transitions, 41414 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:54:45,307 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:54:45,307 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:54:45,307 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:54:50,941 INFO L129 PetriNetUnfolder]: 505/13591 cut-off events. [2021-03-11 04:54:50,941 INFO L130 PetriNetUnfolder]: For 444409/448434 co-relation queries the response was YES. [2021-03-11 04:54:51,026 INFO L84 FinitePrefix]: Finished finitePrefix Result has 83912 conditions, 13591 events. 505/13591 cut-off events. For 444409/448434 co-relation queries the response was YES. Maximal size of possible extension queue 2281. Compared 254473 event pairs, 505 based on Foata normal form. 49/13118 useless extension candidates. Maximal degree in co-relation 83765. Up to 1781 conditions per place. [2021-03-11 04:54:51,052 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 478 selfloop transitions, 485 changer transitions 1/985 dead transitions. [2021-03-11 04:54:51,052 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 985 transitions, 43362 flow [2021-03-11 04:54:51,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 04:54:51,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 04:54:51,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 04:54:51,053 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 04:54:51,053 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 04:54:51,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 04:54:51,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:54:51,054 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 04:54:51,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:54:51,055 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:54:51,055 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:54:51,055 INFO L185 Difference]: Start difference. First operand has 430 places, 980 transitions, 41414 flow. Second operand 9 states and 674 transitions. [2021-03-11 04:54:51,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 985 transitions, 43362 flow [2021-03-11 04:54:54,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 985 transitions, 42433 flow, removed 9 selfloop flow, removed 5 redundant places. [2021-03-11 04:54:54,362 INFO L241 Difference]: Finished difference. Result has 433 places, 979 transitions, 41401 flow [2021-03-11 04:54:54,363 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=40495, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=980, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=485, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=495, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=41401, PETRI_PLACES=433, PETRI_TRANSITIONS=979} [2021-03-11 04:54:54,363 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 382 predicate places. [2021-03-11 04:54:54,363 INFO L480 AbstractCegarLoop]: Abstraction has has 433 places, 979 transitions, 41401 flow [2021-03-11 04:54:54,363 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:54:54,363 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:54:54,363 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:54:54,363 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-03-11 04:54:54,363 INFO L428 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:54:54,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:54:54,363 INFO L82 PathProgramCache]: Analyzing trace with hash -537909315, now seen corresponding path program 69 times [2021-03-11 04:54:54,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:54:54,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732575804] [2021-03-11 04:54:54,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:54:54,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:54:54,372 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:54:54,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:54:54,372 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:54:54,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:54:54,375 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 04:54:54,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 04:54:54,380 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 04:54:54,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 04:54:54,389 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 04:54:54,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 04:54:54,408 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 04:54:54,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 04:54:54,424 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 04:54:54,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 04:54:54,444 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:54:54,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:54:54,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:54:54,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732575804] [2021-03-11 04:54:54,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:54:54,463 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:54:54,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396207246] [2021-03-11 04:54:54,463 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:54:54,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:54:54,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:54:54,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:54:54,464 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:54:54,464 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 979 transitions, 41401 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:54:54,464 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:54:54,464 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:54:54,464 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:55:00,024 INFO L129 PetriNetUnfolder]: 487/13832 cut-off events. [2021-03-11 04:55:00,024 INFO L130 PetriNetUnfolder]: For 451783/455808 co-relation queries the response was YES. [2021-03-11 04:55:00,110 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85309 conditions, 13832 events. 487/13832 cut-off events. For 451783/455808 co-relation queries the response was YES. Maximal size of possible extension queue 2325. Compared 260389 event pairs, 487 based on Foata normal form. 45/13337 useless extension candidates. Maximal degree in co-relation 85162. Up to 1980 conditions per place. [2021-03-11 04:55:00,136 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 661 selfloop transitions, 412 changer transitions 1/1095 dead transitions. [2021-03-11 04:55:00,136 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 1095 transitions, 48479 flow [2021-03-11 04:55:00,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 04:55:00,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 04:55:00,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 04:55:00,137 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 04:55:00,137 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 04:55:00,137 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 04:55:00,137 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:55:00,137 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 04:55:00,138 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:55:00,138 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:55:00,138 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:55:00,138 INFO L185 Difference]: Start difference. First operand has 433 places, 979 transitions, 41401 flow. Second operand 9 states and 674 transitions. [2021-03-11 04:55:00,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 1095 transitions, 48479 flow [2021-03-11 04:55:03,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 1095 transitions, 47475 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-03-11 04:55:03,704 INFO L241 Difference]: Finished difference. Result has 439 places, 994 transitions, 42141 flow [2021-03-11 04:55:03,705 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=40445, PETRI_DIFFERENCE_MINUEND_PLACES=426, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=979, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=397, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=567, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=42141, PETRI_PLACES=439, PETRI_TRANSITIONS=994} [2021-03-11 04:55:03,705 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 388 predicate places. [2021-03-11 04:55:03,705 INFO L480 AbstractCegarLoop]: Abstraction has has 439 places, 994 transitions, 42141 flow [2021-03-11 04:55:03,705 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:55:03,705 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:55:03,705 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:55:03,705 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-03-11 04:55:03,705 INFO L428 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:55:03,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:55:03,705 INFO L82 PathProgramCache]: Analyzing trace with hash 498903389, now seen corresponding path program 70 times [2021-03-11 04:55:03,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:55:03,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775304079] [2021-03-11 04:55:03,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:55:03,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:55:03,719 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:55:03,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:55:03,719 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:55:03,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:55:03,723 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 04:55:03,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 04:55:03,729 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 04:55:03,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 04:55:03,737 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 04:55:03,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 04:55:03,757 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 04:55:03,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 04:55:03,773 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 04:55:03,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 04:55:03,798 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:55:03,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:55:03,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:55:03,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775304079] [2021-03-11 04:55:03,818 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:55:03,818 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:55:03,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420717611] [2021-03-11 04:55:03,818 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:55:03,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:55:03,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:55:03,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:55:03,819 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:55:03,819 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 994 transitions, 42141 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:55:03,819 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:55:03,819 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:55:03,819 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:55:09,376 INFO L129 PetriNetUnfolder]: 487/13840 cut-off events. [2021-03-11 04:55:09,376 INFO L130 PetriNetUnfolder]: For 463365/467396 co-relation queries the response was YES. [2021-03-11 04:55:09,509 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85652 conditions, 13840 events. 487/13840 cut-off events. For 463365/467396 co-relation queries the response was YES. Maximal size of possible extension queue 2324. Compared 260683 event pairs, 463 based on Foata normal form. 45/13339 useless extension candidates. Maximal degree in co-relation 85501. Up to 1873 conditions per place. [2021-03-11 04:55:09,539 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 592 selfloop transitions, 453 changer transitions 1/1067 dead transitions. [2021-03-11 04:55:09,539 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 1067 transitions, 47229 flow [2021-03-11 04:55:09,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 04:55:09,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 04:55:09,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 04:55:09,540 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 04:55:09,540 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 04:55:09,540 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 04:55:09,540 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:55:09,540 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 04:55:09,541 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:55:09,541 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:55:09,541 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:55:09,541 INFO L185 Difference]: Start difference. First operand has 439 places, 994 transitions, 42141 flow. Second operand 9 states and 674 transitions. [2021-03-11 04:55:09,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 1067 transitions, 47229 flow [2021-03-11 04:55:13,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 1067 transitions, 46517 flow, removed 27 selfloop flow, removed 4 redundant places. [2021-03-11 04:55:13,237 INFO L241 Difference]: Finished difference. Result has 447 places, 1031 transitions, 44298 flow [2021-03-11 04:55:13,238 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=41473, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=994, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=416, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=541, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=44298, PETRI_PLACES=447, PETRI_TRANSITIONS=1031} [2021-03-11 04:55:13,238 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 396 predicate places. [2021-03-11 04:55:13,238 INFO L480 AbstractCegarLoop]: Abstraction has has 447 places, 1031 transitions, 44298 flow [2021-03-11 04:55:13,238 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:55:13,238 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:55:13,238 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:55:13,238 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-03-11 04:55:13,238 INFO L428 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:55:13,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:55:13,239 INFO L82 PathProgramCache]: Analyzing trace with hash -1764040181, now seen corresponding path program 71 times [2021-03-11 04:55:13,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:55:13,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72998168] [2021-03-11 04:55:13,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:55:13,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:55:13,248 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:55:13,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:55:13,249 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:55:13,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:55:13,252 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 04:55:13,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 04:55:13,258 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 04:55:13,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 04:55:13,267 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 04:55:13,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 04:55:13,278 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 04:55:13,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 04:55:13,304 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 04:55:13,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 04:55:13,325 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:55:13,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:55:13,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:55:13,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72998168] [2021-03-11 04:55:13,344 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:55:13,344 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:55:13,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704000545] [2021-03-11 04:55:13,344 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:55:13,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:55:13,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:55:13,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:55:13,344 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:55:13,345 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 1031 transitions, 44298 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:55:13,345 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:55:13,345 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:55:13,345 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:55:19,351 INFO L129 PetriNetUnfolder]: 463/14122 cut-off events. [2021-03-11 04:55:19,351 INFO L130 PetriNetUnfolder]: For 484527/488552 co-relation queries the response was YES. [2021-03-11 04:55:19,444 INFO L84 FinitePrefix]: Finished finitePrefix Result has 87905 conditions, 14122 events. 463/14122 cut-off events. For 484527/488552 co-relation queries the response was YES. Maximal size of possible extension queue 2388. Compared 267458 event pairs, 463 based on Foata normal form. 45/13609 useless extension candidates. Maximal degree in co-relation 87750. Up to 1963 conditions per place. [2021-03-11 04:55:19,472 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 663 selfloop transitions, 428 changer transitions 2/1114 dead transitions. [2021-03-11 04:55:19,472 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 1114 transitions, 50098 flow [2021-03-11 04:55:19,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 04:55:19,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 04:55:19,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 04:55:19,473 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 04:55:19,473 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 04:55:19,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 04:55:19,473 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:55:19,473 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 04:55:19,474 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:55:19,474 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:55:19,474 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:55:19,474 INFO L185 Difference]: Start difference. First operand has 447 places, 1031 transitions, 44298 flow. Second operand 9 states and 674 transitions. [2021-03-11 04:55:19,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 1114 transitions, 50098 flow [2021-03-11 04:55:23,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 1114 transitions, 49293 flow, removed 61 selfloop flow, removed 4 redundant places. [2021-03-11 04:55:23,228 INFO L241 Difference]: Finished difference. Result has 455 places, 1058 transitions, 45852 flow [2021-03-11 04:55:23,228 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=43539, PETRI_DIFFERENCE_MINUEND_PLACES=442, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1031, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=401, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=603, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=45852, PETRI_PLACES=455, PETRI_TRANSITIONS=1058} [2021-03-11 04:55:23,228 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 404 predicate places. [2021-03-11 04:55:23,228 INFO L480 AbstractCegarLoop]: Abstraction has has 455 places, 1058 transitions, 45852 flow [2021-03-11 04:55:23,229 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:55:23,229 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:55:23,229 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:55:23,229 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-03-11 04:55:23,229 INFO L428 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:55:23,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:55:23,229 INFO L82 PathProgramCache]: Analyzing trace with hash 1638020797, now seen corresponding path program 72 times [2021-03-11 04:55:23,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:55:23,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187460485] [2021-03-11 04:55:23,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:55:23,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:55:23,237 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:55:23,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:55:23,238 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:55:23,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:55:23,241 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 04:55:23,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 04:55:23,247 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 04:55:23,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 04:55:23,263 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 04:55:23,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 04:55:23,276 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 04:55:23,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 04:55:23,303 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 04:55:23,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 04:55:23,323 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:55:23,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:55:23,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:55:23,343 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187460485] [2021-03-11 04:55:23,343 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:55:23,343 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:55:23,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228610514] [2021-03-11 04:55:23,343 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:55:23,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:55:23,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:55:23,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:55:23,344 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:55:23,344 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 455 places, 1058 transitions, 45852 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:55:23,344 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:55:23,344 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:55:23,344 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:55:29,547 INFO L129 PetriNetUnfolder]: 463/14112 cut-off events. [2021-03-11 04:55:29,548 INFO L130 PetriNetUnfolder]: For 495349/499402 co-relation queries the response was YES. [2021-03-11 04:55:29,648 INFO L84 FinitePrefix]: Finished finitePrefix Result has 88636 conditions, 14112 events. 463/14112 cut-off events. For 495349/499402 co-relation queries the response was YES. Maximal size of possible extension queue 2386. Compared 267209 event pairs, 463 based on Foata normal form. 45/13599 useless extension candidates. Maximal degree in co-relation 88477. Up to 1873 conditions per place. [2021-03-11 04:55:29,676 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 596 selfloop transitions, 473 changer transitions 2/1092 dead transitions. [2021-03-11 04:55:29,676 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 1092 transitions, 49301 flow [2021-03-11 04:55:29,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 04:55:29,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 04:55:29,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 04:55:29,677 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 04:55:29,677 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 04:55:29,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 04:55:29,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:55:29,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 04:55:29,678 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:55:29,678 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:55:29,678 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:55:29,679 INFO L185 Difference]: Start difference. First operand has 455 places, 1058 transitions, 45852 flow. Second operand 9 states and 674 transitions. [2021-03-11 04:55:29,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 1092 transitions, 49301 flow [2021-03-11 04:55:33,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 1092 transitions, 48860 flow, removed 23 selfloop flow, removed 6 redundant places. [2021-03-11 04:55:33,865 INFO L241 Difference]: Finished difference. Result has 459 places, 1067 transitions, 46991 flow [2021-03-11 04:55:33,866 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=45421, PETRI_DIFFERENCE_MINUEND_PLACES=448, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1058, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=463, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=585, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=46991, PETRI_PLACES=459, PETRI_TRANSITIONS=1067} [2021-03-11 04:55:33,866 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 408 predicate places. [2021-03-11 04:55:33,866 INFO L480 AbstractCegarLoop]: Abstraction has has 459 places, 1067 transitions, 46991 flow [2021-03-11 04:55:33,866 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:55:33,866 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:55:33,866 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:55:33,866 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-03-11 04:55:33,866 INFO L428 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:55:33,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:55:33,866 INFO L82 PathProgramCache]: Analyzing trace with hash 786331829, now seen corresponding path program 73 times [2021-03-11 04:55:33,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:55:33,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817817420] [2021-03-11 04:55:33,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:55:33,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:55:33,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:55:33,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:55:33,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:55:33,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:55:33,895 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 04:55:33,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 04:55:33,900 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 04:55:33,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 04:55:33,908 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 04:55:33,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 04:55:33,926 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 04:55:33,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 04:55:33,942 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 04:55:33,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 04:55:33,965 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:55:33,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:55:33,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:55:33,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817817420] [2021-03-11 04:55:33,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:55:33,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:55:33,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134474258] [2021-03-11 04:55:33,987 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:55:33,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:55:33,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:55:33,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:55:33,988 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:55:33,989 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 1067 transitions, 46991 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:55:33,989 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:55:33,989 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:55:33,989 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:55:40,221 INFO L129 PetriNetUnfolder]: 463/14102 cut-off events. [2021-03-11 04:55:40,221 INFO L130 PetriNetUnfolder]: For 511387/515308 co-relation queries the response was YES. [2021-03-11 04:55:40,319 INFO L84 FinitePrefix]: Finished finitePrefix Result has 89841 conditions, 14102 events. 463/14102 cut-off events. For 511387/515308 co-relation queries the response was YES. Maximal size of possible extension queue 2384. Compared 267033 event pairs, 463 based on Foata normal form. 45/13589 useless extension candidates. Maximal degree in co-relation 89683. Up to 1873 conditions per place. [2021-03-11 04:55:40,350 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 600 selfloop transitions, 473 changer transitions 2/1096 dead transitions. [2021-03-11 04:55:40,350 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 466 places, 1096 transitions, 50228 flow [2021-03-11 04:55:40,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 04:55:40,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 04:55:40,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 04:55:40,351 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 04:55:40,351 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 04:55:40,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 04:55:40,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:55:40,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 04:55:40,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:55:40,352 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:55:40,353 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:55:40,353 INFO L185 Difference]: Start difference. First operand has 459 places, 1067 transitions, 46991 flow. Second operand 9 states and 674 transitions. [2021-03-11 04:55:40,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 466 places, 1096 transitions, 50228 flow [2021-03-11 04:55:44,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 462 places, 1096 transitions, 49736 flow, removed 27 selfloop flow, removed 4 redundant places. [2021-03-11 04:55:44,538 INFO L241 Difference]: Finished difference. Result has 464 places, 1069 transitions, 47555 flow [2021-03-11 04:55:44,539 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=46512, PETRI_DIFFERENCE_MINUEND_PLACES=454, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1067, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=470, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=594, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=47555, PETRI_PLACES=464, PETRI_TRANSITIONS=1069} [2021-03-11 04:55:44,539 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 413 predicate places. [2021-03-11 04:55:44,539 INFO L480 AbstractCegarLoop]: Abstraction has has 464 places, 1069 transitions, 47555 flow [2021-03-11 04:55:44,539 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:55:44,539 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:55:44,539 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:55:44,539 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-03-11 04:55:44,539 INFO L428 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:55:44,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:55:44,539 INFO L82 PathProgramCache]: Analyzing trace with hash -1947670393, now seen corresponding path program 74 times [2021-03-11 04:55:44,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:55:44,539 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050605351] [2021-03-11 04:55:44,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:55:44,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:55:44,549 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:55:44,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:55:44,549 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:55:44,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:55:44,553 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 04:55:44,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 04:55:44,560 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 04:55:44,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 04:55:44,569 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 04:55:44,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 04:55:44,589 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 04:55:44,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 04:55:44,615 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 04:55:44,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 04:55:44,636 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:55:44,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:55:44,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:55:44,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050605351] [2021-03-11 04:55:44,655 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:55:44,655 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:55:44,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134797143] [2021-03-11 04:55:44,655 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:55:44,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:55:44,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:55:44,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:55:44,656 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:55:44,656 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 464 places, 1069 transitions, 47555 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:55:44,656 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:55:44,656 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:55:44,656 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:55:50,872 INFO L129 PetriNetUnfolder]: 463/14092 cut-off events. [2021-03-11 04:55:50,873 INFO L130 PetriNetUnfolder]: For 515773/519826 co-relation queries the response was YES. [2021-03-11 04:55:50,962 INFO L84 FinitePrefix]: Finished finitePrefix Result has 90679 conditions, 14092 events. 463/14092 cut-off events. For 515773/519826 co-relation queries the response was YES. Maximal size of possible extension queue 2382. Compared 266734 event pairs, 463 based on Foata normal form. 45/13579 useless extension candidates. Maximal degree in co-relation 90521. Up to 1873 conditions per place. [2021-03-11 04:55:50,989 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 586 selfloop transitions, 485 changer transitions 2/1094 dead transitions. [2021-03-11 04:55:50,990 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 1094 transitions, 50615 flow [2021-03-11 04:55:50,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 04:55:50,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 04:55:50,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 04:55:50,991 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 04:55:50,991 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 04:55:50,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 04:55:50,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:55:50,991 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 04:55:50,991 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:55:50,992 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:55:50,992 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:55:50,992 INFO L185 Difference]: Start difference. First operand has 464 places, 1069 transitions, 47555 flow. Second operand 9 states and 674 transitions. [2021-03-11 04:55:50,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 471 places, 1094 transitions, 50615 flow [2021-03-11 04:55:55,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 464 places, 1094 transitions, 49535 flow, removed 9 selfloop flow, removed 7 redundant places. [2021-03-11 04:55:55,095 INFO L241 Difference]: Finished difference. Result has 467 places, 1078 transitions, 48005 flow [2021-03-11 04:55:55,096 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=46488, PETRI_DIFFERENCE_MINUEND_PLACES=456, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1069, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=475, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=584, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=48005, PETRI_PLACES=467, PETRI_TRANSITIONS=1078} [2021-03-11 04:55:55,096 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 416 predicate places. [2021-03-11 04:55:55,096 INFO L480 AbstractCegarLoop]: Abstraction has has 467 places, 1078 transitions, 48005 flow [2021-03-11 04:55:55,096 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:55:55,096 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:55:55,096 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:55:55,096 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-03-11 04:55:55,096 INFO L428 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:55:55,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:55:55,096 INFO L82 PathProgramCache]: Analyzing trace with hash 997978321, now seen corresponding path program 75 times [2021-03-11 04:55:55,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:55:55,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868751907] [2021-03-11 04:55:55,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:55:55,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:55:55,105 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:55:55,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:55:55,106 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:55:55,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:55:55,109 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 04:55:55,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 04:55:55,114 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 04:55:55,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 04:55:55,122 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 04:55:55,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 04:55:55,133 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 04:55:55,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 04:55:55,151 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 04:55:55,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 04:55:55,176 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:55:55,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:55:55,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:55:55,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868751907] [2021-03-11 04:55:55,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:55:55,198 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:55:55,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579500503] [2021-03-11 04:55:55,198 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:55:55,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:55:55,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:55:55,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:55:55,198 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:55:55,199 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 1078 transitions, 48005 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:55:55,199 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:55:55,199 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:55:55,199 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:56:01,436 INFO L129 PetriNetUnfolder]: 463/14082 cut-off events. [2021-03-11 04:56:01,436 INFO L130 PetriNetUnfolder]: For 518733/522786 co-relation queries the response was YES. [2021-03-11 04:56:01,535 INFO L84 FinitePrefix]: Finished finitePrefix Result has 90563 conditions, 14082 events. 463/14082 cut-off events. For 518733/522786 co-relation queries the response was YES. Maximal size of possible extension queue 2380. Compared 266529 event pairs, 463 based on Foata normal form. 45/13569 useless extension candidates. Maximal degree in co-relation 90403. Up to 1873 conditions per place. [2021-03-11 04:56:01,563 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 613 selfloop transitions, 469 changer transitions 2/1105 dead transitions. [2021-03-11 04:56:01,564 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 1105 transitions, 51172 flow [2021-03-11 04:56:01,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 04:56:01,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 04:56:01,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 04:56:01,565 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 04:56:01,565 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 04:56:01,565 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 04:56:01,565 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:56:01,565 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 04:56:01,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:56:01,566 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:56:01,566 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:56:01,566 INFO L185 Difference]: Start difference. First operand has 467 places, 1078 transitions, 48005 flow. Second operand 9 states and 674 transitions. [2021-03-11 04:56:01,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 1105 transitions, 51172 flow [2021-03-11 04:56:05,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 1105 transitions, 50185 flow, removed 20 selfloop flow, removed 6 redundant places. [2021-03-11 04:56:05,797 INFO L241 Difference]: Finished difference. Result has 471 places, 1086 transitions, 48441 flow [2021-03-11 04:56:05,798 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=47042, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1078, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=460, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=609, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=48441, PETRI_PLACES=471, PETRI_TRANSITIONS=1086} [2021-03-11 04:56:05,798 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 420 predicate places. [2021-03-11 04:56:05,798 INFO L480 AbstractCegarLoop]: Abstraction has has 471 places, 1086 transitions, 48441 flow [2021-03-11 04:56:05,798 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:56:05,798 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:56:05,798 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:56:05,798 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-03-11 04:56:05,798 INFO L428 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:56:05,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:56:05,799 INFO L82 PathProgramCache]: Analyzing trace with hash 1115831239, now seen corresponding path program 76 times [2021-03-11 04:56:05,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:56:05,799 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802958677] [2021-03-11 04:56:05,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:56:05,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:56:05,808 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:56:05,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:56:05,808 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:56:05,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:56:05,811 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 04:56:05,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 04:56:05,817 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 04:56:05,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 04:56:05,831 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 04:56:05,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 04:56:05,842 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 04:56:05,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 04:56:05,857 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 04:56:05,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 04:56:05,877 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:56:05,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:56:05,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:56:05,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802958677] [2021-03-11 04:56:05,896 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:56:05,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:56:05,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019463697] [2021-03-11 04:56:05,896 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:56:05,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:56:05,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:56:05,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:56:05,897 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:56:05,897 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 1086 transitions, 48441 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:56:05,897 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:56:05,897 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:56:05,897 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:56:12,216 INFO L129 PetriNetUnfolder]: 463/14072 cut-off events. [2021-03-11 04:56:12,216 INFO L130 PetriNetUnfolder]: For 522464/526517 co-relation queries the response was YES. [2021-03-11 04:56:12,318 INFO L84 FinitePrefix]: Finished finitePrefix Result has 90594 conditions, 14072 events. 463/14072 cut-off events. For 522464/526517 co-relation queries the response was YES. Maximal size of possible extension queue 2378. Compared 266362 event pairs, 463 based on Foata normal form. 45/13559 useless extension candidates. Maximal degree in co-relation 90432. Up to 1873 conditions per place. [2021-03-11 04:56:12,348 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 609 selfloop transitions, 471 changer transitions 2/1103 dead transitions. [2021-03-11 04:56:12,349 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 1103 transitions, 51147 flow [2021-03-11 04:56:12,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 04:56:12,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 04:56:12,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 04:56:12,349 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 04:56:12,350 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 04:56:12,350 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 04:56:12,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:56:12,350 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 04:56:12,350 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:56:12,351 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:56:12,351 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:56:12,351 INFO L185 Difference]: Start difference. First operand has 471 places, 1086 transitions, 48441 flow. Second operand 9 states and 674 transitions. [2021-03-11 04:56:12,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 1103 transitions, 51147 flow [2021-03-11 04:56:16,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 473 places, 1103 transitions, 50285 flow, removed 12 selfloop flow, removed 5 redundant places. [2021-03-11 04:56:16,671 INFO L241 Difference]: Finished difference. Result has 475 places, 1096 transitions, 49028 flow [2021-03-11 04:56:16,672 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=47589, PETRI_DIFFERENCE_MINUEND_PLACES=465, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1086, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=459, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=615, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=49028, PETRI_PLACES=475, PETRI_TRANSITIONS=1096} [2021-03-11 04:56:16,672 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 424 predicate places. [2021-03-11 04:56:16,672 INFO L480 AbstractCegarLoop]: Abstraction has has 475 places, 1096 transitions, 49028 flow [2021-03-11 04:56:16,672 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:56:16,672 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:56:16,673 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:56:16,673 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-03-11 04:56:16,673 INFO L428 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:56:16,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:56:16,673 INFO L82 PathProgramCache]: Analyzing trace with hash 2137769039, now seen corresponding path program 77 times [2021-03-11 04:56:16,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:56:16,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540142821] [2021-03-11 04:56:16,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:56:16,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:56:16,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:56:16,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:56:16,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:56:16,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:56:16,686 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 04:56:16,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 04:56:16,691 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 04:56:16,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 04:56:16,700 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 04:56:16,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 04:56:16,711 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 04:56:16,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 04:56:16,728 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 04:56:16,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 04:56:16,752 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:56:16,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:56:16,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:56:16,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540142821] [2021-03-11 04:56:16,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:56:16,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:56:16,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762778856] [2021-03-11 04:56:16,773 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:56:16,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:56:16,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:56:16,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:56:16,774 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:56:16,774 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 1096 transitions, 49028 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:56:16,774 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:56:16,774 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:56:16,774 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:56:23,252 INFO L129 PetriNetUnfolder]: 463/14063 cut-off events. [2021-03-11 04:56:23,253 INFO L130 PetriNetUnfolder]: For 525200/529253 co-relation queries the response was YES. [2021-03-11 04:56:23,345 INFO L84 FinitePrefix]: Finished finitePrefix Result has 90737 conditions, 14063 events. 463/14063 cut-off events. For 525200/529253 co-relation queries the response was YES. Maximal size of possible extension queue 2376. Compared 266163 event pairs, 463 based on Foata normal form. 45/13551 useless extension candidates. Maximal degree in co-relation 90574. Up to 1873 conditions per place. [2021-03-11 04:56:23,373 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 609 selfloop transitions, 468 changer transitions 3/1101 dead transitions. [2021-03-11 04:56:23,373 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 1101 transitions, 51208 flow [2021-03-11 04:56:23,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 04:56:23,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 04:56:23,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 04:56:23,374 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 04:56:23,374 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 04:56:23,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 04:56:23,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:56:23,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 04:56:23,375 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:56:23,375 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:56:23,375 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:56:23,375 INFO L185 Difference]: Start difference. First operand has 475 places, 1096 transitions, 49028 flow. Second operand 9 states and 674 transitions. [2021-03-11 04:56:23,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 1101 transitions, 51208 flow [2021-03-11 04:56:27,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 477 places, 1101 transitions, 50310 flow, removed 30 selfloop flow, removed 5 redundant places. [2021-03-11 04:56:27,544 INFO L241 Difference]: Finished difference. Result has 478 places, 1093 transitions, 48914 flow [2021-03-11 04:56:27,545 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=48140, PETRI_DIFFERENCE_MINUEND_PLACES=469, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1096, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=468, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=628, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=48914, PETRI_PLACES=478, PETRI_TRANSITIONS=1093} [2021-03-11 04:56:27,545 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 427 predicate places. [2021-03-11 04:56:27,545 INFO L480 AbstractCegarLoop]: Abstraction has has 478 places, 1093 transitions, 48914 flow [2021-03-11 04:56:27,545 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:56:27,545 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:56:27,545 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:56:27,545 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-03-11 04:56:27,545 INFO L428 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:56:27,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:56:27,545 INFO L82 PathProgramCache]: Analyzing trace with hash 111630085, now seen corresponding path program 78 times [2021-03-11 04:56:27,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:56:27,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842553665] [2021-03-11 04:56:27,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:56:27,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:56:27,557 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:56:27,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:56:27,557 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:56:27,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:56:27,560 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 04:56:27,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 04:56:27,566 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 04:56:27,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 04:56:27,574 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 04:56:27,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 04:56:27,586 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 04:56:27,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 04:56:27,602 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 04:56:27,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 04:56:27,621 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:56:27,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:56:27,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:56:27,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842553665] [2021-03-11 04:56:27,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:56:27,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:56:27,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660735181] [2021-03-11 04:56:27,640 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:56:27,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:56:27,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:56:27,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:56:27,641 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:56:27,641 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 478 places, 1093 transitions, 48914 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:56:27,641 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:56:27,641 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:56:27,641 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:56:33,860 INFO L129 PetriNetUnfolder]: 463/14051 cut-off events. [2021-03-11 04:56:33,861 INFO L130 PetriNetUnfolder]: For 523966/528019 co-relation queries the response was YES. [2021-03-11 04:56:33,963 INFO L84 FinitePrefix]: Finished finitePrefix Result has 90773 conditions, 14051 events. 463/14051 cut-off events. For 523966/528019 co-relation queries the response was YES. Maximal size of possible extension queue 2373. Compared 265830 event pairs, 463 based on Foata normal form. 45/13539 useless extension candidates. Maximal degree in co-relation 90610. Up to 1873 conditions per place. [2021-03-11 04:56:33,992 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 543 selfloop transitions, 532 changer transitions 2/1098 dead transitions. [2021-03-11 04:56:33,992 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 485 places, 1098 transitions, 51088 flow [2021-03-11 04:56:33,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 04:56:33,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 04:56:33,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 04:56:33,993 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 04:56:33,993 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 04:56:33,993 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 04:56:33,994 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:56:33,994 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 04:56:33,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:56:33,994 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:56:33,994 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:56:33,994 INFO L185 Difference]: Start difference. First operand has 478 places, 1093 transitions, 48914 flow. Second operand 9 states and 674 transitions. [2021-03-11 04:56:33,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 485 places, 1098 transitions, 51088 flow [2021-03-11 04:56:38,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 479 places, 1098 transitions, 50170 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-03-11 04:56:38,260 INFO L241 Difference]: Finished difference. Result has 480 places, 1091 transitions, 48948 flow [2021-03-11 04:56:38,261 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=48006, PETRI_DIFFERENCE_MINUEND_PLACES=471, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1093, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=532, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=561, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=48948, PETRI_PLACES=480, PETRI_TRANSITIONS=1091} [2021-03-11 04:56:38,261 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 429 predicate places. [2021-03-11 04:56:38,261 INFO L480 AbstractCegarLoop]: Abstraction has has 480 places, 1091 transitions, 48948 flow [2021-03-11 04:56:38,261 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:56:38,261 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:56:38,261 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:56:38,261 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-03-11 04:56:38,261 INFO L428 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:56:38,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:56:38,262 INFO L82 PathProgramCache]: Analyzing trace with hash 751102173, now seen corresponding path program 79 times [2021-03-11 04:56:38,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:56:38,262 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090233289] [2021-03-11 04:56:38,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:56:38,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:56:38,271 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:56:38,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:56:38,271 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:56:38,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:56:38,275 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 04:56:38,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 04:56:38,280 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 04:56:38,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 04:56:38,288 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 04:56:38,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 04:56:38,300 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 04:56:38,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 04:56:38,326 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 04:56:38,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 04:56:38,348 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:56:38,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:56:38,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:56:38,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090233289] [2021-03-11 04:56:38,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:56:38,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:56:38,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711316913] [2021-03-11 04:56:38,368 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:56:38,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:56:38,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:56:38,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:56:38,368 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:56:38,368 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 480 places, 1091 transitions, 48948 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:56:38,368 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:56:38,368 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:56:38,369 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:56:44,789 INFO L129 PetriNetUnfolder]: 463/14042 cut-off events. [2021-03-11 04:56:44,789 INFO L130 PetriNetUnfolder]: For 523254/527302 co-relation queries the response was YES. [2021-03-11 04:56:44,882 INFO L84 FinitePrefix]: Finished finitePrefix Result has 90741 conditions, 14042 events. 463/14042 cut-off events. For 523254/527302 co-relation queries the response was YES. Maximal size of possible extension queue 2354. Compared 265644 event pairs, 463 based on Foata normal form. 43/13529 useless extension candidates. Maximal degree in co-relation 90578. Up to 1873 conditions per place. [2021-03-11 04:56:44,909 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 608 selfloop transitions, 465 changer transitions 2/1096 dead transitions. [2021-03-11 04:56:44,909 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 487 places, 1096 transitions, 51118 flow [2021-03-11 04:56:44,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 04:56:44,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 04:56:44,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 04:56:44,911 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 04:56:44,911 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 04:56:44,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 04:56:44,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:56:44,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 04:56:44,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:56:44,912 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:56:44,912 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:56:44,912 INFO L185 Difference]: Start difference. First operand has 480 places, 1091 transitions, 48948 flow. Second operand 9 states and 674 transitions. [2021-03-11 04:56:44,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 487 places, 1096 transitions, 51118 flow [2021-03-11 04:56:49,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 482 places, 1096 transitions, 50155 flow, removed 26 selfloop flow, removed 5 redundant places. [2021-03-11 04:56:49,299 INFO L241 Difference]: Finished difference. Result has 483 places, 1089 transitions, 48810 flow [2021-03-11 04:56:49,300 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=47995, PETRI_DIFFERENCE_MINUEND_PLACES=474, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1091, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=465, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=626, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=48810, PETRI_PLACES=483, PETRI_TRANSITIONS=1089} [2021-03-11 04:56:49,300 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 432 predicate places. [2021-03-11 04:56:49,300 INFO L480 AbstractCegarLoop]: Abstraction has has 483 places, 1089 transitions, 48810 flow [2021-03-11 04:56:49,300 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:56:49,300 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:56:49,300 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:56:49,300 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-03-11 04:56:49,301 INFO L428 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:56:49,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:56:49,301 INFO L82 PathProgramCache]: Analyzing trace with hash 309851821, now seen corresponding path program 80 times [2021-03-11 04:56:49,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:56:49,301 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504504318] [2021-03-11 04:56:49,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:56:49,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:56:49,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:56:49,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:56:49,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:56:49,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:56:49,315 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 04:56:49,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 04:56:49,320 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 04:56:49,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 04:56:49,331 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 04:56:49,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 04:56:49,343 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 04:56:49,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 04:56:49,358 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 04:56:49,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 04:56:49,378 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:56:49,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:56:49,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:56:49,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504504318] [2021-03-11 04:56:49,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:56:49,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:56:49,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095425478] [2021-03-11 04:56:49,400 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:56:49,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:56:49,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:56:49,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:56:49,401 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:56:49,401 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 483 places, 1089 transitions, 48810 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:56:49,401 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:56:49,401 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:56:49,401 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:56:55,853 INFO L129 PetriNetUnfolder]: 463/14032 cut-off events. [2021-03-11 04:56:55,853 INFO L130 PetriNetUnfolder]: For 521695/525748 co-relation queries the response was YES. [2021-03-11 04:56:55,947 INFO L84 FinitePrefix]: Finished finitePrefix Result has 90776 conditions, 14032 events. 463/14032 cut-off events. For 521695/525748 co-relation queries the response was YES. Maximal size of possible extension queue 2369. Compared 265374 event pairs, 463 based on Foata normal form. 45/13521 useless extension candidates. Maximal degree in co-relation 90613. Up to 1873 conditions per place. [2021-03-11 04:56:55,974 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 609 selfloop transitions, 463 changer transitions 1/1094 dead transitions. [2021-03-11 04:56:55,975 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 490 places, 1094 transitions, 50976 flow [2021-03-11 04:56:55,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 04:56:55,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 04:56:55,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 04:56:55,977 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 04:56:55,977 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 04:56:55,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 04:56:55,977 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:56:55,977 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 04:56:55,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:56:55,978 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:56:55,978 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:56:55,978 INFO L185 Difference]: Start difference. First operand has 483 places, 1089 transitions, 48810 flow. Second operand 9 states and 674 transitions. [2021-03-11 04:56:55,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 490 places, 1094 transitions, 50976 flow [2021-03-11 04:57:00,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 486 places, 1094 transitions, 50275 flow, removed 9 selfloop flow, removed 4 redundant places. [2021-03-11 04:57:00,310 INFO L241 Difference]: Finished difference. Result has 487 places, 1088 transitions, 48990 flow [2021-03-11 04:57:00,311 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=48119, PETRI_DIFFERENCE_MINUEND_PLACES=478, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1089, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=463, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=626, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=48990, PETRI_PLACES=487, PETRI_TRANSITIONS=1088} [2021-03-11 04:57:00,311 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 436 predicate places. [2021-03-11 04:57:00,311 INFO L480 AbstractCegarLoop]: Abstraction has has 487 places, 1088 transitions, 48990 flow [2021-03-11 04:57:00,311 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:57:00,311 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:57:00,311 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:57:00,311 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-03-11 04:57:00,311 INFO L428 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:57:00,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:57:00,311 INFO L82 PathProgramCache]: Analyzing trace with hash -1204657827, now seen corresponding path program 81 times [2021-03-11 04:57:00,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:57:00,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222081399] [2021-03-11 04:57:00,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:57:00,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:57:00,320 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:57:00,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:57:00,321 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:57:00,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:57:00,324 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 04:57:00,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 04:57:00,330 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 04:57:00,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 04:57:00,338 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 04:57:00,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 04:57:00,350 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 04:57:00,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 04:57:00,366 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 04:57:00,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 04:57:00,394 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:57:00,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:57:00,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:57:00,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222081399] [2021-03-11 04:57:00,416 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:57:00,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:57:00,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457774848] [2021-03-11 04:57:00,416 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:57:00,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:57:00,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:57:00,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:57:00,417 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:57:00,417 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 487 places, 1088 transitions, 48990 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:57:00,417 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:57:00,417 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:57:00,417 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:57:06,816 INFO L129 PetriNetUnfolder]: 463/14024 cut-off events. [2021-03-11 04:57:06,816 INFO L130 PetriNetUnfolder]: For 523134/527187 co-relation queries the response was YES. [2021-03-11 04:57:06,928 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91318 conditions, 14024 events. 463/14024 cut-off events. For 523134/527187 co-relation queries the response was YES. Maximal size of possible extension queue 2368. Compared 265214 event pairs, 463 based on Foata normal form. 45/13513 useless extension candidates. Maximal degree in co-relation 91155. Up to 1873 conditions per place. [2021-03-11 04:57:06,957 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 521 selfloop transitions, 549 changer transitions 2/1093 dead transitions. [2021-03-11 04:57:06,957 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 494 places, 1093 transitions, 51154 flow [2021-03-11 04:57:06,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 04:57:06,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 04:57:06,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 04:57:06,959 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 04:57:06,959 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 04:57:06,959 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 04:57:06,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:57:06,960 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 04:57:06,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:57:06,960 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:57:06,960 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:57:06,961 INFO L185 Difference]: Start difference. First operand has 487 places, 1088 transitions, 48990 flow. Second operand 9 states and 674 transitions. [2021-03-11 04:57:06,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 494 places, 1093 transitions, 51154 flow [2021-03-11 04:57:11,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 488 places, 1093 transitions, 50234 flow, removed 9 selfloop flow, removed 6 redundant places. [2021-03-11 04:57:11,297 INFO L241 Difference]: Finished difference. Result has 489 places, 1086 transitions, 49054 flow [2021-03-11 04:57:11,298 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=48080, PETRI_DIFFERENCE_MINUEND_PLACES=480, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1088, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=549, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=539, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=49054, PETRI_PLACES=489, PETRI_TRANSITIONS=1086} [2021-03-11 04:57:11,298 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 438 predicate places. [2021-03-11 04:57:11,298 INFO L480 AbstractCegarLoop]: Abstraction has has 489 places, 1086 transitions, 49054 flow [2021-03-11 04:57:11,298 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:57:11,298 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:57:11,298 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:57:11,298 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-03-11 04:57:11,298 INFO L428 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:57:11,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:57:11,298 INFO L82 PathProgramCache]: Analyzing trace with hash -908775367, now seen corresponding path program 82 times [2021-03-11 04:57:11,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:57:11,298 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386469849] [2021-03-11 04:57:11,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:57:11,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:57:11,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:57:11,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:57:11,312 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:57:11,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:57:11,315 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 04:57:11,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 04:57:11,320 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 04:57:11,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 04:57:11,327 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 04:57:11,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 04:57:11,342 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 04:57:11,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 04:57:11,373 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 04:57:11,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 04:57:11,395 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:57:11,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:57:11,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:57:11,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386469849] [2021-03-11 04:57:11,416 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:57:11,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:57:11,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834665098] [2021-03-11 04:57:11,416 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:57:11,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:57:11,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:57:11,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:57:11,417 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:57:11,417 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 489 places, 1086 transitions, 49054 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:57:11,417 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:57:11,417 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:57:11,417 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:57:17,822 INFO L129 PetriNetUnfolder]: 463/14013 cut-off events. [2021-03-11 04:57:17,823 INFO L130 PetriNetUnfolder]: For 522087/526140 co-relation queries the response was YES. [2021-03-11 04:57:17,917 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91250 conditions, 14013 events. 463/14013 cut-off events. For 522087/526140 co-relation queries the response was YES. Maximal size of possible extension queue 2366. Compared 264896 event pairs, 463 based on Foata normal form. 45/13503 useless extension candidates. Maximal degree in co-relation 91087. Up to 1873 conditions per place. [2021-03-11 04:57:17,942 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 537 selfloop transitions, 532 changer transitions 1/1091 dead transitions. [2021-03-11 04:57:17,943 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 496 places, 1091 transitions, 51214 flow [2021-03-11 04:57:17,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 04:57:17,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 04:57:17,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 04:57:17,944 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 04:57:17,944 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 04:57:17,944 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 04:57:17,944 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:57:17,944 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 04:57:17,944 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:57:17,945 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:57:17,945 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:57:17,945 INFO L185 Difference]: Start difference. First operand has 489 places, 1086 transitions, 49054 flow. Second operand 9 states and 674 transitions. [2021-03-11 04:57:17,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 496 places, 1091 transitions, 51214 flow [2021-03-11 04:57:22,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 490 places, 1091 transitions, 50145 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-03-11 04:57:22,042 INFO L241 Difference]: Finished difference. Result has 491 places, 1085 transitions, 48989 flow [2021-03-11 04:57:22,043 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=47995, PETRI_DIFFERENCE_MINUEND_PLACES=482, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1086, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=532, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=554, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=48989, PETRI_PLACES=491, PETRI_TRANSITIONS=1085} [2021-03-11 04:57:22,043 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 440 predicate places. [2021-03-11 04:57:22,043 INFO L480 AbstractCegarLoop]: Abstraction has has 491 places, 1085 transitions, 48989 flow [2021-03-11 04:57:22,043 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:57:22,043 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:57:22,043 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:57:22,043 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-03-11 04:57:22,043 INFO L428 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:57:22,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:57:22,044 INFO L82 PathProgramCache]: Analyzing trace with hash 1254926683, now seen corresponding path program 83 times [2021-03-11 04:57:22,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:57:22,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181956823] [2021-03-11 04:57:22,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:57:22,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:57:22,053 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:57:22,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:57:22,053 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:57:22,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:57:22,057 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 04:57:22,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 04:57:22,062 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 04:57:22,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 04:57:22,069 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 04:57:22,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 04:57:22,087 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 04:57:22,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 04:57:22,114 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 04:57:22,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 04:57:22,174 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:57:22,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:57:22,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:57:22,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181956823] [2021-03-11 04:57:22,194 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:57:22,194 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:57:22,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954046716] [2021-03-11 04:57:22,195 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:57:22,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:57:22,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:57:22,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:57:22,195 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:57:22,196 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 491 places, 1085 transitions, 48989 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:57:22,196 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:57:22,196 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:57:22,196 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:57:28,485 INFO L129 PetriNetUnfolder]: 463/14006 cut-off events. [2021-03-11 04:57:28,485 INFO L130 PetriNetUnfolder]: For 521766/525819 co-relation queries the response was YES. [2021-03-11 04:57:28,579 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91233 conditions, 14006 events. 463/14006 cut-off events. For 521766/525819 co-relation queries the response was YES. Maximal size of possible extension queue 2365. Compared 264809 event pairs, 463 based on Foata normal form. 45/13497 useless extension candidates. Maximal degree in co-relation 91070. Up to 1873 conditions per place. [2021-03-11 04:57:28,606 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 595 selfloop transitions, 482 changer transitions 1/1099 dead transitions. [2021-03-11 04:57:28,606 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 498 places, 1099 transitions, 51570 flow [2021-03-11 04:57:28,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 04:57:28,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 04:57:28,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 04:57:28,607 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 04:57:28,607 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 04:57:28,607 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 04:57:28,607 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:57:28,608 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 04:57:28,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:57:28,608 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:57:28,608 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:57:28,608 INFO L185 Difference]: Start difference. First operand has 491 places, 1085 transitions, 48989 flow. Second operand 9 states and 674 transitions. [2021-03-11 04:57:28,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 498 places, 1099 transitions, 51570 flow [2021-03-11 04:57:32,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 493 places, 1099 transitions, 50628 flow, removed 12 selfloop flow, removed 5 redundant places. [2021-03-11 04:57:32,925 INFO L241 Difference]: Finished difference. Result has 494 places, 1084 transitions, 48971 flow [2021-03-11 04:57:32,926 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=48066, PETRI_DIFFERENCE_MINUEND_PLACES=485, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1085, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=482, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=603, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=48971, PETRI_PLACES=494, PETRI_TRANSITIONS=1084} [2021-03-11 04:57:32,926 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 443 predicate places. [2021-03-11 04:57:32,926 INFO L480 AbstractCegarLoop]: Abstraction has has 494 places, 1084 transitions, 48971 flow [2021-03-11 04:57:32,926 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:57:32,926 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:57:32,926 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:57:32,926 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-03-11 04:57:32,926 INFO L428 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:57:32,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:57:32,927 INFO L82 PathProgramCache]: Analyzing trace with hash 1438053085, now seen corresponding path program 84 times [2021-03-11 04:57:32,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:57:32,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732265170] [2021-03-11 04:57:32,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:57:32,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:57:32,936 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:57:32,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:57:32,937 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:57:32,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:57:32,940 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 04:57:32,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 04:57:32,945 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 04:57:32,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 04:57:32,953 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 04:57:32,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 04:57:32,964 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 04:57:32,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 04:57:32,991 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 04:57:32,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 04:57:33,012 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:57:33,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:57:33,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:57:33,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732265170] [2021-03-11 04:57:33,031 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:57:33,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:57:33,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133594460] [2021-03-11 04:57:33,031 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:57:33,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:57:33,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:57:33,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:57:33,032 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:57:33,032 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 494 places, 1084 transitions, 48971 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:57:33,032 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:57:33,032 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:57:33,032 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:57:39,354 INFO L129 PetriNetUnfolder]: 463/13998 cut-off events. [2021-03-11 04:57:39,354 INFO L130 PetriNetUnfolder]: For 521431/525479 co-relation queries the response was YES. [2021-03-11 04:57:39,487 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91336 conditions, 13998 events. 463/13998 cut-off events. For 521431/525479 co-relation queries the response was YES. Maximal size of possible extension queue 2347. Compared 264517 event pairs, 463 based on Foata normal form. 43/13487 useless extension candidates. Maximal degree in co-relation 91173. Up to 1873 conditions per place. [2021-03-11 04:57:39,520 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 534 selfloop transitions, 531 changer transitions 3/1089 dead transitions. [2021-03-11 04:57:39,520 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 501 places, 1089 transitions, 51127 flow [2021-03-11 04:57:39,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 04:57:39,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 04:57:39,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 04:57:39,521 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 04:57:39,521 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 04:57:39,521 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 04:57:39,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:57:39,521 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 04:57:39,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:57:39,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:57:39,522 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:57:39,522 INFO L185 Difference]: Start difference. First operand has 494 places, 1084 transitions, 48971 flow. Second operand 9 states and 674 transitions. [2021-03-11 04:57:39,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 501 places, 1089 transitions, 51127 flow [2021-03-11 04:57:43,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 495 places, 1089 transitions, 50177 flow, removed 7 selfloop flow, removed 6 redundant places. [2021-03-11 04:57:43,962 INFO L241 Difference]: Finished difference. Result has 496 places, 1081 transitions, 48909 flow [2021-03-11 04:57:43,962 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=48031, PETRI_DIFFERENCE_MINUEND_PLACES=487, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1084, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=531, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=553, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=48909, PETRI_PLACES=496, PETRI_TRANSITIONS=1081} [2021-03-11 04:57:43,962 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 445 predicate places. [2021-03-11 04:57:43,962 INFO L480 AbstractCegarLoop]: Abstraction has has 496 places, 1081 transitions, 48909 flow [2021-03-11 04:57:43,963 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:57:43,963 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:57:43,963 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:57:43,963 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-03-11 04:57:43,963 INFO L428 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:57:43,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:57:43,963 INFO L82 PathProgramCache]: Analyzing trace with hash -282705305, now seen corresponding path program 85 times [2021-03-11 04:57:43,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:57:43,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641908352] [2021-03-11 04:57:43,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:57:43,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:57:43,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:57:43,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:57:43,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:57:43,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:57:43,976 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 04:57:43,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 04:57:43,981 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 04:57:43,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 04:57:44,003 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 04:57:44,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 04:57:44,023 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 04:57:44,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 04:57:44,048 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 04:57:44,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 04:57:44,069 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:57:44,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:57:44,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:57:44,088 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641908352] [2021-03-11 04:57:44,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:57:44,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:57:44,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352080668] [2021-03-11 04:57:44,088 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:57:44,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:57:44,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:57:44,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:57:44,089 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:57:44,089 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 496 places, 1081 transitions, 48909 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:57:44,089 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:57:44,089 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:57:44,089 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:57:50,292 INFO L129 PetriNetUnfolder]: 463/13985 cut-off events. [2021-03-11 04:57:50,292 INFO L130 PetriNetUnfolder]: For 520231/524279 co-relation queries the response was YES. [2021-03-11 04:57:50,534 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91240 conditions, 13985 events. 463/13985 cut-off events. For 520231/524279 co-relation queries the response was YES. Maximal size of possible extension queue 2345. Compared 264420 event pairs, 463 based on Foata normal form. 43/13475 useless extension candidates. Maximal degree in co-relation 91077. Up to 1873 conditions per place. [2021-03-11 04:57:50,560 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 584 selfloop transitions, 488 changer transitions 2/1095 dead transitions. [2021-03-11 04:57:50,560 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 503 places, 1095 transitions, 51491 flow [2021-03-11 04:57:50,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 04:57:50,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 04:57:50,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 04:57:50,561 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 04:57:50,561 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 04:57:50,561 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 04:57:50,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:57:50,561 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 04:57:50,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:57:50,562 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:57:50,562 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:57:50,562 INFO L185 Difference]: Start difference. First operand has 496 places, 1081 transitions, 48909 flow. Second operand 9 states and 674 transitions. [2021-03-11 04:57:50,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 503 places, 1095 transitions, 51491 flow [2021-03-11 04:57:54,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 498 places, 1095 transitions, 50656 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-03-11 04:57:54,729 INFO L241 Difference]: Finished difference. Result has 500 places, 1088 transitions, 49458 flow [2021-03-11 04:57:54,730 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=48093, PETRI_DIFFERENCE_MINUEND_PLACES=490, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1081, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=479, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=593, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=49458, PETRI_PLACES=500, PETRI_TRANSITIONS=1088} [2021-03-11 04:57:54,730 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 449 predicate places. [2021-03-11 04:57:54,730 INFO L480 AbstractCegarLoop]: Abstraction has has 500 places, 1088 transitions, 49458 flow [2021-03-11 04:57:54,730 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:57:54,730 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:57:54,730 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:57:54,731 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-03-11 04:57:54,731 INFO L428 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:57:54,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:57:54,731 INFO L82 PathProgramCache]: Analyzing trace with hash -481012809, now seen corresponding path program 86 times [2021-03-11 04:57:54,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:57:54,731 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049493902] [2021-03-11 04:57:54,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:57:54,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:57:54,738 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:57:54,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:57:54,739 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:57:54,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:57:54,743 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 04:57:54,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 04:57:54,749 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 04:57:54,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 04:57:54,757 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 04:57:54,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 04:57:54,769 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 04:57:54,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 04:57:54,784 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 04:57:54,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 04:57:54,804 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:57:54,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:57:54,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:57:54,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049493902] [2021-03-11 04:57:54,823 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:57:54,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:57:54,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049739713] [2021-03-11 04:57:54,823 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:57:54,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:57:54,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:57:54,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:57:54,824 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:57:54,824 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 500 places, 1088 transitions, 49458 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:57:54,824 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:57:54,824 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:57:54,824 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:58:01,166 INFO L129 PetriNetUnfolder]: 463/13976 cut-off events. [2021-03-11 04:58:01,167 INFO L130 PetriNetUnfolder]: For 523946/527999 co-relation queries the response was YES. [2021-03-11 04:58:01,263 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91637 conditions, 13976 events. 463/13976 cut-off events. For 523946/527999 co-relation queries the response was YES. Maximal size of possible extension queue 2361. Compared 264119 event pairs, 463 based on Foata normal form. 45/13469 useless extension candidates. Maximal degree in co-relation 91473. Up to 1873 conditions per place. [2021-03-11 04:58:01,292 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 535 selfloop transitions, 534 changer transitions 3/1093 dead transitions. [2021-03-11 04:58:01,292 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 507 places, 1093 transitions, 51622 flow [2021-03-11 04:58:01,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 04:58:01,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 04:58:01,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 04:58:01,293 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 04:58:01,293 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 04:58:01,293 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 04:58:01,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:58:01,294 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 04:58:01,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:58:01,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:58:01,294 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:58:01,294 INFO L185 Difference]: Start difference. First operand has 500 places, 1088 transitions, 49458 flow. Second operand 9 states and 674 transitions. [2021-03-11 04:58:01,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 507 places, 1093 transitions, 51622 flow [2021-03-11 04:58:05,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 503 places, 1093 transitions, 50897 flow, removed 21 selfloop flow, removed 4 redundant places. [2021-03-11 04:58:05,609 INFO L241 Difference]: Finished difference. Result has 504 places, 1085 transitions, 49627 flow [2021-03-11 04:58:05,610 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=48743, PETRI_DIFFERENCE_MINUEND_PLACES=495, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1088, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=534, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=554, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=49627, PETRI_PLACES=504, PETRI_TRANSITIONS=1085} [2021-03-11 04:58:05,610 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 453 predicate places. [2021-03-11 04:58:05,610 INFO L480 AbstractCegarLoop]: Abstraction has has 504 places, 1085 transitions, 49627 flow [2021-03-11 04:58:05,610 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:58:05,610 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:58:05,610 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:58:05,610 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-03-11 04:58:05,610 INFO L428 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:58:05,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:58:05,610 INFO L82 PathProgramCache]: Analyzing trace with hash 600328361, now seen corresponding path program 87 times [2021-03-11 04:58:05,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:58:05,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659291486] [2021-03-11 04:58:05,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:58:05,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:58:05,619 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:58:05,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:58:05,620 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:58:05,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:58:05,625 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 04:58:05,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 04:58:05,631 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 04:58:05,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 04:58:05,639 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 04:58:05,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 04:58:05,659 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 04:58:05,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 04:58:05,685 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 04:58:05,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 04:58:05,705 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:58:05,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:58:05,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:58:05,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659291486] [2021-03-11 04:58:05,724 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:58:05,724 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:58:05,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741241868] [2021-03-11 04:58:05,724 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:58:05,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:58:05,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:58:05,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:58:05,725 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:58:05,725 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 504 places, 1085 transitions, 49627 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:58:05,725 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:58:05,725 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:58:05,725 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:58:12,121 INFO L129 PetriNetUnfolder]: 463/13962 cut-off events. [2021-03-11 04:58:12,121 INFO L130 PetriNetUnfolder]: For 524044/528097 co-relation queries the response was YES. [2021-03-11 04:58:12,217 INFO L84 FinitePrefix]: Finished finitePrefix Result has 92075 conditions, 13962 events. 463/13962 cut-off events. For 524044/528097 co-relation queries the response was YES. Maximal size of possible extension queue 2358. Compared 263796 event pairs, 463 based on Foata normal form. 45/13456 useless extension candidates. Maximal degree in co-relation 91911. Up to 1873 conditions per place. [2021-03-11 04:58:12,248 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 583 selfloop transitions, 484 changer transitions 2/1090 dead transitions. [2021-03-11 04:58:12,248 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 511 places, 1090 transitions, 51785 flow [2021-03-11 04:58:12,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 04:58:12,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 04:58:12,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 04:58:12,249 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 04:58:12,249 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 04:58:12,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 04:58:12,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:58:12,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 04:58:12,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:58:12,250 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:58:12,250 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:58:12,250 INFO L185 Difference]: Start difference. First operand has 504 places, 1085 transitions, 49627 flow. Second operand 9 states and 674 transitions. [2021-03-11 04:58:12,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 511 places, 1090 transitions, 51785 flow [2021-03-11 04:58:16,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 505 places, 1090 transitions, 50724 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-03-11 04:58:16,654 INFO L241 Difference]: Finished difference. Result has 506 places, 1083 transitions, 49423 flow [2021-03-11 04:58:16,654 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=48576, PETRI_DIFFERENCE_MINUEND_PLACES=497, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1085, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=484, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=601, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=49423, PETRI_PLACES=506, PETRI_TRANSITIONS=1083} [2021-03-11 04:58:16,654 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 455 predicate places. [2021-03-11 04:58:16,654 INFO L480 AbstractCegarLoop]: Abstraction has has 506 places, 1083 transitions, 49423 flow [2021-03-11 04:58:16,655 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:58:16,655 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:58:16,655 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:58:16,655 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-03-11 04:58:16,655 INFO L428 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:58:16,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:58:16,655 INFO L82 PathProgramCache]: Analyzing trace with hash 1708467195, now seen corresponding path program 88 times [2021-03-11 04:58:16,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:58:16,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058643878] [2021-03-11 04:58:16,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:58:16,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:58:16,664 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:58:16,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:58:16,665 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:58:16,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:58:16,668 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 04:58:16,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 04:58:16,674 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 04:58:16,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 04:58:16,682 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 04:58:16,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 04:58:16,703 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 04:58:16,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 04:58:16,719 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 04:58:16,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 04:58:16,739 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:58:16,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:58:16,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:58:16,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058643878] [2021-03-11 04:58:16,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:58:16,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:58:16,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703714758] [2021-03-11 04:58:16,758 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:58:16,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:58:16,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:58:16,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:58:16,760 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:58:16,760 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 506 places, 1083 transitions, 49423 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:58:16,760 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:58:16,760 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:58:16,760 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:58:23,136 INFO L129 PetriNetUnfolder]: 463/13950 cut-off events. [2021-03-11 04:58:23,136 INFO L130 PetriNetUnfolder]: For 523316/527369 co-relation queries the response was YES. [2021-03-11 04:58:23,234 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91976 conditions, 13950 events. 463/13950 cut-off events. For 523316/527369 co-relation queries the response was YES. Maximal size of possible extension queue 2355. Compared 263514 event pairs, 463 based on Foata normal form. 45/13445 useless extension candidates. Maximal degree in co-relation 91812. Up to 1873 conditions per place. [2021-03-11 04:58:23,260 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 557 selfloop transitions, 508 changer transitions 2/1088 dead transitions. [2021-03-11 04:58:23,260 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 513 places, 1088 transitions, 51577 flow [2021-03-11 04:58:23,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 04:58:23,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 04:58:23,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 04:58:23,261 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 04:58:23,261 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 04:58:23,261 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 04:58:23,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:58:23,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 04:58:23,262 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:58:23,262 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:58:23,262 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:58:23,262 INFO L185 Difference]: Start difference. First operand has 506 places, 1083 transitions, 49423 flow. Second operand 9 states and 674 transitions. [2021-03-11 04:58:23,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 513 places, 1088 transitions, 51577 flow [2021-03-11 04:58:27,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 507 places, 1088 transitions, 50625 flow, removed 7 selfloop flow, removed 6 redundant places. [2021-03-11 04:58:27,580 INFO L241 Difference]: Finished difference. Result has 508 places, 1081 transitions, 49368 flow [2021-03-11 04:58:27,581 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=48481, PETRI_DIFFERENCE_MINUEND_PLACES=499, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1083, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=508, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=575, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=49368, PETRI_PLACES=508, PETRI_TRANSITIONS=1081} [2021-03-11 04:58:27,581 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 457 predicate places. [2021-03-11 04:58:27,581 INFO L480 AbstractCegarLoop]: Abstraction has has 508 places, 1081 transitions, 49368 flow [2021-03-11 04:58:27,581 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:58:27,581 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:58:27,581 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:58:27,581 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-03-11 04:58:27,581 INFO L428 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:58:27,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:58:27,581 INFO L82 PathProgramCache]: Analyzing trace with hash -328435381, now seen corresponding path program 89 times [2021-03-11 04:58:27,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:58:27,582 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501586794] [2021-03-11 04:58:27,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:58:27,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:58:27,591 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:58:27,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:58:27,591 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:58:27,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:58:27,595 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 04:58:27,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 04:58:27,600 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 04:58:27,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 04:58:27,614 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 04:58:27,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 04:58:27,634 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 04:58:27,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 04:58:27,658 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 04:58:27,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 04:58:27,678 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:58:27,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:58:27,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:58:27,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501586794] [2021-03-11 04:58:27,698 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:58:27,698 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:58:27,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286529514] [2021-03-11 04:58:27,699 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:58:27,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:58:27,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:58:27,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:58:27,699 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:58:27,699 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 508 places, 1081 transitions, 49368 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:58:27,699 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:58:27,700 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:58:27,700 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:58:34,122 INFO L129 PetriNetUnfolder]: 463/13938 cut-off events. [2021-03-11 04:58:34,122 INFO L130 PetriNetUnfolder]: For 522331/526384 co-relation queries the response was YES. [2021-03-11 04:58:34,225 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91926 conditions, 13938 events. 463/13938 cut-off events. For 522331/526384 co-relation queries the response was YES. Maximal size of possible extension queue 2352. Compared 263323 event pairs, 463 based on Foata normal form. 45/13434 useless extension candidates. Maximal degree in co-relation 91762. Up to 1873 conditions per place. [2021-03-11 04:58:34,252 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 564 selfloop transitions, 500 changer transitions 1/1086 dead transitions. [2021-03-11 04:58:34,252 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 515 places, 1086 transitions, 51518 flow [2021-03-11 04:58:34,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 04:58:34,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 04:58:34,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 04:58:34,253 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 04:58:34,253 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 04:58:34,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 04:58:34,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:58:34,253 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 04:58:34,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:58:34,254 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:58:34,254 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:58:34,254 INFO L185 Difference]: Start difference. First operand has 508 places, 1081 transitions, 49368 flow. Second operand 9 states and 674 transitions. [2021-03-11 04:58:34,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 515 places, 1086 transitions, 51518 flow [2021-03-11 04:58:38,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 509 places, 1086 transitions, 50515 flow, removed 10 selfloop flow, removed 6 redundant places. [2021-03-11 04:58:38,558 INFO L241 Difference]: Finished difference. Result has 510 places, 1080 transitions, 49305 flow [2021-03-11 04:58:38,558 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=48375, PETRI_DIFFERENCE_MINUEND_PLACES=501, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1081, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=500, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=581, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=49305, PETRI_PLACES=510, PETRI_TRANSITIONS=1080} [2021-03-11 04:58:38,558 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 459 predicate places. [2021-03-11 04:58:38,558 INFO L480 AbstractCegarLoop]: Abstraction has has 510 places, 1080 transitions, 49305 flow [2021-03-11 04:58:38,558 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:58:38,558 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:58:38,559 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:58:38,559 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-03-11 04:58:38,559 INFO L428 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:58:38,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:58:38,559 INFO L82 PathProgramCache]: Analyzing trace with hash 1083436617, now seen corresponding path program 90 times [2021-03-11 04:58:38,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:58:38,559 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683143697] [2021-03-11 04:58:38,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:58:38,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:58:38,569 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:58:38,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:58:38,570 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:58:38,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:58:38,573 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 04:58:38,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 04:58:38,578 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 04:58:38,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 04:58:38,586 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 04:58:38,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 04:58:38,607 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 04:58:38,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 04:58:38,633 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 04:58:38,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 04:58:38,653 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:58:38,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:58:38,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:58:38,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683143697] [2021-03-11 04:58:38,672 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:58:38,672 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:58:38,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561852859] [2021-03-11 04:58:38,672 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:58:38,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:58:38,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:58:38,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:58:38,673 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:58:38,673 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 510 places, 1080 transitions, 49305 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:58:38,673 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:58:38,673 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:58:38,673 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:58:45,105 INFO L129 PetriNetUnfolder]: 463/13930 cut-off events. [2021-03-11 04:58:45,105 INFO L130 PetriNetUnfolder]: For 521838/525886 co-relation queries the response was YES. [2021-03-11 04:58:45,199 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91900 conditions, 13930 events. 463/13930 cut-off events. For 521838/525886 co-relation queries the response was YES. Maximal size of possible extension queue 2334. Compared 262974 event pairs, 463 based on Foata normal form. 43/13424 useless extension candidates. Maximal degree in co-relation 91736. Up to 1873 conditions per place. [2021-03-11 04:58:45,227 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 566 selfloop transitions, 496 changer transitions 2/1085 dead transitions. [2021-03-11 04:58:45,227 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 517 places, 1085 transitions, 51453 flow [2021-03-11 04:58:45,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 04:58:45,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 04:58:45,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 04:58:45,228 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 04:58:45,228 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 04:58:45,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 04:58:45,228 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:58:45,228 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 04:58:45,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:58:45,229 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:58:45,229 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:58:45,229 INFO L185 Difference]: Start difference. First operand has 510 places, 1080 transitions, 49305 flow. Second operand 9 states and 674 transitions. [2021-03-11 04:58:45,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 517 places, 1085 transitions, 51453 flow [2021-03-11 04:58:49,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 511 places, 1085 transitions, 50534 flow, removed 16 selfloop flow, removed 6 redundant places. [2021-03-11 04:58:49,733 INFO L241 Difference]: Finished difference. Result has 512 places, 1078 transitions, 49254 flow [2021-03-11 04:58:49,734 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=48396, PETRI_DIFFERENCE_MINUEND_PLACES=503, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1080, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=496, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=584, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=49254, PETRI_PLACES=512, PETRI_TRANSITIONS=1078} [2021-03-11 04:58:49,734 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 461 predicate places. [2021-03-11 04:58:49,734 INFO L480 AbstractCegarLoop]: Abstraction has has 512 places, 1078 transitions, 49254 flow [2021-03-11 04:58:49,734 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:58:49,734 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:58:49,734 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:58:49,734 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2021-03-11 04:58:49,734 INFO L428 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:58:49,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:58:49,734 INFO L82 PathProgramCache]: Analyzing trace with hash -1275734241, now seen corresponding path program 91 times [2021-03-11 04:58:49,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:58:49,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438554572] [2021-03-11 04:58:49,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:58:49,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:58:49,745 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:58:49,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:58:49,745 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:58:49,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:58:49,748 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 04:58:49,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 04:58:49,754 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 04:58:49,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 04:58:49,766 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 04:58:49,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 04:58:49,787 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 04:58:49,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 04:58:49,814 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 04:58:49,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 04:58:49,833 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:58:49,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:58:49,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:58:49,852 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438554572] [2021-03-11 04:58:49,852 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:58:49,853 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:58:49,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365960780] [2021-03-11 04:58:49,853 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:58:49,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:58:49,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:58:49,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:58:49,853 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:58:49,854 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 512 places, 1078 transitions, 49254 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:58:49,854 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:58:49,854 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:58:49,854 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:58:56,246 INFO L129 PetriNetUnfolder]: 463/13920 cut-off events. [2021-03-11 04:58:56,247 INFO L130 PetriNetUnfolder]: For 520631/524684 co-relation queries the response was YES. [2021-03-11 04:58:56,344 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91981 conditions, 13920 events. 463/13920 cut-off events. For 520631/524684 co-relation queries the response was YES. Maximal size of possible extension queue 2349. Compared 262862 event pairs, 463 based on Foata normal form. 45/13416 useless extension candidates. Maximal degree in co-relation 91818. Up to 1873 conditions per place. [2021-03-11 04:58:56,372 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 565 selfloop transitions, 495 changer transitions 2/1083 dead transitions. [2021-03-11 04:58:56,372 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 1083 transitions, 51398 flow [2021-03-11 04:58:56,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 04:58:56,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 04:58:56,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 04:58:56,373 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 04:58:56,373 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 04:58:56,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 04:58:56,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:58:56,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 04:58:56,374 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:58:56,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:58:56,374 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:58:56,374 INFO L185 Difference]: Start difference. First operand has 512 places, 1078 transitions, 49254 flow. Second operand 9 states and 674 transitions. [2021-03-11 04:58:56,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 1083 transitions, 51398 flow [2021-03-11 04:59:00,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 514 places, 1083 transitions, 50593 flow, removed 16 selfloop flow, removed 5 redundant places. [2021-03-11 04:59:00,808 INFO L241 Difference]: Finished difference. Result has 515 places, 1076 transitions, 49321 flow [2021-03-11 04:59:00,809 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=48459, PETRI_DIFFERENCE_MINUEND_PLACES=506, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1078, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=495, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=583, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=49321, PETRI_PLACES=515, PETRI_TRANSITIONS=1076} [2021-03-11 04:59:00,809 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 464 predicate places. [2021-03-11 04:59:00,809 INFO L480 AbstractCegarLoop]: Abstraction has has 515 places, 1076 transitions, 49321 flow [2021-03-11 04:59:00,809 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:59:00,809 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:59:00,809 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:59:00,809 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2021-03-11 04:59:00,809 INFO L428 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:59:00,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:59:00,809 INFO L82 PathProgramCache]: Analyzing trace with hash 1806126053, now seen corresponding path program 92 times [2021-03-11 04:59:00,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:59:00,810 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089466712] [2021-03-11 04:59:00,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:59:00,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:59:00,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:59:00,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:59:00,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:59:00,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:59:00,823 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 04:59:00,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 04:59:00,829 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 04:59:00,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 04:59:00,837 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 04:59:00,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 04:59:00,858 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 04:59:00,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 04:59:00,891 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 04:59:00,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 04:59:00,912 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:59:00,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:59:00,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:59:00,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089466712] [2021-03-11 04:59:00,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:59:00,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:59:00,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158533406] [2021-03-11 04:59:00,932 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:59:00,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:59:00,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:59:00,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:59:00,933 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:59:00,933 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 515 places, 1076 transitions, 49321 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:59:00,933 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:59:00,933 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:59:00,933 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:59:07,327 INFO L129 PetriNetUnfolder]: 463/13910 cut-off events. [2021-03-11 04:59:07,327 INFO L130 PetriNetUnfolder]: For 517425/521478 co-relation queries the response was YES. [2021-03-11 04:59:07,418 INFO L84 FinitePrefix]: Finished finitePrefix Result has 92439 conditions, 13910 events. 463/13910 cut-off events. For 517425/521478 co-relation queries the response was YES. Maximal size of possible extension queue 2347. Compared 262632 event pairs, 463 based on Foata normal form. 45/13406 useless extension candidates. Maximal degree in co-relation 92277. Up to 1873 conditions per place. [2021-03-11 04:59:07,444 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 560 selfloop transitions, 497 changer transitions 3/1081 dead transitions. [2021-03-11 04:59:07,444 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 522 places, 1081 transitions, 51461 flow [2021-03-11 04:59:07,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 04:59:07,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 04:59:07,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 04:59:07,445 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 04:59:07,445 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 04:59:07,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 04:59:07,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:59:07,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 04:59:07,445 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:59:07,446 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:59:07,446 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:59:07,446 INFO L185 Difference]: Start difference. First operand has 515 places, 1076 transitions, 49321 flow. Second operand 9 states and 674 transitions. [2021-03-11 04:59:07,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 522 places, 1081 transitions, 51461 flow [2021-03-11 04:59:11,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 516 places, 1081 transitions, 50478 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-03-11 04:59:11,843 INFO L241 Difference]: Finished difference. Result has 517 places, 1073 transitions, 49161 flow [2021-03-11 04:59:11,844 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=48348, PETRI_DIFFERENCE_MINUEND_PLACES=508, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1076, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=497, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=579, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=49161, PETRI_PLACES=517, PETRI_TRANSITIONS=1073} [2021-03-11 04:59:11,844 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 466 predicate places. [2021-03-11 04:59:11,844 INFO L480 AbstractCegarLoop]: Abstraction has has 517 places, 1073 transitions, 49161 flow [2021-03-11 04:59:11,844 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:59:11,844 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:59:11,844 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:59:11,844 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2021-03-11 04:59:11,844 INFO L428 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:59:11,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:59:11,844 INFO L82 PathProgramCache]: Analyzing trace with hash 1634790879, now seen corresponding path program 93 times [2021-03-11 04:59:11,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:59:11,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041323692] [2021-03-11 04:59:11,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:59:11,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:59:11,855 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:59:11,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:59:11,855 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:59:11,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:59:11,859 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 04:59:11,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 04:59:11,869 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 04:59:11,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 04:59:11,878 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 04:59:11,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 04:59:11,889 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 04:59:11,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 04:59:11,905 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 04:59:11,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 04:59:11,926 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:59:11,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:59:11,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:59:11,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041323692] [2021-03-11 04:59:11,945 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:59:11,945 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:59:11,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280562839] [2021-03-11 04:59:11,945 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:59:11,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:59:11,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:59:11,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:59:11,946 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:59:11,946 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 517 places, 1073 transitions, 49161 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:59:11,946 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:59:11,946 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:59:11,946 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:59:18,432 INFO L129 PetriNetUnfolder]: 463/13896 cut-off events. [2021-03-11 04:59:18,432 INFO L130 PetriNetUnfolder]: For 516226/520279 co-relation queries the response was YES. [2021-03-11 04:59:18,527 INFO L84 FinitePrefix]: Finished finitePrefix Result has 92322 conditions, 13896 events. 463/13896 cut-off events. For 516226/520279 co-relation queries the response was YES. Maximal size of possible extension queue 2344. Compared 262353 event pairs, 463 based on Foata normal form. 45/13392 useless extension candidates. Maximal degree in co-relation 92160. Up to 2009 conditions per place. [2021-03-11 04:59:18,554 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 635 selfloop transitions, 491 changer transitions 2/1149 dead transitions. [2021-03-11 04:59:18,554 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 524 places, 1149 transitions, 54637 flow [2021-03-11 04:59:18,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 04:59:18,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 04:59:18,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 04:59:18,555 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 04:59:18,555 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 04:59:18,555 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 04:59:18,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:59:18,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 04:59:18,555 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:59:18,556 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:59:18,556 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:59:18,556 INFO L185 Difference]: Start difference. First operand has 517 places, 1073 transitions, 49161 flow. Second operand 9 states and 674 transitions. [2021-03-11 04:59:18,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 524 places, 1149 transitions, 54637 flow [2021-03-11 04:59:22,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 518 places, 1149 transitions, 53652 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-03-11 04:59:22,838 INFO L241 Difference]: Finished difference. Result has 520 places, 1091 transitions, 50201 flow [2021-03-11 04:59:22,839 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=48186, PETRI_DIFFERENCE_MINUEND_PLACES=510, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1073, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=471, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=582, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=50201, PETRI_PLACES=520, PETRI_TRANSITIONS=1091} [2021-03-11 04:59:22,839 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 469 predicate places. [2021-03-11 04:59:22,839 INFO L480 AbstractCegarLoop]: Abstraction has has 520 places, 1091 transitions, 50201 flow [2021-03-11 04:59:22,839 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:59:22,839 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:59:22,839 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:59:22,839 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2021-03-11 04:59:22,840 INFO L428 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:59:22,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:59:22,840 INFO L82 PathProgramCache]: Analyzing trace with hash 1634346943, now seen corresponding path program 94 times [2021-03-11 04:59:22,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:59:22,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438309312] [2021-03-11 04:59:22,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:59:22,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:59:22,848 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:59:22,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:59:22,849 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:59:22,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:59:22,852 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 04:59:22,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 04:59:22,858 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 04:59:22,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 04:59:22,866 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 04:59:22,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 04:59:22,878 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 04:59:22,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 04:59:22,894 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 04:59:22,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 04:59:22,914 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:59:22,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:59:22,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:59:22,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438309312] [2021-03-11 04:59:22,933 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:59:22,933 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:59:22,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738148732] [2021-03-11 04:59:22,933 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:59:22,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:59:22,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:59:22,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:59:22,934 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:59:22,934 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 520 places, 1091 transitions, 50201 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:59:22,934 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:59:22,934 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:59:22,935 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:59:29,398 INFO L129 PetriNetUnfolder]: 463/13888 cut-off events. [2021-03-11 04:59:29,398 INFO L130 PetriNetUnfolder]: For 517220/521110 co-relation queries the response was YES. [2021-03-11 04:59:29,494 INFO L84 FinitePrefix]: Finished finitePrefix Result has 92247 conditions, 13888 events. 463/13888 cut-off events. For 517220/521110 co-relation queries the response was YES. Maximal size of possible extension queue 2343. Compared 262146 event pairs, 463 based on Foata normal form. 45/13385 useless extension candidates. Maximal degree in co-relation 92084. Up to 2009 conditions per place. [2021-03-11 04:59:29,521 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 636 selfloop transitions, 488 changer transitions 2/1147 dead transitions. [2021-03-11 04:59:29,521 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 527 places, 1147 transitions, 54660 flow [2021-03-11 04:59:29,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 04:59:29,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 04:59:29,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 04:59:29,522 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 04:59:29,522 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 04:59:29,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 04:59:29,522 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:59:29,522 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 04:59:29,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:59:29,523 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:59:29,523 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:59:29,523 INFO L185 Difference]: Start difference. First operand has 520 places, 1091 transitions, 50201 flow. Second operand 9 states and 674 transitions. [2021-03-11 04:59:29,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 527 places, 1147 transitions, 54660 flow [2021-03-11 04:59:33,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 521 places, 1147 transitions, 53707 flow, removed 43 selfloop flow, removed 6 redundant places. [2021-03-11 04:59:33,727 INFO L241 Difference]: Finished difference. Result has 522 places, 1089 transitions, 50115 flow [2021-03-11 04:59:33,728 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=49258, PETRI_DIFFERENCE_MINUEND_PLACES=513, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1091, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=488, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=603, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=50115, PETRI_PLACES=522, PETRI_TRANSITIONS=1089} [2021-03-11 04:59:33,728 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 471 predicate places. [2021-03-11 04:59:33,728 INFO L480 AbstractCegarLoop]: Abstraction has has 522 places, 1089 transitions, 50115 flow [2021-03-11 04:59:33,728 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:59:33,728 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:59:33,728 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:59:33,728 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2021-03-11 04:59:33,728 INFO L428 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:59:33,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:59:33,729 INFO L82 PathProgramCache]: Analyzing trace with hash -905992419, now seen corresponding path program 95 times [2021-03-11 04:59:33,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:59:33,729 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612349033] [2021-03-11 04:59:33,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:59:33,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:59:33,738 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:59:33,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:59:33,738 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:59:33,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:59:33,742 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 04:59:33,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 04:59:33,747 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 04:59:33,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 04:59:33,756 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 04:59:33,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 04:59:33,775 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 04:59:33,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 04:59:33,801 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 04:59:33,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 04:59:33,821 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:59:33,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:59:33,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:59:33,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612349033] [2021-03-11 04:59:33,840 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:59:33,840 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:59:33,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770744762] [2021-03-11 04:59:33,840 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:59:33,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:59:33,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:59:33,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:59:33,841 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:59:33,841 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 522 places, 1089 transitions, 50115 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:59:33,841 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:59:33,841 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:59:33,841 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:59:40,271 INFO L129 PetriNetUnfolder]: 463/13876 cut-off events. [2021-03-11 04:59:40,271 INFO L130 PetriNetUnfolder]: For 515072/518958 co-relation queries the response was YES. [2021-03-11 04:59:40,379 INFO L84 FinitePrefix]: Finished finitePrefix Result has 92267 conditions, 13876 events. 463/13876 cut-off events. For 515072/518958 co-relation queries the response was YES. Maximal size of possible extension queue 2340. Compared 261825 event pairs, 463 based on Foata normal form. 45/13374 useless extension candidates. Maximal degree in co-relation 92105. Up to 2009 conditions per place. [2021-03-11 04:59:40,408 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 661 selfloop transitions, 462 changer transitions 1/1145 dead transitions. [2021-03-11 04:59:40,409 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 529 places, 1145 transitions, 54570 flow [2021-03-11 04:59:40,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 04:59:40,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 04:59:40,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 04:59:40,410 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 04:59:40,410 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 04:59:40,410 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 04:59:40,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:59:40,410 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 04:59:40,410 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:59:40,411 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:59:40,411 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:59:40,411 INFO L185 Difference]: Start difference. First operand has 522 places, 1089 transitions, 50115 flow. Second operand 9 states and 674 transitions. [2021-03-11 04:59:40,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 529 places, 1145 transitions, 54570 flow [2021-03-11 04:59:44,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 525 places, 1145 transitions, 53884 flow, removed 12 selfloop flow, removed 4 redundant places. [2021-03-11 04:59:44,681 INFO L241 Difference]: Finished difference. Result has 527 places, 1103 transitions, 51105 flow [2021-03-11 04:59:44,681 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=49439, PETRI_DIFFERENCE_MINUEND_PLACES=517, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1089, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=447, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=627, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=51105, PETRI_PLACES=527, PETRI_TRANSITIONS=1103} [2021-03-11 04:59:44,681 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 476 predicate places. [2021-03-11 04:59:44,681 INFO L480 AbstractCegarLoop]: Abstraction has has 527 places, 1103 transitions, 51105 flow [2021-03-11 04:59:44,681 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:59:44,681 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:59:44,681 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:59:44,681 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2021-03-11 04:59:44,682 INFO L428 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:59:44,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:59:44,682 INFO L82 PathProgramCache]: Analyzing trace with hash 908095169, now seen corresponding path program 96 times [2021-03-11 04:59:44,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:59:44,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067252849] [2021-03-11 04:59:44,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:59:44,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:59:44,728 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:59:44,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:59:44,728 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:59:44,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:59:44,731 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 04:59:44,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 04:59:44,737 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 04:59:44,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 04:59:44,745 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 04:59:44,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 04:59:44,769 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 04:59:44,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 04:59:44,796 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 04:59:44,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 04:59:44,816 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:59:44,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:59:44,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:59:44,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067252849] [2021-03-11 04:59:44,835 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:59:44,835 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:59:44,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736455116] [2021-03-11 04:59:44,835 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:59:44,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:59:44,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:59:44,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:59:44,836 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:59:44,836 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 527 places, 1103 transitions, 51105 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:59:44,836 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:59:44,836 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:59:44,836 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:59:51,190 INFO L129 PetriNetUnfolder]: 463/13869 cut-off events. [2021-03-11 04:59:51,190 INFO L130 PetriNetUnfolder]: For 519122/523007 co-relation queries the response was YES. [2021-03-11 04:59:51,283 INFO L84 FinitePrefix]: Finished finitePrefix Result has 92773 conditions, 13869 events. 463/13869 cut-off events. For 519122/523007 co-relation queries the response was YES. Maximal size of possible extension queue 2322. Compared 261612 event pairs, 463 based on Foata normal form. 43/13366 useless extension candidates. Maximal degree in co-relation 92610. Up to 2009 conditions per place. [2021-03-11 04:59:51,310 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 658 selfloop transitions, 462 changer transitions 3/1144 dead transitions. [2021-03-11 04:59:51,310 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 534 places, 1144 transitions, 54857 flow [2021-03-11 04:59:51,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 04:59:51,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 04:59:51,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 04:59:51,311 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 04:59:51,311 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 04:59:51,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 04:59:51,311 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:59:51,311 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 04:59:51,311 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:59:51,312 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:59:51,312 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:59:51,312 INFO L185 Difference]: Start difference. First operand has 527 places, 1103 transitions, 51105 flow. Second operand 9 states and 674 transitions. [2021-03-11 04:59:51,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 534 places, 1144 transitions, 54857 flow [2021-03-11 04:59:55,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 529 places, 1144 transitions, 54003 flow, removed 26 selfloop flow, removed 5 redundant places. [2021-03-11 04:59:55,744 INFO L241 Difference]: Finished difference. Result has 530 places, 1100 transitions, 51008 flow [2021-03-11 04:59:55,745 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=50261, PETRI_DIFFERENCE_MINUEND_PLACES=521, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=462, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=641, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=51008, PETRI_PLACES=530, PETRI_TRANSITIONS=1100} [2021-03-11 04:59:55,745 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 479 predicate places. [2021-03-11 04:59:55,745 INFO L480 AbstractCegarLoop]: Abstraction has has 530 places, 1100 transitions, 51008 flow [2021-03-11 04:59:55,745 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:59:55,745 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:59:55,745 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:59:55,745 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2021-03-11 04:59:55,745 INFO L428 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 04:59:55,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:59:55,745 INFO L82 PathProgramCache]: Analyzing trace with hash -711201611, now seen corresponding path program 97 times [2021-03-11 04:59:55,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:59:55,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158838968] [2021-03-11 04:59:55,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:59:55,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:59:55,757 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:59:55,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:59:55,757 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:59:55,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:59:55,761 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 04:59:55,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 04:59:55,767 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 04:59:55,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 04:59:55,775 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 04:59:55,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 04:59:55,788 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 04:59:55,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 04:59:55,816 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 04:59:55,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 04:59:55,837 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 04:59:55,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 04:59:55,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:59:55,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158838968] [2021-03-11 04:59:55,857 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:59:55,857 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 04:59:55,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500297985] [2021-03-11 04:59:55,858 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 04:59:55,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:59:55,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 04:59:55,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 04:59:55,859 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 04:59:55,859 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 530 places, 1100 transitions, 51008 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 04:59:55,859 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:59:55,859 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 04:59:55,859 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 05:00:02,548 INFO L129 PetriNetUnfolder]: 463/13855 cut-off events. [2021-03-11 05:00:02,549 INFO L130 PetriNetUnfolder]: For 517192/520820 co-relation queries the response was YES. [2021-03-11 05:00:02,656 INFO L84 FinitePrefix]: Finished finitePrefix Result has 92781 conditions, 13855 events. 463/13855 cut-off events. For 517192/520820 co-relation queries the response was YES. Maximal size of possible extension queue 2336. Compared 261274 event pairs, 463 based on Foata normal form. 45/13355 useless extension candidates. Maximal degree in co-relation 92618. Up to 2009 conditions per place. [2021-03-11 05:00:02,685 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 640 selfloop transitions, 478 changer transitions 2/1141 dead transitions. [2021-03-11 05:00:02,685 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 537 places, 1141 transitions, 54754 flow [2021-03-11 05:00:02,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 05:00:02,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 05:00:02,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 05:00:02,687 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 05:00:02,687 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 05:00:02,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 05:00:02,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 05:00:02,687 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 05:00:02,687 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 05:00:02,687 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 05:00:02,688 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 05:00:02,688 INFO L185 Difference]: Start difference. First operand has 530 places, 1100 transitions, 51008 flow. Second operand 9 states and 674 transitions. [2021-03-11 05:00:02,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 537 places, 1141 transitions, 54754 flow [2021-03-11 05:00:07,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 530 places, 1141 transitions, 53545 flow, removed 9 selfloop flow, removed 7 redundant places. [2021-03-11 05:00:07,185 INFO L241 Difference]: Finished difference. Result has 531 places, 1098 transitions, 50634 flow [2021-03-11 05:00:07,186 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=49809, PETRI_DIFFERENCE_MINUEND_PLACES=522, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=478, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=622, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=50634, PETRI_PLACES=531, PETRI_TRANSITIONS=1098} [2021-03-11 05:00:07,186 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 480 predicate places. [2021-03-11 05:00:07,186 INFO L480 AbstractCegarLoop]: Abstraction has has 531 places, 1098 transitions, 50634 flow [2021-03-11 05:00:07,186 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 05:00:07,186 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 05:00:07,186 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 05:00:07,186 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2021-03-11 05:00:07,186 INFO L428 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 05:00:07,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 05:00:07,186 INFO L82 PathProgramCache]: Analyzing trace with hash -1787232381, now seen corresponding path program 98 times [2021-03-11 05:00:07,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 05:00:07,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355638563] [2021-03-11 05:00:07,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 05:00:07,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 05:00:07,205 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 05:00:07,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 05:00:07,205 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 05:00:07,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 05:00:07,209 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 05:00:07,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 05:00:07,215 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 05:00:07,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 05:00:07,223 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 05:00:07,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 05:00:07,245 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 05:00:07,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 05:00:07,265 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 05:00:07,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 05:00:07,299 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 05:00:07,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 05:00:07,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 05:00:07,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355638563] [2021-03-11 05:00:07,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 05:00:07,320 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 05:00:07,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319897868] [2021-03-11 05:00:07,320 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 05:00:07,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 05:00:07,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 05:00:07,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 05:00:07,320 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 05:00:07,321 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 531 places, 1098 transitions, 50634 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 05:00:07,321 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 05:00:07,321 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 05:00:07,321 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 05:00:13,917 INFO L129 PetriNetUnfolder]: 463/13845 cut-off events. [2021-03-11 05:00:13,917 INFO L130 PetriNetUnfolder]: For 510918/514528 co-relation queries the response was YES. [2021-03-11 05:00:14,017 INFO L84 FinitePrefix]: Finished finitePrefix Result has 92337 conditions, 13845 events. 463/13845 cut-off events. For 510918/514528 co-relation queries the response was YES. Maximal size of possible extension queue 2334. Compared 261185 event pairs, 463 based on Foata normal form. 45/13345 useless extension candidates. Maximal degree in co-relation 92174. Up to 2009 conditions per place. [2021-03-11 05:00:14,046 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 676 selfloop transitions, 440 changer transitions 2/1139 dead transitions. [2021-03-11 05:00:14,046 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 538 places, 1139 transitions, 54376 flow [2021-03-11 05:00:14,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 05:00:14,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 05:00:14,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 05:00:14,047 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 05:00:14,047 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 05:00:14,047 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 05:00:14,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 05:00:14,047 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 05:00:14,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 05:00:14,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 05:00:14,048 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 05:00:14,048 INFO L185 Difference]: Start difference. First operand has 531 places, 1098 transitions, 50634 flow. Second operand 9 states and 674 transitions. [2021-03-11 05:00:14,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 538 places, 1139 transitions, 54376 flow [2021-03-11 05:00:18,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 532 places, 1139 transitions, 53435 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-03-11 05:00:18,548 INFO L241 Difference]: Finished difference. Result has 533 places, 1096 transitions, 50457 flow [2021-03-11 05:00:18,548 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=49703, PETRI_DIFFERENCE_MINUEND_PLACES=524, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1098, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=440, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=658, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=50457, PETRI_PLACES=533, PETRI_TRANSITIONS=1096} [2021-03-11 05:00:18,548 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 482 predicate places. [2021-03-11 05:00:18,549 INFO L480 AbstractCegarLoop]: Abstraction has has 533 places, 1096 transitions, 50457 flow [2021-03-11 05:00:18,549 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 05:00:18,549 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 05:00:18,549 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 05:00:18,549 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2021-03-11 05:00:18,549 INFO L428 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 05:00:18,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 05:00:18,549 INFO L82 PathProgramCache]: Analyzing trace with hash -2024561523, now seen corresponding path program 99 times [2021-03-11 05:00:18,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 05:00:18,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453202468] [2021-03-11 05:00:18,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 05:00:18,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 05:00:18,559 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 05:00:18,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 05:00:18,560 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 05:00:18,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 05:00:18,571 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 05:00:18,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 05:00:18,578 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 05:00:18,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 05:00:18,586 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 05:00:18,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 05:00:18,598 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 05:00:18,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 05:00:18,614 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 05:00:18,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 05:00:18,636 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 05:00:18,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 05:00:18,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 05:00:18,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453202468] [2021-03-11 05:00:18,658 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 05:00:18,658 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 05:00:18,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094937537] [2021-03-11 05:00:18,659 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 05:00:18,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 05:00:18,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 05:00:18,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 05:00:18,659 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 05:00:18,660 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 533 places, 1096 transitions, 50457 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 05:00:18,660 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 05:00:18,660 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 05:00:18,660 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 05:00:25,186 INFO L129 PetriNetUnfolder]: 463/13835 cut-off events. [2021-03-11 05:00:25,186 INFO L130 PetriNetUnfolder]: For 510375/513993 co-relation queries the response was YES. [2021-03-11 05:00:25,284 INFO L84 FinitePrefix]: Finished finitePrefix Result has 92283 conditions, 13835 events. 463/13835 cut-off events. For 510375/513993 co-relation queries the response was YES. Maximal size of possible extension queue 2332. Compared 260887 event pairs, 463 based on Foata normal form. 45/13335 useless extension candidates. Maximal degree in co-relation 92120. Up to 2009 conditions per place. [2021-03-11 05:00:25,312 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 644 selfloop transitions, 471 changer transitions 1/1137 dead transitions. [2021-03-11 05:00:25,312 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 540 places, 1137 transitions, 54195 flow [2021-03-11 05:00:25,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 05:00:25,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 05:00:25,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 05:00:25,313 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 05:00:25,313 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 05:00:25,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 05:00:25,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 05:00:25,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 05:00:25,314 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 05:00:25,314 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 05:00:25,314 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 05:00:25,314 INFO L185 Difference]: Start difference. First operand has 533 places, 1096 transitions, 50457 flow. Second operand 9 states and 674 transitions. [2021-03-11 05:00:25,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 540 places, 1137 transitions, 54195 flow [2021-03-11 05:00:29,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 534 places, 1137 transitions, 53316 flow, removed 8 selfloop flow, removed 6 redundant places. [2021-03-11 05:00:29,840 INFO L241 Difference]: Finished difference. Result has 535 places, 1095 transitions, 50464 flow [2021-03-11 05:00:29,840 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=49588, PETRI_DIFFERENCE_MINUEND_PLACES=526, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1096, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=471, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=625, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=50464, PETRI_PLACES=535, PETRI_TRANSITIONS=1095} [2021-03-11 05:00:29,840 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 484 predicate places. [2021-03-11 05:00:29,840 INFO L480 AbstractCegarLoop]: Abstraction has has 535 places, 1095 transitions, 50464 flow [2021-03-11 05:00:29,841 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 05:00:29,841 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 05:00:29,841 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 05:00:29,841 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2021-03-11 05:00:29,841 INFO L428 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 05:00:29,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 05:00:29,841 INFO L82 PathProgramCache]: Analyzing trace with hash 602475493, now seen corresponding path program 100 times [2021-03-11 05:00:29,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 05:00:29,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727117402] [2021-03-11 05:00:29,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 05:00:29,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 05:00:29,854 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 05:00:29,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 05:00:29,855 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 05:00:29,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 05:00:29,858 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 05:00:29,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 05:00:29,864 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 05:00:29,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 05:00:29,872 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 05:00:29,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 05:00:29,885 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 05:00:29,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 05:00:29,900 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 05:00:29,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 05:00:29,920 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 05:00:29,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 05:00:29,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 05:00:29,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727117402] [2021-03-11 05:00:29,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 05:00:29,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 05:00:29,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490695597] [2021-03-11 05:00:29,940 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 05:00:29,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 05:00:29,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 05:00:29,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 05:00:29,940 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 05:00:29,941 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 535 places, 1095 transitions, 50464 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 05:00:29,941 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 05:00:29,941 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 05:00:29,941 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 05:00:36,376 INFO L129 PetriNetUnfolder]: 463/13827 cut-off events. [2021-03-11 05:00:36,376 INFO L130 PetriNetUnfolder]: For 509973/513579 co-relation queries the response was YES. [2021-03-11 05:00:36,477 INFO L84 FinitePrefix]: Finished finitePrefix Result has 92268 conditions, 13827 events. 463/13827 cut-off events. For 509973/513579 co-relation queries the response was YES. Maximal size of possible extension queue 2331. Compared 260659 event pairs, 463 based on Foata normal form. 45/13327 useless extension candidates. Maximal degree in co-relation 92105. Up to 2009 conditions per place. [2021-03-11 05:00:36,505 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 642 selfloop transitions, 471 changer transitions 2/1136 dead transitions. [2021-03-11 05:00:36,505 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 542 places, 1136 transitions, 54200 flow [2021-03-11 05:00:36,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 05:00:36,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 05:00:36,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 05:00:36,506 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 05:00:36,506 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 05:00:36,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 05:00:36,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 05:00:36,506 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 05:00:36,507 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 05:00:36,507 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 05:00:36,507 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 05:00:36,507 INFO L185 Difference]: Start difference. First operand has 535 places, 1095 transitions, 50464 flow. Second operand 9 states and 674 transitions. [2021-03-11 05:00:36,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 542 places, 1136 transitions, 54200 flow [2021-03-11 05:00:40,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 537 places, 1136 transitions, 53346 flow, removed 12 selfloop flow, removed 5 redundant places. [2021-03-11 05:00:40,934 INFO L241 Difference]: Finished difference. Result has 538 places, 1093 transitions, 50440 flow [2021-03-11 05:00:40,935 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=49620, PETRI_DIFFERENCE_MINUEND_PLACES=529, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1095, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=471, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=624, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=50440, PETRI_PLACES=538, PETRI_TRANSITIONS=1093} [2021-03-11 05:00:40,935 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 487 predicate places. [2021-03-11 05:00:40,935 INFO L480 AbstractCegarLoop]: Abstraction has has 538 places, 1093 transitions, 50440 flow [2021-03-11 05:00:40,935 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 05:00:40,935 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 05:00:40,935 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 05:00:40,935 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2021-03-11 05:00:40,935 INFO L428 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 05:00:40,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 05:00:40,936 INFO L82 PathProgramCache]: Analyzing trace with hash 972366533, now seen corresponding path program 101 times [2021-03-11 05:00:40,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 05:00:40,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295205844] [2021-03-11 05:00:40,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 05:00:40,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 05:00:40,946 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 05:00:40,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 05:00:40,946 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 05:00:40,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 05:00:40,950 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 05:00:40,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 05:00:40,956 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 05:00:40,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 05:00:40,964 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 05:00:40,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 05:00:40,983 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 05:00:40,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 05:00:41,008 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 05:00:41,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 05:00:41,028 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 05:00:41,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 05:00:41,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 05:00:41,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295205844] [2021-03-11 05:00:41,047 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 05:00:41,047 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 05:00:41,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801605673] [2021-03-11 05:00:41,047 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 05:00:41,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 05:00:41,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 05:00:41,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 05:00:41,048 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 05:00:41,048 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 538 places, 1093 transitions, 50440 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 05:00:41,048 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 05:00:41,048 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 05:00:41,048 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 05:00:47,521 INFO L129 PetriNetUnfolder]: 463/13817 cut-off events. [2021-03-11 05:00:47,521 INFO L130 PetriNetUnfolder]: For 509153/512762 co-relation queries the response was YES. [2021-03-11 05:00:47,619 INFO L84 FinitePrefix]: Finished finitePrefix Result has 92339 conditions, 13817 events. 463/13817 cut-off events. For 509153/512762 co-relation queries the response was YES. Maximal size of possible extension queue 2312. Compared 260462 event pairs, 463 based on Foata normal form. 43/13315 useless extension candidates. Maximal degree in co-relation 92176. Up to 2009 conditions per place. [2021-03-11 05:00:47,646 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 661 selfloop transitions, 451 changer transitions 1/1134 dead transitions. [2021-03-11 05:00:47,646 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 545 places, 1134 transitions, 54172 flow [2021-03-11 05:00:47,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 05:00:47,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 05:00:47,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 05:00:47,647 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 05:00:47,647 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 05:00:47,647 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 05:00:47,647 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 05:00:47,647 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 05:00:47,648 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 05:00:47,648 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 05:00:47,648 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 05:00:47,648 INFO L185 Difference]: Start difference. First operand has 538 places, 1093 transitions, 50440 flow. Second operand 9 states and 674 transitions. [2021-03-11 05:00:47,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 545 places, 1134 transitions, 54172 flow [2021-03-11 05:00:52,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 539 places, 1134 transitions, 53234 flow, removed 8 selfloop flow, removed 6 redundant places. [2021-03-11 05:00:52,104 INFO L241 Difference]: Finished difference. Result has 540 places, 1092 transitions, 50344 flow [2021-03-11 05:00:52,104 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=49512, PETRI_DIFFERENCE_MINUEND_PLACES=531, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1093, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=451, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=642, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=50344, PETRI_PLACES=540, PETRI_TRANSITIONS=1092} [2021-03-11 05:00:52,104 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 489 predicate places. [2021-03-11 05:00:52,104 INFO L480 AbstractCegarLoop]: Abstraction has has 540 places, 1092 transitions, 50344 flow [2021-03-11 05:00:52,105 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 05:00:52,105 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 05:00:52,105 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 05:00:52,105 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2021-03-11 05:00:52,105 INFO L428 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 05:00:52,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 05:00:52,105 INFO L82 PathProgramCache]: Analyzing trace with hash 1881532223, now seen corresponding path program 102 times [2021-03-11 05:00:52,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 05:00:52,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848426564] [2021-03-11 05:00:52,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 05:00:52,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 05:00:52,114 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 05:00:52,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 05:00:52,115 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 05:00:52,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 05:00:52,118 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 05:00:52,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 05:00:52,124 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 05:00:52,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 05:00:52,132 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 05:00:52,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 05:00:52,152 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 05:00:52,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 05:00:52,176 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 05:00:52,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 05:00:52,197 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 05:00:52,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 05:00:52,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 05:00:52,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848426564] [2021-03-11 05:00:52,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 05:00:52,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 05:00:52,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933357753] [2021-03-11 05:00:52,216 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 05:00:52,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 05:00:52,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 05:00:52,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 05:00:52,217 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 05:00:52,217 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 540 places, 1092 transitions, 50344 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 05:00:52,217 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 05:00:52,217 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 05:00:52,217 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 05:00:58,606 INFO L129 PetriNetUnfolder]: 463/13809 cut-off events. [2021-03-11 05:00:58,607 INFO L130 PetriNetUnfolder]: For 508865/512258 co-relation queries the response was YES. [2021-03-11 05:00:58,702 INFO L84 FinitePrefix]: Finished finitePrefix Result has 92321 conditions, 13809 events. 463/13809 cut-off events. For 508865/512258 co-relation queries the response was YES. Maximal size of possible extension queue 2328. Compared 260297 event pairs, 463 based on Foata normal form. 45/13309 useless extension candidates. Maximal degree in co-relation 92158. Up to 2009 conditions per place. [2021-03-11 05:00:58,728 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 659 selfloop transitions, 451 changer transitions 2/1133 dead transitions. [2021-03-11 05:00:58,728 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 547 places, 1133 transitions, 54074 flow [2021-03-11 05:00:58,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 05:00:58,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 05:00:58,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 05:00:58,729 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 05:00:58,729 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 05:00:58,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 05:00:58,729 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 05:00:58,729 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 05:00:58,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 05:00:58,730 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 05:00:58,730 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 05:00:58,730 INFO L185 Difference]: Start difference. First operand has 540 places, 1092 transitions, 50344 flow. Second operand 9 states and 674 transitions. [2021-03-11 05:00:58,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 547 places, 1133 transitions, 54074 flow [2021-03-11 05:01:03,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 541 places, 1133 transitions, 53181 flow, removed 10 selfloop flow, removed 6 redundant places. [2021-03-11 05:01:03,102 INFO L241 Difference]: Finished difference. Result has 542 places, 1090 transitions, 50230 flow [2021-03-11 05:01:03,102 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=49461, PETRI_DIFFERENCE_MINUEND_PLACES=533, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1092, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=451, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=641, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=50230, PETRI_PLACES=542, PETRI_TRANSITIONS=1090} [2021-03-11 05:01:03,102 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 491 predicate places. [2021-03-11 05:01:03,102 INFO L480 AbstractCegarLoop]: Abstraction has has 542 places, 1090 transitions, 50230 flow [2021-03-11 05:01:03,102 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 05:01:03,102 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 05:01:03,103 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 05:01:03,103 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2021-03-11 05:01:03,103 INFO L428 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 05:01:03,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 05:01:03,103 INFO L82 PathProgramCache]: Analyzing trace with hash 1566521025, now seen corresponding path program 103 times [2021-03-11 05:01:03,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 05:01:03,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381245975] [2021-03-11 05:01:03,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 05:01:03,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 05:01:03,112 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 05:01:03,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 05:01:03,113 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 05:01:03,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 05:01:03,116 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 05:01:03,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 05:01:03,122 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 05:01:03,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 05:01:03,129 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 05:01:03,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 05:01:03,140 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 05:01:03,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 05:01:03,158 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 05:01:03,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 05:01:03,179 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 05:01:03,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 05:01:03,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 05:01:03,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381245975] [2021-03-11 05:01:03,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 05:01:03,198 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 05:01:03,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356337919] [2021-03-11 05:01:03,198 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 05:01:03,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 05:01:03,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 05:01:03,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 05:01:03,199 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 05:01:03,199 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 542 places, 1090 transitions, 50230 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 05:01:03,199 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 05:01:03,199 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 05:01:03,199 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 05:01:09,541 INFO L129 PetriNetUnfolder]: 463/13799 cut-off events. [2021-03-11 05:01:09,541 INFO L130 PetriNetUnfolder]: For 505746/509131 co-relation queries the response was YES. [2021-03-11 05:01:09,634 INFO L84 FinitePrefix]: Finished finitePrefix Result has 92366 conditions, 13799 events. 463/13799 cut-off events. For 505746/509131 co-relation queries the response was YES. Maximal size of possible extension queue 2326. Compared 260100 event pairs, 463 based on Foata normal form. 45/13299 useless extension candidates. Maximal degree in co-relation 92204. Up to 2009 conditions per place. [2021-03-11 05:01:09,661 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 687 selfloop transitions, 433 changer transitions 2/1143 dead transitions. [2021-03-11 05:01:09,661 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 549 places, 1143 transitions, 54501 flow [2021-03-11 05:01:09,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 05:01:09,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 05:01:09,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 05:01:09,662 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 05:01:09,662 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 05:01:09,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 05:01:09,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 05:01:09,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 05:01:09,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 05:01:09,663 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 05:01:09,663 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 05:01:09,663 INFO L185 Difference]: Start difference. First operand has 542 places, 1090 transitions, 50230 flow. Second operand 9 states and 674 transitions. [2021-03-11 05:01:09,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 549 places, 1143 transitions, 54501 flow [2021-03-11 05:01:14,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 543 places, 1143 transitions, 53617 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-03-11 05:01:14,060 INFO L241 Difference]: Finished difference. Result has 545 places, 1100 transitions, 50694 flow [2021-03-11 05:01:14,061 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=49356, PETRI_DIFFERENCE_MINUEND_PLACES=535, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1090, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=421, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=657, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=50694, PETRI_PLACES=545, PETRI_TRANSITIONS=1100} [2021-03-11 05:01:14,061 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 494 predicate places. [2021-03-11 05:01:14,061 INFO L480 AbstractCegarLoop]: Abstraction has has 545 places, 1100 transitions, 50694 flow [2021-03-11 05:01:14,061 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 05:01:14,061 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 05:01:14,061 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 05:01:14,061 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2021-03-11 05:01:14,061 INFO L428 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 05:01:14,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 05:01:14,062 INFO L82 PathProgramCache]: Analyzing trace with hash 1765650433, now seen corresponding path program 104 times [2021-03-11 05:01:14,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 05:01:14,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380719586] [2021-03-11 05:01:14,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 05:01:14,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 05:01:14,071 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 05:01:14,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 05:01:14,071 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 05:01:14,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 05:01:14,075 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 05:01:14,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 05:01:14,081 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 05:01:14,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 05:01:14,089 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 05:01:14,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 05:01:14,101 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 05:01:14,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 05:01:14,117 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 05:01:14,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 05:01:14,137 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 05:01:14,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 05:01:14,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 05:01:14,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380719586] [2021-03-11 05:01:14,156 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 05:01:14,156 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 05:01:14,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339702165] [2021-03-11 05:01:14,156 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 05:01:14,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 05:01:14,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 05:01:14,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 05:01:14,156 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 05:01:14,157 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 545 places, 1100 transitions, 50694 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 05:01:14,157 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 05:01:14,157 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 05:01:14,157 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 05:01:20,567 INFO L129 PetriNetUnfolder]: 463/13790 cut-off events. [2021-03-11 05:01:20,567 INFO L130 PetriNetUnfolder]: For 508196/511589 co-relation queries the response was YES. [2021-03-11 05:01:20,659 INFO L84 FinitePrefix]: Finished finitePrefix Result has 92343 conditions, 13790 events. 463/13790 cut-off events. For 508196/511589 co-relation queries the response was YES. Maximal size of possible extension queue 2324. Compared 259850 event pairs, 463 based on Foata normal form. 45/13291 useless extension candidates. Maximal degree in co-relation 92180. Up to 2009 conditions per place. [2021-03-11 05:01:20,685 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 688 selfloop transitions, 430 changer transitions 2/1141 dead transitions. [2021-03-11 05:01:20,686 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 552 places, 1141 transitions, 54458 flow [2021-03-11 05:01:20,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 05:01:20,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 05:01:20,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 05:01:20,686 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 05:01:20,687 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 05:01:20,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 05:01:20,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 05:01:20,687 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 05:01:20,687 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 05:01:20,687 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 05:01:20,687 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 05:01:20,688 INFO L185 Difference]: Start difference. First operand has 545 places, 1100 transitions, 50694 flow. Second operand 9 states and 674 transitions. [2021-03-11 05:01:20,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 552 places, 1141 transitions, 54458 flow [2021-03-11 05:01:25,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 548 places, 1141 transitions, 53752 flow, removed 22 selfloop flow, removed 4 redundant places. [2021-03-11 05:01:25,141 INFO L241 Difference]: Finished difference. Result has 549 places, 1098 transitions, 50740 flow [2021-03-11 05:01:25,141 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=49998, PETRI_DIFFERENCE_MINUEND_PLACES=540, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=430, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=670, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=50740, PETRI_PLACES=549, PETRI_TRANSITIONS=1098} [2021-03-11 05:01:25,141 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 498 predicate places. [2021-03-11 05:01:25,141 INFO L480 AbstractCegarLoop]: Abstraction has has 549 places, 1098 transitions, 50740 flow [2021-03-11 05:01:25,142 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 05:01:25,142 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 05:01:25,142 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 05:01:25,142 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2021-03-11 05:01:25,142 INFO L428 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 05:01:25,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 05:01:25,142 INFO L82 PathProgramCache]: Analyzing trace with hash -483842395, now seen corresponding path program 105 times [2021-03-11 05:01:25,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 05:01:25,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42679102] [2021-03-11 05:01:25,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 05:01:25,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 05:01:25,150 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 05:01:25,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 05:01:25,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 05:01:25,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 05:01:25,154 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 05:01:25,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 05:01:25,160 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 05:01:25,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 05:01:25,168 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 05:01:25,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 05:01:25,179 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 05:01:25,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 05:01:25,194 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 05:01:25,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 05:01:25,219 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 05:01:25,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 05:01:25,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 05:01:25,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42679102] [2021-03-11 05:01:25,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 05:01:25,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 05:01:25,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371791387] [2021-03-11 05:01:25,239 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 05:01:25,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 05:01:25,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 05:01:25,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 05:01:25,240 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 05:01:25,240 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 549 places, 1098 transitions, 50740 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 05:01:25,240 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 05:01:25,240 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 05:01:25,240 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 05:01:31,669 INFO L129 PetriNetUnfolder]: 463/13778 cut-off events. [2021-03-11 05:01:31,669 INFO L130 PetriNetUnfolder]: For 508611/511992 co-relation queries the response was YES. [2021-03-11 05:01:31,764 INFO L84 FinitePrefix]: Finished finitePrefix Result has 92708 conditions, 13778 events. 463/13778 cut-off events. For 508611/511992 co-relation queries the response was YES. Maximal size of possible extension queue 2321. Compared 259561 event pairs, 463 based on Foata normal form. 45/13279 useless extension candidates. Maximal degree in co-relation 92545. Up to 2009 conditions per place. [2021-03-11 05:01:31,791 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 690 selfloop transitions, 426 changer transitions 2/1139 dead transitions. [2021-03-11 05:01:31,792 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 556 places, 1139 transitions, 54500 flow [2021-03-11 05:01:31,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 05:01:31,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 05:01:31,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 05:01:31,792 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 05:01:31,792 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 05:01:31,793 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 05:01:31,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 05:01:31,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 05:01:31,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 05:01:31,793 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 05:01:31,793 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 05:01:31,793 INFO L185 Difference]: Start difference. First operand has 549 places, 1098 transitions, 50740 flow. Second operand 9 states and 674 transitions. [2021-03-11 05:01:31,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 556 places, 1139 transitions, 54500 flow [2021-03-11 05:01:36,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 550 places, 1139 transitions, 53576 flow, removed 12 selfloop flow, removed 6 redundant places. [2021-03-11 05:01:36,223 INFO L241 Difference]: Finished difference. Result has 551 places, 1096 transitions, 50556 flow [2021-03-11 05:01:36,223 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=49826, PETRI_DIFFERENCE_MINUEND_PLACES=542, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1098, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=426, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=672, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=50556, PETRI_PLACES=551, PETRI_TRANSITIONS=1096} [2021-03-11 05:01:36,223 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 500 predicate places. [2021-03-11 05:01:36,223 INFO L480 AbstractCegarLoop]: Abstraction has has 551 places, 1096 transitions, 50556 flow [2021-03-11 05:01:36,224 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 05:01:36,224 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 05:01:36,224 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 05:01:36,224 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2021-03-11 05:01:36,224 INFO L428 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 05:01:36,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 05:01:36,224 INFO L82 PathProgramCache]: Analyzing trace with hash 930360373, now seen corresponding path program 106 times [2021-03-11 05:01:36,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 05:01:36,224 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097482267] [2021-03-11 05:01:36,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 05:01:36,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 05:01:36,262 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 05:01:36,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 05:01:36,263 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 05:01:36,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 05:01:36,266 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 05:01:36,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 05:01:36,272 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 05:01:36,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 05:01:36,280 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 05:01:36,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 05:01:36,292 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 05:01:36,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 05:01:36,307 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 05:01:36,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 05:01:36,327 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 05:01:36,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 05:01:36,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 05:01:36,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097482267] [2021-03-11 05:01:36,346 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 05:01:36,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 05:01:36,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185315863] [2021-03-11 05:01:36,346 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 05:01:36,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 05:01:36,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 05:01:36,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 05:01:36,347 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 05:01:36,347 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 551 places, 1096 transitions, 50556 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 05:01:36,347 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 05:01:36,347 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 05:01:36,347 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 05:01:42,671 INFO L129 PetriNetUnfolder]: 463/13768 cut-off events. [2021-03-11 05:01:42,671 INFO L130 PetriNetUnfolder]: For 506721/510112 co-relation queries the response was YES. [2021-03-11 05:01:42,763 INFO L84 FinitePrefix]: Finished finitePrefix Result has 92426 conditions, 13768 events. 463/13768 cut-off events. For 506721/510112 co-relation queries the response was YES. Maximal size of possible extension queue 2319. Compared 259412 event pairs, 463 based on Foata normal form. 45/13269 useless extension candidates. Maximal degree in co-relation 92263. Up to 2009 conditions per place. [2021-03-11 05:01:42,791 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 696 selfloop transitions, 419 changer transitions 1/1137 dead transitions. [2021-03-11 05:01:42,791 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 558 places, 1137 transitions, 54312 flow [2021-03-11 05:01:42,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 05:01:42,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 05:01:42,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 05:01:42,792 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 05:01:42,792 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 05:01:42,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 05:01:42,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 05:01:42,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 05:01:42,792 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 05:01:42,793 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 05:01:42,793 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 05:01:42,793 INFO L185 Difference]: Start difference. First operand has 551 places, 1096 transitions, 50556 flow. Second operand 9 states and 674 transitions. [2021-03-11 05:01:42,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 558 places, 1137 transitions, 54312 flow [2021-03-11 05:01:47,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 552 places, 1137 transitions, 53466 flow, removed 9 selfloop flow, removed 6 redundant places. [2021-03-11 05:01:47,183 INFO L241 Difference]: Finished difference. Result has 553 places, 1095 transitions, 50492 flow [2021-03-11 05:01:47,183 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=49720, PETRI_DIFFERENCE_MINUEND_PLACES=544, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1096, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=419, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=677, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=50492, PETRI_PLACES=553, PETRI_TRANSITIONS=1095} [2021-03-11 05:01:47,183 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 502 predicate places. [2021-03-11 05:01:47,183 INFO L480 AbstractCegarLoop]: Abstraction has has 553 places, 1095 transitions, 50492 flow [2021-03-11 05:01:47,183 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 05:01:47,183 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 05:01:47,183 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 05:01:47,183 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2021-03-11 05:01:47,184 INFO L428 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 05:01:47,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 05:01:47,184 INFO L82 PathProgramCache]: Analyzing trace with hash -2067903943, now seen corresponding path program 107 times [2021-03-11 05:01:47,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 05:01:47,184 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687339333] [2021-03-11 05:01:47,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 05:01:47,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 05:01:47,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 05:01:47,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 05:01:47,194 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 05:01:47,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 05:01:47,197 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 05:01:47,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 05:01:47,203 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 05:01:47,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 05:01:47,210 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 05:01:47,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 05:01:47,222 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 05:01:47,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 05:01:47,242 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 05:01:47,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 05:01:47,266 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 05:01:47,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 05:01:47,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 05:01:47,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687339333] [2021-03-11 05:01:47,288 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 05:01:47,288 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 05:01:47,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372572089] [2021-03-11 05:01:47,288 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 05:01:47,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 05:01:47,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 05:01:47,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 05:01:47,289 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 05:01:47,289 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 553 places, 1095 transitions, 50492 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 05:01:47,289 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 05:01:47,289 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 05:01:47,289 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 05:01:53,728 INFO L129 PetriNetUnfolder]: 463/13760 cut-off events. [2021-03-11 05:01:53,729 INFO L130 PetriNetUnfolder]: For 506366/509754 co-relation queries the response was YES. [2021-03-11 05:01:53,820 INFO L84 FinitePrefix]: Finished finitePrefix Result has 92407 conditions, 13760 events. 463/13760 cut-off events. For 506366/509754 co-relation queries the response was YES. Maximal size of possible extension queue 2301. Compared 259164 event pairs, 463 based on Foata normal form. 43/13259 useless extension candidates. Maximal degree in co-relation 92244. Up to 2009 conditions per place. [2021-03-11 05:01:53,846 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 580 selfloop transitions, 533 changer transitions 2/1136 dead transitions. [2021-03-11 05:01:53,846 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 560 places, 1136 transitions, 54246 flow [2021-03-11 05:01:53,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 05:01:53,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 05:01:53,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 05:01:53,847 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 05:01:53,847 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 05:01:53,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 05:01:53,847 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 05:01:53,847 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 05:01:53,847 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 05:01:53,848 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 05:01:53,848 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 05:01:53,848 INFO L185 Difference]: Start difference. First operand has 553 places, 1095 transitions, 50492 flow. Second operand 9 states and 674 transitions. [2021-03-11 05:01:53,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 560 places, 1136 transitions, 54246 flow [2021-03-11 05:01:58,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 555 places, 1136 transitions, 53449 flow, removed 8 selfloop flow, removed 5 redundant places. [2021-03-11 05:01:58,219 INFO L241 Difference]: Finished difference. Result has 557 places, 1129 transitions, 52414 flow [2021-03-11 05:01:58,220 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=49705, PETRI_DIFFERENCE_MINUEND_PLACES=547, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1095, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=497, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=562, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=52414, PETRI_PLACES=557, PETRI_TRANSITIONS=1129} [2021-03-11 05:01:58,220 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 506 predicate places. [2021-03-11 05:01:58,220 INFO L480 AbstractCegarLoop]: Abstraction has has 557 places, 1129 transitions, 52414 flow [2021-03-11 05:01:58,220 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 05:01:58,220 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 05:01:58,220 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 05:01:58,220 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2021-03-11 05:01:58,220 INFO L428 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 05:01:58,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 05:01:58,221 INFO L82 PathProgramCache]: Analyzing trace with hash -1730480269, now seen corresponding path program 108 times [2021-03-11 05:01:58,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 05:01:58,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705052917] [2021-03-11 05:01:58,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 05:01:58,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 05:01:58,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 05:01:58,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 05:01:58,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 05:01:58,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 05:01:58,243 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 05:01:58,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 05:01:58,248 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 05:01:58,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 05:01:58,256 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 05:01:58,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 05:01:58,267 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 05:01:58,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 05:01:58,284 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 05:01:58,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 05:01:58,307 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 05:01:58,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 05:01:58,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 05:01:58,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705052917] [2021-03-11 05:01:58,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 05:01:58,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 05:01:58,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898778947] [2021-03-11 05:01:58,329 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 05:01:58,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 05:01:58,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 05:01:58,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 05:01:58,330 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 05:01:58,330 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 557 places, 1129 transitions, 52414 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 05:01:58,330 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 05:01:58,330 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 05:01:58,330 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 05:02:04,797 INFO L129 PetriNetUnfolder]: 463/13752 cut-off events. [2021-03-11 05:02:04,797 INFO L130 PetriNetUnfolder]: For 512810/516195 co-relation queries the response was YES. [2021-03-11 05:02:04,888 INFO L84 FinitePrefix]: Finished finitePrefix Result has 92628 conditions, 13752 events. 463/13752 cut-off events. For 512810/516195 co-relation queries the response was YES. Maximal size of possible extension queue 2317. Compared 259048 event pairs, 463 based on Foata normal form. 45/13254 useless extension candidates. Maximal degree in co-relation 92464. Up to 2009 conditions per place. [2021-03-11 05:02:04,915 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 695 selfloop transitions, 416 changer transitions 2/1134 dead transitions. [2021-03-11 05:02:04,915 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 564 places, 1134 transitions, 54660 flow [2021-03-11 05:02:04,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 05:02:04,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 05:02:04,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 05:02:04,916 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 05:02:04,916 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 05:02:04,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 05:02:04,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 05:02:04,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 05:02:04,917 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 05:02:04,917 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 05:02:04,917 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 05:02:04,917 INFO L185 Difference]: Start difference. First operand has 557 places, 1129 transitions, 52414 flow. Second operand 9 states and 674 transitions. [2021-03-11 05:02:04,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 564 places, 1134 transitions, 54660 flow [2021-03-11 05:02:09,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 558 places, 1134 transitions, 53815 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-03-11 05:02:09,348 INFO L241 Difference]: Finished difference. Result has 559 places, 1127 transitions, 52276 flow [2021-03-11 05:02:09,348 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=51579, PETRI_DIFFERENCE_MINUEND_PLACES=550, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=416, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=713, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=52276, PETRI_PLACES=559, PETRI_TRANSITIONS=1127} [2021-03-11 05:02:09,348 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 508 predicate places. [2021-03-11 05:02:09,348 INFO L480 AbstractCegarLoop]: Abstraction has has 559 places, 1127 transitions, 52276 flow [2021-03-11 05:02:09,349 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 05:02:09,349 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 05:02:09,349 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 05:02:09,349 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2021-03-11 05:02:09,349 INFO L428 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 05:02:09,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 05:02:09,349 INFO L82 PathProgramCache]: Analyzing trace with hash 1634000449, now seen corresponding path program 109 times [2021-03-11 05:02:09,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 05:02:09,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071488842] [2021-03-11 05:02:09,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 05:02:09,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 05:02:09,357 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 05:02:09,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 05:02:09,358 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 05:02:09,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 05:02:09,361 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 05:02:09,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 05:02:09,367 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 05:02:09,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 05:02:09,375 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 05:02:09,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 05:02:09,387 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 05:02:09,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 05:02:09,403 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 05:02:09,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 05:02:09,422 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 05:02:09,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 05:02:09,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 05:02:09,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071488842] [2021-03-11 05:02:09,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 05:02:09,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 05:02:09,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083563844] [2021-03-11 05:02:09,450 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 05:02:09,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 05:02:09,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 05:02:09,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 05:02:09,451 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 05:02:09,451 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 559 places, 1127 transitions, 52276 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 05:02:09,451 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 05:02:09,451 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 05:02:09,451 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 05:02:15,784 INFO L129 PetriNetUnfolder]: 463/13742 cut-off events. [2021-03-11 05:02:15,784 INFO L130 PetriNetUnfolder]: For 513474/516867 co-relation queries the response was YES. [2021-03-11 05:02:15,880 INFO L84 FinitePrefix]: Finished finitePrefix Result has 92780 conditions, 13742 events. 463/13742 cut-off events. For 513474/516867 co-relation queries the response was YES. Maximal size of possible extension queue 2315. Compared 258698 event pairs, 463 based on Foata normal form. 45/13244 useless extension candidates. Maximal degree in co-relation 92616. Up to 2009 conditions per place. [2021-03-11 05:02:15,911 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 582 selfloop transitions, 527 changer transitions 2/1132 dead transitions. [2021-03-11 05:02:15,912 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 566 places, 1132 transitions, 54518 flow [2021-03-11 05:02:15,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 05:02:15,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 05:02:15,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 05:02:15,912 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-03-11 05:02:15,913 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 05:02:15,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 05:02:15,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 05:02:15,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 05:02:15,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 05:02:15,913 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 05:02:15,913 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 05:02:15,914 INFO L185 Difference]: Start difference. First operand has 559 places, 1127 transitions, 52276 flow. Second operand 9 states and 674 transitions. [2021-03-11 05:02:15,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 566 places, 1132 transitions, 54518 flow [2021-03-11 05:02:20,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 560 places, 1132 transitions, 53684 flow, removed 8 selfloop flow, removed 6 redundant places. [2021-03-11 05:02:20,395 INFO L241 Difference]: Finished difference. Result has 561 places, 1125 transitions, 52373 flow [2021-03-11 05:02:20,395 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=51452, PETRI_DIFFERENCE_MINUEND_PLACES=552, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=527, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=600, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=52373, PETRI_PLACES=561, PETRI_TRANSITIONS=1125} [2021-03-11 05:02:20,396 INFO L335 CegarLoopForPetriNet]: 51 programPoint places, 510 predicate places. [2021-03-11 05:02:20,396 INFO L480 AbstractCegarLoop]: Abstraction has has 561 places, 1125 transitions, 52373 flow [2021-03-11 05:02:20,396 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 05:02:20,396 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 05:02:20,396 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 05:02:20,396 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2021-03-11 05:02:20,396 INFO L428 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 05:02:20,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 05:02:20,396 INFO L82 PathProgramCache]: Analyzing trace with hash 384196709, now seen corresponding path program 110 times [2021-03-11 05:02:20,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 05:02:20,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455412508] [2021-03-11 05:02:20,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 05:02:20,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 05:02:20,404 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 05:02:20,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 05:02:20,404 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 05:02:20,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 05:02:20,408 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 05:02:20,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 05:02:20,413 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 05:02:20,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 05:02:20,422 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 05:02:20,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 05:02:20,434 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 05:02:20,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 05:02:20,449 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 05:02:20,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 05:02:20,469 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 05:02:20,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 05:02:20,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 05:02:20,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455412508] [2021-03-11 05:02:20,488 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 05:02:20,488 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 05:02:20,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106585789] [2021-03-11 05:02:20,490 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 05:02:20,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 05:02:20,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 05:02:20,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 05:02:20,490 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-03-11 05:02:20,490 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 561 places, 1125 transitions, 52373 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 05:02:20,490 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 05:02:20,490 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-03-11 05:02:20,490 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 05:02:22,400 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 26 Received shutdown request... [2021-03-11 05:02:25,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 05:02:25,294 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2021-03-11 05:02:25,294 WARN L545 AbstractCegarLoop]: Verification canceled [2021-03-11 05:02:25,297 WARN L224 ceAbstractionStarter]: Timeout [2021-03-11 05:02:25,298 INFO L202 PluginConnector]: Adding new model example_7.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 05:02:25 BasicIcfg [2021-03-11 05:02:25,298 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 05:02:25,298 INFO L168 Benchmark]: Toolchain (without parser) took 817077.77 ms. Allocated memory was 413.1 MB in the beginning and 13.9 GB in the end (delta: 13.5 GB). Free memory was 393.5 MB in the beginning and 7.6 GB in the end (delta: -7.2 GB). Peak memory consumption was 6.7 GB. Max. memory is 16.0 GB. [2021-03-11 05:02:25,298 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.09 ms. Allocated memory is still 413.1 MB. Free memory was 394.6 MB in the beginning and 394.5 MB in the end (delta: 76.1 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 05:02:25,298 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.27 ms. Allocated memory is still 413.1 MB. Free memory was 393.0 MB in the beginning and 391.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 05:02:25,298 INFO L168 Benchmark]: Boogie Preprocessor took 12.25 ms. Allocated memory is still 413.1 MB. Free memory was 391.5 MB in the beginning and 390.6 MB in the end (delta: 913.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 05:02:25,298 INFO L168 Benchmark]: RCFGBuilder took 171.06 ms. Allocated memory is still 413.1 MB. Free memory was 390.5 MB in the beginning and 379.5 MB in the end (delta: 11.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. [2021-03-11 05:02:25,298 INFO L168 Benchmark]: TraceAbstraction took 816867.54 ms. Allocated memory was 413.1 MB in the beginning and 13.9 GB in the end (delta: 13.5 GB). Free memory was 379.0 MB in the beginning and 7.6 GB in the end (delta: -7.2 GB). Peak memory consumption was 6.7 GB. Max. memory is 16.0 GB. [2021-03-11 05:02:25,298 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 0.09 ms. Allocated memory is still 413.1 MB. Free memory was 394.6 MB in the beginning and 394.5 MB in the end (delta: 76.1 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 20.27 ms. Allocated memory is still 413.1 MB. Free memory was 393.0 MB in the beginning and 391.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 12.25 ms. Allocated memory is still 413.1 MB. Free memory was 391.5 MB in the beginning and 390.6 MB in the end (delta: 913.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 171.06 ms. Allocated memory is still 413.1 MB. Free memory was 390.5 MB in the beginning and 379.5 MB in the end (delta: 11.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. * TraceAbstraction took 816867.54 ms. Allocated memory was 413.1 MB in the beginning and 13.9 GB in the end (delta: 13.5 GB). Free memory was 379.0 MB in the beginning and 7.6 GB in the end (delta: -7.2 GB). Peak memory consumption was 6.7 GB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 27]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 27). Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (9states, 71/80 universal loopers) in iteration 116,while PetriNetUnfolder was constructing finite prefix that currently has 85426 conditions, 8654 events (463/8653 cut-off events. For 511276/514657 co-relation queries the response was YES. Maximal size of possible extension queue 2313. Compared 165256 event pairs, 463 based on Foata normal form. 44/9261 useless extension candidates. Maximal degree in co-relation 85267. Up to 1485 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 45.3ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: TIMEOUT, OverallTime: 816704.5ms, OverallIterations: 116, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 803487.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 140.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2445 SDtfs, 3960 SDslu, 2463 SDs, 0 SdLazy, 4319 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2798.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1008 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 886 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 550 ImplicationChecksByTransitivity, 13045.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=52414occurred in iteration=113, InterpolantAutomatonStates: 999, 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: 52.8ms SsaConstructionTime, 133.4ms SatisfiabilityAnalysisTime, 12343.6ms InterpolantComputationTime, 3364 NumberOfCodeBlocks, 3364 NumberOfCodeBlocksAsserted, 116 NumberOfCheckSat, 3248 ConstructedInterpolants, 0 QuantifiedInterpolants, 103502 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 116 InterpolantComputations, 116 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown