/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/mcr/example_13.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9bbddad6b14272d9691b7fb6f1c011d15ab18596-9bbddad [2021-06-13 08:26:55,107 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-13 08:26:55,109 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-13 08:26:55,138 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-13 08:26:55,138 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-13 08:26:55,141 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-13 08:26:55,144 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-13 08:26:55,149 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-13 08:26:55,150 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-13 08:26:55,154 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-13 08:26:55,155 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-13 08:26:55,156 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-13 08:26:55,156 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-13 08:26:55,158 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-13 08:26:55,159 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-13 08:26:55,159 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-13 08:26:55,160 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-13 08:26:55,161 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-13 08:26:55,165 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-13 08:26:55,167 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-13 08:26:55,175 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-13 08:26:55,176 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-13 08:26:55,177 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-13 08:26:55,178 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-13 08:26:55,179 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-13 08:26:55,181 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-13 08:26:55,181 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-13 08:26:55,181 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-13 08:26:55,182 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-13 08:26:55,182 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-13 08:26:55,183 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-13 08:26:55,183 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-13 08:26:55,183 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-13 08:26:55,183 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-13 08:26:55,184 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-13 08:26:55,184 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-13 08:26:55,188 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 [2021-06-13 08:26:55,221 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-13 08:26:55,221 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-13 08:26:55,223 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-13 08:26:55,223 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-13 08:26:55,223 INFO L138 SettingsManager]: * Use SBE=true [2021-06-13 08:26:55,223 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-13 08:26:55,224 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-13 08:26:55,224 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-13 08:26:55,224 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-13 08:26:55,224 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-13 08:26:55,224 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-13 08:26:55,225 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-13 08:26:55,225 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-13 08:26:55,225 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-13 08:26:55,225 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-13 08:26:55,225 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-13 08:26:55,225 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-13 08:26:55,225 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-13 08:26:55,225 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-13 08:26:55,225 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-13 08:26:55,225 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-13 08:26:55,226 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-13 08:26:55,226 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-13 08:26:55,226 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-13 08:26:55,226 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-13 08:26:55,226 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-13 08:26:55,226 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-13 08:26:55,226 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-13 08:26:55,226 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-13 08:26:55,226 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-13 08:26:55,484 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-13 08:26:55,496 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-13 08:26:55,498 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-13 08:26:55,499 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-13 08:26:55,499 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-13 08:26:55,500 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_13.bpl [2021-06-13 08:26:55,500 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_13.bpl' [2021-06-13 08:26:55,531 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-13 08:26:55,532 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-13 08:26:55,533 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-13 08:26:55,533 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-13 08:26:55,533 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-13 08:26:55,544 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 08:26:55" (1/1) ... [2021-06-13 08:26:55,548 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 08:26:55" (1/1) ... [2021-06-13 08:26:55,552 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-13 08:26:55,553 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-13 08:26:55,553 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-13 08:26:55,553 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-13 08:26:55,558 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 08:26:55" (1/1) ... [2021-06-13 08:26:55,558 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 08:26:55" (1/1) ... [2021-06-13 08:26:55,558 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 08:26:55" (1/1) ... [2021-06-13 08:26:55,558 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 08:26:55" (1/1) ... [2021-06-13 08:26:55,560 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 08:26:55" (1/1) ... [2021-06-13 08:26:55,561 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 08:26:55" (1/1) ... [2021-06-13 08:26:55,561 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 08:26:55" (1/1) ... [2021-06-13 08:26:55,562 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-13 08:26:55,563 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-13 08:26:55,563 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-13 08:26:55,563 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-13 08:26:55,563 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 08:26:55" (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 [2021-06-13 08:26:55,604 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2021-06-13 08:26:55,605 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2021-06-13 08:26:55,605 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2021-06-13 08:26:55,605 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2021-06-13 08:26:55,605 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2021-06-13 08:26:55,605 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2021-06-13 08:26:55,605 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2021-06-13 08:26:55,605 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2021-06-13 08:26:55,605 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2021-06-13 08:26:55,605 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2021-06-13 08:26:55,605 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2021-06-13 08:26:55,606 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2021-06-13 08:26:55,606 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2021-06-13 08:26:55,606 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2021-06-13 08:26:55,606 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2021-06-13 08:26:55,606 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_9 given in one single declaration [2021-06-13 08:26:55,606 INFO L130 BoogieDeclarations]: Found specification of procedure set_9 [2021-06-13 08:26:55,606 INFO L138 BoogieDeclarations]: Found implementation of procedure set_9 [2021-06-13 08:26:55,606 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-13 08:26:55,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-13 08:26:55,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-13 08:26:55,607 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_12 given in one single declaration [2021-06-13 08:26:55,607 INFO L130 BoogieDeclarations]: Found specification of procedure set_12 [2021-06-13 08:26:55,607 INFO L138 BoogieDeclarations]: Found implementation of procedure set_12 [2021-06-13 08:26:55,607 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_5 given in one single declaration [2021-06-13 08:26:55,607 INFO L130 BoogieDeclarations]: Found specification of procedure set_5 [2021-06-13 08:26:55,607 INFO L138 BoogieDeclarations]: Found implementation of procedure set_5 [2021-06-13 08:26:55,607 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_6 given in one single declaration [2021-06-13 08:26:55,607 INFO L130 BoogieDeclarations]: Found specification of procedure set_6 [2021-06-13 08:26:55,607 INFO L138 BoogieDeclarations]: Found implementation of procedure set_6 [2021-06-13 08:26:55,607 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_10 given in one single declaration [2021-06-13 08:26:55,608 INFO L130 BoogieDeclarations]: Found specification of procedure set_10 [2021-06-13 08:26:55,608 INFO L138 BoogieDeclarations]: Found implementation of procedure set_10 [2021-06-13 08:26:55,608 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_7 given in one single declaration [2021-06-13 08:26:55,608 INFO L130 BoogieDeclarations]: Found specification of procedure set_7 [2021-06-13 08:26:55,608 INFO L138 BoogieDeclarations]: Found implementation of procedure set_7 [2021-06-13 08:26:55,608 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_11 given in one single declaration [2021-06-13 08:26:55,608 INFO L130 BoogieDeclarations]: Found specification of procedure set_11 [2021-06-13 08:26:55,608 INFO L138 BoogieDeclarations]: Found implementation of procedure set_11 [2021-06-13 08:26:55,608 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_8 given in one single declaration [2021-06-13 08:26:55,608 INFO L130 BoogieDeclarations]: Found specification of procedure set_8 [2021-06-13 08:26:55,608 INFO L138 BoogieDeclarations]: Found implementation of procedure set_8 [2021-06-13 08:26:55,609 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-13 08:26:55,784 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-13 08:26:55,785 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-13 08:26:55,786 INFO L202 PluginConnector]: Adding new model example_13.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 08:26:55 BoogieIcfgContainer [2021-06-13 08:26:55,786 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-13 08:26:55,787 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-13 08:26:55,787 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-13 08:26:55,789 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-13 08:26:55,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 08:26:55" (1/2) ... [2021-06-13 08:26:55,789 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7308ee7a and model type example_13.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.06 08:26:55, skipping insertion in model container [2021-06-13 08:26:55,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_13.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 08:26:55" (2/2) ... [2021-06-13 08:26:55,790 INFO L111 eAbstractionObserver]: Analyzing ICFG example_13.bpl [2021-06-13 08:26:55,794 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-13 08:26:55,794 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-13 08:26:55,794 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-13 08:26:55,968 INFO L149 ThreadInstanceAdder]: Constructed 169 joinOtherThreadTransitions. [2021-06-13 08:26:55,991 INFO L255 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2021-06-13 08:26:56,016 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-13 08:26:56,016 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-13 08:26:56,017 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-13 08:26:56,017 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-13 08:26:56,017 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-13 08:26:56,017 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-13 08:26:56,017 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-13 08:26:56,017 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-13 08:26:56,029 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 108 places, 224 transitions, 1020 flow [2021-06-13 08:26:59,177 INFO L129 PetriNetUnfolder]: 45057/53290 cut-off events. [2021-06-13 08:26:59,178 INFO L130 PetriNetUnfolder]: For 53248/53248 co-relation queries the response was YES. [2021-06-13 08:26:59,349 INFO L84 FinitePrefix]: Finished finitePrefix Result has 106578 conditions, 53290 events. 45057/53290 cut-off events. For 53248/53248 co-relation queries the response was YES. Maximal size of possible extension queue 1912. Compared 212040 event pairs, 0 based on Foata normal form. 0/53289 useless extension candidates. Maximal degree in co-relation 49214. Up to 12012 conditions per place. [2021-06-13 08:26:59,350 INFO L82 GeneralOperation]: Start removeDead. Operand has 108 places, 224 transitions, 1020 flow [2021-06-13 08:26:59,633 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 93 places, 209 transitions, 964 flow [2021-06-13 08:27:02,408 INFO L129 PetriNetUnfolder]: 45057/53287 cut-off events. [2021-06-13 08:27:02,408 INFO L130 PetriNetUnfolder]: For 53248/53248 co-relation queries the response was YES. [2021-06-13 08:27:02,408 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:27:02,409 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 08:27:02,409 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-06-13 08:27:02,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:27:02,412 INFO L82 PathProgramCache]: Analyzing trace with hash 1758050465, now seen corresponding path program 1 times [2021-06-13 08:27:02,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:27:02,417 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551352700] [2021-06-13 08:27:02,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:27:02,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:27:02,545 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:27:02,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 08:27:02,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:27:02,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 08:27:02,559 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:27:02,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 08:27:02,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:27:02,561 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:27:02,561 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551352700] [2021-06-13 08:27:02,561 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551352700] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:27:02,561 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:27:02,561 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-13 08:27:02,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370198062] [2021-06-13 08:27:02,567 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-13 08:27:02,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:27:02,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-13 08:27:02,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-13 08:27:02,581 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 224 [2021-06-13 08:27:02,586 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 209 transitions, 964 flow. Second operand has 3 states, 3 states have (on average 210.66666666666666) internal successors, (632), 3 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:27:02,586 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:27:02,586 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 224 [2021-06-13 08:27:02,586 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:27:04,652 INFO L129 PetriNetUnfolder]: 27225/32946 cut-off events. [2021-06-13 08:27:04,652 INFO L130 PetriNetUnfolder]: For 43609/43609 co-relation queries the response was YES. [2021-06-13 08:27:04,734 INFO L84 FinitePrefix]: Finished finitePrefix Result has 67480 conditions, 32946 events. 27225/32946 cut-off events. For 43609/43609 co-relation queries the response was YES. Maximal size of possible extension queue 1309. Compared 159621 event pairs, 0 based on Foata normal form. 2510/35456 useless extension candidates. Maximal degree in co-relation 49193. Up to 6435 conditions per place. [2021-06-13 08:27:04,897 INFO L132 encePairwiseOnDemand]: 216/224 looper letters, 6 selfloop transitions, 1 changer transitions 0/202 dead transitions. [2021-06-13 08:27:04,897 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 202 transitions, 943 flow [2021-06-13 08:27:04,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-13 08:27:04,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-13 08:27:04,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 644 transitions. [2021-06-13 08:27:04,909 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9583333333333334 [2021-06-13 08:27:04,909 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 644 transitions. [2021-06-13 08:27:04,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 644 transitions. [2021-06-13 08:27:04,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:27:04,912 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 644 transitions. [2021-06-13 08:27:04,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 214.66666666666666) internal successors, (644), 3 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:27:04,920 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:27:04,920 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:27:04,921 INFO L185 Difference]: Start difference. First operand has 93 places, 209 transitions, 964 flow. Second operand 3 states and 644 transitions. [2021-06-13 08:27:04,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 202 transitions, 943 flow [2021-06-13 08:27:05,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 202 transitions, 593 flow, removed 0 selfloop flow, removed 26 redundant places. [2021-06-13 08:27:05,310 INFO L241 Difference]: Finished difference. Result has 69 places, 202 transitions, 581 flow [2021-06-13 08:27:05,312 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=579, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=581, PETRI_PLACES=69, PETRI_TRANSITIONS=202} [2021-06-13 08:27:05,312 INFO L335 CegarLoopForPetriNet]: 93 programPoint places, -24 predicate places. [2021-06-13 08:27:05,312 INFO L482 AbstractCegarLoop]: Abstraction has has 69 places, 202 transitions, 581 flow [2021-06-13 08:27:05,313 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 210.66666666666666) internal successors, (632), 3 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:27:05,313 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:27:05,313 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 08:27:05,313 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-13 08:27:05,313 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-06-13 08:27:05,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:27:05,314 INFO L82 PathProgramCache]: Analyzing trace with hash 1075171283, now seen corresponding path program 1 times [2021-06-13 08:27:05,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:27:05,314 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150309618] [2021-06-13 08:27:05,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:27:05,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:27:05,334 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:27:05,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 08:27:05,335 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:27:05,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 08:27:05,338 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:27:05,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 08:27:05,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:27:05,339 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:27:05,339 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150309618] [2021-06-13 08:27:05,339 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150309618] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:27:05,339 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:27:05,339 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-13 08:27:05,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147529125] [2021-06-13 08:27:05,340 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-13 08:27:05,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:27:05,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-13 08:27:05,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-13 08:27:05,342 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 224 [2021-06-13 08:27:05,343 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 202 transitions, 581 flow. Second operand has 3 states, 3 states have (on average 210.66666666666666) internal successors, (632), 3 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:27:05,343 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:27:05,343 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 224 [2021-06-13 08:27:05,343 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:27:06,414 INFO L129 PetriNetUnfolder]: 22979/28138 cut-off events. [2021-06-13 08:27:06,414 INFO L130 PetriNetUnfolder]: For 2610/2610 co-relation queries the response was YES. [2021-06-13 08:27:06,450 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30204 conditions, 28138 events. 22979/28138 cut-off events. For 2610/2610 co-relation queries the response was YES. Maximal size of possible extension queue 1309. Compared 127674 event pairs, 0 based on Foata normal form. 562/28700 useless extension candidates. Maximal degree in co-relation 30183. Up to 6435 conditions per place. [2021-06-13 08:27:06,535 INFO L132 encePairwiseOnDemand]: 218/224 looper letters, 8 selfloop transitions, 1 changer transitions 0/197 dead transitions. [2021-06-13 08:27:06,536 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 197 transitions, 584 flow [2021-06-13 08:27:06,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-13 08:27:06,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-13 08:27:06,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 644 transitions. [2021-06-13 08:27:06,537 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9583333333333334 [2021-06-13 08:27:06,537 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 644 transitions. [2021-06-13 08:27:06,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 644 transitions. [2021-06-13 08:27:06,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:27:06,538 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 644 transitions. [2021-06-13 08:27:06,539 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 214.66666666666666) internal successors, (644), 3 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:27:06,541 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:27:06,542 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:27:06,542 INFO L185 Difference]: Start difference. First operand has 69 places, 202 transitions, 581 flow. Second operand 3 states and 644 transitions. [2021-06-13 08:27:06,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 197 transitions, 584 flow [2021-06-13 08:27:06,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 197 transitions, 583 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-13 08:27:06,550 INFO L241 Difference]: Finished difference. Result has 70 places, 197 transitions, 567 flow [2021-06-13 08:27:06,551 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=565, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=567, PETRI_PLACES=70, PETRI_TRANSITIONS=197} [2021-06-13 08:27:06,551 INFO L335 CegarLoopForPetriNet]: 93 programPoint places, -23 predicate places. [2021-06-13 08:27:06,551 INFO L482 AbstractCegarLoop]: Abstraction has has 70 places, 197 transitions, 567 flow [2021-06-13 08:27:06,552 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 210.66666666666666) internal successors, (632), 3 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:27:06,552 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:27:06,552 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 08:27:06,552 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-13 08:27:06,552 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-06-13 08:27:06,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:27:06,553 INFO L82 PathProgramCache]: Analyzing trace with hash -296028313, now seen corresponding path program 1 times [2021-06-13 08:27:06,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:27:06,554 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427285709] [2021-06-13 08:27:06,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:27:06,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:27:06,597 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:27:06,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 08:27:06,598 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:27:06,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 08:27:06,600 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:27:06,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 08:27:06,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:27:06,601 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:27:06,601 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427285709] [2021-06-13 08:27:06,601 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427285709] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:27:06,601 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:27:06,601 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-13 08:27:06,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147663806] [2021-06-13 08:27:06,602 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-13 08:27:06,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:27:06,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-13 08:27:06,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-13 08:27:06,603 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 224 [2021-06-13 08:27:06,603 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 197 transitions, 567 flow. Second operand has 3 states, 3 states have (on average 210.66666666666666) internal successors, (632), 3 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:27:06,603 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:27:06,603 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 224 [2021-06-13 08:27:06,604 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:27:07,651 INFO L129 PetriNetUnfolder]: 22879/28027 cut-off events. [2021-06-13 08:27:07,651 INFO L130 PetriNetUnfolder]: For 2224/2224 co-relation queries the response was YES. [2021-06-13 08:27:07,699 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30259 conditions, 28027 events. 22879/28027 cut-off events. For 2224/2224 co-relation queries the response was YES. Maximal size of possible extension queue 1309. Compared 136851 event pairs, 0 based on Foata normal form. 11/28038 useless extension candidates. Maximal degree in co-relation 30242. Up to 6435 conditions per place. [2021-06-13 08:27:07,789 INFO L132 encePairwiseOnDemand]: 221/224 looper letters, 11 selfloop transitions, 1 changer transitions 0/195 dead transitions. [2021-06-13 08:27:07,790 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 195 transitions, 585 flow [2021-06-13 08:27:07,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-13 08:27:07,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-13 08:27:07,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 644 transitions. [2021-06-13 08:27:07,792 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9583333333333334 [2021-06-13 08:27:07,792 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 644 transitions. [2021-06-13 08:27:07,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 644 transitions. [2021-06-13 08:27:07,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:27:07,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 644 transitions. [2021-06-13 08:27:07,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 214.66666666666666) internal successors, (644), 3 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:27:07,795 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:27:07,795 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:27:07,795 INFO L185 Difference]: Start difference. First operand has 70 places, 197 transitions, 567 flow. Second operand 3 states and 644 transitions. [2021-06-13 08:27:07,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 195 transitions, 585 flow [2021-06-13 08:27:07,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 195 transitions, 584 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-13 08:27:07,800 INFO L241 Difference]: Finished difference. Result has 71 places, 195 transitions, 562 flow [2021-06-13 08:27:07,800 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=560, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=562, PETRI_PLACES=71, PETRI_TRANSITIONS=195} [2021-06-13 08:27:07,800 INFO L335 CegarLoopForPetriNet]: 93 programPoint places, -22 predicate places. [2021-06-13 08:27:07,800 INFO L482 AbstractCegarLoop]: Abstraction has has 71 places, 195 transitions, 562 flow [2021-06-13 08:27:07,801 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 210.66666666666666) internal successors, (632), 3 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:27:07,801 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:27:07,801 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 08:27:07,801 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-13 08:27:07,801 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-06-13 08:27:07,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:27:07,801 INFO L82 PathProgramCache]: Analyzing trace with hash 541465291, now seen corresponding path program 1 times [2021-06-13 08:27:07,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:27:07,802 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945817879] [2021-06-13 08:27:07,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:27:07,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:27:07,825 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:27:07,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 08:27:07,826 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:27:07,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 08:27:07,829 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:27:07,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 08:27:07,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:27:07,831 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:27:07,831 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945817879] [2021-06-13 08:27:07,831 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945817879] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:27:07,831 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:27:07,831 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-13 08:27:07,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297015153] [2021-06-13 08:27:07,832 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-13 08:27:07,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:27:07,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-13 08:27:07,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-13 08:27:07,834 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 224 [2021-06-13 08:27:07,835 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 195 transitions, 562 flow. Second operand has 3 states, 3 states have (on average 210.66666666666666) internal successors, (632), 3 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:27:07,835 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:27:07,835 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 224 [2021-06-13 08:27:07,835 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:27:08,612 INFO L129 PetriNetUnfolder]: 17566/21867 cut-off events. [2021-06-13 08:27:08,612 INFO L130 PetriNetUnfolder]: For 2214/2214 co-relation queries the response was YES. [2021-06-13 08:27:08,645 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23473 conditions, 21867 events. 17566/21867 cut-off events. For 2214/2214 co-relation queries the response was YES. Maximal size of possible extension queue 1309. Compared 110993 event pairs, 0 based on Foata normal form. 628/22495 useless extension candidates. Maximal degree in co-relation 23463. Up to 6435 conditions per place. [2021-06-13 08:27:08,700 INFO L132 encePairwiseOnDemand]: 217/224 looper letters, 7 selfloop transitions, 1 changer transitions 0/189 dead transitions. [2021-06-13 08:27:08,700 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 189 transitions, 560 flow [2021-06-13 08:27:08,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-13 08:27:08,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-13 08:27:08,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 644 transitions. [2021-06-13 08:27:08,704 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9583333333333334 [2021-06-13 08:27:08,704 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 644 transitions. [2021-06-13 08:27:08,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 644 transitions. [2021-06-13 08:27:08,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:27:08,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 644 transitions. [2021-06-13 08:27:08,705 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 214.66666666666666) internal successors, (644), 3 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:27:08,706 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:27:08,707 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:27:08,707 INFO L185 Difference]: Start difference. First operand has 71 places, 195 transitions, 562 flow. Second operand 3 states and 644 transitions. [2021-06-13 08:27:08,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 189 transitions, 560 flow [2021-06-13 08:27:08,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 189 transitions, 559 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-13 08:27:08,709 INFO L241 Difference]: Finished difference. Result has 72 places, 189 transitions, 545 flow [2021-06-13 08:27:08,710 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=543, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=545, PETRI_PLACES=72, PETRI_TRANSITIONS=189} [2021-06-13 08:27:08,710 INFO L335 CegarLoopForPetriNet]: 93 programPoint places, -21 predicate places. [2021-06-13 08:27:08,710 INFO L482 AbstractCegarLoop]: Abstraction has has 72 places, 189 transitions, 545 flow [2021-06-13 08:27:08,710 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 210.66666666666666) internal successors, (632), 3 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:27:08,710 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:27:08,710 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 08:27:08,710 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-13 08:27:08,710 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-06-13 08:27:08,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:27:08,711 INFO L82 PathProgramCache]: Analyzing trace with hash -2122694859, now seen corresponding path program 1 times [2021-06-13 08:27:08,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:27:08,711 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241751812] [2021-06-13 08:27:08,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:27:08,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:27:08,722 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:27:08,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 08:27:08,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:27:08,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 08:27:08,725 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:27:08,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 08:27:08,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:27:08,726 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:27:08,726 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241751812] [2021-06-13 08:27:08,726 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241751812] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:27:08,726 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:27:08,726 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-13 08:27:08,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29715058] [2021-06-13 08:27:08,727 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-13 08:27:08,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:27:08,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-13 08:27:08,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-13 08:27:08,728 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 224 [2021-06-13 08:27:08,728 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 189 transitions, 545 flow. Second operand has 3 states, 3 states have (on average 210.66666666666666) internal successors, (632), 3 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:27:08,728 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:27:08,728 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 224 [2021-06-13 08:27:08,728 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:27:09,064 INFO L129 PetriNetUnfolder]: 5802/7549 cut-off events. [2021-06-13 08:27:09,064 INFO L130 PetriNetUnfolder]: For 1707/1707 co-relation queries the response was YES. [2021-06-13 08:27:09,077 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7571 conditions, 7549 events. 5802/7549 cut-off events. For 1707/1707 co-relation queries the response was YES. Maximal size of possible extension queue 503. Compared 37155 event pairs, 0 based on Foata normal form. 1706/9255 useless extension candidates. Maximal degree in co-relation 7561. Up to 1980 conditions per place. [2021-06-13 08:27:09,094 INFO L132 encePairwiseOnDemand]: 211/224 looper letters, 1 selfloop transitions, 1 changer transitions 0/165 dead transitions. [2021-06-13 08:27:09,094 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 165 transitions, 477 flow [2021-06-13 08:27:09,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-13 08:27:09,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-13 08:27:09,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 644 transitions. [2021-06-13 08:27:09,096 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9583333333333334 [2021-06-13 08:27:09,096 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 644 transitions. [2021-06-13 08:27:09,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 644 transitions. [2021-06-13 08:27:09,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:27:09,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 644 transitions. [2021-06-13 08:27:09,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 214.66666666666666) internal successors, (644), 3 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:27:09,098 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:27:09,099 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:27:09,099 INFO L185 Difference]: Start difference. First operand has 72 places, 189 transitions, 545 flow. Second operand 3 states and 644 transitions. [2021-06-13 08:27:09,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 165 transitions, 477 flow [2021-06-13 08:27:09,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 165 transitions, 476 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-13 08:27:09,102 INFO L241 Difference]: Finished difference. Result has 73 places, 165 transitions, 474 flow [2021-06-13 08:27:09,102 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=474, PETRI_PLACES=73, PETRI_TRANSITIONS=165} [2021-06-13 08:27:09,102 INFO L335 CegarLoopForPetriNet]: 93 programPoint places, -20 predicate places. [2021-06-13 08:27:09,102 INFO L482 AbstractCegarLoop]: Abstraction has has 73 places, 165 transitions, 474 flow [2021-06-13 08:27:09,102 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 210.66666666666666) internal successors, (632), 3 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:27:09,103 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:27:09,103 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 08:27:09,103 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-13 08:27:09,103 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-06-13 08:27:09,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:27:09,103 INFO L82 PathProgramCache]: Analyzing trace with hash 1594231937, now seen corresponding path program 1 times [2021-06-13 08:27:09,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:27:09,103 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106185199] [2021-06-13 08:27:09,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:27:09,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:27:09,116 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:27:09,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 08:27:09,117 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:27:09,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 08:27:09,119 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:27:09,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 08:27:09,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:27:09,119 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:27:09,119 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106185199] [2021-06-13 08:27:09,119 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106185199] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:27:09,120 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:27:09,120 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-13 08:27:09,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341215459] [2021-06-13 08:27:09,120 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-13 08:27:09,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:27:09,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-13 08:27:09,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-13 08:27:09,121 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 224 [2021-06-13 08:27:09,121 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 165 transitions, 474 flow. Second operand has 3 states, 3 states have (on average 210.66666666666666) internal successors, (632), 3 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:27:09,121 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:27:09,121 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 224 [2021-06-13 08:27:09,121 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:27:09,204 INFO L129 PetriNetUnfolder]: 1866/2620 cut-off events. [2021-06-13 08:27:09,205 INFO L130 PetriNetUnfolder]: For 647/647 co-relation queries the response was YES. [2021-06-13 08:27:09,209 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2709 conditions, 2620 events. 1866/2620 cut-off events. For 647/647 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 11892 event pairs, 0 based on Foata normal form. 580/3200 useless extension candidates. Maximal degree in co-relation 2699. Up to 495 conditions per place. [2021-06-13 08:27:09,215 INFO L132 encePairwiseOnDemand]: 214/224 looper letters, 3 selfloop transitions, 1 changer transitions 0/156 dead transitions. [2021-06-13 08:27:09,215 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 156 transitions, 455 flow [2021-06-13 08:27:09,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-13 08:27:09,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-13 08:27:09,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 643 transitions. [2021-06-13 08:27:09,217 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9568452380952381 [2021-06-13 08:27:09,217 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 643 transitions. [2021-06-13 08:27:09,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 643 transitions. [2021-06-13 08:27:09,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:27:09,218 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 643 transitions. [2021-06-13 08:27:09,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 214.33333333333334) internal successors, (643), 3 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:27:09,219 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:27:09,220 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:27:09,220 INFO L185 Difference]: Start difference. First operand has 73 places, 165 transitions, 474 flow. Second operand 3 states and 643 transitions. [2021-06-13 08:27:09,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 156 transitions, 455 flow [2021-06-13 08:27:09,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 156 transitions, 454 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-13 08:27:09,222 INFO L241 Difference]: Finished difference. Result has 74 places, 156 transitions, 448 flow [2021-06-13 08:27:09,222 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=446, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=448, PETRI_PLACES=74, PETRI_TRANSITIONS=156} [2021-06-13 08:27:09,222 INFO L335 CegarLoopForPetriNet]: 93 programPoint places, -19 predicate places. [2021-06-13 08:27:09,222 INFO L482 AbstractCegarLoop]: Abstraction has has 74 places, 156 transitions, 448 flow [2021-06-13 08:27:09,223 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 210.66666666666666) internal successors, (632), 3 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:27:09,223 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:27:09,223 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 08:27:09,223 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-13 08:27:09,223 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-06-13 08:27:09,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:27:09,223 INFO L82 PathProgramCache]: Analyzing trace with hash 1208779231, now seen corresponding path program 1 times [2021-06-13 08:27:09,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:27:09,224 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109880482] [2021-06-13 08:27:09,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:27:09,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:27:09,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:27:09,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 08:27:09,241 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:27:09,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 08:27:09,243 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:27:09,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 08:27:09,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:27:09,244 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:27:09,244 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109880482] [2021-06-13 08:27:09,244 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109880482] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:27:09,244 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:27:09,244 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-13 08:27:09,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937563284] [2021-06-13 08:27:09,244 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-13 08:27:09,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:27:09,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-13 08:27:09,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-13 08:27:09,245 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 224 [2021-06-13 08:27:09,246 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 156 transitions, 448 flow. Second operand has 3 states, 3 states have (on average 210.66666666666666) internal successors, (632), 3 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:27:09,246 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:27:09,246 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 224 [2021-06-13 08:27:09,246 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:27:09,325 INFO L129 PetriNetUnfolder]: 1725/2451 cut-off events. [2021-06-13 08:27:09,325 INFO L130 PetriNetUnfolder]: For 244/244 co-relation queries the response was YES. [2021-06-13 08:27:09,329 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2696 conditions, 2451 events. 1725/2451 cut-off events. For 244/244 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 11355 event pairs, 0 based on Foata normal form. 22/2473 useless extension candidates. Maximal degree in co-relation 2686. Up to 495 conditions per place. [2021-06-13 08:27:09,334 INFO L132 encePairwiseOnDemand]: 220/224 looper letters, 9 selfloop transitions, 1 changer transitions 0/153 dead transitions. [2021-06-13 08:27:09,334 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 153 transitions, 459 flow [2021-06-13 08:27:09,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-13 08:27:09,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-13 08:27:09,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 643 transitions. [2021-06-13 08:27:09,336 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9568452380952381 [2021-06-13 08:27:09,336 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 643 transitions. [2021-06-13 08:27:09,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 643 transitions. [2021-06-13 08:27:09,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:27:09,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 643 transitions. [2021-06-13 08:27:09,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 214.33333333333334) internal successors, (643), 3 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:27:09,338 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:27:09,339 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:27:09,339 INFO L185 Difference]: Start difference. First operand has 74 places, 156 transitions, 448 flow. Second operand 3 states and 643 transitions. [2021-06-13 08:27:09,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 153 transitions, 459 flow [2021-06-13 08:27:09,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 153 transitions, 458 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-13 08:27:09,341 INFO L241 Difference]: Finished difference. Result has 75 places, 153 transitions, 440 flow [2021-06-13 08:27:09,341 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=438, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=440, PETRI_PLACES=75, PETRI_TRANSITIONS=153} [2021-06-13 08:27:09,341 INFO L335 CegarLoopForPetriNet]: 93 programPoint places, -18 predicate places. [2021-06-13 08:27:09,341 INFO L482 AbstractCegarLoop]: Abstraction has has 75 places, 153 transitions, 440 flow [2021-06-13 08:27:09,341 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 210.66666666666666) internal successors, (632), 3 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:27:09,341 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:27:09,342 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 08:27:09,342 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-13 08:27:09,342 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-06-13 08:27:09,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:27:09,342 INFO L82 PathProgramCache]: Analyzing trace with hash -111828735, now seen corresponding path program 1 times [2021-06-13 08:27:09,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:27:09,342 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455781613] [2021-06-13 08:27:09,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:27:09,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:27:09,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:27:09,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 08:27:09,356 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:27:09,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 08:27:09,358 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:27:09,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 08:27:09,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:27:09,358 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:27:09,358 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455781613] [2021-06-13 08:27:09,358 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455781613] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:27:09,358 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:27:09,359 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-13 08:27:09,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203713588] [2021-06-13 08:27:09,359 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-13 08:27:09,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:27:09,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-13 08:27:09,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-13 08:27:09,360 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 224 [2021-06-13 08:27:09,360 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 153 transitions, 440 flow. Second operand has 3 states, 3 states have (on average 210.66666666666666) internal successors, (632), 3 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:27:09,360 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:27:09,360 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 224 [2021-06-13 08:27:09,360 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:27:09,485 INFO L129 PetriNetUnfolder]: 1500/2170 cut-off events. [2021-06-13 08:27:09,485 INFO L130 PetriNetUnfolder]: For 223/223 co-relation queries the response was YES. [2021-06-13 08:27:09,489 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2381 conditions, 2170 events. 1500/2170 cut-off events. For 223/223 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 10170 event pairs, 0 based on Foata normal form. 36/2206 useless extension candidates. Maximal degree in co-relation 2371. Up to 495 conditions per place. [2021-06-13 08:27:09,495 INFO L132 encePairwiseOnDemand]: 219/224 looper letters, 8 selfloop transitions, 1 changer transitions 0/149 dead transitions. [2021-06-13 08:27:09,495 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 149 transitions, 446 flow [2021-06-13 08:27:09,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-13 08:27:09,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-13 08:27:09,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 643 transitions. [2021-06-13 08:27:09,496 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9568452380952381 [2021-06-13 08:27:09,496 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 643 transitions. [2021-06-13 08:27:09,496 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 643 transitions. [2021-06-13 08:27:09,497 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:27:09,497 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 643 transitions. [2021-06-13 08:27:09,498 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 214.33333333333334) internal successors, (643), 3 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:27:09,498 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:27:09,499 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:27:09,499 INFO L185 Difference]: Start difference. First operand has 75 places, 153 transitions, 440 flow. Second operand 3 states and 643 transitions. [2021-06-13 08:27:09,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 149 transitions, 446 flow [2021-06-13 08:27:09,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 149 transitions, 445 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-13 08:27:09,501 INFO L241 Difference]: Finished difference. Result has 76 places, 149 transitions, 429 flow [2021-06-13 08:27:09,501 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=429, PETRI_PLACES=76, PETRI_TRANSITIONS=149} [2021-06-13 08:27:09,501 INFO L335 CegarLoopForPetriNet]: 93 programPoint places, -17 predicate places. [2021-06-13 08:27:09,501 INFO L482 AbstractCegarLoop]: Abstraction has has 76 places, 149 transitions, 429 flow [2021-06-13 08:27:09,501 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 210.66666666666666) internal successors, (632), 3 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:27:09,501 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:27:09,502 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 08:27:09,502 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-13 08:27:09,502 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-06-13 08:27:09,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:27:09,502 INFO L82 PathProgramCache]: Analyzing trace with hash -1036091335, now seen corresponding path program 1 times [2021-06-13 08:27:09,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:27:09,502 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304899905] [2021-06-13 08:27:09,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:27:09,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:27:09,519 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:27:09,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 08:27:09,520 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:27:09,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 08:27:09,522 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:27:09,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 08:27:09,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:27:09,523 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:27:09,523 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304899905] [2021-06-13 08:27:09,523 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304899905] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:27:09,523 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:27:09,523 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-13 08:27:09,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767358730] [2021-06-13 08:27:09,523 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-13 08:27:09,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:27:09,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-13 08:27:09,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-13 08:27:09,524 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 224 [2021-06-13 08:27:09,525 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 149 transitions, 429 flow. Second operand has 3 states, 3 states have (on average 210.66666666666666) internal successors, (632), 3 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:27:09,525 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:27:09,525 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 224 [2021-06-13 08:27:09,525 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:27:09,566 INFO L129 PetriNetUnfolder]: 509/849 cut-off events. [2021-06-13 08:27:09,566 INFO L130 PetriNetUnfolder]: For 188/188 co-relation queries the response was YES. [2021-06-13 08:27:09,568 INFO L84 FinitePrefix]: Finished finitePrefix Result has 941 conditions, 849 events. 509/849 cut-off events. For 188/188 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3694 event pairs, 0 based on Foata normal form. 121/970 useless extension candidates. Maximal degree in co-relation 931. Up to 165 conditions per place. [2021-06-13 08:27:09,570 INFO L132 encePairwiseOnDemand]: 215/224 looper letters, 4 selfloop transitions, 1 changer transitions 0/141 dead transitions. [2021-06-13 08:27:09,570 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 141 transitions, 415 flow [2021-06-13 08:27:09,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-13 08:27:09,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-13 08:27:09,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 643 transitions. [2021-06-13 08:27:09,571 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9568452380952381 [2021-06-13 08:27:09,572 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 643 transitions. [2021-06-13 08:27:09,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 643 transitions. [2021-06-13 08:27:09,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:27:09,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 643 transitions. [2021-06-13 08:27:09,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 214.33333333333334) internal successors, (643), 3 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:27:09,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:27:09,574 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:27:09,574 INFO L185 Difference]: Start difference. First operand has 76 places, 149 transitions, 429 flow. Second operand 3 states and 643 transitions. [2021-06-13 08:27:09,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 141 transitions, 415 flow [2021-06-13 08:27:09,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 141 transitions, 414 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-13 08:27:09,576 INFO L241 Difference]: Finished difference. Result has 77 places, 141 transitions, 406 flow [2021-06-13 08:27:09,576 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=406, PETRI_PLACES=77, PETRI_TRANSITIONS=141} [2021-06-13 08:27:09,576 INFO L335 CegarLoopForPetriNet]: 93 programPoint places, -16 predicate places. [2021-06-13 08:27:09,576 INFO L482 AbstractCegarLoop]: Abstraction has has 77 places, 141 transitions, 406 flow [2021-06-13 08:27:09,576 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 210.66666666666666) internal successors, (632), 3 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:27:09,576 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:27:09,577 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 08:27:09,577 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-13 08:27:09,577 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-06-13 08:27:09,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:27:09,577 INFO L82 PathProgramCache]: Analyzing trace with hash 1116232505, now seen corresponding path program 1 times [2021-06-13 08:27:09,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:27:09,577 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727086888] [2021-06-13 08:27:09,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:27:09,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:27:09,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:27:09,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 08:27:09,589 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:27:09,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 08:27:09,591 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:27:09,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 08:27:09,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:27:09,592 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:27:09,592 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727086888] [2021-06-13 08:27:09,592 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727086888] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:27:09,592 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:27:09,592 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-13 08:27:09,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645365620] [2021-06-13 08:27:09,593 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-13 08:27:09,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:27:09,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-13 08:27:09,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-13 08:27:09,594 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 224 [2021-06-13 08:27:09,594 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 141 transitions, 406 flow. Second operand has 3 states, 3 states have (on average 210.66666666666666) internal successors, (632), 3 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:27:09,594 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:27:09,594 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 224 [2021-06-13 08:27:09,594 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:27:09,610 INFO L129 PetriNetUnfolder]: 57/166 cut-off events. [2021-06-13 08:27:09,611 INFO L130 PetriNetUnfolder]: For 68/68 co-relation queries the response was YES. [2021-06-13 08:27:09,611 INFO L84 FinitePrefix]: Finished finitePrefix Result has 193 conditions, 166 events. 57/166 cut-off events. For 68/68 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 487 event pairs, 0 based on Foata normal form. 67/233 useless extension candidates. Maximal degree in co-relation 183. Up to 20 conditions per place. [2021-06-13 08:27:09,611 INFO L132 encePairwiseOnDemand]: 212/224 looper letters, 1 selfloop transitions, 1 changer transitions 0/119 dead transitions. [2021-06-13 08:27:09,612 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 119 transitions, 344 flow [2021-06-13 08:27:09,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-13 08:27:09,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-13 08:27:09,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 643 transitions. [2021-06-13 08:27:09,613 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9568452380952381 [2021-06-13 08:27:09,613 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 643 transitions. [2021-06-13 08:27:09,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 643 transitions. [2021-06-13 08:27:09,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:27:09,613 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 643 transitions. [2021-06-13 08:27:09,614 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 214.33333333333334) internal successors, (643), 3 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:27:09,615 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:27:09,615 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:27:09,615 INFO L185 Difference]: Start difference. First operand has 77 places, 141 transitions, 406 flow. Second operand 3 states and 643 transitions. [2021-06-13 08:27:09,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 119 transitions, 344 flow [2021-06-13 08:27:09,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 119 transitions, 343 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-13 08:27:09,617 INFO L241 Difference]: Finished difference. Result has 78 places, 119 transitions, 341 flow [2021-06-13 08:27:09,617 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=339, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=341, PETRI_PLACES=78, PETRI_TRANSITIONS=119} [2021-06-13 08:27:09,617 INFO L335 CegarLoopForPetriNet]: 93 programPoint places, -15 predicate places. [2021-06-13 08:27:09,617 INFO L482 AbstractCegarLoop]: Abstraction has has 78 places, 119 transitions, 341 flow [2021-06-13 08:27:09,618 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 210.66666666666666) internal successors, (632), 3 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:27:09,618 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:27:09,618 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 08:27:09,618 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-13 08:27:09,618 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-06-13 08:27:09,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:27:09,619 INFO L82 PathProgramCache]: Analyzing trace with hash -1175473407, now seen corresponding path program 1 times [2021-06-13 08:27:09,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:27:09,619 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733971837] [2021-06-13 08:27:09,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:27:09,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:27:09,630 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:27:09,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 08:27:09,631 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:27:09,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 08:27:09,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:27:09,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 08:27:09,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:27:09,634 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:27:09,634 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733971837] [2021-06-13 08:27:09,634 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733971837] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:27:09,634 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:27:09,634 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-13 08:27:09,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221908907] [2021-06-13 08:27:09,635 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-13 08:27:09,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:27:09,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-13 08:27:09,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-13 08:27:09,636 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 224 [2021-06-13 08:27:09,636 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 119 transitions, 341 flow. Second operand has 3 states, 3 states have (on average 210.66666666666666) internal successors, (632), 3 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:27:09,636 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:27:09,636 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 224 [2021-06-13 08:27:09,636 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:27:09,648 INFO L129 PetriNetUnfolder]: 1/55 cut-off events. [2021-06-13 08:27:09,648 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2021-06-13 08:27:09,648 INFO L84 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 55 events. 1/55 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 93 event pairs, 0 based on Foata normal form. 11/66 useless extension candidates. Maximal degree in co-relation 73. Up to 2 conditions per place. [2021-06-13 08:27:09,648 INFO L132 encePairwiseOnDemand]: 213/224 looper letters, 1 selfloop transitions, 1 changer transitions 0/55 dead transitions. [2021-06-13 08:27:09,648 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 55 transitions, 153 flow [2021-06-13 08:27:09,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-13 08:27:09,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-13 08:27:09,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 642 transitions. [2021-06-13 08:27:09,650 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9553571428571429 [2021-06-13 08:27:09,650 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 642 transitions. [2021-06-13 08:27:09,650 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 642 transitions. [2021-06-13 08:27:09,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:27:09,650 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 642 transitions. [2021-06-13 08:27:09,651 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 214.0) internal successors, (642), 3 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:27:09,652 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:27:09,652 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:27:09,652 INFO L185 Difference]: Start difference. First operand has 78 places, 119 transitions, 341 flow. Second operand 3 states and 642 transitions. [2021-06-13 08:27:09,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 55 transitions, 153 flow [2021-06-13 08:27:09,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 55 transitions, 152 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-13 08:27:09,653 INFO L241 Difference]: Finished difference. Result has 79 places, 55 transitions, 150 flow [2021-06-13 08:27:09,653 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=79, PETRI_TRANSITIONS=55} [2021-06-13 08:27:09,653 INFO L335 CegarLoopForPetriNet]: 93 programPoint places, -14 predicate places. [2021-06-13 08:27:09,654 INFO L482 AbstractCegarLoop]: Abstraction has has 79 places, 55 transitions, 150 flow [2021-06-13 08:27:09,654 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 210.66666666666666) internal successors, (632), 3 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:27:09,654 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:27:09,654 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 08:27:09,654 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-06-13 08:27:09,654 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-06-13 08:27:09,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:27:09,655 INFO L82 PathProgramCache]: Analyzing trace with hash 1558488377, now seen corresponding path program 1 times [2021-06-13 08:27:09,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:27:09,655 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394301083] [2021-06-13 08:27:09,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:27:09,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:27:09,740 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:27:09,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 08:27:09,745 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:27:09,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:27:09,756 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-13 08:27:09,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-13 08:27:09,769 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-13 08:27:09,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 08:27:09,807 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-13 08:27:09,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-13 08:27:09,858 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-06-13 08:27:09,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-13 08:27:09,910 INFO L142 QuantifierPusher]: treesize reduction 18, result has 72.3 percent of original size [2021-06-13 08:27:09,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-06-13 08:27:09,950 INFO L142 QuantifierPusher]: treesize reduction 27, result has 67.1 percent of original size [2021-06-13 08:27:09,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-06-13 08:27:09,999 INFO L142 QuantifierPusher]: treesize reduction 36, result has 63.6 percent of original size [2021-06-13 08:27:09,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-06-13 08:27:10,057 INFO L142 QuantifierPusher]: treesize reduction 45, result has 61.2 percent of original size [2021-06-13 08:27:10,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-06-13 08:27:10,134 INFO L142 QuantifierPusher]: treesize reduction 63, result has 56.3 percent of original size [2021-06-13 08:27:10,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-06-13 08:27:10,236 INFO L142 QuantifierPusher]: treesize reduction 72, result has 55.3 percent of original size [2021-06-13 08:27:10,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-06-13 08:27:10,348 INFO L142 QuantifierPusher]: treesize reduction 90, result has 50.8 percent of original size [2021-06-13 08:27:10,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 93 [2021-06-13 08:27:10,422 INFO L142 QuantifierPusher]: treesize reduction 108, result has 47.3 percent of original size [2021-06-13 08:27:10,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-06-13 08:27:10,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:27:10,483 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:27:10,483 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394301083] [2021-06-13 08:27:10,483 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394301083] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:27:10,483 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:27:10,483 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-06-13 08:27:10,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397094732] [2021-06-13 08:27:10,484 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-13 08:27:10,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:27:10,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-13 08:27:10,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2021-06-13 08:27:10,486 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 224 [2021-06-13 08:27:10,488 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 55 transitions, 150 flow. Second operand has 15 states, 15 states have (on average 209.93333333333334) internal successors, (3149), 15 states have internal predecessors, (3149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:27:10,488 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:27:10,488 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 224 [2021-06-13 08:27:10,488 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:27:15,536 INFO L129 PetriNetUnfolder]: 61582/86964 cut-off events. [2021-06-13 08:27:15,536 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 08:27:15,974 INFO L84 FinitePrefix]: Finished finitePrefix Result has 160732 conditions, 86964 events. 61582/86964 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5308. Compared 643421 event pairs, 20481 based on Foata normal form. 1/85970 useless extension candidates. Maximal degree in co-relation 160722. Up to 26625 conditions per place. [2021-06-13 08:27:16,266 INFO L132 encePairwiseOnDemand]: 210/224 looper letters, 90 selfloop transitions, 13 changer transitions 0/144 dead transitions. [2021-06-13 08:27:16,266 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 144 transitions, 534 flow [2021-06-13 08:27:16,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-13 08:27:16,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-06-13 08:27:16,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3239 transitions. [2021-06-13 08:27:16,270 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9639880952380953 [2021-06-13 08:27:16,270 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3239 transitions. [2021-06-13 08:27:16,270 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3239 transitions. [2021-06-13 08:27:16,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:27:16,271 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3239 transitions. [2021-06-13 08:27:16,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 215.93333333333334) internal successors, (3239), 15 states have internal predecessors, (3239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:27:16,278 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 224.0) internal successors, (3584), 16 states have internal predecessors, (3584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:27:16,278 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 224.0) internal successors, (3584), 16 states have internal predecessors, (3584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:27:16,278 INFO L185 Difference]: Start difference. First operand has 79 places, 55 transitions, 150 flow. Second operand 15 states and 3239 transitions. [2021-06-13 08:27:16,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 144 transitions, 534 flow [2021-06-13 08:27:16,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 144 transitions, 533 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-13 08:27:16,281 INFO L241 Difference]: Finished difference. Result has 105 places, 67 transitions, 250 flow [2021-06-13 08:27:16,281 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=250, PETRI_PLACES=105, PETRI_TRANSITIONS=67} [2021-06-13 08:27:16,281 INFO L335 CegarLoopForPetriNet]: 93 programPoint places, 12 predicate places. [2021-06-13 08:27:16,282 INFO L482 AbstractCegarLoop]: Abstraction has has 105 places, 67 transitions, 250 flow [2021-06-13 08:27:16,282 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 209.93333333333334) internal successors, (3149), 15 states have internal predecessors, (3149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:27:16,283 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:27:16,283 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 08:27:16,283 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-06-13 08:27:16,283 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-06-13 08:27:16,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:27:16,283 INFO L82 PathProgramCache]: Analyzing trace with hash -726635903, now seen corresponding path program 2 times [2021-06-13 08:27:16,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:27:16,283 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293676555] [2021-06-13 08:27:16,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:27:16,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:27:16,359 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:27:16,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 08:27:16,362 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:27:16,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:27:16,366 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:27:16,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:27:16,377 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-13 08:27:16,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 08:27:16,388 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-13 08:27:16,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-13 08:27:16,404 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-13 08:27:16,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-13 08:27:16,494 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-13 08:27:16,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-13 08:27:16,522 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-06-13 08:27:16,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-06-13 08:27:16,556 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-06-13 08:27:16,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-06-13 08:27:16,605 INFO L142 QuantifierPusher]: treesize reduction 63, result has 52.3 percent of original size [2021-06-13 08:27:16,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-06-13 08:27:16,655 INFO L142 QuantifierPusher]: treesize reduction 72, result has 51.7 percent of original size [2021-06-13 08:27:16,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-06-13 08:27:16,711 INFO L142 QuantifierPusher]: treesize reduction 81, result has 51.2 percent of original size [2021-06-13 08:27:16,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-06-13 08:27:16,773 INFO L142 QuantifierPusher]: treesize reduction 99, result has 49.0 percent of original size [2021-06-13 08:27:16,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-06-13 08:27:16,852 INFO L142 QuantifierPusher]: treesize reduction 108, result has 47.3 percent of original size [2021-06-13 08:27:16,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-06-13 08:27:16,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:27:16,916 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:27:16,917 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293676555] [2021-06-13 08:27:16,917 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293676555] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:27:16,917 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:27:16,917 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-06-13 08:27:16,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646892163] [2021-06-13 08:27:16,919 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-13 08:27:16,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:27:16,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-13 08:27:16,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2021-06-13 08:27:16,924 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 224 [2021-06-13 08:27:16,926 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 67 transitions, 250 flow. Second operand has 15 states, 15 states have (on average 209.93333333333334) internal successors, (3149), 15 states have internal predecessors, (3149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:27:16,926 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:27:16,926 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 224 [2021-06-13 08:27:16,926 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:27:30,421 INFO L129 PetriNetUnfolder]: 94179/153906 cut-off events. [2021-06-13 08:27:30,421 INFO L130 PetriNetUnfolder]: For 125150/125150 co-relation queries the response was YES. [2021-06-13 08:27:31,906 INFO L84 FinitePrefix]: Finished finitePrefix Result has 380839 conditions, 153906 events. 94179/153906 cut-off events. For 125150/125150 co-relation queries the response was YES. Maximal size of possible extension queue 9658. Compared 1545695 event pairs, 20481 based on Foata normal form. 1/152871 useless extension candidates. Maximal degree in co-relation 380816. Up to 44806 conditions per place. [2021-06-13 08:27:32,604 INFO L132 encePairwiseOnDemand]: 210/224 looper letters, 119 selfloop transitions, 19 changer transitions 0/179 dead transitions. [2021-06-13 08:27:32,605 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 179 transitions, 1032 flow [2021-06-13 08:27:32,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-13 08:27:32,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-06-13 08:27:32,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3239 transitions. [2021-06-13 08:27:32,609 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9639880952380953 [2021-06-13 08:27:32,609 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3239 transitions. [2021-06-13 08:27:32,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3239 transitions. [2021-06-13 08:27:32,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:27:32,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3239 transitions. [2021-06-13 08:27:32,614 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 215.93333333333334) internal successors, (3239), 15 states have internal predecessors, (3239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:27:32,616 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 224.0) internal successors, (3584), 16 states have internal predecessors, (3584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:27:32,617 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 224.0) internal successors, (3584), 16 states have internal predecessors, (3584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:27:32,617 INFO L185 Difference]: Start difference. First operand has 105 places, 67 transitions, 250 flow. Second operand 15 states and 3239 transitions. [2021-06-13 08:27:32,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 179 transitions, 1032 flow [2021-06-13 08:27:32,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 179 transitions, 1019 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-13 08:27:32,691 INFO L241 Difference]: Finished difference. Result has 131 places, 83 transitions, 429 flow [2021-06-13 08:27:32,691 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=429, PETRI_PLACES=131, PETRI_TRANSITIONS=83} [2021-06-13 08:27:32,691 INFO L335 CegarLoopForPetriNet]: 93 programPoint places, 38 predicate places. [2021-06-13 08:27:32,691 INFO L482 AbstractCegarLoop]: Abstraction has has 131 places, 83 transitions, 429 flow [2021-06-13 08:27:32,692 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 209.93333333333334) internal successors, (3149), 15 states have internal predecessors, (3149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:27:32,692 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:27:32,692 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 08:27:32,692 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-06-13 08:27:32,693 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-06-13 08:27:32,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:27:32,693 INFO L82 PathProgramCache]: Analyzing trace with hash 2011838631, now seen corresponding path program 3 times [2021-06-13 08:27:32,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:27:32,693 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323877771] [2021-06-13 08:27:32,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:27:32,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:27:32,771 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:27:32,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 08:27:32,772 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:27:32,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:27:32,776 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:27:32,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:27:32,784 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-13 08:27:32,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 08:27:32,793 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-13 08:27:32,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-13 08:27:32,807 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-13 08:27:32,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-13 08:27:32,831 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-13 08:27:32,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-13 08:27:32,854 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-06-13 08:27:32,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-06-13 08:27:32,882 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-06-13 08:27:32,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-06-13 08:27:32,916 INFO L142 QuantifierPusher]: treesize reduction 63, result has 52.3 percent of original size [2021-06-13 08:27:32,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-06-13 08:27:32,966 INFO L142 QuantifierPusher]: treesize reduction 72, result has 51.7 percent of original size [2021-06-13 08:27:32,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-06-13 08:27:33,018 INFO L142 QuantifierPusher]: treesize reduction 90, result has 49.2 percent of original size [2021-06-13 08:27:33,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-06-13 08:27:33,079 INFO L142 QuantifierPusher]: treesize reduction 99, result has 49.0 percent of original size [2021-06-13 08:27:33,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-06-13 08:27:33,157 INFO L142 QuantifierPusher]: treesize reduction 108, result has 47.3 percent of original size [2021-06-13 08:27:33,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-06-13 08:27:33,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:27:33,232 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:27:33,232 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323877771] [2021-06-13 08:27:33,232 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323877771] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:27:33,232 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:27:33,232 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-06-13 08:27:33,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912256758] [2021-06-13 08:27:33,233 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-13 08:27:33,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:27:33,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-13 08:27:33,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2021-06-13 08:27:33,236 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 224 [2021-06-13 08:27:33,238 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 83 transitions, 429 flow. Second operand has 15 states, 15 states have (on average 209.93333333333334) internal successors, (3149), 15 states have internal predecessors, (3149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:27:33,238 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:27:33,238 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 224 [2021-06-13 08:27:33,238 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:28:01,125 INFO L129 PetriNetUnfolder]: 129640/218129 cut-off events. [2021-06-13 08:28:01,126 INFO L130 PetriNetUnfolder]: For 516217/518547 co-relation queries the response was YES. [2021-06-13 08:28:03,732 INFO L84 FinitePrefix]: Finished finitePrefix Result has 700878 conditions, 218129 events. 129640/218129 cut-off events. For 516217/518547 co-relation queries the response was YES. Maximal size of possible extension queue 15406. Compared 2401428 event pairs, 39954 based on Foata normal form. 1/216963 useless extension candidates. Maximal degree in co-relation 700842. Up to 57315 conditions per place. [2021-06-13 08:28:04,838 INFO L132 encePairwiseOnDemand]: 210/224 looper letters, 172 selfloop transitions, 35 changer transitions 0/248 dead transitions. [2021-06-13 08:28:04,838 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 248 transitions, 2005 flow [2021-06-13 08:28:04,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-13 08:28:04,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-06-13 08:28:04,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3239 transitions. [2021-06-13 08:28:04,843 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9639880952380953 [2021-06-13 08:28:04,843 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3239 transitions. [2021-06-13 08:28:04,843 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3239 transitions. [2021-06-13 08:28:04,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:28:04,844 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3239 transitions. [2021-06-13 08:28:04,847 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 215.93333333333334) internal successors, (3239), 15 states have internal predecessors, (3239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:28:04,850 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 224.0) internal successors, (3584), 16 states have internal predecessors, (3584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:28:04,850 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 224.0) internal successors, (3584), 16 states have internal predecessors, (3584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:28:04,850 INFO L185 Difference]: Start difference. First operand has 131 places, 83 transitions, 429 flow. Second operand 15 states and 3239 transitions. [2021-06-13 08:28:04,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 248 transitions, 2005 flow [2021-06-13 08:28:14,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 248 transitions, 1949 flow, removed 16 selfloop flow, removed 1 redundant places. [2021-06-13 08:28:14,187 INFO L241 Difference]: Finished difference. Result has 157 places, 115 transitions, 850 flow [2021-06-13 08:28:14,187 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=415, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=850, PETRI_PLACES=157, PETRI_TRANSITIONS=115} [2021-06-13 08:28:14,187 INFO L335 CegarLoopForPetriNet]: 93 programPoint places, 64 predicate places. [2021-06-13 08:28:14,188 INFO L482 AbstractCegarLoop]: Abstraction has has 157 places, 115 transitions, 850 flow [2021-06-13 08:28:14,188 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 209.93333333333334) internal successors, (3149), 15 states have internal predecessors, (3149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:28:14,188 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:28:14,188 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 08:28:14,188 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-06-13 08:28:14,188 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-06-13 08:28:14,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:28:14,189 INFO L82 PathProgramCache]: Analyzing trace with hash 1488080075, now seen corresponding path program 4 times [2021-06-13 08:28:14,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:28:14,189 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435761041] [2021-06-13 08:28:14,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:28:14,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:28:14,233 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:28:14,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 08:28:14,234 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:28:14,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:28:14,237 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:28:14,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:28:14,243 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-13 08:28:14,244 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 08:28:14,253 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-13 08:28:14,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-13 08:28:14,266 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-13 08:28:14,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-13 08:28:14,284 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-13 08:28:14,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-13 08:28:14,306 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-06-13 08:28:14,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-06-13 08:28:14,342 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-06-13 08:28:14,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-06-13 08:28:14,380 INFO L142 QuantifierPusher]: treesize reduction 63, result has 52.3 percent of original size [2021-06-13 08:28:14,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-06-13 08:28:14,426 INFO L142 QuantifierPusher]: treesize reduction 81, result has 49.4 percent of original size [2021-06-13 08:28:14,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-06-13 08:28:14,494 INFO L142 QuantifierPusher]: treesize reduction 81, result has 51.2 percent of original size [2021-06-13 08:28:14,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-06-13 08:28:14,552 INFO L142 QuantifierPusher]: treesize reduction 90, result has 50.8 percent of original size [2021-06-13 08:28:14,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 93 [2021-06-13 08:28:14,616 INFO L142 QuantifierPusher]: treesize reduction 108, result has 47.3 percent of original size [2021-06-13 08:28:14,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-06-13 08:28:14,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:28:14,670 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:28:14,670 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435761041] [2021-06-13 08:28:14,670 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435761041] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:28:14,670 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:28:14,670 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-06-13 08:28:14,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000218515] [2021-06-13 08:28:14,671 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-13 08:28:14,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:28:14,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-13 08:28:14,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2021-06-13 08:28:14,673 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 224 [2021-06-13 08:28:14,674 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 115 transitions, 850 flow. Second operand has 15 states, 15 states have (on average 209.93333333333334) internal successors, (3149), 15 states have internal predecessors, (3149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:28:14,674 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:28:14,674 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 224 [2021-06-13 08:28:14,674 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:28:58,203 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 50