/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/mcr/example_16.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-0e22065b97d0a1f8b3904e080cebe0f05e88d2b7-0e22065 [2021-06-11 09:36:48,470 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-11 09:36:48,471 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-11 09:36:48,503 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-11 09:36:48,503 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-11 09:36:48,504 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-11 09:36:48,505 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-11 09:36:48,507 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-11 09:36:48,508 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-11 09:36:48,509 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-11 09:36:48,510 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-11 09:36:48,510 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-11 09:36:48,511 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-11 09:36:48,511 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-11 09:36:48,512 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-11 09:36:48,513 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-11 09:36:48,513 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-11 09:36:48,514 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-11 09:36:48,515 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-11 09:36:48,516 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-11 09:36:48,518 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-11 09:36:48,524 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-11 09:36:48,525 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-11 09:36:48,525 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-11 09:36:48,527 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-06-11 09:36:48,527 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-11 09:36:48,527 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-11 09:36:48,528 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-11 09:36:48,533 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-11 09:36:48,533 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-06-11 09:36:48,534 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-11 09:36:48,534 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-11 09:36:48,535 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-11 09:36:48,535 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-11 09:36:48,536 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-11 09:36:48,536 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-11 09:36:48,537 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-11 09:36:48,537 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-11 09:36:48,537 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-11 09:36:48,538 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-11 09:36:48,538 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-11 09:36:48,542 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-RepeatedSemanticLbe.epf [2021-06-11 09:36:48,563 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-11 09:36:48,564 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-11 09:36:48,566 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-11 09:36:48,566 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-11 09:36:48,566 INFO L138 SettingsManager]: * Use SBE=true [2021-06-11 09:36:48,566 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-11 09:36:48,566 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-11 09:36:48,567 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-11 09:36:48,567 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-11 09:36:48,567 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-11 09:36:48,567 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-11 09:36:48,567 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-11 09:36:48,568 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-11 09:36:48,568 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-11 09:36:48,568 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-11 09:36:48,568 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-11 09:36:48,568 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-11 09:36:48,568 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-11 09:36:48,568 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-11 09:36:48,568 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-11 09:36:48,568 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-11 09:36:48,569 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-11 09:36:48,569 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-11 09:36:48,569 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-11 09:36:48,569 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-11 09:36:48,569 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-11 09:36:48,569 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-11 09:36:48,569 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-11 09:36:48,569 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-06-11 09:36:48,569 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-11 09:36:48,830 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-11 09:36:48,843 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-11 09:36:48,845 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-11 09:36:48,846 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-11 09:36:48,846 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-11 09:36:48,847 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_16.bpl [2021-06-11 09:36:48,847 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_16.bpl' [2021-06-11 09:36:48,884 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-11 09:36:48,885 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-11 09:36:48,886 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-11 09:36:48,887 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-11 09:36:48,887 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-11 09:36:48,895 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 09:36:48" (1/1) ... [2021-06-11 09:36:48,901 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 09:36:48" (1/1) ... [2021-06-11 09:36:48,906 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-11 09:36:48,908 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-11 09:36:48,908 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-11 09:36:48,908 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-11 09:36:48,914 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 09:36:48" (1/1) ... [2021-06-11 09:36:48,914 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 09:36:48" (1/1) ... [2021-06-11 09:36:48,916 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 09:36:48" (1/1) ... [2021-06-11 09:36:48,916 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 09:36:48" (1/1) ... [2021-06-11 09:36:48,919 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 09:36:48" (1/1) ... [2021-06-11 09:36:48,920 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 09:36:48" (1/1) ... [2021-06-11 09:36:48,921 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 09:36:48" (1/1) ... [2021-06-11 09:36:48,925 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-11 09:36:48,927 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-11 09:36:48,927 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-11 09:36:48,928 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-11 09:36:48,929 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 09:36:48" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-11 09:36:49,012 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_14 given in one single declaration [2021-06-11 09:36:49,012 INFO L130 BoogieDeclarations]: Found specification of procedure set_14 [2021-06-11 09:36:49,013 INFO L138 BoogieDeclarations]: Found implementation of procedure set_14 [2021-06-11 09:36:49,014 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_15 given in one single declaration [2021-06-11 09:36:49,014 INFO L130 BoogieDeclarations]: Found specification of procedure set_15 [2021-06-11 09:36:49,014 INFO L138 BoogieDeclarations]: Found implementation of procedure set_15 [2021-06-11 09:36:49,014 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2021-06-11 09:36:49,014 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2021-06-11 09:36:49,014 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2021-06-11 09:36:49,014 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2021-06-11 09:36:49,015 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2021-06-11 09:36:49,015 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2021-06-11 09:36:49,015 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2021-06-11 09:36:49,015 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2021-06-11 09:36:49,015 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2021-06-11 09:36:49,015 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2021-06-11 09:36:49,015 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2021-06-11 09:36:49,015 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2021-06-11 09:36:49,016 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2021-06-11 09:36:49,016 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2021-06-11 09:36:49,016 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2021-06-11 09:36:49,017 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_9 given in one single declaration [2021-06-11 09:36:49,017 INFO L130 BoogieDeclarations]: Found specification of procedure set_9 [2021-06-11 09:36:49,017 INFO L138 BoogieDeclarations]: Found implementation of procedure set_9 [2021-06-11 09:36:49,017 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-11 09:36:49,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-11 09:36:49,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-11 09:36:49,018 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_12 given in one single declaration [2021-06-11 09:36:49,019 INFO L130 BoogieDeclarations]: Found specification of procedure set_12 [2021-06-11 09:36:49,019 INFO L138 BoogieDeclarations]: Found implementation of procedure set_12 [2021-06-11 09:36:49,019 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_5 given in one single declaration [2021-06-11 09:36:49,019 INFO L130 BoogieDeclarations]: Found specification of procedure set_5 [2021-06-11 09:36:49,019 INFO L138 BoogieDeclarations]: Found implementation of procedure set_5 [2021-06-11 09:36:49,019 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_13 given in one single declaration [2021-06-11 09:36:49,019 INFO L130 BoogieDeclarations]: Found specification of procedure set_13 [2021-06-11 09:36:49,019 INFO L138 BoogieDeclarations]: Found implementation of procedure set_13 [2021-06-11 09:36:49,020 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_6 given in one single declaration [2021-06-11 09:36:49,020 INFO L130 BoogieDeclarations]: Found specification of procedure set_6 [2021-06-11 09:36:49,023 INFO L138 BoogieDeclarations]: Found implementation of procedure set_6 [2021-06-11 09:36:49,023 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_10 given in one single declaration [2021-06-11 09:36:49,023 INFO L130 BoogieDeclarations]: Found specification of procedure set_10 [2021-06-11 09:36:49,024 INFO L138 BoogieDeclarations]: Found implementation of procedure set_10 [2021-06-11 09:36:49,024 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_7 given in one single declaration [2021-06-11 09:36:49,024 INFO L130 BoogieDeclarations]: Found specification of procedure set_7 [2021-06-11 09:36:49,024 INFO L138 BoogieDeclarations]: Found implementation of procedure set_7 [2021-06-11 09:36:49,024 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_11 given in one single declaration [2021-06-11 09:36:49,024 INFO L130 BoogieDeclarations]: Found specification of procedure set_11 [2021-06-11 09:36:49,024 INFO L138 BoogieDeclarations]: Found implementation of procedure set_11 [2021-06-11 09:36:49,025 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_8 given in one single declaration [2021-06-11 09:36:49,025 INFO L130 BoogieDeclarations]: Found specification of procedure set_8 [2021-06-11 09:36:49,025 INFO L138 BoogieDeclarations]: Found implementation of procedure set_8 [2021-06-11 09:36:49,025 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-11 09:36:49,198 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-11 09:36:49,198 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-11 09:36:49,199 INFO L202 PluginConnector]: Adding new model example_16.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.06 09:36:49 BoogieIcfgContainer [2021-06-11 09:36:49,199 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-11 09:36:49,200 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-11 09:36:49,200 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-11 09:36:49,202 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-11 09:36:49,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 09:36:48" (1/2) ... [2021-06-11 09:36:49,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ba3e4d8 and model type example_16.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.06 09:36:49, skipping insertion in model container [2021-06-11 09:36:49,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_16.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.06 09:36:49" (2/2) ... [2021-06-11 09:36:49,204 INFO L111 eAbstractionObserver]: Analyzing ICFG example_16.bpl [2021-06-11 09:36:49,207 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-11 09:36:49,210 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-06-11 09:36:49,210 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-11 09:36:49,458 INFO L149 ThreadInstanceAdder]: Constructed 256 joinOtherThreadTransitions. [2021-06-11 09:36:49,471 INFO L253 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2021-06-11 09:36:49,485 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:36:49,485 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:36:49,485 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:36:49,485 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:36:49,485 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:36:49,485 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:36:49,485 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:36:49,485 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:36:49,497 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 132 places, 323 transitions, 1494 flow [2021-06-11 09:37:27,567 INFO L129 PetriNetUnfolder]: 458753/524339 cut-off events. [2021-06-11 09:37:27,568 INFO L130 PetriNetUnfolder]: For 524288/524288 co-relation queries the response was YES. [2021-06-11 09:37:31,475 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1048676 conditions, 524339 events. 458753/524339 cut-off events. For 524288/524288 co-relation queries the response was YES. Maximal size of possible extension queue 13495. Compared 2150347 event pairs, 0 based on Foata normal form. 0/524338 useless extension candidates. Maximal degree in co-relation 491597. Up to 102960 conditions per place. [2021-06-11 09:37:31,476 INFO L82 GeneralOperation]: Start removeDead. Operand has 132 places, 323 transitions, 1494 flow [2021-06-11 09:37:34,332 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 114 places, 305 transitions, 1426 flow [2021-06-11 09:37:34,334 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:37:34,343 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 114 places, 305 transitions, 1426 flow [2021-06-11 09:37:34,345 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 114 places, 305 transitions, 1426 flow [2021-06-11 09:37:34,349 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 114 places, 305 transitions, 1426 flow [2021-06-11 09:38:14,936 INFO L129 PetriNetUnfolder]: 458753/524337 cut-off events. [2021-06-11 09:38:14,937 INFO L130 PetriNetUnfolder]: For 524288/524288 co-relation queries the response was YES. [2021-06-11 09:38:18,832 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1048674 conditions, 524337 events. 458753/524337 cut-off events. For 524288/524288 co-relation queries the response was YES. Maximal size of possible extension queue 13495. Compared 2255750 event pairs, 0 based on Foata normal form. 0/524337 useless extension candidates. Maximal degree in co-relation 491597. Up to 102960 conditions per place. [2021-06-11 09:38:30,521 INFO L151 LiptonReduction]: Number of co-enabled transitions 15840 [2021-06-11 09:38:30,777 INFO L163 LiptonReduction]: Checked pairs total: 4200 [2021-06-11 09:38:30,777 INFO L165 LiptonReduction]: Total number of compositions: 16 [2021-06-11 09:38:30,780 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 56447 [2021-06-11 09:39:05,697 INFO L129 PetriNetUnfolder]: 458753/524320 cut-off events. [2021-06-11 09:39:05,697 INFO L130 PetriNetUnfolder]: For 524288/524288 co-relation queries the response was YES. [2021-06-11 09:39:05,697 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:39:05,698 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 09:39:05,698 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr14INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr15INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-06-11 09:39:05,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:39:05,702 INFO L82 PathProgramCache]: Analyzing trace with hash 1566408029, now seen corresponding path program 1 times [2021-06-11 09:39:05,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:39:05,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631851847] [2021-06-11 09:39:05,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:39:05,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:39:05,791 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:39:05,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:39:05,802 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:39:05,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:39:05,806 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:39:05,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:39:05,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:39:05,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631851847] [2021-06-11 09:39:05,809 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:39:05,809 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 09:39:05,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949630281] [2021-06-11 09:39:05,821 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:39:05,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:39:05,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:39:05,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:39:05,834 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 339 [2021-06-11 09:39:05,838 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 289 transitions, 1394 flow. Second operand has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:39:05,838 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:39:05,838 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 339 [2021-06-11 09:39:05,839 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:39:22,701 INFO L129 PetriNetUnfolder]: 235058/272802 cut-off events. [2021-06-11 09:39:22,701 INFO L130 PetriNetUnfolder]: For 366130/366130 co-relation queries the response was YES. [2021-06-11 09:39:24,377 INFO L84 FinitePrefix]: Finished finitePrefix Result has 550566 conditions, 272802 events. 235058/272802 cut-off events. For 366130/366130 co-relation queries the response was YES. Maximal size of possible extension queue 7060. Compared 1345521 event pairs, 0 based on Foata normal form. 27824/300626 useless extension candidates. Maximal degree in co-relation 491551. Up to 51480 conditions per place. [2021-06-11 09:39:25,622 INFO L132 encePairwiseOnDemand]: 328/339 looper letters, 6 selfloop transitions, 1 changer transitions 0/279 dead transitions. [2021-06-11 09:39:25,622 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 279 transitions, 1358 flow [2021-06-11 09:39:25,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:39:25,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:39:25,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 983 transitions. [2021-06-11 09:39:25,634 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9665683382497542 [2021-06-11 09:39:25,634 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 983 transitions. [2021-06-11 09:39:25,634 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 983 transitions. [2021-06-11 09:39:25,636 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:39:25,638 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 983 transitions. [2021-06-11 09:39:25,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 327.6666666666667) internal successors, (983), 3 states have internal predecessors, (983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:39:25,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:39:25,647 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:39:25,648 INFO L185 Difference]: Start difference. First operand has 98 places, 289 transitions, 1394 flow. Second operand 3 states and 983 transitions. [2021-06-11 09:39:25,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 279 transitions, 1358 flow [2021-06-11 09:39:42,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 279 transitions, 834 flow, removed 0 selfloop flow, removed 32 redundant places. [2021-06-11 09:39:42,078 INFO L241 Difference]: Finished difference. Result has 68 places, 279 transitions, 822 flow [2021-06-11 09:39:42,079 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=820, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=822, PETRI_PLACES=68, PETRI_TRANSITIONS=279} [2021-06-11 09:39:42,080 INFO L343 CegarLoopForPetriNet]: 98 programPoint places, -30 predicate places. [2021-06-11 09:39:42,080 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:39:42,080 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 68 places, 279 transitions, 822 flow [2021-06-11 09:39:42,080 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 68 places, 279 transitions, 822 flow [2021-06-11 09:39:42,081 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 68 places, 279 transitions, 822 flow [2021-06-11 09:39:52,331 INFO L129 PetriNetUnfolder]: 235058/272802 cut-off events. [2021-06-11 09:39:52,332 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:39:53,068 INFO L84 FinitePrefix]: Finished finitePrefix Result has 272821 conditions, 272802 events. 235058/272802 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7060. Compared 1171136 event pairs, 0 based on Foata normal form. 0/272802 useless extension candidates. Maximal degree in co-relation 272796. Up to 51480 conditions per place. [2021-06-11 09:39:55,863 INFO L151 LiptonReduction]: Number of co-enabled transitions 7380 [2021-06-11 09:39:55,891 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:39:55,891 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:39:55,891 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 13811 [2021-06-11 09:39:55,892 INFO L480 AbstractCegarLoop]: Abstraction has has 68 places, 279 transitions, 822 flow [2021-06-11 09:39:55,892 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:39:55,892 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:39:55,892 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 09:39:55,893 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-11 09:39:55,893 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr14INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr15INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-06-11 09:39:55,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:39:55,893 INFO L82 PathProgramCache]: Analyzing trace with hash -294847935, now seen corresponding path program 1 times [2021-06-11 09:39:55,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:39:55,893 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150490101] [2021-06-11 09:39:55,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:39:55,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:39:55,913 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:39:55,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:39:55,914 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:39:55,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:39:55,916 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:39:55,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:39:55,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:39:55,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150490101] [2021-06-11 09:39:55,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:39:55,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 09:39:55,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223148714] [2021-06-11 09:39:55,918 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:39:55,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:39:55,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:39:55,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:39:55,920 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 339 [2021-06-11 09:39:55,920 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 279 transitions, 822 flow. Second operand has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:39:55,920 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:39:55,920 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 339 [2021-06-11 09:39:55,921 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:40:02,039 INFO L129 PetriNetUnfolder]: 135672/160505 cut-off events. [2021-06-11 09:40:02,039 INFO L130 PetriNetUnfolder]: For 17855/17855 co-relation queries the response was YES. [2021-06-11 09:40:02,526 INFO L84 FinitePrefix]: Finished finitePrefix Result has 165470 conditions, 160505 events. 135672/160505 cut-off events. For 17855/17855 co-relation queries the response was YES. Maximal size of possible extension queue 4390. Compared 799649 event pairs, 0 based on Foata normal form. 12911/173416 useless extension candidates. Maximal degree in co-relation 165443. Up to 24024 conditions per place. [2021-06-11 09:40:03,011 INFO L132 encePairwiseOnDemand]: 329/339 looper letters, 7 selfloop transitions, 1 changer transitions 0/270 dead transitions. [2021-06-11 09:40:03,011 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 270 transitions, 811 flow [2021-06-11 09:40:03,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:40:03,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:40:03,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 983 transitions. [2021-06-11 09:40:03,013 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9665683382497542 [2021-06-11 09:40:03,013 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 983 transitions. [2021-06-11 09:40:03,013 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 983 transitions. [2021-06-11 09:40:03,014 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:40:03,014 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 983 transitions. [2021-06-11 09:40:03,015 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 327.6666666666667) internal successors, (983), 3 states have internal predecessors, (983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:40:03,017 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:40:03,018 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:40:03,018 INFO L185 Difference]: Start difference. First operand has 68 places, 279 transitions, 822 flow. Second operand 3 states and 983 transitions. [2021-06-11 09:40:03,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 270 transitions, 811 flow [2021-06-11 09:40:03,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 270 transitions, 810 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-11 09:40:03,053 INFO L241 Difference]: Finished difference. Result has 69 places, 270 transitions, 796 flow [2021-06-11 09:40:03,053 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=794, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=796, PETRI_PLACES=69, PETRI_TRANSITIONS=270} [2021-06-11 09:40:03,054 INFO L343 CegarLoopForPetriNet]: 98 programPoint places, -29 predicate places. [2021-06-11 09:40:03,054 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:40:03,054 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 270 transitions, 796 flow [2021-06-11 09:40:03,054 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 270 transitions, 796 flow [2021-06-11 09:40:03,055 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 69 places, 270 transitions, 796 flow [2021-06-11 09:40:08,833 INFO L129 PetriNetUnfolder]: 135672/160505 cut-off events. [2021-06-11 09:40:08,834 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:40:09,339 INFO L84 FinitePrefix]: Finished finitePrefix Result has 160525 conditions, 160505 events. 135672/160505 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4488. Compared 704622 event pairs, 0 based on Foata normal form. 0/160505 useless extension candidates. Maximal degree in co-relation 160502. Up to 24024 conditions per place. [2021-06-11 09:40:11,064 INFO L151 LiptonReduction]: Number of co-enabled transitions 7110 [2021-06-11 09:40:11,081 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:40:11,081 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:40:11,081 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 8027 [2021-06-11 09:40:11,082 INFO L480 AbstractCegarLoop]: Abstraction has has 69 places, 270 transitions, 796 flow [2021-06-11 09:40:11,082 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:40:11,082 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:40:11,082 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 09:40:11,083 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-11 09:40:11,083 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr14INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr15INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-06-11 09:40:11,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:40:11,083 INFO L82 PathProgramCache]: Analyzing trace with hash -1233565205, now seen corresponding path program 1 times [2021-06-11 09:40:11,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:40:11,083 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723939373] [2021-06-11 09:40:11,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:40:11,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:40:11,101 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:40:11,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:40:11,102 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:40:11,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:40:11,104 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:40:11,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:40:11,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:40:11,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723939373] [2021-06-11 09:40:11,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:40:11,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 09:40:11,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292069637] [2021-06-11 09:40:11,105 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:40:11,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:40:11,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:40:11,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:40:11,106 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 339 [2021-06-11 09:40:11,107 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 270 transitions, 796 flow. Second operand has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:40:11,107 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:40:11,107 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 339 [2021-06-11 09:40:11,107 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:40:17,062 INFO L129 PetriNetUnfolder]: 125350/149090 cut-off events. [2021-06-11 09:40:17,062 INFO L130 PetriNetUnfolder]: For 10756/10756 co-relation queries the response was YES. [2021-06-11 09:40:17,569 INFO L84 FinitePrefix]: Finished finitePrefix Result has 158775 conditions, 149090 events. 125350/149090 cut-off events. For 10756/10756 co-relation queries the response was YES. Maximal size of possible extension queue 4390. Compared 747541 event pairs, 0 based on Foata normal form. 1093/150183 useless extension candidates. Maximal degree in co-relation 158750. Up to 24024 conditions per place. [2021-06-11 09:40:18,171 INFO L132 encePairwiseOnDemand]: 333/339 looper letters, 11 selfloop transitions, 1 changer transitions 0/265 dead transitions. [2021-06-11 09:40:18,172 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 265 transitions, 805 flow [2021-06-11 09:40:18,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:40:18,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:40:18,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 983 transitions. [2021-06-11 09:40:18,174 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9665683382497542 [2021-06-11 09:40:18,174 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 983 transitions. [2021-06-11 09:40:18,174 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 983 transitions. [2021-06-11 09:40:18,174 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:40:18,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 983 transitions. [2021-06-11 09:40:18,182 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 327.6666666666667) internal successors, (983), 3 states have internal predecessors, (983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:40:18,184 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:40:18,184 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:40:18,184 INFO L185 Difference]: Start difference. First operand has 69 places, 270 transitions, 796 flow. Second operand 3 states and 983 transitions. [2021-06-11 09:40:18,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 265 transitions, 805 flow [2021-06-11 09:40:18,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 265 transitions, 804 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-11 09:40:18,209 INFO L241 Difference]: Finished difference. Result has 70 places, 265 transitions, 782 flow [2021-06-11 09:40:18,210 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=780, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=782, PETRI_PLACES=70, PETRI_TRANSITIONS=265} [2021-06-11 09:40:18,210 INFO L343 CegarLoopForPetriNet]: 98 programPoint places, -28 predicate places. [2021-06-11 09:40:18,210 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:40:18,211 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 70 places, 265 transitions, 782 flow [2021-06-11 09:40:18,212 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 70 places, 265 transitions, 782 flow [2021-06-11 09:40:18,216 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 70 places, 265 transitions, 782 flow [2021-06-11 09:40:23,554 INFO L129 PetriNetUnfolder]: 125350/149090 cut-off events. [2021-06-11 09:40:23,554 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:40:24,016 INFO L84 FinitePrefix]: Finished finitePrefix Result has 149111 conditions, 149090 events. 125350/149090 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4488. Compared 665601 event pairs, 0 based on Foata normal form. 0/149090 useless extension candidates. Maximal degree in co-relation 149096. Up to 24024 conditions per place. [2021-06-11 09:40:25,518 INFO L151 LiptonReduction]: Number of co-enabled transitions 6960 [2021-06-11 09:40:25,533 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:40:25,534 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:40:25,534 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 7324 [2021-06-11 09:40:25,534 INFO L480 AbstractCegarLoop]: Abstraction has has 70 places, 265 transitions, 782 flow [2021-06-11 09:40:25,535 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:40:25,535 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:40:25,535 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 09:40:25,535 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-11 09:40:25,535 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr14INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr15INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-06-11 09:40:25,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:40:25,535 INFO L82 PathProgramCache]: Analyzing trace with hash -861950085, now seen corresponding path program 1 times [2021-06-11 09:40:25,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:40:25,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071483277] [2021-06-11 09:40:25,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:40:25,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:40:25,556 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:40:25,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:40:25,558 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:40:25,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:40:25,560 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:40:25,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:40:25,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:40:25,561 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071483277] [2021-06-11 09:40:25,561 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:40:25,561 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 09:40:25,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120891321] [2021-06-11 09:40:25,562 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:40:25,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:40:25,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:40:25,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:40:25,563 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 339 [2021-06-11 09:40:25,563 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 265 transitions, 782 flow. Second operand has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:40:25,563 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:40:25,563 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 339 [2021-06-11 09:40:25,564 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:40:30,377 INFO L129 PetriNetUnfolder]: 96298/116241 cut-off events. [2021-06-11 09:40:30,377 INFO L130 PetriNetUnfolder]: For 9962/9962 co-relation queries the response was YES. [2021-06-11 09:40:30,736 INFO L84 FinitePrefix]: Finished finitePrefix Result has 122924 conditions, 116241 events. 96298/116241 cut-off events. For 9962/9962 co-relation queries the response was YES. Maximal size of possible extension queue 4390. Compared 596103 event pairs, 0 based on Foata normal form. 3302/119543 useless extension candidates. Maximal degree in co-relation 122908. Up to 21840 conditions per place. [2021-06-11 09:40:31,052 INFO L132 encePairwiseOnDemand]: 331/339 looper letters, 9 selfloop transitions, 1 changer transitions 0/258 dead transitions. [2021-06-11 09:40:31,052 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 258 transitions, 781 flow [2021-06-11 09:40:31,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:40:31,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:40:31,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 983 transitions. [2021-06-11 09:40:31,054 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9665683382497542 [2021-06-11 09:40:31,054 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 983 transitions. [2021-06-11 09:40:31,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 983 transitions. [2021-06-11 09:40:31,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:40:31,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 983 transitions. [2021-06-11 09:40:31,056 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 327.6666666666667) internal successors, (983), 3 states have internal predecessors, (983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:40:31,057 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:40:31,058 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:40:31,058 INFO L185 Difference]: Start difference. First operand has 70 places, 265 transitions, 782 flow. Second operand 3 states and 983 transitions. [2021-06-11 09:40:31,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 258 transitions, 781 flow [2021-06-11 09:40:31,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 258 transitions, 780 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-11 09:40:31,089 INFO L241 Difference]: Finished difference. Result has 71 places, 258 transitions, 762 flow [2021-06-11 09:40:31,089 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=760, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=762, PETRI_PLACES=71, PETRI_TRANSITIONS=258} [2021-06-11 09:40:31,089 INFO L343 CegarLoopForPetriNet]: 98 programPoint places, -27 predicate places. [2021-06-11 09:40:31,089 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:40:31,089 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 71 places, 258 transitions, 762 flow [2021-06-11 09:40:31,090 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 71 places, 258 transitions, 762 flow [2021-06-11 09:40:31,090 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 71 places, 258 transitions, 762 flow [2021-06-11 09:40:35,192 INFO L129 PetriNetUnfolder]: 96298/116241 cut-off events. [2021-06-11 09:40:35,193 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:40:35,556 INFO L84 FinitePrefix]: Finished finitePrefix Result has 116263 conditions, 116241 events. 96298/116241 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4488. Compared 532533 event pairs, 0 based on Foata normal form. 0/116241 useless extension candidates. Maximal degree in co-relation 116248. Up to 21840 conditions per place. [2021-06-11 09:40:36,505 INFO L151 LiptonReduction]: Number of co-enabled transitions 6750 [2021-06-11 09:40:36,520 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:40:36,520 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:40:36,520 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 5431 [2021-06-11 09:40:36,521 INFO L480 AbstractCegarLoop]: Abstraction has has 71 places, 258 transitions, 762 flow [2021-06-11 09:40:36,521 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:40:36,521 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:40:36,522 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 09:40:36,522 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-11 09:40:36,522 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr14INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr15INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-06-11 09:40:36,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:40:36,522 INFO L82 PathProgramCache]: Analyzing trace with hash -592466757, now seen corresponding path program 1 times [2021-06-11 09:40:36,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:40:36,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481822740] [2021-06-11 09:40:36,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:40:36,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:40:36,542 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:40:36,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:40:36,543 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:40:36,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:40:36,545 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:40:36,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:40:36,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:40:36,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481822740] [2021-06-11 09:40:36,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:40:36,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 09:40:36,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990801658] [2021-06-11 09:40:36,546 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:40:36,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:40:36,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:40:36,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:40:36,548 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 339 [2021-06-11 09:40:36,548 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 258 transitions, 762 flow. Second operand has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:40:36,548 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:40:36,548 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 339 [2021-06-11 09:40:36,548 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:40:39,904 INFO L129 PetriNetUnfolder]: 70668/86617 cut-off events. [2021-06-11 09:40:39,904 INFO L130 PetriNetUnfolder]: For 7684/7684 co-relation queries the response was YES. [2021-06-11 09:40:40,185 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91585 conditions, 86617 events. 70668/86617 cut-off events. For 7684/7684 co-relation queries the response was YES. Maximal size of possible extension queue 4390. Compared 449084 event pairs, 0 based on Foata normal form. 2740/89357 useless extension candidates. Maximal degree in co-relation 91569. Up to 21840 conditions per place. [2021-06-11 09:40:40,422 INFO L132 encePairwiseOnDemand]: 330/339 looper letters, 8 selfloop transitions, 1 changer transitions 0/250 dead transitions. [2021-06-11 09:40:40,423 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 250 transitions, 756 flow [2021-06-11 09:40:40,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:40:40,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:40:40,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 983 transitions. [2021-06-11 09:40:40,425 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9665683382497542 [2021-06-11 09:40:40,425 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 983 transitions. [2021-06-11 09:40:40,425 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 983 transitions. [2021-06-11 09:40:40,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:40:40,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 983 transitions. [2021-06-11 09:40:40,426 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 327.6666666666667) internal successors, (983), 3 states have internal predecessors, (983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:40:40,428 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:40:40,428 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:40:40,428 INFO L185 Difference]: Start difference. First operand has 71 places, 258 transitions, 762 flow. Second operand 3 states and 983 transitions. [2021-06-11 09:40:40,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 250 transitions, 756 flow [2021-06-11 09:40:40,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 250 transitions, 755 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-11 09:40:40,447 INFO L241 Difference]: Finished difference. Result has 72 places, 250 transitions, 739 flow [2021-06-11 09:40:40,447 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=737, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=739, PETRI_PLACES=72, PETRI_TRANSITIONS=250} [2021-06-11 09:40:40,448 INFO L343 CegarLoopForPetriNet]: 98 programPoint places, -26 predicate places. [2021-06-11 09:40:40,450 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:40:40,450 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 72 places, 250 transitions, 739 flow [2021-06-11 09:40:40,450 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 72 places, 250 transitions, 739 flow [2021-06-11 09:40:40,451 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 72 places, 250 transitions, 739 flow [2021-06-11 09:40:43,519 INFO L129 PetriNetUnfolder]: 70668/86617 cut-off events. [2021-06-11 09:40:43,519 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:40:43,790 INFO L84 FinitePrefix]: Finished finitePrefix Result has 86640 conditions, 86617 events. 70668/86617 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4488. Compared 411704 event pairs, 0 based on Foata normal form. 0/86617 useless extension candidates. Maximal degree in co-relation 86625. Up to 21840 conditions per place. [2021-06-11 09:40:44,606 INFO L151 LiptonReduction]: Number of co-enabled transitions 6510 [2021-06-11 09:40:44,620 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:40:44,620 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:40:44,620 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 4170 [2021-06-11 09:40:44,621 INFO L480 AbstractCegarLoop]: Abstraction has has 72 places, 250 transitions, 739 flow [2021-06-11 09:40:44,621 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:40:44,621 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:40:44,621 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 09:40:44,621 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-11 09:40:44,621 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr14INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr15INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-06-11 09:40:44,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:40:44,622 INFO L82 PathProgramCache]: Analyzing trace with hash -1871287281, now seen corresponding path program 1 times [2021-06-11 09:40:44,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:40:44,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400645987] [2021-06-11 09:40:44,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:40:44,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:40:44,635 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:40:44,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:40:44,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:40:44,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:40:44,638 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:40:44,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:40:44,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:40:44,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400645987] [2021-06-11 09:40:44,639 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:40:44,639 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 09:40:44,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021013287] [2021-06-11 09:40:44,639 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:40:44,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:40:44,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:40:44,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:40:44,640 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 339 [2021-06-11 09:40:44,641 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 250 transitions, 739 flow. Second operand has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:40:44,641 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:40:44,641 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 339 [2021-06-11 09:40:44,641 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:40:45,666 INFO L129 PetriNetUnfolder]: 22146/28336 cut-off events. [2021-06-11 09:40:45,667 INFO L130 PetriNetUnfolder]: For 5582/5582 co-relation queries the response was YES. [2021-06-11 09:40:45,716 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28937 conditions, 28336 events. 22146/28336 cut-off events. For 5582/5582 co-relation queries the response was YES. Maximal size of possible extension queue 1373. Compared 144830 event pairs, 0 based on Foata normal form. 5006/33342 useless extension candidates. Maximal degree in co-relation 28921. Up to 5460 conditions per place. [2021-06-11 09:40:45,781 INFO L132 encePairwiseOnDemand]: 326/339 looper letters, 4 selfloop transitions, 1 changer transitions 0/238 dead transitions. [2021-06-11 09:40:45,781 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 238 transitions, 713 flow [2021-06-11 09:40:45,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:40:45,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:40:45,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 983 transitions. [2021-06-11 09:40:45,783 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9665683382497542 [2021-06-11 09:40:45,783 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 983 transitions. [2021-06-11 09:40:45,783 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 983 transitions. [2021-06-11 09:40:45,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:40:45,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 983 transitions. [2021-06-11 09:40:45,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 327.6666666666667) internal successors, (983), 3 states have internal predecessors, (983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:40:45,786 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:40:45,786 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:40:45,786 INFO L185 Difference]: Start difference. First operand has 72 places, 250 transitions, 739 flow. Second operand 3 states and 983 transitions. [2021-06-11 09:40:45,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 238 transitions, 713 flow [2021-06-11 09:40:45,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 238 transitions, 712 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-11 09:40:45,790 INFO L241 Difference]: Finished difference. Result has 73 places, 238 transitions, 704 flow [2021-06-11 09:40:45,790 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=702, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=704, PETRI_PLACES=73, PETRI_TRANSITIONS=238} [2021-06-11 09:40:45,790 INFO L343 CegarLoopForPetriNet]: 98 programPoint places, -25 predicate places. [2021-06-11 09:40:45,791 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:40:45,791 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 73 places, 238 transitions, 704 flow [2021-06-11 09:40:45,791 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 73 places, 238 transitions, 704 flow [2021-06-11 09:40:45,791 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 73 places, 238 transitions, 704 flow [2021-06-11 09:40:46,710 INFO L129 PetriNetUnfolder]: 22146/28336 cut-off events. [2021-06-11 09:40:46,710 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:40:46,770 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28360 conditions, 28336 events. 22146/28336 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1401. Compared 133326 event pairs, 0 based on Foata normal form. 0/28336 useless extension candidates. Maximal degree in co-relation 28345. Up to 5460 conditions per place. [2021-06-11 09:40:46,889 INFO L151 LiptonReduction]: Number of co-enabled transitions 6150 [2021-06-11 09:40:46,904 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:40:46,905 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:40:46,905 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1114 [2021-06-11 09:40:46,905 INFO L480 AbstractCegarLoop]: Abstraction has has 73 places, 238 transitions, 704 flow [2021-06-11 09:40:46,906 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:40:46,906 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:40:46,906 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 09:40:46,906 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-11 09:40:46,906 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr14INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr15INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-06-11 09:40:46,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:40:46,907 INFO L82 PathProgramCache]: Analyzing trace with hash 1016495101, now seen corresponding path program 1 times [2021-06-11 09:40:46,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:40:46,907 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945475642] [2021-06-11 09:40:46,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:40:46,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:40:46,925 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:40:46,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:40:46,926 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:40:46,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:40:46,928 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:40:46,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:40:46,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:40:46,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945475642] [2021-06-11 09:40:46,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:40:46,929 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 09:40:46,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104347500] [2021-06-11 09:40:46,930 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:40:46,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:40:46,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:40:46,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:40:46,931 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 339 [2021-06-11 09:40:46,931 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 238 transitions, 704 flow. Second operand has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:40:46,931 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:40:46,931 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 339 [2021-06-11 09:40:46,931 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:40:47,275 INFO L129 PetriNetUnfolder]: 8415/11346 cut-off events. [2021-06-11 09:40:47,275 INFO L130 PetriNetUnfolder]: For 1959/1959 co-relation queries the response was YES. [2021-06-11 09:40:47,295 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11948 conditions, 11346 events. 8415/11346 cut-off events. For 1959/1959 co-relation queries the response was YES. Maximal size of possible extension queue 563. Compared 57593 event pairs, 0 based on Foata normal form. 1383/12729 useless extension candidates. Maximal degree in co-relation 11932. Up to 1820 conditions per place. [2021-06-11 09:40:47,324 INFO L132 encePairwiseOnDemand]: 327/339 looper letters, 5 selfloop transitions, 1 changer transitions 0/227 dead transitions. [2021-06-11 09:40:47,324 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 227 transitions, 683 flow [2021-06-11 09:40:47,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:40:47,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:40:47,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 983 transitions. [2021-06-11 09:40:47,326 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9665683382497542 [2021-06-11 09:40:47,326 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 983 transitions. [2021-06-11 09:40:47,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 983 transitions. [2021-06-11 09:40:47,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:40:47,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 983 transitions. [2021-06-11 09:40:47,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 327.6666666666667) internal successors, (983), 3 states have internal predecessors, (983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:40:47,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:40:47,329 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:40:47,329 INFO L185 Difference]: Start difference. First operand has 73 places, 238 transitions, 704 flow. Second operand 3 states and 983 transitions. [2021-06-11 09:40:47,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 227 transitions, 683 flow [2021-06-11 09:40:47,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 227 transitions, 682 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-11 09:40:47,334 INFO L241 Difference]: Finished difference. Result has 74 places, 227 transitions, 672 flow [2021-06-11 09:40:47,334 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=670, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=672, PETRI_PLACES=74, PETRI_TRANSITIONS=227} [2021-06-11 09:40:47,334 INFO L343 CegarLoopForPetriNet]: 98 programPoint places, -24 predicate places. [2021-06-11 09:40:47,334 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:40:47,334 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 74 places, 227 transitions, 672 flow [2021-06-11 09:40:47,334 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 74 places, 227 transitions, 672 flow [2021-06-11 09:40:47,335 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 74 places, 227 transitions, 672 flow [2021-06-11 09:40:47,719 INFO L129 PetriNetUnfolder]: 8415/11346 cut-off events. [2021-06-11 09:40:47,720 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:40:47,730 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11371 conditions, 11346 events. 8415/11346 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 569. Compared 53356 event pairs, 0 based on Foata normal form. 0/11346 useless extension candidates. Maximal degree in co-relation 11356. Up to 1820 conditions per place. [2021-06-11 09:40:47,772 INFO L151 LiptonReduction]: Number of co-enabled transitions 5820 [2021-06-11 09:40:47,783 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:40:47,783 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:40:47,783 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 449 [2021-06-11 09:40:47,784 INFO L480 AbstractCegarLoop]: Abstraction has has 74 places, 227 transitions, 672 flow [2021-06-11 09:40:47,784 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:40:47,784 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:40:47,784 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 09:40:47,784 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-11 09:40:47,784 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr14INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr15INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-06-11 09:40:47,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:40:47,785 INFO L82 PathProgramCache]: Analyzing trace with hash -1214096417, now seen corresponding path program 1 times [2021-06-11 09:40:47,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:40:47,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759441763] [2021-06-11 09:40:47,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:40:47,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:40:47,796 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:40:47,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:40:47,797 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:40:47,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:40:47,799 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:40:47,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:40:47,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:40:47,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759441763] [2021-06-11 09:40:47,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:40:47,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 09:40:47,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730363045] [2021-06-11 09:40:47,800 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:40:47,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:40:47,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:40:47,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:40:47,801 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 339 [2021-06-11 09:40:47,802 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 227 transitions, 672 flow. Second operand has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:40:47,802 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:40:47,802 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 339 [2021-06-11 09:40:47,802 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:40:47,903 INFO L129 PetriNetUnfolder]: 2037/2985 cut-off events. [2021-06-11 09:40:47,903 INFO L130 PetriNetUnfolder]: For 795/795 co-relation queries the response was YES. [2021-06-11 09:40:47,908 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3133 conditions, 2985 events. 2037/2985 cut-off events. For 795/795 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 13857 event pairs, 0 based on Foata normal form. 674/3659 useless extension candidates. Maximal degree in co-relation 3117. Up to 315 conditions per place. [2021-06-11 09:40:47,914 INFO L132 encePairwiseOnDemand]: 325/339 looper letters, 3 selfloop transitions, 1 changer transitions 0/214 dead transitions. [2021-06-11 09:40:47,915 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 214 transitions, 641 flow [2021-06-11 09:40:47,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:40:47,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:40:47,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 983 transitions. [2021-06-11 09:40:47,916 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9665683382497542 [2021-06-11 09:40:47,916 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 983 transitions. [2021-06-11 09:40:47,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 983 transitions. [2021-06-11 09:40:47,917 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:40:47,917 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 983 transitions. [2021-06-11 09:40:47,918 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 327.6666666666667) internal successors, (983), 3 states have internal predecessors, (983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:40:47,919 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:40:47,919 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:40:47,919 INFO L185 Difference]: Start difference. First operand has 74 places, 227 transitions, 672 flow. Second operand 3 states and 983 transitions. [2021-06-11 09:40:47,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 214 transitions, 641 flow [2021-06-11 09:40:47,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 214 transitions, 640 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-11 09:40:47,922 INFO L241 Difference]: Finished difference. Result has 75 places, 214 transitions, 634 flow [2021-06-11 09:40:47,922 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=632, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=634, PETRI_PLACES=75, PETRI_TRANSITIONS=214} [2021-06-11 09:40:47,923 INFO L343 CegarLoopForPetriNet]: 98 programPoint places, -23 predicate places. [2021-06-11 09:40:47,923 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:40:47,923 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 75 places, 214 transitions, 634 flow [2021-06-11 09:40:47,923 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 75 places, 214 transitions, 634 flow [2021-06-11 09:40:47,923 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 75 places, 214 transitions, 634 flow [2021-06-11 09:40:47,998 INFO L129 PetriNetUnfolder]: 2037/2985 cut-off events. [2021-06-11 09:40:47,998 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:40:48,002 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3011 conditions, 2985 events. 2037/2985 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 12779 event pairs, 0 based on Foata normal form. 0/2985 useless extension candidates. Maximal degree in co-relation 2996. Up to 315 conditions per place. [2021-06-11 09:40:48,017 INFO L151 LiptonReduction]: Number of co-enabled transitions 5430 [2021-06-11 09:40:48,027 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:40:48,027 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:40:48,027 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 104 [2021-06-11 09:40:48,028 INFO L480 AbstractCegarLoop]: Abstraction has has 75 places, 214 transitions, 634 flow [2021-06-11 09:40:48,028 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:40:48,028 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:40:48,029 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 09:40:48,029 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-11 09:40:48,029 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr14INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr15INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-06-11 09:40:48,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:40:48,029 INFO L82 PathProgramCache]: Analyzing trace with hash -187755651, now seen corresponding path program 1 times [2021-06-11 09:40:48,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:40:48,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618282482] [2021-06-11 09:40:48,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:40:48,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:40:48,043 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:40:48,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:40:48,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:40:48,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:40:48,046 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:40:48,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:40:48,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:40:48,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618282482] [2021-06-11 09:40:48,047 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:40:48,047 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 09:40:48,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299464535] [2021-06-11 09:40:48,047 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:40:48,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:40:48,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:40:48,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:40:48,048 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 339 [2021-06-11 09:40:48,049 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 214 transitions, 634 flow. Second operand has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:40:48,049 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:40:48,049 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 339 [2021-06-11 09:40:48,049 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:40:48,151 INFO L129 PetriNetUnfolder]: 1988/2928 cut-off events. [2021-06-11 09:40:48,151 INFO L130 PetriNetUnfolder]: For 241/241 co-relation queries the response was YES. [2021-06-11 09:40:48,156 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3189 conditions, 2928 events. 1988/2928 cut-off events. For 241/241 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 13600 event pairs, 0 based on Foata normal form. 8/2936 useless extension candidates. Maximal degree in co-relation 3172. Up to 315 conditions per place. [2021-06-11 09:40:48,163 INFO L132 encePairwiseOnDemand]: 336/339 looper letters, 14 selfloop transitions, 1 changer transitions 0/212 dead transitions. [2021-06-11 09:40:48,163 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 212 transitions, 658 flow [2021-06-11 09:40:48,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:40:48,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:40:48,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 983 transitions. [2021-06-11 09:40:48,165 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9665683382497542 [2021-06-11 09:40:48,165 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 983 transitions. [2021-06-11 09:40:48,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 983 transitions. [2021-06-11 09:40:48,166 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:40:48,166 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 983 transitions. [2021-06-11 09:40:48,167 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 327.6666666666667) internal successors, (983), 3 states have internal predecessors, (983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:40:48,168 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:40:48,168 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:40:48,168 INFO L185 Difference]: Start difference. First operand has 75 places, 214 transitions, 634 flow. Second operand 3 states and 983 transitions. [2021-06-11 09:40:48,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 212 transitions, 658 flow [2021-06-11 09:40:48,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 212 transitions, 657 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-11 09:40:48,172 INFO L241 Difference]: Finished difference. Result has 76 places, 212 transitions, 629 flow [2021-06-11 09:40:48,172 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=627, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=629, PETRI_PLACES=76, PETRI_TRANSITIONS=212} [2021-06-11 09:40:48,172 INFO L343 CegarLoopForPetriNet]: 98 programPoint places, -22 predicate places. [2021-06-11 09:40:48,172 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:40:48,172 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 212 transitions, 629 flow [2021-06-11 09:40:48,172 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 76 places, 212 transitions, 629 flow [2021-06-11 09:40:48,173 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 76 places, 212 transitions, 629 flow [2021-06-11 09:40:48,249 INFO L129 PetriNetUnfolder]: 1988/2928 cut-off events. [2021-06-11 09:40:48,249 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:40:48,253 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2955 conditions, 2928 events. 1988/2928 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 12617 event pairs, 0 based on Foata normal form. 0/2928 useless extension candidates. Maximal degree in co-relation 2946. Up to 315 conditions per place. [2021-06-11 09:40:48,268 INFO L151 LiptonReduction]: Number of co-enabled transitions 5370 [2021-06-11 09:40:48,278 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:40:48,278 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:40:48,278 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 106 [2021-06-11 09:40:48,279 INFO L480 AbstractCegarLoop]: Abstraction has has 76 places, 212 transitions, 629 flow [2021-06-11 09:40:48,280 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:40:48,280 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:40:48,280 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 09:40:48,280 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-11 09:40:48,280 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr14INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr15INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-06-11 09:40:48,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:40:48,280 INFO L82 PathProgramCache]: Analyzing trace with hash 1319369611, now seen corresponding path program 1 times [2021-06-11 09:40:48,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:40:48,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087968170] [2021-06-11 09:40:48,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:40:48,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:40:48,292 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:40:48,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:40:48,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:40:48,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:40:48,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:40:48,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:40:48,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:40:48,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087968170] [2021-06-11 09:40:48,296 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:40:48,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 09:40:48,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92659084] [2021-06-11 09:40:48,297 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:40:48,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:40:48,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:40:48,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:40:48,298 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 339 [2021-06-11 09:40:48,298 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 212 transitions, 629 flow. Second operand has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:40:48,298 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:40:48,298 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 339 [2021-06-11 09:40:48,298 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:40:48,397 INFO L129 PetriNetUnfolder]: 1707/2584 cut-off events. [2021-06-11 09:40:48,398 INFO L130 PetriNetUnfolder]: For 234/234 co-relation queries the response was YES. [2021-06-11 09:40:48,402 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2790 conditions, 2584 events. 1707/2584 cut-off events. For 234/234 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 12249 event pairs, 0 based on Foata normal form. 57/2641 useless extension candidates. Maximal degree in co-relation 2780. Up to 315 conditions per place. [2021-06-11 09:40:48,407 INFO L132 encePairwiseOnDemand]: 334/339 looper letters, 12 selfloop transitions, 1 changer transitions 0/208 dead transitions. [2021-06-11 09:40:48,407 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 208 transitions, 643 flow [2021-06-11 09:40:48,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:40:48,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:40:48,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 983 transitions. [2021-06-11 09:40:48,409 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9665683382497542 [2021-06-11 09:40:48,409 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 983 transitions. [2021-06-11 09:40:48,409 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 983 transitions. [2021-06-11 09:40:48,409 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:40:48,410 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 983 transitions. [2021-06-11 09:40:48,411 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 327.6666666666667) internal successors, (983), 3 states have internal predecessors, (983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:40:48,412 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:40:48,412 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:40:48,412 INFO L185 Difference]: Start difference. First operand has 76 places, 212 transitions, 629 flow. Second operand 3 states and 983 transitions. [2021-06-11 09:40:48,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 208 transitions, 643 flow [2021-06-11 09:40:48,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 208 transitions, 642 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-11 09:40:48,416 INFO L241 Difference]: Finished difference. Result has 77 places, 208 transitions, 618 flow [2021-06-11 09:40:48,416 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=616, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=618, PETRI_PLACES=77, PETRI_TRANSITIONS=208} [2021-06-11 09:40:48,417 INFO L343 CegarLoopForPetriNet]: 98 programPoint places, -21 predicate places. [2021-06-11 09:40:48,417 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:40:48,417 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 208 transitions, 618 flow [2021-06-11 09:40:48,417 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 208 transitions, 618 flow [2021-06-11 09:40:48,418 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 77 places, 208 transitions, 618 flow [2021-06-11 09:40:48,485 INFO L129 PetriNetUnfolder]: 1707/2584 cut-off events. [2021-06-11 09:40:48,485 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:40:48,489 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2612 conditions, 2584 events. 1707/2584 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 11463 event pairs, 0 based on Foata normal form. 0/2584 useless extension candidates. Maximal degree in co-relation 2603. Up to 315 conditions per place. [2021-06-11 09:40:48,501 INFO L151 LiptonReduction]: Number of co-enabled transitions 5250 [2021-06-11 09:40:48,511 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:40:48,512 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:40:48,512 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 95 [2021-06-11 09:40:48,512 INFO L480 AbstractCegarLoop]: Abstraction has has 77 places, 208 transitions, 618 flow [2021-06-11 09:40:48,513 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:40:48,513 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:40:48,513 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 09:40:48,513 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-11 09:40:48,513 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr14INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr15INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-06-11 09:40:48,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:40:48,513 INFO L82 PathProgramCache]: Analyzing trace with hash 2047114435, now seen corresponding path program 1 times [2021-06-11 09:40:48,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:40:48,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963978787] [2021-06-11 09:40:48,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:40:48,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:40:48,536 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:40:48,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:40:48,537 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:40:48,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:40:48,539 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:40:48,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:40:48,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:40:48,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963978787] [2021-06-11 09:40:48,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:40:48,540 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 09:40:48,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853279511] [2021-06-11 09:40:48,540 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:40:48,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:40:48,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:40:48,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:40:48,541 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 339 [2021-06-11 09:40:48,542 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 208 transitions, 618 flow. Second operand has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:40:48,542 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:40:48,542 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 339 [2021-06-11 09:40:48,542 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:40:48,635 INFO L129 PetriNetUnfolder]: 1702/2578 cut-off events. [2021-06-11 09:40:48,636 INFO L130 PetriNetUnfolder]: For 193/193 co-relation queries the response was YES. [2021-06-11 09:40:48,640 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2800 conditions, 2578 events. 1702/2578 cut-off events. For 193/193 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 12386 event pairs, 0 based on Foata normal form. 1/2579 useless extension candidates. Maximal degree in co-relation 2789. Up to 315 conditions per place. [2021-06-11 09:40:48,645 INFO L132 encePairwiseOnDemand]: 337/339 looper letters, 15 selfloop transitions, 1 changer transitions 0/207 dead transitions. [2021-06-11 09:40:48,645 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 207 transitions, 647 flow [2021-06-11 09:40:48,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:40:48,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:40:48,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 983 transitions. [2021-06-11 09:40:48,647 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9665683382497542 [2021-06-11 09:40:48,647 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 983 transitions. [2021-06-11 09:40:48,647 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 983 transitions. [2021-06-11 09:40:48,648 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:40:48,648 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 983 transitions. [2021-06-11 09:40:48,649 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 327.6666666666667) internal successors, (983), 3 states have internal predecessors, (983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:40:48,650 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:40:48,650 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:40:48,650 INFO L185 Difference]: Start difference. First operand has 77 places, 208 transitions, 618 flow. Second operand 3 states and 983 transitions. [2021-06-11 09:40:48,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 207 transitions, 647 flow [2021-06-11 09:40:48,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 207 transitions, 646 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-11 09:40:48,653 INFO L241 Difference]: Finished difference. Result has 78 places, 207 transitions, 616 flow [2021-06-11 09:40:48,653 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=614, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=616, PETRI_PLACES=78, PETRI_TRANSITIONS=207} [2021-06-11 09:40:48,653 INFO L343 CegarLoopForPetriNet]: 98 programPoint places, -20 predicate places. [2021-06-11 09:40:48,653 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:40:48,654 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 207 transitions, 616 flow [2021-06-11 09:40:48,654 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 207 transitions, 616 flow [2021-06-11 09:40:48,654 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 78 places, 207 transitions, 616 flow [2021-06-11 09:40:48,721 INFO L129 PetriNetUnfolder]: 1702/2578 cut-off events. [2021-06-11 09:40:48,722 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:40:48,725 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2607 conditions, 2578 events. 1702/2578 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 11434 event pairs, 0 based on Foata normal form. 0/2578 useless extension candidates. Maximal degree in co-relation 2600. Up to 315 conditions per place. [2021-06-11 09:40:48,738 INFO L151 LiptonReduction]: Number of co-enabled transitions 5220 [2021-06-11 09:40:48,748 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:40:48,748 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:40:48,748 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 95 [2021-06-11 09:40:48,749 INFO L480 AbstractCegarLoop]: Abstraction has has 78 places, 207 transitions, 616 flow [2021-06-11 09:40:48,749 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:40:48,749 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:40:48,749 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 09:40:48,749 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-06-11 09:40:48,749 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr14INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr15INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-06-11 09:40:48,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:40:48,750 INFO L82 PathProgramCache]: Analyzing trace with hash 237829181, now seen corresponding path program 1 times [2021-06-11 09:40:48,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:40:48,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957912548] [2021-06-11 09:40:48,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:40:48,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:40:48,768 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:40:48,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:40:48,769 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:40:48,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:40:48,771 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:40:48,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:40:48,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:40:48,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957912548] [2021-06-11 09:40:48,772 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:40:48,772 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 09:40:48,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260470061] [2021-06-11 09:40:48,772 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:40:48,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:40:48,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:40:48,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:40:48,774 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 339 [2021-06-11 09:40:48,774 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 207 transitions, 616 flow. Second operand has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:40:48,774 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:40:48,774 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 339 [2021-06-11 09:40:48,774 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:40:48,875 INFO L129 PetriNetUnfolder]: 1285/2029 cut-off events. [2021-06-11 09:40:48,875 INFO L130 PetriNetUnfolder]: For 192/192 co-relation queries the response was YES. [2021-06-11 09:40:48,878 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2181 conditions, 2029 events. 1285/2029 cut-off events. For 192/192 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 9883 event pairs, 0 based on Foata normal form. 71/2100 useless extension candidates. Maximal degree in co-relation 2173. Up to 315 conditions per place. [2021-06-11 09:40:48,881 INFO L132 encePairwiseOnDemand]: 332/339 looper letters, 10 selfloop transitions, 1 changer transitions 0/201 dead transitions. [2021-06-11 09:40:48,881 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 201 transitions, 620 flow [2021-06-11 09:40:48,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:40:48,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:40:48,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 983 transitions. [2021-06-11 09:40:48,883 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9665683382497542 [2021-06-11 09:40:48,883 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 983 transitions. [2021-06-11 09:40:48,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 983 transitions. [2021-06-11 09:40:48,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:40:48,883 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 983 transitions. [2021-06-11 09:40:48,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 327.6666666666667) internal successors, (983), 3 states have internal predecessors, (983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:40:48,885 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:40:48,886 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:40:48,886 INFO L185 Difference]: Start difference. First operand has 78 places, 207 transitions, 616 flow. Second operand 3 states and 983 transitions. [2021-06-11 09:40:48,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 201 transitions, 620 flow [2021-06-11 09:40:48,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 201 transitions, 619 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-11 09:40:48,888 INFO L241 Difference]: Finished difference. Result has 79 places, 201 transitions, 599 flow [2021-06-11 09:40:48,888 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=597, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=599, PETRI_PLACES=79, PETRI_TRANSITIONS=201} [2021-06-11 09:40:48,889 INFO L343 CegarLoopForPetriNet]: 98 programPoint places, -19 predicate places. [2021-06-11 09:40:48,889 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:40:48,889 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 201 transitions, 599 flow [2021-06-11 09:40:48,889 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 79 places, 201 transitions, 599 flow [2021-06-11 09:40:48,889 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 79 places, 201 transitions, 599 flow [2021-06-11 09:40:48,943 INFO L129 PetriNetUnfolder]: 1285/2029 cut-off events. [2021-06-11 09:40:48,943 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:40:48,946 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2059 conditions, 2029 events. 1285/2029 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 9269 event pairs, 0 based on Foata normal form. 0/2029 useless extension candidates. Maximal degree in co-relation 2052. Up to 315 conditions per place. [2021-06-11 09:40:48,955 INFO L151 LiptonReduction]: Number of co-enabled transitions 5040 [2021-06-11 09:40:48,964 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:40:48,964 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:40:48,964 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 75 [2021-06-11 09:40:48,965 INFO L480 AbstractCegarLoop]: Abstraction has has 79 places, 201 transitions, 599 flow [2021-06-11 09:40:48,965 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:40:48,965 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:40:48,965 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 09:40:48,965 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-06-11 09:40:48,965 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr14INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr15INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-06-11 09:40:48,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:40:48,966 INFO L82 PathProgramCache]: Analyzing trace with hash -1663476841, now seen corresponding path program 1 times [2021-06-11 09:40:48,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:40:48,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428871819] [2021-06-11 09:40:48,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:40:48,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:40:48,976 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:40:48,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:40:48,977 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:40:48,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:40:48,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:40:48,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:40:48,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:40:48,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428871819] [2021-06-11 09:40:48,980 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:40:48,980 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 09:40:48,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761094064] [2021-06-11 09:40:48,980 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:40:48,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:40:48,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:40:48,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:40:48,981 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 339 [2021-06-11 09:40:48,981 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 201 transitions, 599 flow. Second operand has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:40:48,981 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:40:48,982 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 339 [2021-06-11 09:40:48,982 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:40:49,066 INFO L129 PetriNetUnfolder]: 1240/1969 cut-off events. [2021-06-11 09:40:49,066 INFO L130 PetriNetUnfolder]: For 131/131 co-relation queries the response was YES. [2021-06-11 09:40:49,070 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2122 conditions, 1969 events. 1240/1969 cut-off events. For 131/131 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 9538 event pairs, 0 based on Foata normal form. 10/1979 useless extension candidates. Maximal degree in co-relation 2114. Up to 315 conditions per place. [2021-06-11 09:40:49,073 INFO L132 encePairwiseOnDemand]: 335/339 looper letters, 13 selfloop transitions, 1 changer transitions 0/198 dead transitions. [2021-06-11 09:40:49,074 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 198 transitions, 618 flow [2021-06-11 09:40:49,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:40:49,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:40:49,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 983 transitions. [2021-06-11 09:40:49,075 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9665683382497542 [2021-06-11 09:40:49,075 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 983 transitions. [2021-06-11 09:40:49,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 983 transitions. [2021-06-11 09:40:49,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:40:49,076 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 983 transitions. [2021-06-11 09:40:49,077 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 327.6666666666667) internal successors, (983), 3 states have internal predecessors, (983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:40:49,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:40:49,078 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:40:49,078 INFO L185 Difference]: Start difference. First operand has 79 places, 201 transitions, 599 flow. Second operand 3 states and 983 transitions. [2021-06-11 09:40:49,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 198 transitions, 618 flow [2021-06-11 09:40:49,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 198 transitions, 617 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-11 09:40:49,081 INFO L241 Difference]: Finished difference. Result has 80 places, 198 transitions, 591 flow [2021-06-11 09:40:49,081 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=589, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=591, PETRI_PLACES=80, PETRI_TRANSITIONS=198} [2021-06-11 09:40:49,081 INFO L343 CegarLoopForPetriNet]: 98 programPoint places, -18 predicate places. [2021-06-11 09:40:49,081 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:40:49,081 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 80 places, 198 transitions, 591 flow [2021-06-11 09:40:49,081 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 80 places, 198 transitions, 591 flow [2021-06-11 09:40:49,082 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 80 places, 198 transitions, 591 flow [2021-06-11 09:40:49,136 INFO L129 PetriNetUnfolder]: 1240/1969 cut-off events. [2021-06-11 09:40:49,136 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:40:49,139 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2000 conditions, 1969 events. 1240/1969 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 9079 event pairs, 0 based on Foata normal form. 0/1969 useless extension candidates. Maximal degree in co-relation 1993. Up to 315 conditions per place. [2021-06-11 09:40:49,148 INFO L151 LiptonReduction]: Number of co-enabled transitions 4950 [2021-06-11 09:40:49,157 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:40:49,157 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:40:49,157 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 76 [2021-06-11 09:40:49,158 INFO L480 AbstractCegarLoop]: Abstraction has has 80 places, 198 transitions, 591 flow [2021-06-11 09:40:49,158 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:40:49,158 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:40:49,158 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 09:40:49,158 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-06-11 09:40:49,158 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr14INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr15INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-06-11 09:40:49,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:40:49,159 INFO L82 PathProgramCache]: Analyzing trace with hash 1216971457, now seen corresponding path program 1 times [2021-06-11 09:40:49,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:40:49,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861540820] [2021-06-11 09:40:49,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:40:49,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:40:49,166 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:40:49,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:40:49,167 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:40:49,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:40:49,169 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:40:49,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:40:49,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:40:49,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861540820] [2021-06-11 09:40:49,170 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:40:49,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 09:40:49,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181492396] [2021-06-11 09:40:49,170 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:40:49,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:40:49,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:40:49,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:40:49,171 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 339 [2021-06-11 09:40:49,172 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 198 transitions, 591 flow. Second operand has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:40:49,172 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:40:49,172 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 339 [2021-06-11 09:40:49,172 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:40:49,198 INFO L129 PetriNetUnfolder]: 120/289 cut-off events. [2021-06-11 09:40:49,198 INFO L130 PetriNetUnfolder]: For 121/121 co-relation queries the response was YES. [2021-06-11 09:40:49,198 INFO L84 FinitePrefix]: Finished finitePrefix Result has 338 conditions, 289 events. 120/289 cut-off events. For 121/121 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 985 event pairs, 0 based on Foata normal form. 105/394 useless extension candidates. Maximal degree in co-relation 330. Up to 30 conditions per place. [2021-06-11 09:40:49,199 INFO L132 encePairwiseOnDemand]: 324/339 looper letters, 2 selfloop transitions, 1 changer transitions 0/184 dead transitions. [2021-06-11 09:40:49,199 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 184 transitions, 555 flow [2021-06-11 09:40:49,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:40:49,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:40:49,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 983 transitions. [2021-06-11 09:40:49,200 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9665683382497542 [2021-06-11 09:40:49,200 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 983 transitions. [2021-06-11 09:40:49,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 983 transitions. [2021-06-11 09:40:49,201 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:40:49,201 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 983 transitions. [2021-06-11 09:40:49,202 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 327.6666666666667) internal successors, (983), 3 states have internal predecessors, (983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:40:49,203 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:40:49,203 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:40:49,203 INFO L185 Difference]: Start difference. First operand has 80 places, 198 transitions, 591 flow. Second operand 3 states and 983 transitions. [2021-06-11 09:40:49,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 184 transitions, 555 flow [2021-06-11 09:40:49,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 184 transitions, 554 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-11 09:40:49,205 INFO L241 Difference]: Finished difference. Result has 81 places, 184 transitions, 550 flow [2021-06-11 09:40:49,205 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=548, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=550, PETRI_PLACES=81, PETRI_TRANSITIONS=184} [2021-06-11 09:40:49,205 INFO L343 CegarLoopForPetriNet]: 98 programPoint places, -17 predicate places. [2021-06-11 09:40:49,206 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:40:49,206 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 184 transitions, 550 flow [2021-06-11 09:40:49,206 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 81 places, 184 transitions, 550 flow [2021-06-11 09:40:49,206 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 81 places, 184 transitions, 550 flow [2021-06-11 09:40:49,215 INFO L129 PetriNetUnfolder]: 120/289 cut-off events. [2021-06-11 09:40:49,216 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:40:49,216 INFO L84 FinitePrefix]: Finished finitePrefix Result has 321 conditions, 289 events. 120/289 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 942 event pairs, 0 based on Foata normal form. 0/289 useless extension candidates. Maximal degree in co-relation 314. Up to 30 conditions per place. [2021-06-11 09:40:49,217 INFO L151 LiptonReduction]: Number of co-enabled transitions 2290 [2021-06-11 09:40:49,224 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:40:49,224 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:40:49,224 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 18 [2021-06-11 09:40:49,225 INFO L480 AbstractCegarLoop]: Abstraction has has 81 places, 184 transitions, 550 flow [2021-06-11 09:40:49,225 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:40:49,225 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:40:49,225 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 09:40:49,225 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-06-11 09:40:49,225 INFO L428 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr14INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr15INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-06-11 09:40:49,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:40:49,226 INFO L82 PathProgramCache]: Analyzing trace with hash -1539067609, now seen corresponding path program 1 times [2021-06-11 09:40:49,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:40:49,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101348392] [2021-06-11 09:40:49,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:40:49,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:40:49,234 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:40:49,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:40:49,235 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:40:49,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:40:49,237 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:40:49,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:40:49,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:40:49,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101348392] [2021-06-11 09:40:49,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:40:49,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 09:40:49,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006084988] [2021-06-11 09:40:49,238 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:40:49,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:40:49,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:40:49,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:40:49,239 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 339 [2021-06-11 09:40:49,239 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 184 transitions, 550 flow. Second operand has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:40:49,239 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:40:49,239 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 339 [2021-06-11 09:40:49,239 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:40:49,252 INFO L129 PetriNetUnfolder]: 0/49 cut-off events. [2021-06-11 09:40:49,252 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2021-06-11 09:40:49,253 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 49 events. 0/49 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 32 event pairs, 0 based on Foata normal form. 15/64 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-06-11 09:40:49,253 INFO L132 encePairwiseOnDemand]: 323/339 looper letters, 1 selfloop transitions, 1 changer transitions 0/49 dead transitions. [2021-06-11 09:40:49,253 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 49 transitions, 149 flow [2021-06-11 09:40:49,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:40:49,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:40:49,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 983 transitions. [2021-06-11 09:40:49,254 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9665683382497542 [2021-06-11 09:40:49,254 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 983 transitions. [2021-06-11 09:40:49,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 983 transitions. [2021-06-11 09:40:49,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:40:49,255 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 983 transitions. [2021-06-11 09:40:49,256 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 327.6666666666667) internal successors, (983), 3 states have internal predecessors, (983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:40:49,257 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:40:49,257 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:40:49,257 INFO L185 Difference]: Start difference. First operand has 81 places, 184 transitions, 550 flow. Second operand 3 states and 983 transitions. [2021-06-11 09:40:49,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 49 transitions, 149 flow [2021-06-11 09:40:49,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 49 transitions, 148 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-11 09:40:49,258 INFO L241 Difference]: Finished difference. Result has 82 places, 49 transitions, 146 flow [2021-06-11 09:40:49,258 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=146, PETRI_PLACES=82, PETRI_TRANSITIONS=49} [2021-06-11 09:40:49,259 INFO L343 CegarLoopForPetriNet]: 98 programPoint places, -16 predicate places. [2021-06-11 09:40:49,259 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:40:49,259 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 82 places, 49 transitions, 146 flow [2021-06-11 09:40:49,259 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 82 places, 49 transitions, 146 flow [2021-06-11 09:40:49,259 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 82 places, 49 transitions, 146 flow [2021-06-11 09:40:49,262 INFO L129 PetriNetUnfolder]: 0/49 cut-off events. [2021-06-11 09:40:49,262 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:40:49,262 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 49 events. 0/49 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 30 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2021-06-11 09:40:49,262 INFO L151 LiptonReduction]: Number of co-enabled transitions 720 [2021-06-11 09:40:49,264 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:40:49,264 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:40:49,264 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 5 [2021-06-11 09:40:49,267 INFO L480 AbstractCegarLoop]: Abstraction has has 82 places, 49 transitions, 146 flow [2021-06-11 09:40:49,267 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:40:49,267 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:40:49,267 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 09:40:49,267 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-06-11 09:40:49,267 INFO L428 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr14INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr15INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-06-11 09:40:49,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:40:49,268 INFO L82 PathProgramCache]: Analyzing trace with hash 501923523, now seen corresponding path program 1 times [2021-06-11 09:40:49,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:40:49,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659484087] [2021-06-11 09:40:49,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:40:49,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:40:49,377 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:40:49,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:40:49,381 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:40:49,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:40:49,386 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:40:49,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 09:40:49,408 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-11 09:40:49,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-11 09:40:49,442 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-11 09:40:49,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-11 09:40:49,474 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-06-11 09:40:49,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-11 09:40:49,519 INFO L142 QuantifierPusher]: treesize reduction 27, result has 67.1 percent of original size [2021-06-11 09:40:49,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-06-11 09:40:49,579 INFO L142 QuantifierPusher]: treesize reduction 36, result has 63.6 percent of original size [2021-06-11 09:40:49,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-06-11 09:40:49,652 INFO L142 QuantifierPusher]: treesize reduction 36, result has 65.7 percent of original size [2021-06-11 09:40:49,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-06-11 09:40:49,727 INFO L142 QuantifierPusher]: treesize reduction 36, result has 67.6 percent of original size [2021-06-11 09:40:49,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-06-11 09:40:49,816 INFO L142 QuantifierPusher]: treesize reduction 45, result has 64.8 percent of original size [2021-06-11 09:40:49,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 83 [2021-06-11 09:40:49,909 INFO L142 QuantifierPusher]: treesize reduction 63, result has 59.6 percent of original size [2021-06-11 09:40:49,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 93 [2021-06-11 09:40:49,998 INFO L142 QuantifierPusher]: treesize reduction 72, result has 58.4 percent of original size [2021-06-11 09:40:50,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-06-11 09:40:50,108 INFO L142 QuantifierPusher]: treesize reduction 81, result has 57.4 percent of original size [2021-06-11 09:40:50,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 109 [2021-06-11 09:40:50,238 INFO L142 QuantifierPusher]: treesize reduction 99, result has 53.3 percent of original size [2021-06-11 09:40:50,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 113 [2021-06-11 09:40:50,367 INFO L142 QuantifierPusher]: treesize reduction 117, result has 50.0 percent of original size [2021-06-11 09:40:50,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 117 [2021-06-11 09:40:50,471 INFO L142 QuantifierPusher]: treesize reduction 135, result has 47.3 percent of original size [2021-06-11 09:40:50,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 121 [2021-06-11 09:40:50,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:40:50,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659484087] [2021-06-11 09:40:50,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:40:50,552 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-11 09:40:50,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52536445] [2021-06-11 09:40:50,552 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-11 09:40:50,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:40:50,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-11 09:40:50,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2021-06-11 09:40:50,556 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 305 out of 339 [2021-06-11 09:40:50,558 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 49 transitions, 146 flow. Second operand has 18 states, 18 states have (on average 305.94444444444446) internal successors, (5507), 18 states have internal predecessors, (5507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:40:50,558 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:40:50,558 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 305 of 339 [2021-06-11 09:40:50,558 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:42:30,674 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2021-06-11 09:42:30,759 INFO L129 PetriNetUnfolder]: 638979/738307 cut-off events. [2021-06-11 09:42:30,759 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:42:35,995 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1475637 conditions, 738307 events. 638979/738307 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 28451. Compared 3492462 event pairs, 212993 based on Foata normal form. 1/734129 useless extension candidates. Maximal degree in co-relation 1475629. Up to 262145 conditions per place. [2021-06-11 09:42:38,247 INFO L132 encePairwiseOnDemand]: 322/339 looper letters, 135 selfloop transitions, 15 changer transitions 1/183 dead transitions. [2021-06-11 09:42:38,248 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 183 transitions, 716 flow [2021-06-11 09:42:38,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-11 09:42:38,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-06-11 09:42:38,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 5642 transitions. [2021-06-11 09:42:38,254 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9246148803670927 [2021-06-11 09:42:38,254 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 5642 transitions. [2021-06-11 09:42:38,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 5642 transitions. [2021-06-11 09:42:38,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:42:38,255 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 5642 transitions. [2021-06-11 09:42:38,261 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 313.44444444444446) internal successors, (5642), 18 states have internal predecessors, (5642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:42:38,265 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 339.0) internal successors, (6441), 19 states have internal predecessors, (6441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:42:38,266 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 339.0) internal successors, (6441), 19 states have internal predecessors, (6441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:42:38,266 INFO L185 Difference]: Start difference. First operand has 82 places, 49 transitions, 146 flow. Second operand 18 states and 5642 transitions. [2021-06-11 09:42:38,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 183 transitions, 716 flow [2021-06-11 09:42:38,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 183 transitions, 715 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-11 09:42:38,273 INFO L241 Difference]: Finished difference. Result has 114 places, 63 transitions, 264 flow [2021-06-11 09:42:38,273 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=264, PETRI_PLACES=114, PETRI_TRANSITIONS=63} [2021-06-11 09:42:38,273 INFO L343 CegarLoopForPetriNet]: 98 programPoint places, 16 predicate places. [2021-06-11 09:42:38,273 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:42:38,273 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 114 places, 63 transitions, 264 flow [2021-06-11 09:42:38,273 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 114 places, 63 transitions, 264 flow [2021-06-11 09:42:38,274 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 113 places, 63 transitions, 264 flow [2021-06-11 09:42:38,286 INFO L129 PetriNetUnfolder]: 0/239 cut-off events. [2021-06-11 09:42:38,287 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2021-06-11 09:42:38,287 INFO L84 FinitePrefix]: Finished finitePrefix Result has 376 conditions, 239 events. 0/239 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1300 event pairs, 0 based on Foata normal form. 0/213 useless extension candidates. Maximal degree in co-relation 0. Up to 16 conditions per place. [2021-06-11 09:42:38,288 INFO L151 LiptonReduction]: Number of co-enabled transitions 1082 [2021-06-11 09:42:38,290 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:42:38,290 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:42:38,290 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 17 [2021-06-11 09:42:38,290 INFO L480 AbstractCegarLoop]: Abstraction has has 113 places, 63 transitions, 264 flow [2021-06-11 09:42:38,291 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 305.94444444444446) internal successors, (5507), 18 states have internal predecessors, (5507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:42:38,291 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:42:38,291 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 09:42:38,291 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-06-11 09:42:38,291 INFO L428 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr14INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr15INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-06-11 09:42:38,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:42:38,291 INFO L82 PathProgramCache]: Analyzing trace with hash -1947470939, now seen corresponding path program 2 times [2021-06-11 09:42:38,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:42:38,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839546968] [2021-06-11 09:42:38,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:42:38,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:42:38,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:42:38,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:42:38,347 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:42:38,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:42:38,351 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:42:38,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 09:42:38,358 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 09:42:38,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 09:42:38,368 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-11 09:42:38,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-11 09:42:38,381 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-11 09:42:38,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-11 09:42:38,399 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 09:42:38,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 09:42:38,422 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-06-11 09:42:38,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-06-11 09:42:38,452 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-06-11 09:42:38,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-06-11 09:42:38,491 INFO L142 QuantifierPusher]: treesize reduction 63, result has 52.3 percent of original size [2021-06-11 09:42:38,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-06-11 09:42:38,542 INFO L142 QuantifierPusher]: treesize reduction 72, result has 51.7 percent of original size [2021-06-11 09:42:38,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-06-11 09:42:38,592 INFO L142 QuantifierPusher]: treesize reduction 81, result has 51.2 percent of original size [2021-06-11 09:42:38,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-06-11 09:42:38,651 INFO L142 QuantifierPusher]: treesize reduction 90, result has 50.8 percent of original size [2021-06-11 09:42:38,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 93 [2021-06-11 09:42:38,714 INFO L142 QuantifierPusher]: treesize reduction 99, result has 50.5 percent of original size [2021-06-11 09:42:38,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-06-11 09:42:38,800 INFO L142 QuantifierPusher]: treesize reduction 108, result has 50.2 percent of original size [2021-06-11 09:42:38,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 109 [2021-06-11 09:42:38,888 INFO L142 QuantifierPusher]: treesize reduction 126, result has 48.6 percent of original size [2021-06-11 09:42:38,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-06-11 09:42:38,982 INFO L142 QuantifierPusher]: treesize reduction 135, result has 47.3 percent of original size [2021-06-11 09:42:38,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 121 [2021-06-11 09:42:39,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:42:39,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839546968] [2021-06-11 09:42:39,059 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:42:39,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-11 09:42:39,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613442145] [2021-06-11 09:42:39,059 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-11 09:42:39,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:42:39,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-11 09:42:39,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2021-06-11 09:42:39,062 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 305 out of 339 [2021-06-11 09:42:39,064 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 63 transitions, 264 flow. Second operand has 18 states, 18 states have (on average 305.94444444444446) internal successors, (5507), 18 states have internal predecessors, (5507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:42:39,064 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:42:39,064 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 305 of 339 [2021-06-11 09:42:39,064 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand