/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-RepeatedSemanticLbeWithDisjunctivePredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/mcr/example_14.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-26 13:28:32,711 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-26 13:28:32,714 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-26 13:28:32,751 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-26 13:28:32,752 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-26 13:28:32,755 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-26 13:28:32,757 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-26 13:28:32,763 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-26 13:28:32,765 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-26 13:28:32,769 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-26 13:28:32,770 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-26 13:28:32,771 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-26 13:28:32,772 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-26 13:28:32,774 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-26 13:28:32,775 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-26 13:28:32,776 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-26 13:28:32,778 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-26 13:28:32,779 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-26 13:28:32,782 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-26 13:28:32,789 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-26 13:28:32,791 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-26 13:28:32,792 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-26 13:28:32,794 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-26 13:28:32,795 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-26 13:28:32,801 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-26 13:28:32,801 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-26 13:28:32,802 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-26 13:28:32,803 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-26 13:28:32,803 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-26 13:28:32,804 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-26 13:28:32,804 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-26 13:28:32,805 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-26 13:28:32,807 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-26 13:28:32,807 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-26 13:28:32,808 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-26 13:28:32,808 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-26 13:28:32,809 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-26 13:28:32,809 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-26 13:28:32,809 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-26 13:28:32,810 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-26 13:28:32,810 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-26 13:28:32,811 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-RepeatedSemanticLbeWithDisjunctivePredicates.epf [2021-03-26 13:28:32,846 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-26 13:28:32,847 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-26 13:28:32,850 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-26 13:28:32,850 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-26 13:28:32,850 INFO L138 SettingsManager]: * Use SBE=true [2021-03-26 13:28:32,850 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-26 13:28:32,851 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-26 13:28:32,851 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-26 13:28:32,851 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-26 13:28:32,851 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-26 13:28:32,852 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-26 13:28:32,853 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-26 13:28:32,853 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-26 13:28:32,853 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-26 13:28:32,853 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-26 13:28:32,853 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-26 13:28:32,853 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-26 13:28:32,854 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-26 13:28:32,854 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-26 13:28:32,854 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-26 13:28:32,854 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-26 13:28:32,854 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-26 13:28:32,855 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-26 13:28:32,855 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-26 13:28:32,855 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-26 13:28:32,855 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-26 13:28:32,855 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-26 13:28:32,855 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES_DISJUNCTIVE [2021-03-26 13:28:32,856 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-26 13:28:32,856 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-26 13:28:32,856 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-26 13:28:33,190 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-26 13:28:33,208 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-26 13:28:33,210 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-26 13:28:33,211 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-26 13:28:33,212 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-26 13:28:33,213 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_14.bpl [2021-03-26 13:28:33,213 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_14.bpl' [2021-03-26 13:28:33,245 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-26 13:28:33,247 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-26 13:28:33,248 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-26 13:28:33,248 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-26 13:28:33,248 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-26 13:28:33,263 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 01:28:33" (1/1) ... [2021-03-26 13:28:33,270 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 01:28:33" (1/1) ... [2021-03-26 13:28:33,277 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-26 13:28:33,280 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-26 13:28:33,280 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-26 13:28:33,280 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-26 13:28:33,287 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 01:28:33" (1/1) ... [2021-03-26 13:28:33,288 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 01:28:33" (1/1) ... [2021-03-26 13:28:33,289 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 01:28:33" (1/1) ... [2021-03-26 13:28:33,290 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 01:28:33" (1/1) ... [2021-03-26 13:28:33,295 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 01:28:33" (1/1) ... [2021-03-26 13:28:33,296 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 01:28:33" (1/1) ... [2021-03-26 13:28:33,297 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 01:28:33" (1/1) ... [2021-03-26 13:28:33,302 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-26 13:28:33,302 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-26 13:28:33,303 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-26 13:28:33,303 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-26 13:28:33,304 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 01:28:33" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-26 13:28:33,369 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2021-03-26 13:28:33,370 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2021-03-26 13:28:33,371 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2021-03-26 13:28:33,371 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2021-03-26 13:28:33,371 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2021-03-26 13:28:33,371 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2021-03-26 13:28:33,372 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2021-03-26 13:28:33,372 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2021-03-26 13:28:33,372 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2021-03-26 13:28:33,372 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2021-03-26 13:28:33,372 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2021-03-26 13:28:33,372 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2021-03-26 13:28:33,372 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2021-03-26 13:28:33,373 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2021-03-26 13:28:33,373 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2021-03-26 13:28:33,373 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_9 given in one single declaration [2021-03-26 13:28:33,373 INFO L130 BoogieDeclarations]: Found specification of procedure set_9 [2021-03-26 13:28:33,374 INFO L138 BoogieDeclarations]: Found implementation of procedure set_9 [2021-03-26 13:28:33,375 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-26 13:28:33,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-26 13:28:33,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-26 13:28:33,376 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_12 given in one single declaration [2021-03-26 13:28:33,376 INFO L130 BoogieDeclarations]: Found specification of procedure set_12 [2021-03-26 13:28:33,376 INFO L138 BoogieDeclarations]: Found implementation of procedure set_12 [2021-03-26 13:28:33,377 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_5 given in one single declaration [2021-03-26 13:28:33,377 INFO L130 BoogieDeclarations]: Found specification of procedure set_5 [2021-03-26 13:28:33,378 INFO L138 BoogieDeclarations]: Found implementation of procedure set_5 [2021-03-26 13:28:33,378 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_13 given in one single declaration [2021-03-26 13:28:33,378 INFO L130 BoogieDeclarations]: Found specification of procedure set_13 [2021-03-26 13:28:33,378 INFO L138 BoogieDeclarations]: Found implementation of procedure set_13 [2021-03-26 13:28:33,378 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_6 given in one single declaration [2021-03-26 13:28:33,378 INFO L130 BoogieDeclarations]: Found specification of procedure set_6 [2021-03-26 13:28:33,378 INFO L138 BoogieDeclarations]: Found implementation of procedure set_6 [2021-03-26 13:28:33,379 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_10 given in one single declaration [2021-03-26 13:28:33,379 INFO L130 BoogieDeclarations]: Found specification of procedure set_10 [2021-03-26 13:28:33,379 INFO L138 BoogieDeclarations]: Found implementation of procedure set_10 [2021-03-26 13:28:33,379 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_7 given in one single declaration [2021-03-26 13:28:33,379 INFO L130 BoogieDeclarations]: Found specification of procedure set_7 [2021-03-26 13:28:33,380 INFO L138 BoogieDeclarations]: Found implementation of procedure set_7 [2021-03-26 13:28:33,380 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_11 given in one single declaration [2021-03-26 13:28:33,380 INFO L130 BoogieDeclarations]: Found specification of procedure set_11 [2021-03-26 13:28:33,380 INFO L138 BoogieDeclarations]: Found implementation of procedure set_11 [2021-03-26 13:28:33,380 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_8 given in one single declaration [2021-03-26 13:28:33,380 INFO L130 BoogieDeclarations]: Found specification of procedure set_8 [2021-03-26 13:28:33,380 INFO L138 BoogieDeclarations]: Found implementation of procedure set_8 [2021-03-26 13:28:33,381 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-26 13:28:33,563 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-26 13:28:33,563 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-26 13:28:33,564 INFO L202 PluginConnector]: Adding new model example_14.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 01:28:33 BoogieIcfgContainer [2021-03-26 13:28:33,564 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-26 13:28:33,566 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-26 13:28:33,566 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-26 13:28:33,568 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-26 13:28:33,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 01:28:33" (1/2) ... [2021-03-26 13:28:33,569 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@760557ce and model type example_14.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.03 01:28:33, skipping insertion in model container [2021-03-26 13:28:33,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_14.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 01:28:33" (2/2) ... [2021-03-26 13:28:33,570 INFO L111 eAbstractionObserver]: Analyzing ICFG example_14.bpl [2021-03-26 13:28:33,575 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-26 13:28:33,578 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-26 13:28:33,579 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-26 13:28:33,866 INFO L149 ThreadInstanceAdder]: Constructed 196 joinOtherThreadTransitions. [2021-03-26 13:28:33,882 INFO L253 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2021-03-26 13:28:33,902 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 13:28:33,902 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 13:28:33,902 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 13:28:33,902 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 13:28:33,903 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 13:28:33,903 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 13:28:33,903 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 13:28:33,903 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 13:28:33,918 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 116 places, 255 transitions, 1168 flow [2021-03-26 13:28:41,978 INFO L129 PetriNetUnfolder]: 98305/114733 cut-off events. [2021-03-26 13:28:41,979 INFO L130 PetriNetUnfolder]: For 114688/114688 co-relation queries the response was YES. [2021-03-26 13:28:42,788 INFO L84 FinitePrefix]: Finished finitePrefix Result has 229464 conditions, 114733 events. 98305/114733 cut-off events. For 114688/114688 co-relation queries the response was YES. Maximal size of possible extension queue 3628. Compared 465637 event pairs, 0 based on Foata normal form. 0/114732 useless extension candidates. Maximal degree in co-relation 106563. Up to 24024 conditions per place. [2021-03-26 13:28:42,789 INFO L82 GeneralOperation]: Start removeDead. Operand has 116 places, 255 transitions, 1168 flow [2021-03-26 13:28:43,715 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 100 places, 239 transitions, 1108 flow [2021-03-26 13:28:43,717 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:28:43,728 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 100 places, 239 transitions, 1108 flow [2021-03-26 13:28:43,730 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 100 places, 239 transitions, 1108 flow [2021-03-26 13:28:43,732 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 100 places, 239 transitions, 1108 flow [2021-03-26 13:28:50,476 INFO L129 PetriNetUnfolder]: 98305/114731 cut-off events. [2021-03-26 13:28:50,476 INFO L130 PetriNetUnfolder]: For 114688/114688 co-relation queries the response was YES. [2021-03-26 13:28:51,180 INFO L84 FinitePrefix]: Finished finitePrefix Result has 229462 conditions, 114731 events. 98305/114731 cut-off events. For 114688/114688 co-relation queries the response was YES. Maximal size of possible extension queue 3628. Compared 480869 event pairs, 0 based on Foata normal form. 0/114731 useless extension candidates. Maximal degree in co-relation 106563. Up to 24024 conditions per place. [2021-03-26 13:28:53,608 INFO L142 LiptonReduction]: Number of co-enabled transitions 10556 [2021-03-26 13:28:54,048 INFO L154 LiptonReduction]: Checked pairs total: 2821 [2021-03-26 13:28:54,048 INFO L156 LiptonReduction]: Total number of compositions: 14 [2021-03-26 13:28:54,053 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 10337 [2021-03-26 13:28:59,748 INFO L129 PetriNetUnfolder]: 98305/114716 cut-off events. [2021-03-26 13:28:59,748 INFO L130 PetriNetUnfolder]: For 114688/114688 co-relation queries the response was YES. [2021-03-26 13:28:59,749 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:28:59,749 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] [2021-03-26 13:28:59,749 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-26 13:28:59,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:28:59,753 INFO L82 PathProgramCache]: Analyzing trace with hash 1070435327, now seen corresponding path program 1 times [2021-03-26 13:28:59,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:28:59,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756554539] [2021-03-26 13:28:59,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:28:59,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:28:59,869 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:28:59,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:28:59,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:28:59,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:28:59,886 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:28:59,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:28:59,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:28:59,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756554539] [2021-03-26 13:28:59,889 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:28:59,890 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 13:28:59,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940736444] [2021-03-26 13:28:59,897 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 13:28:59,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:28:59,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 13:28:59,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 13:28:59,916 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 269 [2021-03-26 13:28:59,928 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 225 transitions, 1080 flow. Second operand has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:28:59,929 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:28:59,929 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 269 [2021-03-26 13:28:59,930 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:29:08,174 INFO L129 PetriNetUnfolder]: 94418/110452 cut-off events. [2021-03-26 13:29:08,174 INFO L130 PetriNetUnfolder]: For 127186/127186 co-relation queries the response was YES. [2021-03-26 13:29:08,748 INFO L84 FinitePrefix]: Finished finitePrefix Result has 228734 conditions, 110452 events. 94418/110452 cut-off events. For 127186/127186 co-relation queries the response was YES. Maximal size of possible extension queue 3628. Compared 540288 event pairs, 0 based on Foata normal form. 378/110830 useless extension candidates. Maximal degree in co-relation 108761. Up to 24024 conditions per place. [2021-03-26 13:29:09,295 INFO L132 encePairwiseOnDemand]: 264/269 looper letters, 10 selfloop transitions, 1 changer transitions 0/221 dead transitions. [2021-03-26 13:29:09,295 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 221 transitions, 1082 flow [2021-03-26 13:29:09,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 13:29:09,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 13:29:09,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 777 transitions. [2021-03-26 13:29:09,308 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9628252788104089 [2021-03-26 13:29:09,309 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 777 transitions. [2021-03-26 13:29:09,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 777 transitions. [2021-03-26 13:29:09,311 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:29:09,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 777 transitions. [2021-03-26 13:29:09,316 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 259.0) internal successors, (777), 3 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:29:09,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:29:09,322 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:29:09,323 INFO L185 Difference]: Start difference. First operand has 86 places, 225 transitions, 1080 flow. Second operand 3 states and 777 transitions. [2021-03-26 13:29:09,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 221 transitions, 1082 flow [2021-03-26 13:29:10,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 221 transitions, 670 flow, removed 0 selfloop flow, removed 28 redundant places. [2021-03-26 13:29:10,577 INFO L241 Difference]: Finished difference. Result has 60 places, 221 transitions, 650 flow [2021-03-26 13:29:10,578 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=648, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=650, PETRI_PLACES=60, PETRI_TRANSITIONS=221} [2021-03-26 13:29:10,579 INFO L343 CegarLoopForPetriNet]: 86 programPoint places, -26 predicate places. [2021-03-26 13:29:10,579 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:29:10,579 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 60 places, 221 transitions, 650 flow [2021-03-26 13:29:10,580 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 60 places, 221 transitions, 650 flow [2021-03-26 13:29:10,581 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 60 places, 221 transitions, 650 flow [2021-03-26 13:29:14,289 INFO L129 PetriNetUnfolder]: 94418/110452 cut-off events. [2021-03-26 13:29:14,289 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 13:29:14,554 INFO L84 FinitePrefix]: Finished finitePrefix Result has 110469 conditions, 110452 events. 94418/110452 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3628. Compared 460144 event pairs, 0 based on Foata normal form. 0/110452 useless extension candidates. Maximal degree in co-relation 110456. Up to 24024 conditions per place. [2021-03-26 13:29:15,702 INFO L142 LiptonReduction]: Number of co-enabled transitions 4992 [2021-03-26 13:29:15,728 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:29:15,728 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:29:15,728 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 5149 [2021-03-26 13:29:15,729 INFO L480 AbstractCegarLoop]: Abstraction has has 60 places, 221 transitions, 650 flow [2021-03-26 13:29:15,730 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:29:15,730 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:29:15,730 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] [2021-03-26 13:29:15,730 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-26 13:29:15,731 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-26 13:29:15,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:29:15,731 INFO L82 PathProgramCache]: Analyzing trace with hash 69320485, now seen corresponding path program 1 times [2021-03-26 13:29:15,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:29:15,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367619397] [2021-03-26 13:29:15,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:29:15,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:29:15,754 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:29:15,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:29:15,755 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:29:15,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:29:15,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:29:15,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:29:15,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:29:15,759 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367619397] [2021-03-26 13:29:15,759 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:29:15,759 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 13:29:15,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506834948] [2021-03-26 13:29:15,760 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 13:29:15,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:29:15,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 13:29:15,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 13:29:15,762 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 269 [2021-03-26 13:29:15,763 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 221 transitions, 650 flow. Second operand has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:29:15,763 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:29:15,763 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 269 [2021-03-26 13:29:15,763 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:29:17,893 INFO L129 PetriNetUnfolder]: 43300/51599 cut-off events. [2021-03-26 13:29:17,893 INFO L130 PetriNetUnfolder]: For 7893/7893 co-relation queries the response was YES. [2021-03-26 13:29:18,003 INFO L84 FinitePrefix]: Finished finitePrefix Result has 51996 conditions, 51599 events. 43300/51599 cut-off events. For 7893/7893 co-relation queries the response was YES. Maximal size of possible extension queue 1912. Compared 251982 event pairs, 0 based on Foata normal form. 7515/59114 useless extension candidates. Maximal degree in co-relation 51982. Up to 12012 conditions per place. [2021-03-26 13:29:18,159 INFO L132 encePairwiseOnDemand]: 258/269 looper letters, 4 selfloop transitions, 1 changer transitions 0/211 dead transitions. [2021-03-26 13:29:18,159 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 211 transitions, 630 flow [2021-03-26 13:29:18,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 13:29:18,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 13:29:18,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 777 transitions. [2021-03-26 13:29:18,162 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9628252788104089 [2021-03-26 13:29:18,162 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 777 transitions. [2021-03-26 13:29:18,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 777 transitions. [2021-03-26 13:29:18,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:29:18,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 777 transitions. [2021-03-26 13:29:18,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 259.0) internal successors, (777), 3 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:29:18,166 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:29:18,166 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:29:18,166 INFO L185 Difference]: Start difference. First operand has 60 places, 221 transitions, 650 flow. Second operand 3 states and 777 transitions. [2021-03-26 13:29:18,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 211 transitions, 630 flow [2021-03-26 13:29:18,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 211 transitions, 629 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 13:29:18,180 INFO L241 Difference]: Finished difference. Result has 61 places, 211 transitions, 621 flow [2021-03-26 13:29:18,180 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=619, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=621, PETRI_PLACES=61, PETRI_TRANSITIONS=211} [2021-03-26 13:29:18,181 INFO L343 CegarLoopForPetriNet]: 86 programPoint places, -25 predicate places. [2021-03-26 13:29:18,181 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:29:18,181 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 211 transitions, 621 flow [2021-03-26 13:29:18,181 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 61 places, 211 transitions, 621 flow [2021-03-26 13:29:18,182 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 61 places, 211 transitions, 621 flow [2021-03-26 13:29:19,747 INFO L129 PetriNetUnfolder]: 43300/51599 cut-off events. [2021-03-26 13:29:19,748 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 13:29:19,889 INFO L84 FinitePrefix]: Finished finitePrefix Result has 51617 conditions, 51599 events. 43300/51599 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1912. Compared 214155 event pairs, 0 based on Foata normal form. 0/51599 useless extension candidates. Maximal degree in co-relation 51604. Up to 12012 conditions per place. [2021-03-26 13:29:20,441 INFO L142 LiptonReduction]: Number of co-enabled transitions 4732 [2021-03-26 13:29:20,457 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:29:20,457 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:29:20,457 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2276 [2021-03-26 13:29:20,458 INFO L480 AbstractCegarLoop]: Abstraction has has 61 places, 211 transitions, 621 flow [2021-03-26 13:29:20,459 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:29:20,459 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:29:20,459 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] [2021-03-26 13:29:20,459 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-26 13:29:20,459 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-26 13:29:20,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:29:20,460 INFO L82 PathProgramCache]: Analyzing trace with hash 222589655, now seen corresponding path program 1 times [2021-03-26 13:29:20,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:29:20,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801815352] [2021-03-26 13:29:20,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:29:20,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:29:20,482 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:29:20,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:29:20,484 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:29:20,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:29:20,486 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:29:20,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:29:20,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:29:20,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801815352] [2021-03-26 13:29:20,488 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:29:20,488 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 13:29:20,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958022637] [2021-03-26 13:29:20,488 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 13:29:20,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:29:20,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 13:29:20,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 13:29:20,490 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 269 [2021-03-26 13:29:20,491 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 211 transitions, 621 flow. Second operand has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:29:20,491 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:29:20,491 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 269 [2021-03-26 13:29:20,491 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:29:22,076 INFO L129 PetriNetUnfolder]: 37404/44976 cut-off events. [2021-03-26 13:29:22,077 INFO L130 PetriNetUnfolder]: For 3943/3943 co-relation queries the response was YES. [2021-03-26 13:29:22,201 INFO L84 FinitePrefix]: Finished finitePrefix Result has 48377 conditions, 44976 events. 37404/44976 cut-off events. For 3943/3943 co-relation queries the response was YES. Maximal size of possible extension queue 1912. Compared 220956 event pairs, 0 based on Foata normal form. 562/45538 useless extension candidates. Maximal degree in co-relation 48363. Up to 12012 conditions per place. [2021-03-26 13:29:22,360 INFO L132 encePairwiseOnDemand]: 263/269 looper letters, 9 selfloop transitions, 1 changer transitions 0/206 dead transitions. [2021-03-26 13:29:22,360 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 206 transitions, 626 flow [2021-03-26 13:29:22,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 13:29:22,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 13:29:22,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 777 transitions. [2021-03-26 13:29:22,363 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9628252788104089 [2021-03-26 13:29:22,363 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 777 transitions. [2021-03-26 13:29:22,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 777 transitions. [2021-03-26 13:29:22,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:29:22,364 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 777 transitions. [2021-03-26 13:29:22,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 259.0) internal successors, (777), 3 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:29:22,367 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:29:22,367 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:29:22,368 INFO L185 Difference]: Start difference. First operand has 61 places, 211 transitions, 621 flow. Second operand 3 states and 777 transitions. [2021-03-26 13:29:22,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 206 transitions, 626 flow [2021-03-26 13:29:22,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 206 transitions, 625 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 13:29:22,378 INFO L241 Difference]: Finished difference. Result has 62 places, 206 transitions, 607 flow [2021-03-26 13:29:22,379 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=605, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=607, PETRI_PLACES=62, PETRI_TRANSITIONS=206} [2021-03-26 13:29:22,380 INFO L343 CegarLoopForPetriNet]: 86 programPoint places, -24 predicate places. [2021-03-26 13:29:22,380 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:29:22,380 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 62 places, 206 transitions, 607 flow [2021-03-26 13:29:22,381 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 62 places, 206 transitions, 607 flow [2021-03-26 13:29:22,382 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 62 places, 206 transitions, 607 flow [2021-03-26 13:29:23,904 INFO L129 PetriNetUnfolder]: 37404/44976 cut-off events. [2021-03-26 13:29:23,905 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 13:29:24,016 INFO L84 FinitePrefix]: Finished finitePrefix Result has 44995 conditions, 44976 events. 37404/44976 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1912. Compared 192863 event pairs, 0 based on Foata normal form. 0/44976 useless extension candidates. Maximal degree in co-relation 44982. Up to 12012 conditions per place. [2021-03-26 13:29:24,250 INFO L142 LiptonReduction]: Number of co-enabled transitions 4602 [2021-03-26 13:29:24,268 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:29:24,268 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:29:24,268 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1888 [2021-03-26 13:29:24,269 INFO L480 AbstractCegarLoop]: Abstraction has has 62 places, 206 transitions, 607 flow [2021-03-26 13:29:24,270 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:29:24,270 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:29:24,270 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] [2021-03-26 13:29:24,270 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-26 13:29:24,270 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-26 13:29:24,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:29:24,271 INFO L82 PathProgramCache]: Analyzing trace with hash -909626815, now seen corresponding path program 1 times [2021-03-26 13:29:24,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:29:24,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784476592] [2021-03-26 13:29:24,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:29:24,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:29:24,315 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:29:24,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:29:24,317 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:29:24,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:29:24,320 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:29:24,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:29:24,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:29:24,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784476592] [2021-03-26 13:29:24,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:29:24,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 13:29:24,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614237032] [2021-03-26 13:29:24,324 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 13:29:24,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:29:24,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 13:29:24,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 13:29:24,325 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 269 [2021-03-26 13:29:24,326 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 206 transitions, 607 flow. Second operand has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:29:24,326 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:29:24,326 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 269 [2021-03-26 13:29:24,326 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:29:26,131 INFO L129 PetriNetUnfolder]: 36944/44460 cut-off events. [2021-03-26 13:29:26,132 INFO L130 PetriNetUnfolder]: For 3437/3437 co-relation queries the response was YES. [2021-03-26 13:29:26,237 INFO L84 FinitePrefix]: Finished finitePrefix Result has 47862 conditions, 44460 events. 36944/44460 cut-off events. For 3437/3437 co-relation queries the response was YES. Maximal size of possible extension queue 1912. Compared 221464 event pairs, 0 based on Foata normal form. 56/44516 useless extension candidates. Maximal degree in co-relation 47847. Up to 12012 conditions per place. [2021-03-26 13:29:26,399 INFO L132 encePairwiseOnDemand]: 265/269 looper letters, 11 selfloop transitions, 1 changer transitions 0/203 dead transitions. [2021-03-26 13:29:26,400 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 203 transitions, 622 flow [2021-03-26 13:29:26,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 13:29:26,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 13:29:26,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 777 transitions. [2021-03-26 13:29:26,402 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9628252788104089 [2021-03-26 13:29:26,402 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 777 transitions. [2021-03-26 13:29:26,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 777 transitions. [2021-03-26 13:29:26,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:29:26,403 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 777 transitions. [2021-03-26 13:29:26,404 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 259.0) internal successors, (777), 3 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:29:26,406 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:29:26,406 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:29:26,406 INFO L185 Difference]: Start difference. First operand has 62 places, 206 transitions, 607 flow. Second operand 3 states and 777 transitions. [2021-03-26 13:29:26,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 203 transitions, 622 flow [2021-03-26 13:29:26,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 203 transitions, 621 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 13:29:26,412 INFO L241 Difference]: Finished difference. Result has 63 places, 203 transitions, 599 flow [2021-03-26 13:29:26,412 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=597, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=599, PETRI_PLACES=63, PETRI_TRANSITIONS=203} [2021-03-26 13:29:26,412 INFO L343 CegarLoopForPetriNet]: 86 programPoint places, -23 predicate places. [2021-03-26 13:29:26,413 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:29:26,413 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 63 places, 203 transitions, 599 flow [2021-03-26 13:29:26,413 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 63 places, 203 transitions, 599 flow [2021-03-26 13:29:26,414 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 63 places, 203 transitions, 599 flow [2021-03-26 13:29:27,801 INFO L129 PetriNetUnfolder]: 36944/44460 cut-off events. [2021-03-26 13:29:27,801 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 13:29:27,934 INFO L84 FinitePrefix]: Finished finitePrefix Result has 44480 conditions, 44460 events. 36944/44460 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1951. Compared 190691 event pairs, 0 based on Foata normal form. 0/44460 useless extension candidates. Maximal degree in co-relation 44469. Up to 12012 conditions per place. [2021-03-26 13:29:28,223 INFO L142 LiptonReduction]: Number of co-enabled transitions 4524 [2021-03-26 13:29:28,233 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:29:28,233 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:29:28,233 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1820 [2021-03-26 13:29:28,234 INFO L480 AbstractCegarLoop]: Abstraction has has 63 places, 203 transitions, 599 flow [2021-03-26 13:29:28,234 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:29:28,234 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:29:28,235 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] [2021-03-26 13:29:28,235 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-26 13:29:28,235 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-26 13:29:28,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:29:28,235 INFO L82 PathProgramCache]: Analyzing trace with hash -1579367267, now seen corresponding path program 1 times [2021-03-26 13:29:28,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:29:28,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340092250] [2021-03-26 13:29:28,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:29:28,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:29:28,252 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:29:28,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:29:28,253 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:29:28,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:29:28,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:29:28,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:29:28,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:29:28,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340092250] [2021-03-26 13:29:28,257 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:29:28,257 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 13:29:28,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303128939] [2021-03-26 13:29:28,257 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 13:29:28,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:29:28,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 13:29:28,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 13:29:28,259 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 269 [2021-03-26 13:29:28,259 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 203 transitions, 599 flow. Second operand has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:29:28,260 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:29:28,260 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 269 [2021-03-26 13:29:28,260 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:29:29,100 INFO L129 PetriNetUnfolder]: 18413/22925 cut-off events. [2021-03-26 13:29:29,100 INFO L130 PetriNetUnfolder]: For 3391/3391 co-relation queries the response was YES. [2021-03-26 13:29:29,169 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23820 conditions, 22925 events. 18413/22925 cut-off events. For 3391/3391 co-relation queries the response was YES. Maximal size of possible extension queue 988. Compared 116085 event pairs, 0 based on Foata normal form. 2518/25443 useless extension candidates. Maximal degree in co-relation 23808. Up to 5544 conditions per place. [2021-03-26 13:29:29,230 INFO L132 encePairwiseOnDemand]: 260/269 looper letters, 6 selfloop transitions, 1 changer transitions 0/195 dead transitions. [2021-03-26 13:29:29,231 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 195 transitions, 589 flow [2021-03-26 13:29:29,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 13:29:29,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 13:29:29,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 777 transitions. [2021-03-26 13:29:29,233 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9628252788104089 [2021-03-26 13:29:29,233 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 777 transitions. [2021-03-26 13:29:29,233 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 777 transitions. [2021-03-26 13:29:29,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:29:29,233 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 777 transitions. [2021-03-26 13:29:29,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 259.0) internal successors, (777), 3 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:29:29,237 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:29:29,237 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:29:29,237 INFO L185 Difference]: Start difference. First operand has 63 places, 203 transitions, 599 flow. Second operand 3 states and 777 transitions. [2021-03-26 13:29:29,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 195 transitions, 589 flow [2021-03-26 13:29:29,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 195 transitions, 588 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 13:29:29,242 INFO L241 Difference]: Finished difference. Result has 64 places, 195 transitions, 576 flow [2021-03-26 13:29:29,243 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=574, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=576, PETRI_PLACES=64, PETRI_TRANSITIONS=195} [2021-03-26 13:29:29,243 INFO L343 CegarLoopForPetriNet]: 86 programPoint places, -22 predicate places. [2021-03-26 13:29:29,243 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:29:29,243 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 64 places, 195 transitions, 576 flow [2021-03-26 13:29:29,243 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 64 places, 195 transitions, 576 flow [2021-03-26 13:29:29,244 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 64 places, 195 transitions, 576 flow [2021-03-26 13:29:29,879 INFO L129 PetriNetUnfolder]: 18413/22925 cut-off events. [2021-03-26 13:29:29,879 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 13:29:29,922 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22946 conditions, 22925 events. 18413/22925 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1016. Compared 99985 event pairs, 0 based on Foata normal form. 0/22925 useless extension candidates. Maximal degree in co-relation 22935. Up to 5544 conditions per place. [2021-03-26 13:29:30,035 INFO L142 LiptonReduction]: Number of co-enabled transitions 4316 [2021-03-26 13:29:30,044 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:29:30,045 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:29:30,046 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 803 [2021-03-26 13:29:30,048 INFO L480 AbstractCegarLoop]: Abstraction has has 64 places, 195 transitions, 576 flow [2021-03-26 13:29:30,049 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:29:30,049 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:29:30,049 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] [2021-03-26 13:29:30,049 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-26 13:29:30,049 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-26 13:29:30,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:29:30,049 INFO L82 PathProgramCache]: Analyzing trace with hash 1559250705, now seen corresponding path program 1 times [2021-03-26 13:29:30,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:29:30,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993632581] [2021-03-26 13:29:30,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:29:30,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:29:30,066 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:29:30,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:29:30,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:29:30,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:29:30,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:29:30,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:29:30,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:29:30,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993632581] [2021-03-26 13:29:30,071 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:29:30,071 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 13:29:30,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245221260] [2021-03-26 13:29:30,071 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 13:29:30,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:29:30,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 13:29:30,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 13:29:30,073 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 269 [2021-03-26 13:29:30,073 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 195 transitions, 576 flow. Second operand has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:29:30,074 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:29:30,074 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 269 [2021-03-26 13:29:30,074 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:29:30,805 INFO L129 PetriNetUnfolder]: 18349/22852 cut-off events. [2021-03-26 13:29:30,805 INFO L130 PetriNetUnfolder]: For 1806/1806 co-relation queries the response was YES. [2021-03-26 13:29:30,841 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24672 conditions, 22852 events. 18349/22852 cut-off events. For 1806/1806 co-relation queries the response was YES. Maximal size of possible extension queue 988. Compared 114949 event pairs, 0 based on Foata normal form. 9/22861 useless extension candidates. Maximal degree in co-relation 24659. Up to 5544 conditions per place. [2021-03-26 13:29:30,897 INFO L132 encePairwiseOnDemand]: 266/269 looper letters, 12 selfloop transitions, 1 changer transitions 0/193 dead transitions. [2021-03-26 13:29:30,898 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 193 transitions, 596 flow [2021-03-26 13:29:30,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 13:29:30,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 13:29:30,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 777 transitions. [2021-03-26 13:29:30,899 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9628252788104089 [2021-03-26 13:29:30,899 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 777 transitions. [2021-03-26 13:29:30,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 777 transitions. [2021-03-26 13:29:30,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:29:30,900 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 777 transitions. [2021-03-26 13:29:30,901 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 259.0) internal successors, (777), 3 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:29:30,903 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:29:30,903 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:29:30,903 INFO L185 Difference]: Start difference. First operand has 64 places, 195 transitions, 576 flow. Second operand 3 states and 777 transitions. [2021-03-26 13:29:30,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 193 transitions, 596 flow [2021-03-26 13:29:30,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 193 transitions, 595 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 13:29:30,907 INFO L241 Difference]: Finished difference. Result has 65 places, 193 transitions, 571 flow [2021-03-26 13:29:30,907 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=569, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=571, PETRI_PLACES=65, PETRI_TRANSITIONS=193} [2021-03-26 13:29:30,908 INFO L343 CegarLoopForPetriNet]: 86 programPoint places, -21 predicate places. [2021-03-26 13:29:30,908 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:29:30,908 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 65 places, 193 transitions, 571 flow [2021-03-26 13:29:30,908 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 65 places, 193 transitions, 571 flow [2021-03-26 13:29:30,909 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 65 places, 193 transitions, 571 flow [2021-03-26 13:29:31,596 INFO L129 PetriNetUnfolder]: 18349/22852 cut-off events. [2021-03-26 13:29:31,596 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 13:29:31,647 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22874 conditions, 22852 events. 18349/22852 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1017. Compared 99552 event pairs, 0 based on Foata normal form. 0/22852 useless extension candidates. Maximal degree in co-relation 22865. Up to 5544 conditions per place. [2021-03-26 13:29:31,739 INFO L142 LiptonReduction]: Number of co-enabled transitions 4264 [2021-03-26 13:29:31,748 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:29:31,748 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:29:31,749 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 841 [2021-03-26 13:29:31,749 INFO L480 AbstractCegarLoop]: Abstraction has has 65 places, 193 transitions, 571 flow [2021-03-26 13:29:31,750 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:29:31,750 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:29:31,750 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:29:31,750 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-26 13:29:31,750 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-26 13:29:31,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:29:31,751 INFO L82 PathProgramCache]: Analyzing trace with hash -1245926739, now seen corresponding path program 1 times [2021-03-26 13:29:31,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:29:31,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319085622] [2021-03-26 13:29:31,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:29:31,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:29:31,766 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:29:31,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:29:31,767 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:29:31,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:29:31,770 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:29:31,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:29:31,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:29:31,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319085622] [2021-03-26 13:29:31,771 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:29:31,771 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 13:29:31,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274851195] [2021-03-26 13:29:31,771 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 13:29:31,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:29:31,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 13:29:31,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 13:29:31,772 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 269 [2021-03-26 13:29:31,773 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 193 transitions, 571 flow. Second operand has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:29:31,773 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:29:31,773 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 269 [2021-03-26 13:29:31,773 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:29:32,283 INFO L129 PetriNetUnfolder]: 13596/17307 cut-off events. [2021-03-26 13:29:32,283 INFO L130 PetriNetUnfolder]: For 1798/1798 co-relation queries the response was YES. [2021-03-26 13:29:32,321 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18666 conditions, 17307 events. 13596/17307 cut-off events. For 1798/1798 co-relation queries the response was YES. Maximal size of possible extension queue 814. Compared 87272 event pairs, 0 based on Foata normal form. 463/17770 useless extension candidates. Maximal degree in co-relation 18656. Up to 3960 conditions per place. [2021-03-26 13:29:32,367 INFO L132 encePairwiseOnDemand]: 262/269 looper letters, 8 selfloop transitions, 1 changer transitions 0/187 dead transitions. [2021-03-26 13:29:32,367 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 187 transitions, 571 flow [2021-03-26 13:29:32,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 13:29:32,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 13:29:32,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 777 transitions. [2021-03-26 13:29:32,369 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9628252788104089 [2021-03-26 13:29:32,369 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 777 transitions. [2021-03-26 13:29:32,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 777 transitions. [2021-03-26 13:29:32,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:29:32,369 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 777 transitions. [2021-03-26 13:29:32,371 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 259.0) internal successors, (777), 3 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:29:32,372 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:29:32,372 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:29:32,372 INFO L185 Difference]: Start difference. First operand has 65 places, 193 transitions, 571 flow. Second operand 3 states and 777 transitions. [2021-03-26 13:29:32,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 187 transitions, 571 flow [2021-03-26 13:29:32,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 187 transitions, 570 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 13:29:32,376 INFO L241 Difference]: Finished difference. Result has 66 places, 187 transitions, 554 flow [2021-03-26 13:29:32,377 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=552, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=554, PETRI_PLACES=66, PETRI_TRANSITIONS=187} [2021-03-26 13:29:32,377 INFO L343 CegarLoopForPetriNet]: 86 programPoint places, -20 predicate places. [2021-03-26 13:29:32,377 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:29:32,377 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 66 places, 187 transitions, 554 flow [2021-03-26 13:29:32,377 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 66 places, 187 transitions, 554 flow [2021-03-26 13:29:32,378 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 66 places, 187 transitions, 554 flow [2021-03-26 13:29:32,839 INFO L129 PetriNetUnfolder]: 13596/17307 cut-off events. [2021-03-26 13:29:32,839 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 13:29:32,876 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17330 conditions, 17307 events. 13596/17307 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 837. Compared 76981 event pairs, 0 based on Foata normal form. 0/17307 useless extension candidates. Maximal degree in co-relation 17321. Up to 3960 conditions per place. [2021-03-26 13:29:32,991 INFO L142 LiptonReduction]: Number of co-enabled transitions 4108 [2021-03-26 13:29:33,001 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:29:33,001 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:29:33,001 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 624 [2021-03-26 13:29:33,007 INFO L480 AbstractCegarLoop]: Abstraction has has 66 places, 187 transitions, 554 flow [2021-03-26 13:29:33,008 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:29:33,008 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:29:33,008 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] [2021-03-26 13:29:33,008 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-26 13:29:33,008 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-26 13:29:33,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:29:33,008 INFO L82 PathProgramCache]: Analyzing trace with hash -1838825821, now seen corresponding path program 1 times [2021-03-26 13:29:33,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:29:33,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892364969] [2021-03-26 13:29:33,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:29:33,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:29:33,030 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:29:33,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:29:33,031 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:29:33,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:29:33,033 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:29:33,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:29:33,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:29:33,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892364969] [2021-03-26 13:29:33,034 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:29:33,034 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 13:29:33,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408963579] [2021-03-26 13:29:33,035 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 13:29:33,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:29:33,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 13:29:33,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 13:29:33,036 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 269 [2021-03-26 13:29:33,037 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 187 transitions, 554 flow. Second operand has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:29:33,037 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:29:33,037 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 269 [2021-03-26 13:29:33,037 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:29:33,230 INFO L129 PetriNetUnfolder]: 4157/5613 cut-off events. [2021-03-26 13:29:33,231 INFO L130 PetriNetUnfolder]: For 1336/1336 co-relation queries the response was YES. [2021-03-26 13:29:33,244 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5730 conditions, 5613 events. 4157/5613 cut-off events. For 1336/1336 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 26968 event pairs, 0 based on Foata normal form. 1244/6857 useless extension candidates. Maximal degree in co-relation 5720. Up to 1320 conditions per place. [2021-03-26 13:29:33,260 INFO L132 encePairwiseOnDemand]: 257/269 looper letters, 3 selfloop transitions, 1 changer transitions 0/176 dead transitions. [2021-03-26 13:29:33,261 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 176 transitions, 529 flow [2021-03-26 13:29:33,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 13:29:33,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 13:29:33,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 777 transitions. [2021-03-26 13:29:33,263 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9628252788104089 [2021-03-26 13:29:33,263 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 777 transitions. [2021-03-26 13:29:33,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 777 transitions. [2021-03-26 13:29:33,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:29:33,263 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 777 transitions. [2021-03-26 13:29:33,264 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 259.0) internal successors, (777), 3 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:29:33,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:29:33,266 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:29:33,266 INFO L185 Difference]: Start difference. First operand has 66 places, 187 transitions, 554 flow. Second operand 3 states and 777 transitions. [2021-03-26 13:29:33,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 176 transitions, 529 flow [2021-03-26 13:29:33,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 176 transitions, 528 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 13:29:33,270 INFO L241 Difference]: Finished difference. Result has 67 places, 176 transitions, 522 flow [2021-03-26 13:29:33,270 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=522, PETRI_PLACES=67, PETRI_TRANSITIONS=176} [2021-03-26 13:29:33,270 INFO L343 CegarLoopForPetriNet]: 86 programPoint places, -19 predicate places. [2021-03-26 13:29:33,270 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:29:33,270 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 67 places, 176 transitions, 522 flow [2021-03-26 13:29:33,270 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 67 places, 176 transitions, 522 flow [2021-03-26 13:29:33,271 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 67 places, 176 transitions, 522 flow [2021-03-26 13:29:33,407 INFO L129 PetriNetUnfolder]: 4157/5613 cut-off events. [2021-03-26 13:29:33,407 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 13:29:33,416 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5637 conditions, 5613 events. 4157/5613 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 24210 event pairs, 0 based on Foata normal form. 0/5613 useless extension candidates. Maximal degree in co-relation 5628. Up to 1320 conditions per place. [2021-03-26 13:29:33,448 INFO L142 LiptonReduction]: Number of co-enabled transitions 3822 [2021-03-26 13:29:33,456 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:29:33,456 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:29:33,456 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 186 [2021-03-26 13:29:33,457 INFO L480 AbstractCegarLoop]: Abstraction has has 67 places, 176 transitions, 522 flow [2021-03-26 13:29:33,457 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:29:33,457 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:29:33,457 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] [2021-03-26 13:29:33,457 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-26 13:29:33,457 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-26 13:29:33,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:29:33,458 INFO L82 PathProgramCache]: Analyzing trace with hash 1476202047, now seen corresponding path program 1 times [2021-03-26 13:29:33,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:29:33,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165330923] [2021-03-26 13:29:33,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:29:33,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:29:33,471 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:29:33,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:29:33,472 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:29:33,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:29:33,475 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:29:33,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:29:33,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:29:33,476 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165330923] [2021-03-26 13:29:33,476 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:29:33,476 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 13:29:33,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7066121] [2021-03-26 13:29:33,476 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 13:29:33,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:29:33,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 13:29:33,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 13:29:33,478 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 269 [2021-03-26 13:29:33,478 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 176 transitions, 522 flow. Second operand has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:29:33,478 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:29:33,478 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 269 [2021-03-26 13:29:33,478 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:29:33,557 INFO L129 PetriNetUnfolder]: 1042/1539 cut-off events. [2021-03-26 13:29:33,557 INFO L130 PetriNetUnfolder]: For 468/468 co-relation queries the response was YES. [2021-03-26 13:29:33,560 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1566 conditions, 1539 events. 1042/1539 cut-off events. For 468/468 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 7109 event pairs, 0 based on Foata normal form. 467/2006 useless extension candidates. Maximal degree in co-relation 1556. Up to 360 conditions per place. [2021-03-26 13:29:33,564 INFO L132 encePairwiseOnDemand]: 255/269 looper letters, 1 selfloop transitions, 1 changer transitions 0/150 dead transitions. [2021-03-26 13:29:33,564 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 150 transitions, 448 flow [2021-03-26 13:29:33,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 13:29:33,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 13:29:33,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 777 transitions. [2021-03-26 13:29:33,565 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9628252788104089 [2021-03-26 13:29:33,566 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 777 transitions. [2021-03-26 13:29:33,566 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 777 transitions. [2021-03-26 13:29:33,566 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:29:33,566 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 777 transitions. [2021-03-26 13:29:33,567 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 259.0) internal successors, (777), 3 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:29:33,568 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:29:33,568 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:29:33,568 INFO L185 Difference]: Start difference. First operand has 67 places, 176 transitions, 522 flow. Second operand 3 states and 777 transitions. [2021-03-26 13:29:33,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 150 transitions, 448 flow [2021-03-26 13:29:33,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 150 transitions, 447 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 13:29:33,571 INFO L241 Difference]: Finished difference. Result has 68 places, 150 transitions, 445 flow [2021-03-26 13:29:33,571 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=443, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=445, PETRI_PLACES=68, PETRI_TRANSITIONS=150} [2021-03-26 13:29:33,572 INFO L343 CegarLoopForPetriNet]: 86 programPoint places, -18 predicate places. [2021-03-26 13:29:33,572 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:29:33,572 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 68 places, 150 transitions, 445 flow [2021-03-26 13:29:33,572 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 68 places, 150 transitions, 445 flow [2021-03-26 13:29:33,573 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 68 places, 150 transitions, 445 flow [2021-03-26 13:29:33,612 INFO L129 PetriNetUnfolder]: 1042/1539 cut-off events. [2021-03-26 13:29:33,613 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 13:29:33,615 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1564 conditions, 1539 events. 1042/1539 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 6196 event pairs, 0 based on Foata normal form. 0/1539 useless extension candidates. Maximal degree in co-relation 1555. Up to 360 conditions per place. [2021-03-26 13:29:33,622 INFO L142 LiptonReduction]: Number of co-enabled transitions 2688 [2021-03-26 13:29:33,631 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:29:33,631 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:29:33,631 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 59 [2021-03-26 13:29:33,632 INFO L480 AbstractCegarLoop]: Abstraction has has 68 places, 150 transitions, 445 flow [2021-03-26 13:29:33,632 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:29:33,632 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:29:33,633 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] [2021-03-26 13:29:33,633 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-26 13:29:33,633 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-26 13:29:33,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:29:33,633 INFO L82 PathProgramCache]: Analyzing trace with hash 794448179, now seen corresponding path program 1 times [2021-03-26 13:29:33,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:29:33,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200081460] [2021-03-26 13:29:33,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:29:33,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:29:33,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:29:33,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:29:33,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:29:33,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:29:33,666 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:29:33,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:29:33,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:29:33,667 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200081460] [2021-03-26 13:29:33,667 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:29:33,667 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 13:29:33,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060017251] [2021-03-26 13:29:33,668 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 13:29:33,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:29:33,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 13:29:33,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 13:29:33,672 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 269 [2021-03-26 13:29:33,673 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 150 transitions, 445 flow. Second operand has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:29:33,673 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:29:33,673 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 269 [2021-03-26 13:29:33,673 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:29:33,707 INFO L129 PetriNetUnfolder]: 249/455 cut-off events. [2021-03-26 13:29:33,707 INFO L130 PetriNetUnfolder]: For 143/143 co-relation queries the response was YES. [2021-03-26 13:29:33,708 INFO L84 FinitePrefix]: Finished finitePrefix Result has 495 conditions, 455 events. 249/455 cut-off events. For 143/143 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1698 event pairs, 0 based on Foata normal form. 130/585 useless extension candidates. Maximal degree in co-relation 485. Up to 84 conditions per place. [2021-03-26 13:29:33,709 INFO L132 encePairwiseOnDemand]: 259/269 looper letters, 4 selfloop transitions, 1 changer transitions 0/141 dead transitions. [2021-03-26 13:29:33,709 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 141 transitions, 428 flow [2021-03-26 13:29:33,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 13:29:33,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 13:29:33,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 776 transitions. [2021-03-26 13:29:33,711 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9615861214374225 [2021-03-26 13:29:33,711 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 776 transitions. [2021-03-26 13:29:33,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 776 transitions. [2021-03-26 13:29:33,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:29:33,712 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 776 transitions. [2021-03-26 13:29:33,713 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 258.6666666666667) internal successors, (776), 3 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:29:33,714 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:29:33,715 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:29:33,715 INFO L185 Difference]: Start difference. First operand has 68 places, 150 transitions, 445 flow. Second operand 3 states and 776 transitions. [2021-03-26 13:29:33,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 141 transitions, 428 flow [2021-03-26 13:29:33,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 141 transitions, 427 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 13:29:33,717 INFO L241 Difference]: Finished difference. Result has 69 places, 141 transitions, 419 flow [2021-03-26 13:29:33,718 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=419, PETRI_PLACES=69, PETRI_TRANSITIONS=141} [2021-03-26 13:29:33,719 INFO L343 CegarLoopForPetriNet]: 86 programPoint places, -17 predicate places. [2021-03-26 13:29:33,719 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:29:33,719 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 141 transitions, 419 flow [2021-03-26 13:29:33,719 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 141 transitions, 419 flow [2021-03-26 13:29:33,720 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 69 places, 141 transitions, 419 flow [2021-03-26 13:29:33,732 INFO L129 PetriNetUnfolder]: 249/455 cut-off events. [2021-03-26 13:29:33,733 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 13:29:33,733 INFO L84 FinitePrefix]: Finished finitePrefix Result has 481 conditions, 455 events. 249/455 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1598 event pairs, 0 based on Foata normal form. 0/455 useless extension candidates. Maximal degree in co-relation 472. Up to 84 conditions per place. [2021-03-26 13:29:33,735 INFO L142 LiptonReduction]: Number of co-enabled transitions 2130 [2021-03-26 13:29:33,740 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:29:33,740 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:29:33,740 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 21 [2021-03-26 13:29:33,741 INFO L480 AbstractCegarLoop]: Abstraction has has 69 places, 141 transitions, 419 flow [2021-03-26 13:29:33,741 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:29:33,741 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:29:33,741 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] [2021-03-26 13:29:33,741 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-26 13:29:33,742 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-26 13:29:33,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:29:33,742 INFO L82 PathProgramCache]: Analyzing trace with hash -1456333061, now seen corresponding path program 1 times [2021-03-26 13:29:33,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:29:33,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788096002] [2021-03-26 13:29:33,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:29:33,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:29:33,755 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:29:33,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:29:33,756 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:29:33,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:29:33,759 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:29:33,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:29:33,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:29:33,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788096002] [2021-03-26 13:29:33,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:29:33,760 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 13:29:33,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560861066] [2021-03-26 13:29:33,760 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 13:29:33,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:29:33,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 13:29:33,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 13:29:33,762 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 269 [2021-03-26 13:29:33,762 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 141 transitions, 419 flow. Second operand has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:29:33,763 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:29:33,763 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 269 [2021-03-26 13:29:33,763 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:29:33,788 INFO L129 PetriNetUnfolder]: 30/102 cut-off events. [2021-03-26 13:29:33,789 INFO L130 PetriNetUnfolder]: For 42/42 co-relation queries the response was YES. [2021-03-26 13:29:33,789 INFO L84 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 102 events. 30/102 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 200 event pairs, 0 based on Foata normal form. 41/143 useless extension candidates. Maximal degree in co-relation 121. Up to 14 conditions per place. [2021-03-26 13:29:33,789 INFO L132 encePairwiseOnDemand]: 256/269 looper letters, 1 selfloop transitions, 1 changer transitions 0/79 dead transitions. [2021-03-26 13:29:33,789 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 79 transitions, 237 flow [2021-03-26 13:29:33,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 13:29:33,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 13:29:33,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 776 transitions. [2021-03-26 13:29:33,791 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9615861214374225 [2021-03-26 13:29:33,792 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 776 transitions. [2021-03-26 13:29:33,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 776 transitions. [2021-03-26 13:29:33,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:29:33,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 776 transitions. [2021-03-26 13:29:33,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 258.6666666666667) internal successors, (776), 3 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:29:33,794 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:29:33,795 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:29:33,795 INFO L185 Difference]: Start difference. First operand has 69 places, 141 transitions, 419 flow. Second operand 3 states and 776 transitions. [2021-03-26 13:29:33,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 79 transitions, 237 flow [2021-03-26 13:29:33,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 79 transitions, 236 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 13:29:33,796 INFO L241 Difference]: Finished difference. Result has 70 places, 79 transitions, 234 flow [2021-03-26 13:29:33,797 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=234, PETRI_PLACES=70, PETRI_TRANSITIONS=79} [2021-03-26 13:29:33,797 INFO L343 CegarLoopForPetriNet]: 86 programPoint places, -16 predicate places. [2021-03-26 13:29:33,798 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:29:33,798 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 70 places, 79 transitions, 234 flow [2021-03-26 13:29:33,798 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 70 places, 79 transitions, 234 flow [2021-03-26 13:29:33,798 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 70 places, 79 transitions, 234 flow [2021-03-26 13:29:33,803 INFO L129 PetriNetUnfolder]: 30/102 cut-off events. [2021-03-26 13:29:33,804 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 13:29:33,804 INFO L84 FinitePrefix]: Finished finitePrefix Result has 129 conditions, 102 events. 30/102 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 219 event pairs, 0 based on Foata normal form. 0/102 useless extension candidates. Maximal degree in co-relation 120. Up to 14 conditions per place. [2021-03-26 13:29:33,805 INFO L142 LiptonReduction]: Number of co-enabled transitions 1206 [2021-03-26 13:29:33,807 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:29:33,807 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:29:33,807 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 10 [2021-03-26 13:29:33,811 INFO L480 AbstractCegarLoop]: Abstraction has has 70 places, 79 transitions, 234 flow [2021-03-26 13:29:33,811 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:29:33,811 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:29:33,811 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] [2021-03-26 13:29:33,811 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-26 13:29:33,812 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-26 13:29:33,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:29:33,812 INFO L82 PathProgramCache]: Analyzing trace with hash 2123789327, now seen corresponding path program 1 times [2021-03-26 13:29:33,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:29:33,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933956781] [2021-03-26 13:29:33,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:29:33,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:29:33,847 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:29:33,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:29:33,848 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:29:33,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:29:33,869 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:29:33,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:29:33,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:29:33,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933956781] [2021-03-26 13:29:33,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:29:33,870 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 13:29:33,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983776471] [2021-03-26 13:29:33,870 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 13:29:33,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:29:33,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 13:29:33,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 13:29:33,872 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 269 [2021-03-26 13:29:33,872 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 79 transitions, 234 flow. Second operand has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:29:33,872 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:29:33,872 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 269 [2021-03-26 13:29:33,872 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:29:33,881 INFO L129 PetriNetUnfolder]: 1/45 cut-off events. [2021-03-26 13:29:33,882 INFO L130 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2021-03-26 13:29:33,882 INFO L84 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 45 events. 1/45 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 24 event pairs, 0 based on Foata normal form. 8/53 useless extension candidates. Maximal degree in co-relation 65. Up to 2 conditions per place. [2021-03-26 13:29:33,882 INFO L132 encePairwiseOnDemand]: 261/269 looper letters, 1 selfloop transitions, 1 changer transitions 0/45 dead transitions. [2021-03-26 13:29:33,882 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 45 transitions, 136 flow [2021-03-26 13:29:33,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 13:29:33,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 13:29:33,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 771 transitions. [2021-03-26 13:29:33,884 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9553903345724907 [2021-03-26 13:29:33,884 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 771 transitions. [2021-03-26 13:29:33,884 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 771 transitions. [2021-03-26 13:29:33,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:29:33,884 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 771 transitions. [2021-03-26 13:29:33,885 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 257.0) internal successors, (771), 3 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:29:33,886 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:29:33,887 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:29:33,887 INFO L185 Difference]: Start difference. First operand has 70 places, 79 transitions, 234 flow. Second operand 3 states and 771 transitions. [2021-03-26 13:29:33,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 45 transitions, 136 flow [2021-03-26 13:29:33,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 45 transitions, 135 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 13:29:33,888 INFO L241 Difference]: Finished difference. Result has 71 places, 45 transitions, 133 flow [2021-03-26 13:29:33,888 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=133, PETRI_PLACES=71, PETRI_TRANSITIONS=45} [2021-03-26 13:29:33,888 INFO L343 CegarLoopForPetriNet]: 86 programPoint places, -15 predicate places. [2021-03-26 13:29:33,888 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:29:33,888 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 71 places, 45 transitions, 133 flow [2021-03-26 13:29:33,889 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 71 places, 45 transitions, 133 flow [2021-03-26 13:29:33,889 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 71 places, 45 transitions, 133 flow [2021-03-26 13:29:33,892 INFO L129 PetriNetUnfolder]: 1/45 cut-off events. [2021-03-26 13:29:33,892 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 13:29:33,892 INFO L84 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 45 events. 1/45 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. 0/45 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2021-03-26 13:29:33,892 INFO L142 LiptonReduction]: Number of co-enabled transitions 596 [2021-03-26 13:29:33,894 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:29:33,894 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:29:33,894 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 6 [2021-03-26 13:29:33,894 INFO L480 AbstractCegarLoop]: Abstraction has has 71 places, 45 transitions, 133 flow [2021-03-26 13:29:33,895 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:29:33,895 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:29:33,895 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] [2021-03-26 13:29:33,895 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-26 13:29:33,895 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-26 13:29:33,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:29:33,895 INFO L82 PathProgramCache]: Analyzing trace with hash -228577559, now seen corresponding path program 1 times [2021-03-26 13:29:33,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:29:33,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379635859] [2021-03-26 13:29:33,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:29:33,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:29:34,085 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:29:34,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:29:34,090 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:29:34,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 13:29:34,096 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:29:34,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:29:34,122 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-26 13:29:34,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-26 13:29:34,162 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-26 13:29:34,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-26 13:29:34,207 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-26 13:29:34,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-26 13:29:34,269 INFO L142 QuantifierPusher]: treesize reduction 27, result has 64.5 percent of original size [2021-03-26 13:29:34,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-26 13:29:34,328 INFO L142 QuantifierPusher]: treesize reduction 36, result has 61.3 percent of original size [2021-03-26 13:29:34,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-03-26 13:29:34,410 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-03-26 13:29:34,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-26 13:29:34,464 INFO L142 QuantifierPusher]: treesize reduction 63, result has 52.3 percent of original size [2021-03-26 13:29:34,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-03-26 13:29:34,533 INFO L142 QuantifierPusher]: treesize reduction 72, result has 51.7 percent of original size [2021-03-26 13:29:34,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-03-26 13:29:34,619 INFO L142 QuantifierPusher]: treesize reduction 81, result has 51.2 percent of original size [2021-03-26 13:29:34,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-03-26 13:29:34,716 INFO L142 QuantifierPusher]: treesize reduction 90, result has 50.8 percent of original size [2021-03-26 13:29:34,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 93 [2021-03-26 13:29:34,811 INFO L142 QuantifierPusher]: treesize reduction 108, result has 48.8 percent of original size [2021-03-26 13:29:34,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-03-26 13:29:34,917 INFO L142 QuantifierPusher]: treesize reduction 117, result has 47.3 percent of original size [2021-03-26 13:29:34,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-03-26 13:29:35,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:29:35,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379635859] [2021-03-26 13:29:35,007 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:29:35,007 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-26 13:29:35,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147601155] [2021-03-26 13:29:35,007 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-26 13:29:35,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:29:35,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-26 13:29:35,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2021-03-26 13:29:35,011 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 269 [2021-03-26 13:29:35,014 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 45 transitions, 133 flow. Second operand has 16 states, 16 states have (on average 239.9375) internal successors, (3839), 16 states have internal predecessors, (3839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:29:35,014 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:29:35,015 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 269 [2021-03-26 13:29:35,015 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:29:43,815 INFO L129 PetriNetUnfolder]: 135695/164069 cut-off events. [2021-03-26 13:29:43,815 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 13:29:44,996 INFO L84 FinitePrefix]: Finished finitePrefix Result has 323856 conditions, 164069 events. 135695/164069 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8255. Compared 848567 event pairs, 45057 based on Foata normal form. 1/162339 useless extension candidates. Maximal degree in co-relation 323846. Up to 57345 conditions per place. [2021-03-26 13:29:45,657 INFO L132 encePairwiseOnDemand]: 254/269 looper letters, 104 selfloop transitions, 14 changer transitions 0/148 dead transitions. [2021-03-26 13:29:45,657 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 148 transitions, 575 flow [2021-03-26 13:29:45,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-03-26 13:29:45,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-03-26 13:29:45,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3943 transitions. [2021-03-26 13:29:45,664 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9161245353159851 [2021-03-26 13:29:45,664 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3943 transitions. [2021-03-26 13:29:45,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3943 transitions. [2021-03-26 13:29:45,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:29:45,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3943 transitions. [2021-03-26 13:29:45,672 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 246.4375) internal successors, (3943), 16 states have internal predecessors, (3943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:29:45,677 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 269.0) internal successors, (4573), 17 states have internal predecessors, (4573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:29:45,678 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 269.0) internal successors, (4573), 17 states have internal predecessors, (4573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:29:45,678 INFO L185 Difference]: Start difference. First operand has 71 places, 45 transitions, 133 flow. Second operand 16 states and 3943 transitions. [2021-03-26 13:29:45,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 148 transitions, 575 flow [2021-03-26 13:29:45,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 148 transitions, 574 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 13:29:45,689 INFO L241 Difference]: Finished difference. Result has 99 places, 58 transitions, 241 flow [2021-03-26 13:29:45,689 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=241, PETRI_PLACES=99, PETRI_TRANSITIONS=58} [2021-03-26 13:29:45,689 INFO L343 CegarLoopForPetriNet]: 86 programPoint places, 13 predicate places. [2021-03-26 13:29:45,689 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:29:45,689 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 99 places, 58 transitions, 241 flow [2021-03-26 13:29:45,690 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 99 places, 58 transitions, 241 flow [2021-03-26 13:29:45,690 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 99 places, 58 transitions, 241 flow [2021-03-26 13:29:45,705 INFO L129 PetriNetUnfolder]: 4/204 cut-off events. [2021-03-26 13:29:45,705 INFO L130 PetriNetUnfolder]: For 27/27 co-relation queries the response was YES. [2021-03-26 13:29:45,706 INFO L84 FinitePrefix]: Finished finitePrefix Result has 324 conditions, 204 events. 4/204 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1073 event pairs, 0 based on Foata normal form. 0/181 useless extension candidates. Maximal degree in co-relation 301. Up to 14 conditions per place. [2021-03-26 13:29:45,708 INFO L142 LiptonReduction]: Number of co-enabled transitions 954 [2021-03-26 13:29:45,709 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:29:45,710 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:29:45,710 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 21 [2021-03-26 13:29:45,710 INFO L480 AbstractCegarLoop]: Abstraction has has 99 places, 58 transitions, 241 flow [2021-03-26 13:29:45,712 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 239.9375) internal successors, (3839), 16 states have internal predecessors, (3839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:29:45,712 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:29:45,712 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] [2021-03-26 13:29:45,712 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-03-26 13:29:45,712 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-26 13:29:45,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:29:45,712 INFO L82 PathProgramCache]: Analyzing trace with hash -1044902637, now seen corresponding path program 2 times [2021-03-26 13:29:45,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:29:45,713 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537243152] [2021-03-26 13:29:45,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:29:45,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:29:45,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:29:45,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:29:45,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:29:45,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 13:29:45,826 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:29:45,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:29:45,835 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-26 13:29:45,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:29:45,853 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-26 13:29:45,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 13:29:45,871 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-26 13:29:45,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:29:45,899 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-26 13:29:45,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-26 13:29:45,932 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-03-26 13:29:45,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-03-26 13:29:45,976 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-03-26 13:29:45,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-26 13:29:46,031 INFO L142 QuantifierPusher]: treesize reduction 63, result has 52.3 percent of original size [2021-03-26 13:29:46,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-03-26 13:29:46,093 INFO L142 QuantifierPusher]: treesize reduction 72, result has 51.7 percent of original size [2021-03-26 13:29:46,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-03-26 13:29:46,162 INFO L142 QuantifierPusher]: treesize reduction 81, result has 51.2 percent of original size [2021-03-26 13:29:46,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-03-26 13:29:46,225 INFO L142 QuantifierPusher]: treesize reduction 90, result has 50.8 percent of original size [2021-03-26 13:29:46,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 93 [2021-03-26 13:29:46,313 INFO L142 QuantifierPusher]: treesize reduction 99, result has 50.5 percent of original size [2021-03-26 13:29:46,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-03-26 13:29:46,413 INFO L142 QuantifierPusher]: treesize reduction 117, result has 47.3 percent of original size [2021-03-26 13:29:46,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-03-26 13:29:46,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:29:46,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537243152] [2021-03-26 13:29:46,488 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:29:46,488 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-26 13:29:46,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755256185] [2021-03-26 13:29:46,488 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-26 13:29:46,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:29:46,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-26 13:29:46,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2021-03-26 13:29:46,491 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 269 [2021-03-26 13:29:46,494 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 58 transitions, 241 flow. Second operand has 16 states, 16 states have (on average 239.9375) internal successors, (3839), 16 states have internal predecessors, (3839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:29:46,494 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:29:46,494 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 269 [2021-03-26 13:29:46,494 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:30:12,260 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2021-03-26 13:30:13,655 INFO L129 PetriNetUnfolder]: 190870/258422 cut-off events. [2021-03-26 13:30:13,656 INFO L130 PetriNetUnfolder]: For 264262/291710 co-relation queries the response was YES. [2021-03-26 13:30:15,860 INFO L84 FinitePrefix]: Finished finitePrefix Result has 713273 conditions, 258422 events. 190870/258422 cut-off events. For 264262/291710 co-relation queries the response was YES. Maximal size of possible extension queue 11446. Compared 1874062 event pairs, 61443 based on Foata normal form. 1/256723 useless extension candidates. Maximal degree in co-relation 713249. Up to 80013 conditions per place. [2021-03-26 13:30:17,203 INFO L132 encePairwiseOnDemand]: 254/269 looper letters, 146 selfloop transitions, 20 changer transitions 0/196 dead transitions. [2021-03-26 13:30:17,203 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 196 transitions, 1208 flow [2021-03-26 13:30:17,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-03-26 13:30:17,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-03-26 13:30:17,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3943 transitions. [2021-03-26 13:30:17,210 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9161245353159851 [2021-03-26 13:30:17,210 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3943 transitions. [2021-03-26 13:30:17,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3943 transitions. [2021-03-26 13:30:17,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:30:17,212 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3943 transitions. [2021-03-26 13:30:17,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 246.4375) internal successors, (3943), 16 states have internal predecessors, (3943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:30:17,222 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 269.0) internal successors, (4573), 17 states have internal predecessors, (4573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:30:17,223 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 269.0) internal successors, (4573), 17 states have internal predecessors, (4573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:30:17,223 INFO L185 Difference]: Start difference. First operand has 99 places, 58 transitions, 241 flow. Second operand 16 states and 3943 transitions. [2021-03-26 13:30:17,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 196 transitions, 1208 flow [2021-03-26 13:30:17,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 196 transitions, 1194 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 13:30:17,403 INFO L241 Difference]: Finished difference. Result has 127 places, 76 transitions, 438 flow [2021-03-26 13:30:17,403 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=438, PETRI_PLACES=127, PETRI_TRANSITIONS=76} [2021-03-26 13:30:17,403 INFO L343 CegarLoopForPetriNet]: 86 programPoint places, 41 predicate places. [2021-03-26 13:30:17,404 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:30:17,404 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 127 places, 76 transitions, 438 flow [2021-03-26 13:30:17,404 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 127 places, 76 transitions, 438 flow [2021-03-26 13:30:17,404 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 127 places, 76 transitions, 438 flow [2021-03-26 13:30:17,483 INFO L129 PetriNetUnfolder]: 11/726 cut-off events. [2021-03-26 13:30:17,484 INFO L130 PetriNetUnfolder]: For 301/318 co-relation queries the response was YES. [2021-03-26 13:30:17,487 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1175 conditions, 726 events. 11/726 cut-off events. For 301/318 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 7001 event pairs, 0 based on Foata normal form. 0/641 useless extension candidates. Maximal degree in co-relation 1138. Up to 59 conditions per place. [2021-03-26 13:30:17,494 INFO L142 LiptonReduction]: Number of co-enabled transitions 1402 [2021-03-26 13:30:17,497 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:30:17,497 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:30:17,497 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 93 [2021-03-26 13:30:17,498 INFO L480 AbstractCegarLoop]: Abstraction has has 127 places, 76 transitions, 438 flow [2021-03-26 13:30:17,499 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 239.9375) internal successors, (3839), 16 states have internal predecessors, (3839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:30:17,499 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:30:17,499 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] [2021-03-26 13:30:17,499 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-03-26 13:30:17,499 INFO L428 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-26 13:30:17,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:30:17,500 INFO L82 PathProgramCache]: Analyzing trace with hash -1588330511, now seen corresponding path program 3 times [2021-03-26 13:30:17,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:30:17,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112448815] [2021-03-26 13:30:17,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:30:17,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:30:17,570 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:30:17,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:30:17,571 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:30:17,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 13:30:17,576 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:30:17,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:30:17,585 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-26 13:30:17,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:30:17,598 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-26 13:30:17,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 13:30:17,617 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-26 13:30:17,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:30:17,640 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-26 13:30:17,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-26 13:30:17,673 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-03-26 13:30:17,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-03-26 13:30:17,710 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-03-26 13:30:17,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-26 13:30:17,765 INFO L142 QuantifierPusher]: treesize reduction 63, result has 52.3 percent of original size [2021-03-26 13:30:17,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-03-26 13:30:17,824 INFO L142 QuantifierPusher]: treesize reduction 72, result has 51.7 percent of original size [2021-03-26 13:30:17,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-03-26 13:30:17,897 INFO L142 QuantifierPusher]: treesize reduction 81, result has 51.2 percent of original size [2021-03-26 13:30:17,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-03-26 13:30:17,968 INFO L142 QuantifierPusher]: treesize reduction 99, result has 49.0 percent of original size [2021-03-26 13:30:17,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-03-26 13:30:18,052 INFO L142 QuantifierPusher]: treesize reduction 108, result has 48.8 percent of original size [2021-03-26 13:30:18,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-03-26 13:30:18,149 INFO L142 QuantifierPusher]: treesize reduction 117, result has 47.3 percent of original size [2021-03-26 13:30:18,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-03-26 13:30:18,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:30:18,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112448815] [2021-03-26 13:30:18,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:30:18,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-26 13:30:18,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124592637] [2021-03-26 13:30:18,229 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-26 13:30:18,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:30:18,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-26 13:30:18,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2021-03-26 13:30:18,232 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 269 [2021-03-26 13:30:18,235 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 76 transitions, 438 flow. Second operand has 16 states, 16 states have (on average 239.9375) internal successors, (3839), 16 states have internal predecessors, (3839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:30:18,235 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:30:18,235 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 269 [2021-03-26 13:30:18,235 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand