/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/mcr/example_15.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-0e22065b97d0a1f8b3904e080cebe0f05e88d2b7-0e22065 [2021-06-11 09:36:43,505 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-11 09:36:43,507 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-11 09:36:43,544 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-11 09:36:43,544 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-11 09:36:43,547 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-11 09:36:43,549 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-11 09:36:43,553 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-11 09:36:43,555 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-11 09:36:43,559 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-11 09:36:43,559 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-11 09:36:43,560 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-11 09:36:43,561 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-11 09:36:43,563 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-11 09:36:43,564 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-11 09:36:43,565 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-11 09:36:43,567 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-11 09:36:43,568 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-11 09:36:43,570 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-11 09:36:43,577 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-11 09:36:43,578 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-11 09:36:43,579 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-11 09:36:43,580 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-11 09:36:43,581 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-11 09:36:43,587 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-06-11 09:36:43,587 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-11 09:36:43,587 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-11 09:36:43,589 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-11 09:36:43,589 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-11 09:36:43,590 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-06-11 09:36:43,590 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-11 09:36:43,590 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-11 09:36:43,592 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-11 09:36:43,592 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-11 09:36:43,593 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-11 09:36:43,593 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-11 09:36:43,593 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-11 09:36:43,594 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-11 09:36:43,594 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-11 09:36:43,594 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-11 09:36:43,595 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-11 09:36:43,598 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbe.epf [2021-06-11 09:36:43,629 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-11 09:36:43,629 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-11 09:36:43,631 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-11 09:36:43,631 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-11 09:36:43,632 INFO L138 SettingsManager]: * Use SBE=true [2021-06-11 09:36:43,632 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-11 09:36:43,632 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-11 09:36:43,632 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-11 09:36:43,632 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-11 09:36:43,632 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-11 09:36:43,633 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-11 09:36:43,633 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-11 09:36:43,633 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-11 09:36:43,633 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-11 09:36:43,634 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-11 09:36:43,634 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-11 09:36:43,634 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-11 09:36:43,634 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-11 09:36:43,634 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-11 09:36:43,634 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-11 09:36:43,634 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-11 09:36:43,635 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-11 09:36:43,635 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-11 09:36:43,635 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-11 09:36:43,635 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-11 09:36:43,635 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-11 09:36:43,635 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-11 09:36:43,635 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-11 09:36:43,635 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-06-11 09:36:43,636 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-11 09:36:43,940 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-11 09:36:43,964 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-11 09:36:43,966 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-11 09:36:43,967 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-11 09:36:43,970 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-11 09:36:43,970 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_15.bpl [2021-06-11 09:36:43,971 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_15.bpl' [2021-06-11 09:36:44,009 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-11 09:36:44,011 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-11 09:36:44,011 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-11 09:36:44,012 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-11 09:36:44,012 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-11 09:36:44,022 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_15.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 09:36:44" (1/1) ... [2021-06-11 09:36:44,028 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_15.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 09:36:44" (1/1) ... [2021-06-11 09:36:44,034 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-11 09:36:44,035 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-11 09:36:44,035 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-11 09:36:44,035 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-11 09:36:44,042 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_15.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 09:36:44" (1/1) ... [2021-06-11 09:36:44,042 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_15.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 09:36:44" (1/1) ... [2021-06-11 09:36:44,043 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_15.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 09:36:44" (1/1) ... [2021-06-11 09:36:44,043 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_15.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 09:36:44" (1/1) ... [2021-06-11 09:36:44,045 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_15.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 09:36:44" (1/1) ... [2021-06-11 09:36:44,046 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_15.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 09:36:44" (1/1) ... [2021-06-11 09:36:44,047 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_15.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 09:36:44" (1/1) ... [2021-06-11 09:36:44,048 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-11 09:36:44,049 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-11 09:36:44,049 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-11 09:36:44,049 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-11 09:36:44,050 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_15.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 09:36:44" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-11 09:36:44,101 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_14 given in one single declaration [2021-06-11 09:36:44,101 INFO L130 BoogieDeclarations]: Found specification of procedure set_14 [2021-06-11 09:36:44,101 INFO L138 BoogieDeclarations]: Found implementation of procedure set_14 [2021-06-11 09:36:44,101 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2021-06-11 09:36:44,101 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2021-06-11 09:36:44,101 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2021-06-11 09:36:44,102 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2021-06-11 09:36:44,102 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2021-06-11 09:36:44,102 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2021-06-11 09:36:44,102 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2021-06-11 09:36:44,102 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2021-06-11 09:36:44,102 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2021-06-11 09:36:44,103 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2021-06-11 09:36:44,103 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2021-06-11 09:36:44,103 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2021-06-11 09:36:44,103 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2021-06-11 09:36:44,103 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2021-06-11 09:36:44,103 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2021-06-11 09:36:44,103 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_9 given in one single declaration [2021-06-11 09:36:44,103 INFO L130 BoogieDeclarations]: Found specification of procedure set_9 [2021-06-11 09:36:44,104 INFO L138 BoogieDeclarations]: Found implementation of procedure set_9 [2021-06-11 09:36:44,104 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-11 09:36:44,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-11 09:36:44,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-11 09:36:44,104 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_12 given in one single declaration [2021-06-11 09:36:44,104 INFO L130 BoogieDeclarations]: Found specification of procedure set_12 [2021-06-11 09:36:44,104 INFO L138 BoogieDeclarations]: Found implementation of procedure set_12 [2021-06-11 09:36:44,105 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_5 given in one single declaration [2021-06-11 09:36:44,105 INFO L130 BoogieDeclarations]: Found specification of procedure set_5 [2021-06-11 09:36:44,105 INFO L138 BoogieDeclarations]: Found implementation of procedure set_5 [2021-06-11 09:36:44,105 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_13 given in one single declaration [2021-06-11 09:36:44,105 INFO L130 BoogieDeclarations]: Found specification of procedure set_13 [2021-06-11 09:36:44,105 INFO L138 BoogieDeclarations]: Found implementation of procedure set_13 [2021-06-11 09:36:44,105 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_6 given in one single declaration [2021-06-11 09:36:44,105 INFO L130 BoogieDeclarations]: Found specification of procedure set_6 [2021-06-11 09:36:44,106 INFO L138 BoogieDeclarations]: Found implementation of procedure set_6 [2021-06-11 09:36:44,106 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_10 given in one single declaration [2021-06-11 09:36:44,106 INFO L130 BoogieDeclarations]: Found specification of procedure set_10 [2021-06-11 09:36:44,106 INFO L138 BoogieDeclarations]: Found implementation of procedure set_10 [2021-06-11 09:36:44,106 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_7 given in one single declaration [2021-06-11 09:36:44,106 INFO L130 BoogieDeclarations]: Found specification of procedure set_7 [2021-06-11 09:36:44,106 INFO L138 BoogieDeclarations]: Found implementation of procedure set_7 [2021-06-11 09:36:44,107 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_11 given in one single declaration [2021-06-11 09:36:44,107 INFO L130 BoogieDeclarations]: Found specification of procedure set_11 [2021-06-11 09:36:44,107 INFO L138 BoogieDeclarations]: Found implementation of procedure set_11 [2021-06-11 09:36:44,107 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_8 given in one single declaration [2021-06-11 09:36:44,107 INFO L130 BoogieDeclarations]: Found specification of procedure set_8 [2021-06-11 09:36:44,107 INFO L138 BoogieDeclarations]: Found implementation of procedure set_8 [2021-06-11 09:36:44,108 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-11 09:36:44,289 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-11 09:36:44,290 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-11 09:36:44,291 INFO L202 PluginConnector]: Adding new model example_15.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.06 09:36:44 BoogieIcfgContainer [2021-06-11 09:36:44,291 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-11 09:36:44,292 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-11 09:36:44,292 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-11 09:36:44,295 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-11 09:36:44,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_15.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 09:36:44" (1/2) ... [2021-06-11 09:36:44,296 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@694483c5 and model type example_15.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.06 09:36:44, skipping insertion in model container [2021-06-11 09:36:44,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_15.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.06 09:36:44" (2/2) ... [2021-06-11 09:36:44,297 INFO L111 eAbstractionObserver]: Analyzing ICFG example_15.bpl [2021-06-11 09:36:44,302 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-11 09:36:44,304 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-06-11 09:36:44,305 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-11 09:36:44,578 INFO L149 ThreadInstanceAdder]: Constructed 225 joinOtherThreadTransitions. [2021-06-11 09:36:44,596 INFO L253 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2021-06-11 09:36:44,623 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:36:44,623 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:36:44,624 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:36:44,624 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:36:44,624 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:36:44,624 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:36:44,624 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:36:44,624 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:36:44,641 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 124 places, 288 transitions, 1326 flow [2021-06-11 09:37:03,119 INFO L129 PetriNetUnfolder]: 212993/245808 cut-off events. [2021-06-11 09:37:03,119 INFO L130 PetriNetUnfolder]: For 245760/245760 co-relation queries the response was YES. [2021-06-11 09:37:04,922 INFO L84 FinitePrefix]: Finished finitePrefix Result has 491614 conditions, 245808 events. 212993/245808 cut-off events. For 245760/245760 co-relation queries the response was YES. Maximal size of possible extension queue 7060. Compared 1008684 event pairs, 0 based on Foata normal form. 0/245807 useless extension candidates. Maximal degree in co-relation 229448. Up to 51480 conditions per place. [2021-06-11 09:37:04,923 INFO L82 GeneralOperation]: Start removeDead. Operand has 124 places, 288 transitions, 1326 flow [2021-06-11 09:37:06,608 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 107 places, 271 transitions, 1262 flow [2021-06-11 09:37:06,610 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:37:06,620 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 107 places, 271 transitions, 1262 flow [2021-06-11 09:37:06,624 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 107 places, 271 transitions, 1262 flow [2021-06-11 09:37:06,626 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 107 places, 271 transitions, 1262 flow [2021-06-11 09:37:24,443 INFO L129 PetriNetUnfolder]: 212993/245806 cut-off events. [2021-06-11 09:37:24,443 INFO L130 PetriNetUnfolder]: For 245760/245760 co-relation queries the response was YES. [2021-06-11 09:37:26,198 INFO L84 FinitePrefix]: Finished finitePrefix Result has 491612 conditions, 245806 events. 212993/245806 cut-off events. For 245760/245760 co-relation queries the response was YES. Maximal size of possible extension queue 7060. Compared 1023057 event pairs, 0 based on Foata normal form. 0/245806 useless extension candidates. Maximal degree in co-relation 229448. Up to 51480 conditions per place. [2021-06-11 09:37:31,719 INFO L151 LiptonReduction]: Number of co-enabled transitions 13020 [2021-06-11 09:37:32,029 INFO L163 LiptonReduction]: Checked pairs total: 3465 [2021-06-11 09:37:32,030 INFO L165 LiptonReduction]: Total number of compositions: 15 [2021-06-11 09:37:32,033 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 25423 [2021-06-11 09:37:47,229 INFO L129 PetriNetUnfolder]: 212993/245790 cut-off events. [2021-06-11 09:37:47,229 INFO L130 PetriNetUnfolder]: For 245760/245760 co-relation queries the response was YES. [2021-06-11 09:37:47,230 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:37:47,230 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 09:37:47,231 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr14INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-06-11 09:37:47,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:37:47,235 INFO L82 PathProgramCache]: Analyzing trace with hash 873046711, now seen corresponding path program 1 times [2021-06-11 09:37:47,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:37:47,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658094547] [2021-06-11 09:37:47,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:37:47,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:37:47,348 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:37:47,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:37:47,359 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:37:47,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:37:47,364 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:37:47,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:37:47,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:37:47,366 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658094547] [2021-06-11 09:37:47,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:37:47,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 09:37:47,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948468805] [2021-06-11 09:37:47,374 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:37:47,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:37:47,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:37:47,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:37:47,387 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 303 [2021-06-11 09:37:47,391 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 256 transitions, 1232 flow. Second operand has 3 states, 3 states have (on average 287.6666666666667) internal successors, (863), 3 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:37:47,391 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:37:47,391 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 303 [2021-06-11 09:37:47,392 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:37:55,926 INFO L129 PetriNetUnfolder]: 98501/115021 cut-off events. [2021-06-11 09:37:55,927 INFO L130 PetriNetUnfolder]: For 164037/164037 co-relation queries the response was YES. [2021-06-11 09:37:56,657 INFO L84 FinitePrefix]: Finished finitePrefix Result has 230165 conditions, 115021 events. 98501/115021 cut-off events. For 164037/164037 co-relation queries the response was YES. Maximal size of possible extension queue 3628. Compared 580108 event pairs, 0 based on Foata normal form. 16278/131299 useless extension candidates. Maximal degree in co-relation 229397. Up to 24024 conditions per place. [2021-06-11 09:37:57,137 INFO L132 encePairwiseOnDemand]: 290/303 looper letters, 3 selfloop transitions, 1 changer transitions 0/244 dead transitions. [2021-06-11 09:37:57,137 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 244 transitions, 1180 flow [2021-06-11 09:37:57,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:37:57,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:37:57,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 877 transitions. [2021-06-11 09:37:57,149 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9647964796479648 [2021-06-11 09:37:57,150 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 877 transitions. [2021-06-11 09:37:57,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 877 transitions. [2021-06-11 09:37:57,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:37:57,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 877 transitions. [2021-06-11 09:37:57,159 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 292.3333333333333) internal successors, (877), 3 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:37:57,165 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:37:57,165 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:37:57,167 INFO L185 Difference]: Start difference. First operand has 92 places, 256 transitions, 1232 flow. Second operand 3 states and 877 transitions. [2021-06-11 09:37:57,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 244 transitions, 1180 flow [2021-06-11 09:37:58,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 244 transitions, 724 flow, removed 0 selfloop flow, removed 30 redundant places. [2021-06-11 09:37:58,778 INFO L241 Difference]: Finished difference. Result has 64 places, 244 transitions, 718 flow [2021-06-11 09:37:58,780 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=303, PETRI_DIFFERENCE_MINUEND_FLOW=716, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=718, PETRI_PLACES=64, PETRI_TRANSITIONS=244} [2021-06-11 09:37:58,780 INFO L343 CegarLoopForPetriNet]: 92 programPoint places, -28 predicate places. [2021-06-11 09:37:58,781 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:37:58,781 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 64 places, 244 transitions, 718 flow [2021-06-11 09:37:58,781 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 64 places, 244 transitions, 718 flow [2021-06-11 09:37:58,782 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 64 places, 244 transitions, 718 flow [2021-06-11 09:38:02,788 INFO L129 PetriNetUnfolder]: 98501/115021 cut-off events. [2021-06-11 09:38:02,788 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:38:03,141 INFO L84 FinitePrefix]: Finished finitePrefix Result has 115039 conditions, 115021 events. 98501/115021 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3628. Compared 472158 event pairs, 0 based on Foata normal form. 0/115021 useless extension candidates. Maximal degree in co-relation 115010. Up to 24024 conditions per place. [2021-06-11 09:38:04,524 INFO L151 LiptonReduction]: Number of co-enabled transitions 5964 [2021-06-11 09:38:04,551 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:38:04,552 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:38:04,552 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 5771 [2021-06-11 09:38:04,553 INFO L480 AbstractCegarLoop]: Abstraction has has 64 places, 244 transitions, 718 flow [2021-06-11 09:38:04,554 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 287.6666666666667) internal successors, (863), 3 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:38:04,554 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:38:04,554 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 09:38:04,554 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-11 09:38:04,554 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr14INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-06-11 09:38:04,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:38:04,555 INFO L82 PathProgramCache]: Analyzing trace with hash 1941928801, now seen corresponding path program 1 times [2021-06-11 09:38:04,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:38:04,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068031787] [2021-06-11 09:38:04,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:38:04,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:38:04,581 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:38:04,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:38:04,582 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:38:04,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:38:04,585 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:38:04,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:38:04,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:38:04,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068031787] [2021-06-11 09:38:04,586 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:38:04,586 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 09:38:04,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801535737] [2021-06-11 09:38:04,587 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:38:04,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:38:04,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:38:04,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:38:04,590 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 303 [2021-06-11 09:38:04,591 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 244 transitions, 718 flow. Second operand has 3 states, 3 states have (on average 287.6666666666667) internal successors, (863), 3 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:38:04,591 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:38:04,591 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 303 [2021-06-11 09:38:04,591 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:38:07,906 INFO L129 PetriNetUnfolder]: 65871/78295 cut-off events. [2021-06-11 09:38:07,906 INFO L130 PetriNetUnfolder]: For 8206/8206 co-relation queries the response was YES. [2021-06-11 09:38:08,180 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82425 conditions, 78295 events. 65871/78295 cut-off events. For 8206/8206 co-relation queries the response was YES. Maximal size of possible extension queue 3067. Compared 385348 event pairs, 0 based on Foata normal form. 4096/82391 useless extension candidates. Maximal degree in co-relation 82394. Up to 18018 conditions per place. [2021-06-11 09:38:08,571 INFO L132 encePairwiseOnDemand]: 295/303 looper letters, 8 selfloop transitions, 1 changer transitions 0/237 dead transitions. [2021-06-11 09:38:08,571 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 237 transitions, 715 flow [2021-06-11 09:38:08,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:38:08,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:38:08,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 877 transitions. [2021-06-11 09:38:08,574 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9647964796479648 [2021-06-11 09:38:08,574 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 877 transitions. [2021-06-11 09:38:08,574 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 877 transitions. [2021-06-11 09:38:08,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:38:08,574 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 877 transitions. [2021-06-11 09:38:08,576 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 292.3333333333333) internal successors, (877), 3 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:38:08,578 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:38:08,578 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:38:08,579 INFO L185 Difference]: Start difference. First operand has 64 places, 244 transitions, 718 flow. Second operand 3 states and 877 transitions. [2021-06-11 09:38:08,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 237 transitions, 715 flow [2021-06-11 09:38:08,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 237 transitions, 714 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-11 09:38:08,603 INFO L241 Difference]: Finished difference. Result has 65 places, 237 transitions, 698 flow [2021-06-11 09:38:08,604 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=303, PETRI_DIFFERENCE_MINUEND_FLOW=696, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=698, PETRI_PLACES=65, PETRI_TRANSITIONS=237} [2021-06-11 09:38:08,604 INFO L343 CegarLoopForPetriNet]: 92 programPoint places, -27 predicate places. [2021-06-11 09:38:08,605 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:38:08,605 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 65 places, 237 transitions, 698 flow [2021-06-11 09:38:08,606 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 65 places, 237 transitions, 698 flow [2021-06-11 09:38:08,607 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 65 places, 237 transitions, 698 flow [2021-06-11 09:38:11,318 INFO L129 PetriNetUnfolder]: 65871/78295 cut-off events. [2021-06-11 09:38:11,318 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:38:11,582 INFO L84 FinitePrefix]: Finished finitePrefix Result has 78314 conditions, 78295 events. 65871/78295 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3068. Compared 332490 event pairs, 0 based on Foata normal form. 0/78295 useless extension candidates. Maximal degree in co-relation 78295. Up to 18018 conditions per place. [2021-06-11 09:38:12,551 INFO L151 LiptonReduction]: Number of co-enabled transitions 5768 [2021-06-11 09:38:12,575 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:38:12,575 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:38:12,576 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 3971 [2021-06-11 09:38:12,576 INFO L480 AbstractCegarLoop]: Abstraction has has 65 places, 237 transitions, 698 flow [2021-06-11 09:38:12,577 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 287.6666666666667) internal successors, (863), 3 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:38:12,577 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:38:12,577 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 09:38:12,577 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-11 09:38:12,578 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr14INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-06-11 09:38:12,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:38:12,578 INFO L82 PathProgramCache]: Analyzing trace with hash 607927321, now seen corresponding path program 1 times [2021-06-11 09:38:12,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:38:12,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440379578] [2021-06-11 09:38:12,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:38:12,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:38:12,599 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:38:12,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:38:12,600 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:38:12,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:38:12,603 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:38:12,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:38:12,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:38:12,604 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440379578] [2021-06-11 09:38:12,604 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:38:12,604 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 09:38:12,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114455065] [2021-06-11 09:38:12,605 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:38:12,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:38:12,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:38:12,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:38:12,606 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 303 [2021-06-11 09:38:12,607 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 237 transitions, 698 flow. Second operand has 3 states, 3 states have (on average 287.6666666666667) internal successors, (863), 3 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:38:12,607 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:38:12,607 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 303 [2021-06-11 09:38:12,608 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:38:13,937 INFO L129 PetriNetUnfolder]: 31308/38219 cut-off events. [2021-06-11 09:38:13,937 INFO L130 PetriNetUnfolder]: For 5696/5696 co-relation queries the response was YES. [2021-06-11 09:38:14,037 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39347 conditions, 38219 events. 31308/38219 cut-off events. For 5696/5696 co-relation queries the response was YES. Maximal size of possible extension queue 1309. Compared 186164 event pairs, 0 based on Foata normal form. 4589/42808 useless extension candidates. Maximal degree in co-relation 39327. Up to 6435 conditions per place. [2021-06-11 09:38:14,138 INFO L132 encePairwiseOnDemand]: 293/303 looper letters, 6 selfloop transitions, 1 changer transitions 0/228 dead transitions. [2021-06-11 09:38:14,138 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 228 transitions, 685 flow [2021-06-11 09:38:14,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:38:14,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:38:14,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 877 transitions. [2021-06-11 09:38:14,140 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9647964796479648 [2021-06-11 09:38:14,140 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 877 transitions. [2021-06-11 09:38:14,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 877 transitions. [2021-06-11 09:38:14,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:38:14,141 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 877 transitions. [2021-06-11 09:38:14,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 292.3333333333333) internal successors, (877), 3 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:38:14,144 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:38:14,145 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:38:14,145 INFO L185 Difference]: Start difference. First operand has 65 places, 237 transitions, 698 flow. Second operand 3 states and 877 transitions. [2021-06-11 09:38:14,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 228 transitions, 685 flow [2021-06-11 09:38:14,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 228 transitions, 684 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-11 09:38:14,152 INFO L241 Difference]: Finished difference. Result has 66 places, 228 transitions, 672 flow [2021-06-11 09:38:14,152 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=303, PETRI_DIFFERENCE_MINUEND_FLOW=670, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=672, PETRI_PLACES=66, PETRI_TRANSITIONS=228} [2021-06-11 09:38:14,152 INFO L343 CegarLoopForPetriNet]: 92 programPoint places, -26 predicate places. [2021-06-11 09:38:14,152 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:38:14,153 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 66 places, 228 transitions, 672 flow [2021-06-11 09:38:14,153 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 66 places, 228 transitions, 672 flow [2021-06-11 09:38:14,154 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 66 places, 228 transitions, 672 flow [2021-06-11 09:38:15,270 INFO L129 PetriNetUnfolder]: 31308/38219 cut-off events. [2021-06-11 09:38:15,270 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:38:15,375 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38239 conditions, 38219 events. 31308/38219 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1310. Compared 162997 event pairs, 0 based on Foata normal form. 0/38219 useless extension candidates. Maximal degree in co-relation 38220. Up to 6435 conditions per place. [2021-06-11 09:38:15,674 INFO L151 LiptonReduction]: Number of co-enabled transitions 5516 [2021-06-11 09:38:15,692 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:38:15,692 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:38:15,692 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1540 [2021-06-11 09:38:15,693 INFO L480 AbstractCegarLoop]: Abstraction has has 66 places, 228 transitions, 672 flow [2021-06-11 09:38:15,693 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 287.6666666666667) internal successors, (863), 3 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:38:15,694 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:38:15,694 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 09:38:15,694 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-11 09:38:15,694 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr14INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-06-11 09:38:15,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:38:15,694 INFO L82 PathProgramCache]: Analyzing trace with hash -926207163, now seen corresponding path program 1 times [2021-06-11 09:38:15,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:38:15,695 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977194637] [2021-06-11 09:38:15,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:38:15,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:38:15,715 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:38:15,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:38:15,717 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:38:15,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:38:15,720 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:38:15,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:38:15,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:38:15,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977194637] [2021-06-11 09:38:15,722 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:38:15,722 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 09:38:15,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751687559] [2021-06-11 09:38:15,723 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:38:15,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:38:15,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:38:15,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:38:15,724 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 303 [2021-06-11 09:38:15,725 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 228 transitions, 672 flow. Second operand has 3 states, 3 states have (on average 287.6666666666667) internal successors, (863), 3 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:38:15,725 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:38:15,725 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 303 [2021-06-11 09:38:15,725 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:38:16,645 INFO L129 PetriNetUnfolder]: 24290/30177 cut-off events. [2021-06-11 09:38:16,646 INFO L130 PetriNetUnfolder]: For 2923/2923 co-relation queries the response was YES. [2021-06-11 09:38:16,757 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32098 conditions, 30177 events. 24290/30177 cut-off events. For 2923/2923 co-relation queries the response was YES. Maximal size of possible extension queue 1309. Compared 148492 event pairs, 0 based on Foata normal form. 1024/31201 useless extension candidates. Maximal degree in co-relation 32077. Up to 6435 conditions per place. [2021-06-11 09:38:16,881 INFO L132 encePairwiseOnDemand]: 296/303 looper letters, 9 selfloop transitions, 1 changer transitions 0/222 dead transitions. [2021-06-11 09:38:16,881 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 222 transitions, 674 flow [2021-06-11 09:38:16,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:38:16,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:38:16,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 877 transitions. [2021-06-11 09:38:16,884 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9647964796479648 [2021-06-11 09:38:16,884 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 877 transitions. [2021-06-11 09:38:16,884 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 877 transitions. [2021-06-11 09:38:16,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:38:16,884 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 877 transitions. [2021-06-11 09:38:16,886 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 292.3333333333333) internal successors, (877), 3 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:38:16,888 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:38:16,888 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:38:16,888 INFO L185 Difference]: Start difference. First operand has 66 places, 228 transitions, 672 flow. Second operand 3 states and 877 transitions. [2021-06-11 09:38:16,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 222 transitions, 674 flow [2021-06-11 09:38:16,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 222 transitions, 673 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-11 09:38:16,893 INFO L241 Difference]: Finished difference. Result has 67 places, 222 transitions, 655 flow [2021-06-11 09:38:16,894 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=303, PETRI_DIFFERENCE_MINUEND_FLOW=653, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=655, PETRI_PLACES=67, PETRI_TRANSITIONS=222} [2021-06-11 09:38:16,894 INFO L343 CegarLoopForPetriNet]: 92 programPoint places, -25 predicate places. [2021-06-11 09:38:16,894 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:38:16,894 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 67 places, 222 transitions, 655 flow [2021-06-11 09:38:16,894 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 67 places, 222 transitions, 655 flow [2021-06-11 09:38:16,895 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 67 places, 222 transitions, 655 flow [2021-06-11 09:38:17,681 INFO L129 PetriNetUnfolder]: 24290/30177 cut-off events. [2021-06-11 09:38:17,681 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:38:17,788 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30198 conditions, 30177 events. 24290/30177 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1310. Compared 133239 event pairs, 0 based on Foata normal form. 0/30177 useless extension candidates. Maximal degree in co-relation 30181. Up to 6435 conditions per place. [2021-06-11 09:38:18,047 INFO L151 LiptonReduction]: Number of co-enabled transitions 5348 [2021-06-11 09:38:18,060 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:38:18,060 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:38:18,060 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1166 [2021-06-11 09:38:18,061 INFO L480 AbstractCegarLoop]: Abstraction has has 67 places, 222 transitions, 655 flow [2021-06-11 09:38:18,062 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 287.6666666666667) internal successors, (863), 3 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:38:18,062 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:38:18,062 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 09:38:18,062 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-11 09:38:18,062 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr14INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-06-11 09:38:18,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:38:18,062 INFO L82 PathProgramCache]: Analyzing trace with hash 1646851433, now seen corresponding path program 1 times [2021-06-11 09:38:18,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:38:18,063 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924361233] [2021-06-11 09:38:18,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:38:18,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:38:18,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:38:18,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:38:18,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:38:18,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:38:18,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:38:18,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:38:18,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:38:18,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924361233] [2021-06-11 09:38:18,090 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:38:18,091 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 09:38:18,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280025146] [2021-06-11 09:38:18,091 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:38:18,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:38:18,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:38:18,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:38:18,092 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 303 [2021-06-11 09:38:18,093 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 222 transitions, 655 flow. Second operand has 3 states, 3 states have (on average 287.6666666666667) internal successors, (863), 3 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:38:18,093 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:38:18,093 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 303 [2021-06-11 09:38:18,093 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:38:18,406 INFO L129 PetriNetUnfolder]: 8502/11001 cut-off events. [2021-06-11 09:38:18,406 INFO L130 PetriNetUnfolder]: For 2285/2285 co-relation queries the response was YES. [2021-06-11 09:38:18,428 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11130 conditions, 11001 events. 8502/11001 cut-off events. For 2285/2285 co-relation queries the response was YES. Maximal size of possible extension queue 503. Compared 50723 event pairs, 0 based on Foata normal form. 2179/13180 useless extension candidates. Maximal degree in co-relation 11112. Up to 1980 conditions per place. [2021-06-11 09:38:18,464 INFO L132 encePairwiseOnDemand]: 291/303 looper letters, 4 selfloop transitions, 1 changer transitions 0/211 dead transitions. [2021-06-11 09:38:18,465 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 211 transitions, 632 flow [2021-06-11 09:38:18,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:38:18,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:38:18,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 877 transitions. [2021-06-11 09:38:18,467 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9647964796479648 [2021-06-11 09:38:18,467 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 877 transitions. [2021-06-11 09:38:18,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 877 transitions. [2021-06-11 09:38:18,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:38:18,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 877 transitions. [2021-06-11 09:38:18,470 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 292.3333333333333) internal successors, (877), 3 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:38:18,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:38:18,472 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:38:18,472 INFO L185 Difference]: Start difference. First operand has 67 places, 222 transitions, 655 flow. Second operand 3 states and 877 transitions. [2021-06-11 09:38:18,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 211 transitions, 632 flow [2021-06-11 09:38:18,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 211 transitions, 631 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-11 09:38:18,476 INFO L241 Difference]: Finished difference. Result has 68 places, 211 transitions, 623 flow [2021-06-11 09:38:18,477 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=303, PETRI_DIFFERENCE_MINUEND_FLOW=621, PETRI_DIFFERENCE_MINUEND_PLACES=66, 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=623, PETRI_PLACES=68, PETRI_TRANSITIONS=211} [2021-06-11 09:38:18,477 INFO L343 CegarLoopForPetriNet]: 92 programPoint places, -24 predicate places. [2021-06-11 09:38:18,477 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:38:18,477 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 68 places, 211 transitions, 623 flow [2021-06-11 09:38:18,477 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 68 places, 211 transitions, 623 flow [2021-06-11 09:38:18,478 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 68 places, 211 transitions, 623 flow [2021-06-11 09:38:18,765 INFO L129 PetriNetUnfolder]: 8502/11001 cut-off events. [2021-06-11 09:38:18,765 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:38:18,797 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11023 conditions, 11001 events. 8502/11001 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 503. Compared 47146 event pairs, 0 based on Foata normal form. 0/11001 useless extension candidates. Maximal degree in co-relation 11006. Up to 1980 conditions per place. [2021-06-11 09:38:18,873 INFO L151 LiptonReduction]: Number of co-enabled transitions 5040 [2021-06-11 09:38:18,888 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:38:18,888 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:38:18,888 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 411 [2021-06-11 09:38:18,889 INFO L480 AbstractCegarLoop]: Abstraction has has 68 places, 211 transitions, 623 flow [2021-06-11 09:38:18,890 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 287.6666666666667) internal successors, (863), 3 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:38:18,890 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:38:18,890 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 09:38:18,890 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-11 09:38:18,890 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr14INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-06-11 09:38:18,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:38:18,890 INFO L82 PathProgramCache]: Analyzing trace with hash -945345547, now seen corresponding path program 1 times [2021-06-11 09:38:18,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:38:18,891 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242208299] [2021-06-11 09:38:18,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:38:18,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:38:18,909 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:38:18,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:38:18,910 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:38:18,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:38:18,913 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:38:18,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:38:18,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:38:18,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242208299] [2021-06-11 09:38:18,914 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:38:18,914 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 09:38:18,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072215365] [2021-06-11 09:38:18,915 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:38:18,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:38:18,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:38:18,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:38:18,916 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 303 [2021-06-11 09:38:18,917 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 211 transitions, 623 flow. Second operand has 3 states, 3 states have (on average 287.6666666666667) internal successors, (863), 3 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:38:18,917 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:38:18,917 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 303 [2021-06-11 09:38:18,917 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:38:19,112 INFO L129 PetriNetUnfolder]: 4371/5948 cut-off events. [2021-06-11 09:38:19,112 INFO L130 PetriNetUnfolder]: For 912/912 co-relation queries the response was YES. [2021-06-11 09:38:19,124 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6298 conditions, 5948 events. 4371/5948 cut-off events. For 912/912 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 27457 event pairs, 0 based on Foata normal form. 586/6534 useless extension candidates. Maximal degree in co-relation 6280. Up to 880 conditions per place. [2021-06-11 09:38:19,139 INFO L132 encePairwiseOnDemand]: 294/303 looper letters, 7 selfloop transitions, 1 changer transitions 0/203 dead transitions. [2021-06-11 09:38:19,139 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 203 transitions, 615 flow [2021-06-11 09:38:19,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:38:19,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:38:19,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 877 transitions. [2021-06-11 09:38:19,141 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9647964796479648 [2021-06-11 09:38:19,141 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 877 transitions. [2021-06-11 09:38:19,141 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 877 transitions. [2021-06-11 09:38:19,142 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:38:19,142 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 877 transitions. [2021-06-11 09:38:19,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 292.3333333333333) internal successors, (877), 3 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:38:19,145 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:38:19,146 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:38:19,146 INFO L185 Difference]: Start difference. First operand has 68 places, 211 transitions, 623 flow. Second operand 3 states and 877 transitions. [2021-06-11 09:38:19,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 203 transitions, 615 flow [2021-06-11 09:38:19,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 203 transitions, 614 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-11 09:38:19,150 INFO L241 Difference]: Finished difference. Result has 69 places, 203 transitions, 600 flow [2021-06-11 09:38:19,151 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=303, PETRI_DIFFERENCE_MINUEND_FLOW=598, PETRI_DIFFERENCE_MINUEND_PLACES=67, 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=600, PETRI_PLACES=69, PETRI_TRANSITIONS=203} [2021-06-11 09:38:19,151 INFO L343 CegarLoopForPetriNet]: 92 programPoint places, -23 predicate places. [2021-06-11 09:38:19,151 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:38:19,151 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 203 transitions, 600 flow [2021-06-11 09:38:19,151 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 203 transitions, 600 flow [2021-06-11 09:38:19,152 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 69 places, 203 transitions, 600 flow [2021-06-11 09:38:19,328 INFO L129 PetriNetUnfolder]: 4371/5948 cut-off events. [2021-06-11 09:38:19,328 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:38:19,341 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5971 conditions, 5948 events. 4371/5948 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 26030 event pairs, 0 based on Foata normal form. 0/5948 useless extension candidates. Maximal degree in co-relation 5954. Up to 880 conditions per place. [2021-06-11 09:38:19,376 INFO L151 LiptonReduction]: Number of co-enabled transitions 4816 [2021-06-11 09:38:19,386 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:38:19,386 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:38:19,387 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 236 [2021-06-11 09:38:19,387 INFO L480 AbstractCegarLoop]: Abstraction has has 69 places, 203 transitions, 600 flow [2021-06-11 09:38:19,388 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 287.6666666666667) internal successors, (863), 3 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:38:19,388 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:38:19,388 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 09:38:19,388 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-11 09:38:19,388 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr14INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-06-11 09:38:19,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:38:19,389 INFO L82 PathProgramCache]: Analyzing trace with hash -1105824269, now seen corresponding path program 1 times [2021-06-11 09:38:19,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:38:19,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385316554] [2021-06-11 09:38:19,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:38:19,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:38:19,410 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:38:19,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:38:19,413 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:38:19,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:38:19,416 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:38:19,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:38:19,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:38:19,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385316554] [2021-06-11 09:38:19,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:38:19,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 09:38:19,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565297882] [2021-06-11 09:38:19,418 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:38:19,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:38:19,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:38:19,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:38:19,419 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 303 [2021-06-11 09:38:19,420 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 203 transitions, 600 flow. Second operand has 3 states, 3 states have (on average 287.6666666666667) internal successors, (863), 3 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:38:19,420 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:38:19,420 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 303 [2021-06-11 09:38:19,420 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:38:19,493 INFO L129 PetriNetUnfolder]: 1174/1708 cut-off events. [2021-06-11 09:38:19,493 INFO L130 PetriNetUnfolder]: For 489/489 co-relation queries the response was YES. [2021-06-11 09:38:19,497 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1748 conditions, 1708 events. 1174/1708 cut-off events. For 489/489 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 6899 event pairs, 0 based on Foata normal form. 474/2182 useless extension candidates. Maximal degree in co-relation 1730. Up to 280 conditions per place. [2021-06-11 09:38:19,502 INFO L132 encePairwiseOnDemand]: 289/303 looper letters, 2 selfloop transitions, 1 changer transitions 0/190 dead transitions. [2021-06-11 09:38:19,502 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 190 transitions, 567 flow [2021-06-11 09:38:19,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:38:19,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:38:19,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 877 transitions. [2021-06-11 09:38:19,505 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9647964796479648 [2021-06-11 09:38:19,505 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 877 transitions. [2021-06-11 09:38:19,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 877 transitions. [2021-06-11 09:38:19,505 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:38:19,505 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 877 transitions. [2021-06-11 09:38:19,507 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 292.3333333333333) internal successors, (877), 3 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:38:19,508 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:38:19,509 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:38:19,509 INFO L185 Difference]: Start difference. First operand has 69 places, 203 transitions, 600 flow. Second operand 3 states and 877 transitions. [2021-06-11 09:38:19,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 190 transitions, 567 flow [2021-06-11 09:38:19,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 190 transitions, 566 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-11 09:38:19,513 INFO L241 Difference]: Finished difference. Result has 70 places, 190 transitions, 562 flow [2021-06-11 09:38:19,513 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=303, PETRI_DIFFERENCE_MINUEND_FLOW=560, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=562, PETRI_PLACES=70, PETRI_TRANSITIONS=190} [2021-06-11 09:38:19,513 INFO L343 CegarLoopForPetriNet]: 92 programPoint places, -22 predicate places. [2021-06-11 09:38:19,513 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:38:19,514 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 70 places, 190 transitions, 562 flow [2021-06-11 09:38:19,514 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 70 places, 190 transitions, 562 flow [2021-06-11 09:38:19,515 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 70 places, 190 transitions, 562 flow [2021-06-11 09:38:19,570 INFO L129 PetriNetUnfolder]: 1174/1708 cut-off events. [2021-06-11 09:38:19,570 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:38:19,573 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1732 conditions, 1708 events. 1174/1708 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 6752 event pairs, 0 based on Foata normal form. 0/1708 useless extension candidates. Maximal degree in co-relation 1715. Up to 280 conditions per place. [2021-06-11 09:38:19,581 INFO L151 LiptonReduction]: Number of co-enabled transitions 3512 [2021-06-11 09:38:19,590 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:38:19,590 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:38:19,590 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 77 [2021-06-11 09:38:19,591 INFO L480 AbstractCegarLoop]: Abstraction has has 70 places, 190 transitions, 562 flow [2021-06-11 09:38:19,591 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 287.6666666666667) internal successors, (863), 3 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:38:19,591 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:38:19,591 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 09:38:19,591 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-11 09:38:19,592 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr14INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-06-11 09:38:19,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:38:19,592 INFO L82 PathProgramCache]: Analyzing trace with hash 1433291429, now seen corresponding path program 1 times [2021-06-11 09:38:19,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:38:19,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315355242] [2021-06-11 09:38:19,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:38:19,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:38:19,608 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:38:19,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:38:19,609 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:38:19,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:38:19,611 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:38:19,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:38:19,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:38:19,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315355242] [2021-06-11 09:38:19,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:38:19,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 09:38:19,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215631379] [2021-06-11 09:38:19,613 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:38:19,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:38:19,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:38:19,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:38:19,614 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 303 [2021-06-11 09:38:19,615 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 190 transitions, 562 flow. Second operand has 3 states, 3 states have (on average 287.6666666666667) internal successors, (863), 3 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:38:19,615 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:38:19,615 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 303 [2021-06-11 09:38:19,615 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:38:19,650 INFO L129 PetriNetUnfolder]: 355/555 cut-off events. [2021-06-11 09:38:19,651 INFO L130 PetriNetUnfolder]: For 169/169 co-relation queries the response was YES. [2021-06-11 09:38:19,652 INFO L84 FinitePrefix]: Finished finitePrefix Result has 582 conditions, 555 events. 355/555 cut-off events. For 169/169 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2133 event pairs, 0 based on Foata normal form. 168/723 useless extension candidates. Maximal degree in co-relation 564. Up to 140 conditions per place. [2021-06-11 09:38:19,654 INFO L132 encePairwiseOnDemand]: 288/303 looper letters, 1 selfloop transitions, 1 changer transitions 0/126 dead transitions. [2021-06-11 09:38:19,654 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 126 transitions, 374 flow [2021-06-11 09:38:19,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:38:19,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:38:19,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 877 transitions. [2021-06-11 09:38:19,656 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9647964796479648 [2021-06-11 09:38:19,656 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 877 transitions. [2021-06-11 09:38:19,656 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 877 transitions. [2021-06-11 09:38:19,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:38:19,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 877 transitions. [2021-06-11 09:38:19,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 292.3333333333333) internal successors, (877), 3 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:38:19,659 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:38:19,660 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:38:19,660 INFO L185 Difference]: Start difference. First operand has 70 places, 190 transitions, 562 flow. Second operand 3 states and 877 transitions. [2021-06-11 09:38:19,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 126 transitions, 374 flow [2021-06-11 09:38:19,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 126 transitions, 373 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-11 09:38:19,662 INFO L241 Difference]: Finished difference. Result has 71 places, 126 transitions, 371 flow [2021-06-11 09:38:19,662 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=303, PETRI_DIFFERENCE_MINUEND_FLOW=369, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=371, PETRI_PLACES=71, PETRI_TRANSITIONS=126} [2021-06-11 09:38:19,663 INFO L343 CegarLoopForPetriNet]: 92 programPoint places, -21 predicate places. [2021-06-11 09:38:19,663 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:38:19,663 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 71 places, 126 transitions, 371 flow [2021-06-11 09:38:19,663 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 71 places, 126 transitions, 371 flow [2021-06-11 09:38:19,664 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 71 places, 126 transitions, 371 flow [2021-06-11 09:38:19,684 INFO L129 PetriNetUnfolder]: 355/555 cut-off events. [2021-06-11 09:38:19,685 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:38:19,686 INFO L84 FinitePrefix]: Finished finitePrefix Result has 580 conditions, 555 events. 355/555 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1896 event pairs, 0 based on Foata normal form. 0/555 useless extension candidates. Maximal degree in co-relation 563. Up to 140 conditions per place. [2021-06-11 09:38:19,690 INFO L151 LiptonReduction]: Number of co-enabled transitions 2240 [2021-06-11 09:38:19,695 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:38:19,696 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:38:19,696 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 33 [2021-06-11 09:38:19,696 INFO L480 AbstractCegarLoop]: Abstraction has has 71 places, 126 transitions, 371 flow [2021-06-11 09:38:19,697 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 287.6666666666667) internal successors, (863), 3 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:38:19,697 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:38:19,697 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 09:38:19,697 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-11 09:38:19,697 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr14INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-06-11 09:38:19,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:38:19,698 INFO L82 PathProgramCache]: Analyzing trace with hash -1901519683, now seen corresponding path program 1 times [2021-06-11 09:38:19,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:38:19,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495995455] [2021-06-11 09:38:19,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:38:19,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:38:19,713 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:38:19,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:38:19,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:38:19,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:38:19,717 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:38:19,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:38:19,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:38:19,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495995455] [2021-06-11 09:38:19,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:38:19,718 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 09:38:19,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616710662] [2021-06-11 09:38:19,718 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:38:19,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:38:19,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:38:19,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:38:19,720 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 303 [2021-06-11 09:38:19,720 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 126 transitions, 371 flow. Second operand has 3 states, 3 states have (on average 287.6666666666667) internal successors, (863), 3 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:38:19,720 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:38:19,720 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 303 [2021-06-11 09:38:19,721 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:38:19,739 INFO L129 PetriNetUnfolder]: 129/232 cut-off events. [2021-06-11 09:38:19,740 INFO L130 PetriNetUnfolder]: For 68/68 co-relation queries the response was YES. [2021-06-11 09:38:19,740 INFO L84 FinitePrefix]: Finished finitePrefix Result has 260 conditions, 232 events. 129/232 cut-off events. For 68/68 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 612 event pairs, 0 based on Foata normal form. 67/299 useless extension candidates. Maximal degree in co-relation 242. Up to 60 conditions per place. [2021-06-11 09:38:19,741 INFO L132 encePairwiseOnDemand]: 292/303 looper letters, 1 selfloop transitions, 1 changer transitions 0/76 dead transitions. [2021-06-11 09:38:19,741 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 76 transitions, 225 flow [2021-06-11 09:38:19,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:38:19,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:38:19,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 873 transitions. [2021-06-11 09:38:19,743 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9603960396039604 [2021-06-11 09:38:19,743 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 873 transitions. [2021-06-11 09:38:19,743 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 873 transitions. [2021-06-11 09:38:19,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:38:19,744 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 873 transitions. [2021-06-11 09:38:19,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 291.0) internal successors, (873), 3 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:38:19,746 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:38:19,747 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:38:19,747 INFO L185 Difference]: Start difference. First operand has 71 places, 126 transitions, 371 flow. Second operand 3 states and 873 transitions. [2021-06-11 09:38:19,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 76 transitions, 225 flow [2021-06-11 09:38:19,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 76 transitions, 224 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-11 09:38:19,748 INFO L241 Difference]: Finished difference. Result has 72 places, 76 transitions, 222 flow [2021-06-11 09:38:19,749 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=303, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=222, PETRI_PLACES=72, PETRI_TRANSITIONS=76} [2021-06-11 09:38:19,749 INFO L343 CegarLoopForPetriNet]: 92 programPoint places, -20 predicate places. [2021-06-11 09:38:19,749 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:38:19,749 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 72 places, 76 transitions, 222 flow [2021-06-11 09:38:19,749 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 72 places, 76 transitions, 222 flow [2021-06-11 09:38:19,750 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 72 places, 76 transitions, 222 flow [2021-06-11 09:38:19,759 INFO L129 PetriNetUnfolder]: 129/232 cut-off events. [2021-06-11 09:38:19,759 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:38:19,760 INFO L84 FinitePrefix]: Finished finitePrefix Result has 258 conditions, 232 events. 129/232 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 655 event pairs, 0 based on Foata normal form. 0/232 useless extension candidates. Maximal degree in co-relation 241. Up to 60 conditions per place. [2021-06-11 09:38:19,761 INFO L151 LiptonReduction]: Number of co-enabled transitions 1440 [2021-06-11 09:38:19,764 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:38:19,764 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:38:19,764 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 15 [2021-06-11 09:38:19,765 INFO L480 AbstractCegarLoop]: Abstraction has has 72 places, 76 transitions, 222 flow [2021-06-11 09:38:19,765 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 287.6666666666667) internal successors, (863), 3 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:38:19,765 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:38:19,765 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 09:38:19,765 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-11 09:38:19,765 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr14INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-06-11 09:38:19,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:38:19,766 INFO L82 PathProgramCache]: Analyzing trace with hash -1119967421, now seen corresponding path program 1 times [2021-06-11 09:38:19,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:38:19,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962496372] [2021-06-11 09:38:19,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:38:19,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:38:19,781 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:38:19,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:38:19,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:38:19,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:38:19,785 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:38:19,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:38:19,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:38:19,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962496372] [2021-06-11 09:38:19,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:38:19,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 09:38:19,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459592254] [2021-06-11 09:38:19,786 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:38:19,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:38:19,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:38:19,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:38:19,788 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 303 [2021-06-11 09:38:19,788 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 76 transitions, 222 flow. Second operand has 3 states, 3 states have (on average 287.6666666666667) internal successors, (863), 3 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:38:19,788 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:38:19,788 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 303 [2021-06-11 09:38:19,789 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:38:19,800 INFO L129 PetriNetUnfolder]: 54/131 cut-off events. [2021-06-11 09:38:19,800 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2021-06-11 09:38:19,800 INFO L84 FinitePrefix]: Finished finitePrefix Result has 165 conditions, 131 events. 54/131 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 278 event pairs, 0 based on Foata normal form. 26/157 useless extension candidates. Maximal degree in co-relation 146. Up to 30 conditions per place. [2021-06-11 09:38:19,801 INFO L132 encePairwiseOnDemand]: 298/303 looper letters, 2 selfloop transitions, 1 changer transitions 0/72 dead transitions. [2021-06-11 09:38:19,801 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 72 transitions, 216 flow [2021-06-11 09:38:19,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:38:19,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:38:19,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 868 transitions. [2021-06-11 09:38:19,803 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9548954895489549 [2021-06-11 09:38:19,803 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 868 transitions. [2021-06-11 09:38:19,803 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 868 transitions. [2021-06-11 09:38:19,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:38:19,803 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 868 transitions. [2021-06-11 09:38:19,805 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 289.3333333333333) internal successors, (868), 3 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:38:19,806 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:38:19,806 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:38:19,806 INFO L185 Difference]: Start difference. First operand has 72 places, 76 transitions, 222 flow. Second operand 3 states and 868 transitions. [2021-06-11 09:38:19,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 72 transitions, 216 flow [2021-06-11 09:38:19,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 72 transitions, 215 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-11 09:38:19,808 INFO L241 Difference]: Finished difference. Result has 73 places, 72 transitions, 211 flow [2021-06-11 09:38:19,808 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=303, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=211, PETRI_PLACES=73, PETRI_TRANSITIONS=72} [2021-06-11 09:38:19,808 INFO L343 CegarLoopForPetriNet]: 92 programPoint places, -19 predicate places. [2021-06-11 09:38:19,808 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:38:19,808 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 73 places, 72 transitions, 211 flow [2021-06-11 09:38:19,809 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 73 places, 72 transitions, 211 flow [2021-06-11 09:38:19,809 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 73 places, 72 transitions, 211 flow [2021-06-11 09:38:19,815 INFO L129 PetriNetUnfolder]: 54/131 cut-off events. [2021-06-11 09:38:19,815 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:38:19,816 INFO L84 FinitePrefix]: Finished finitePrefix Result has 158 conditions, 131 events. 54/131 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 292 event pairs, 0 based on Foata normal form. 0/131 useless extension candidates. Maximal degree in co-relation 145. Up to 30 conditions per place. [2021-06-11 09:38:19,816 INFO L151 LiptonReduction]: Number of co-enabled transitions 1288 [2021-06-11 09:38:19,818 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:38:19,818 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:38:19,818 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 10 [2021-06-11 09:38:19,819 INFO L480 AbstractCegarLoop]: Abstraction has has 73 places, 72 transitions, 211 flow [2021-06-11 09:38:19,819 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 287.6666666666667) internal successors, (863), 3 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:38:19,819 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:38:19,819 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 09:38:19,819 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-11 09:38:19,820 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr14INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-06-11 09:38:19,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:38:19,820 INFO L82 PathProgramCache]: Analyzing trace with hash -939585247, now seen corresponding path program 1 times [2021-06-11 09:38:19,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:38:19,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564964730] [2021-06-11 09:38:19,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:38:19,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:38:19,928 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:38:19,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:38:19,939 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:38:19,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:38:19,952 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 09:38:19,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 09:38:19,977 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-11 09:38:19,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-11 09:38:20,020 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-11 09:38:20,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-11 09:38:20,064 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 09:38:20,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 09:38:20,112 INFO L142 QuantifierPusher]: treesize reduction 36, result has 58.6 percent of original size [2021-06-11 09:38:20,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-06-11 09:38:20,172 INFO L142 QuantifierPusher]: treesize reduction 45, result has 59.1 percent of original size [2021-06-11 09:38:20,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-06-11 09:38:20,254 INFO L142 QuantifierPusher]: treesize reduction 54, result has 57.5 percent of original size [2021-06-11 09:38:20,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-06-11 09:38:20,335 INFO L142 QuantifierPusher]: treesize reduction 63, result has 54.3 percent of original size [2021-06-11 09:38:20,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-06-11 09:38:20,445 INFO L142 QuantifierPusher]: treesize reduction 72, result has 53.5 percent of original size [2021-06-11 09:38:20,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 83 [2021-06-11 09:38:20,557 INFO L142 QuantifierPusher]: treesize reduction 81, result has 52.9 percent of original size [2021-06-11 09:38:20,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 91 [2021-06-11 09:38:20,684 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2021-06-11 09:38:20,703 INFO L142 QuantifierPusher]: treesize reduction 90, result has 52.4 percent of original size [2021-06-11 09:38:20,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 99 [2021-06-11 09:38:20,840 INFO L142 QuantifierPusher]: treesize reduction 108, result has 48.8 percent of original size [2021-06-11 09:38:20,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-06-11 09:38:20,940 INFO L142 QuantifierPusher]: treesize reduction 117, result has 48.7 percent of original size [2021-06-11 09:38:20,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 111 [2021-06-11 09:38:21,056 INFO L142 QuantifierPusher]: treesize reduction 126, result has 47.3 percent of original size [2021-06-11 09:38:21,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 113 [2021-06-11 09:38:21,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:38:21,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564964730] [2021-06-11 09:38:21,143 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:38:21,143 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-11 09:38:21,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793353408] [2021-06-11 09:38:21,143 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-11 09:38:21,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:38:21,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-11 09:38:21,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2021-06-11 09:38:21,147 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 303 [2021-06-11 09:38:21,150 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 72 transitions, 211 flow. Second operand has 17 states, 17 states have (on average 271.94117647058823) internal successors, (4623), 17 states have internal predecessors, (4623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:38:21,150 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:38:21,150 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 303 [2021-06-11 09:38:21,150 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand