/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_14.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-0e22065b97d0a1f8b3904e080cebe0f05e88d2b7-0e22065 [2021-06-11 09:35:28,465 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-11 09:35:28,467 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-11 09:35:28,488 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-11 09:35:28,488 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-11 09:35:28,491 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-11 09:35:28,494 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-11 09:35:28,500 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-11 09:35:28,502 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-11 09:35:28,509 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-11 09:35:28,510 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-11 09:35:28,510 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-11 09:35:28,511 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-11 09:35:28,511 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-11 09:35:28,525 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-11 09:35:28,526 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-11 09:35:28,526 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-11 09:35:28,527 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-11 09:35:28,527 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-11 09:35:28,528 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-11 09:35:28,529 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-11 09:35:28,530 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-11 09:35:28,531 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-11 09:35:28,531 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-11 09:35:28,532 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-06-11 09:35:28,533 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-11 09:35:28,533 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-11 09:35:28,533 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-11 09:35:28,534 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-11 09:35:28,534 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-06-11 09:35:28,534 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-11 09:35:28,535 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-11 09:35:28,535 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-11 09:35:28,535 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-11 09:35:28,536 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-11 09:35:28,536 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-11 09:35:28,537 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-11 09:35:28,537 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-11 09:35:28,537 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-11 09:35:28,537 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-11 09:35:28,538 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-11 09:35:28,553 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 09:35:28,567 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-11 09:35:28,567 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-11 09:35:28,568 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-11 09:35:28,568 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-11 09:35:28,568 INFO L138 SettingsManager]: * Use SBE=true [2021-06-11 09:35:28,568 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-11 09:35:28,569 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-11 09:35:28,569 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-11 09:35:28,569 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-11 09:35:28,569 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-11 09:35:28,569 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-11 09:35:28,569 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-11 09:35:28,569 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-11 09:35:28,569 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-11 09:35:28,569 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-11 09:35:28,569 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-11 09:35:28,570 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-11 09:35:28,570 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-11 09:35:28,570 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-11 09:35:28,570 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-11 09:35:28,570 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-11 09:35:28,570 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-11 09:35:28,570 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-11 09:35:28,570 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-11 09:35:28,570 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-11 09:35:28,571 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-11 09:35:28,571 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-11 09:35:28,571 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-11 09:35:28,571 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-06-11 09:35:28,571 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-11 09:35:28,795 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-11 09:35:28,809 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-11 09:35:28,811 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-11 09:35:28,812 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-11 09:35:28,812 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-11 09:35:28,813 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_14.bpl [2021-06-11 09:35:28,813 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_14.bpl' [2021-06-11 09:35:29,038 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-11 09:35:29,279 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-11 09:35:29,280 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-11 09:35:29,281 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-11 09:35:29,281 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-11 09:35:29,289 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 09:35:29" (1/1) ... [2021-06-11 09:35:29,294 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 09:35:29" (1/1) ... [2021-06-11 09:35:29,299 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-11 09:35:29,300 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-11 09:35:29,301 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-11 09:35:29,301 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-11 09:35:29,306 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 09:35:29" (1/1) ... [2021-06-11 09:35:29,306 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 09:35:29" (1/1) ... [2021-06-11 09:35:29,307 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 09:35:29" (1/1) ... [2021-06-11 09:35:29,308 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 09:35:29" (1/1) ... [2021-06-11 09:35:29,311 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 09:35:29" (1/1) ... [2021-06-11 09:35:29,312 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 09:35:29" (1/1) ... [2021-06-11 09:35:29,313 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 09:35:29" (1/1) ... [2021-06-11 09:35:29,316 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-11 09:35:29,318 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-11 09:35:29,318 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-11 09:35:29,318 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-11 09:35:29,319 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 09:35:29" (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 09:35:29,378 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2021-06-11 09:35:29,378 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2021-06-11 09:35:29,380 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2021-06-11 09:35:29,380 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2021-06-11 09:35:29,380 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2021-06-11 09:35:29,380 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2021-06-11 09:35:29,380 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2021-06-11 09:35:29,380 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2021-06-11 09:35:29,380 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2021-06-11 09:35:29,380 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2021-06-11 09:35:29,380 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2021-06-11 09:35:29,380 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2021-06-11 09:35:29,381 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2021-06-11 09:35:29,381 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2021-06-11 09:35:29,381 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2021-06-11 09:35:29,381 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_9 given in one single declaration [2021-06-11 09:35:29,381 INFO L130 BoogieDeclarations]: Found specification of procedure set_9 [2021-06-11 09:35:29,381 INFO L138 BoogieDeclarations]: Found implementation of procedure set_9 [2021-06-11 09:35:29,381 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-11 09:35:29,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-11 09:35:29,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-11 09:35:29,381 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_12 given in one single declaration [2021-06-11 09:35:29,381 INFO L130 BoogieDeclarations]: Found specification of procedure set_12 [2021-06-11 09:35:29,382 INFO L138 BoogieDeclarations]: Found implementation of procedure set_12 [2021-06-11 09:35:29,382 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_5 given in one single declaration [2021-06-11 09:35:29,382 INFO L130 BoogieDeclarations]: Found specification of procedure set_5 [2021-06-11 09:35:29,382 INFO L138 BoogieDeclarations]: Found implementation of procedure set_5 [2021-06-11 09:35:29,382 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_13 given in one single declaration [2021-06-11 09:35:29,382 INFO L130 BoogieDeclarations]: Found specification of procedure set_13 [2021-06-11 09:35:29,382 INFO L138 BoogieDeclarations]: Found implementation of procedure set_13 [2021-06-11 09:35:29,382 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_6 given in one single declaration [2021-06-11 09:35:29,382 INFO L130 BoogieDeclarations]: Found specification of procedure set_6 [2021-06-11 09:35:29,382 INFO L138 BoogieDeclarations]: Found implementation of procedure set_6 [2021-06-11 09:35:29,382 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_10 given in one single declaration [2021-06-11 09:35:29,383 INFO L130 BoogieDeclarations]: Found specification of procedure set_10 [2021-06-11 09:35:29,383 INFO L138 BoogieDeclarations]: Found implementation of procedure set_10 [2021-06-11 09:35:29,383 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_7 given in one single declaration [2021-06-11 09:35:29,383 INFO L130 BoogieDeclarations]: Found specification of procedure set_7 [2021-06-11 09:35:29,383 INFO L138 BoogieDeclarations]: Found implementation of procedure set_7 [2021-06-11 09:35:29,383 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_11 given in one single declaration [2021-06-11 09:35:29,383 INFO L130 BoogieDeclarations]: Found specification of procedure set_11 [2021-06-11 09:35:29,383 INFO L138 BoogieDeclarations]: Found implementation of procedure set_11 [2021-06-11 09:35:29,383 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_8 given in one single declaration [2021-06-11 09:35:29,383 INFO L130 BoogieDeclarations]: Found specification of procedure set_8 [2021-06-11 09:35:29,383 INFO L138 BoogieDeclarations]: Found implementation of procedure set_8 [2021-06-11 09:35:29,384 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 09:35:29,555 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-11 09:35:29,555 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-11 09:35:29,557 INFO L202 PluginConnector]: Adding new model example_14.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.06 09:35:29 BoogieIcfgContainer [2021-06-11 09:35:29,557 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-11 09:35:29,558 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-11 09:35:29,558 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-11 09:35:29,560 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-11 09:35:29,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 09:35:29" (1/2) ... [2021-06-11 09:35:29,561 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24f835ce and model type example_14.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.06 09:35:29, skipping insertion in model container [2021-06-11 09:35:29,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_14.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.06 09:35:29" (2/2) ... [2021-06-11 09:35:29,562 INFO L111 eAbstractionObserver]: Analyzing ICFG example_14.bpl [2021-06-11 09:35:29,573 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-11 09:35:29,575 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-06-11 09:35:29,576 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-11 09:35:29,794 INFO L149 ThreadInstanceAdder]: Constructed 196 joinOtherThreadTransitions. [2021-06-11 09:35:29,807 INFO L253 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2021-06-11 09:35:29,833 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:35:29,833 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:35:29,833 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:35:29,833 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:35:29,833 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:35:29,833 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:35:29,833 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:35:29,833 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:35:29,848 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 116 places, 255 transitions, 1168 flow [2021-06-11 09:35:36,747 INFO L129 PetriNetUnfolder]: 98305/114733 cut-off events. [2021-06-11 09:35:36,747 INFO L130 PetriNetUnfolder]: For 114688/114688 co-relation queries the response was YES. [2021-06-11 09:35:37,501 INFO L84 FinitePrefix]: Finished finitePrefix Result has 229464 conditions, 114733 events. 98305/114733 cut-off events. For 114688/114688 co-relation queries the response was YES. Maximal size of possible extension queue 3628. Compared 465637 event pairs, 0 based on Foata normal form. 0/114732 useless extension candidates. Maximal degree in co-relation 106563. Up to 24024 conditions per place. [2021-06-11 09:35:37,501 INFO L82 GeneralOperation]: Start removeDead. Operand has 116 places, 255 transitions, 1168 flow [2021-06-11 09:35:38,271 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 100 places, 239 transitions, 1108 flow [2021-06-11 09:35:38,272 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:35:38,280 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 100 places, 239 transitions, 1108 flow [2021-06-11 09:35:38,282 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 100 places, 239 transitions, 1108 flow [2021-06-11 09:35:38,284 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 100 places, 239 transitions, 1108 flow [2021-06-11 09:35:44,257 INFO L129 PetriNetUnfolder]: 98305/114731 cut-off events. [2021-06-11 09:35:44,257 INFO L130 PetriNetUnfolder]: For 114688/114688 co-relation queries the response was YES. [2021-06-11 09:35:44,998 INFO L84 FinitePrefix]: Finished finitePrefix Result has 229462 conditions, 114731 events. 98305/114731 cut-off events. For 114688/114688 co-relation queries the response was YES. Maximal size of possible extension queue 3628. Compared 480869 event pairs, 0 based on Foata normal form. 0/114731 useless extension candidates. Maximal degree in co-relation 106563. Up to 24024 conditions per place. [2021-06-11 09:35:47,190 INFO L151 LiptonReduction]: Number of co-enabled transitions 10556 [2021-06-11 09:35:47,376 INFO L163 LiptonReduction]: Checked pairs total: 2821 [2021-06-11 09:35:47,376 INFO L165 LiptonReduction]: Total number of compositions: 14 [2021-06-11 09:35:47,377 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 9106 [2021-06-11 09:35:52,481 INFO L129 PetriNetUnfolder]: 98305/114716 cut-off events. [2021-06-11 09:35:52,481 INFO L130 PetriNetUnfolder]: For 114688/114688 co-relation queries the response was YES. [2021-06-11 09:35:52,481 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:35:52,482 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 09:35:52,482 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-06-11 09:35:52,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:35:52,485 INFO L82 PathProgramCache]: Analyzing trace with hash 1070435327, now seen corresponding path program 1 times [2021-06-11 09:35:52,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:35:52,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966294013] [2021-06-11 09:35:52,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:35:52,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:35:52,615 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:35:52,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:35:52,623 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:35:52,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:35:52,627 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:35:52,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:35:52,628 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 09:35:52,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966294013] [2021-06-11 09:35:52,629 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:35:52,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 09:35:52,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743065152] [2021-06-11 09:35:52,635 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:35:52,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:35:52,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:35:52,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:35:52,647 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 269 [2021-06-11 09:35:52,650 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 225 transitions, 1080 flow. Second operand has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:35:52,651 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:35:52,651 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 269 [2021-06-11 09:35:52,651 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:35:59,033 INFO L129 PetriNetUnfolder]: 94418/110452 cut-off events. [2021-06-11 09:35:59,033 INFO L130 PetriNetUnfolder]: For 127186/127186 co-relation queries the response was YES. [2021-06-11 09:35:59,593 INFO L84 FinitePrefix]: Finished finitePrefix Result has 228734 conditions, 110452 events. 94418/110452 cut-off events. For 127186/127186 co-relation queries the response was YES. Maximal size of possible extension queue 3628. Compared 540288 event pairs, 0 based on Foata normal form. 378/110830 useless extension candidates. Maximal degree in co-relation 108761. Up to 24024 conditions per place. [2021-06-11 09:36:00,059 INFO L132 encePairwiseOnDemand]: 264/269 looper letters, 10 selfloop transitions, 1 changer transitions 0/221 dead transitions. [2021-06-11 09:36:00,059 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 221 transitions, 1082 flow [2021-06-11 09:36:00,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:36:00,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:36:00,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 777 transitions. [2021-06-11 09:36:00,069 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9628252788104089 [2021-06-11 09:36:00,069 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 777 transitions. [2021-06-11 09:36:00,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 777 transitions. [2021-06-11 09:36:00,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:36:00,072 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 777 transitions. [2021-06-11 09:36:00,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 259.0) internal successors, (777), 3 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:36:00,079 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:36:00,080 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:36:00,081 INFO L185 Difference]: Start difference. First operand has 86 places, 225 transitions, 1080 flow. Second operand 3 states and 777 transitions. [2021-06-11 09:36:00,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 221 transitions, 1082 flow [2021-06-11 09:36:01,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 221 transitions, 670 flow, removed 0 selfloop flow, removed 28 redundant places. [2021-06-11 09:36:01,098 INFO L241 Difference]: Finished difference. Result has 60 places, 221 transitions, 650 flow [2021-06-11 09:36:01,099 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=648, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=650, PETRI_PLACES=60, PETRI_TRANSITIONS=221} [2021-06-11 09:36:01,100 INFO L343 CegarLoopForPetriNet]: 86 programPoint places, -26 predicate places. [2021-06-11 09:36:01,100 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:36:01,100 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 60 places, 221 transitions, 650 flow [2021-06-11 09:36:01,100 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 60 places, 221 transitions, 650 flow [2021-06-11 09:36:01,101 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 60 places, 221 transitions, 650 flow [2021-06-11 09:36:04,895 INFO L129 PetriNetUnfolder]: 94418/110452 cut-off events. [2021-06-11 09:36:04,895 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:36:05,173 INFO L84 FinitePrefix]: Finished finitePrefix Result has 110469 conditions, 110452 events. 94418/110452 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3628. Compared 460144 event pairs, 0 based on Foata normal form. 0/110452 useless extension candidates. Maximal degree in co-relation 110456. Up to 24024 conditions per place. [2021-06-11 09:36:06,255 INFO L151 LiptonReduction]: Number of co-enabled transitions 4992 [2021-06-11 09:36:06,271 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:36:06,271 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:36:06,271 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 5171 [2021-06-11 09:36:06,272 INFO L480 AbstractCegarLoop]: Abstraction has has 60 places, 221 transitions, 650 flow [2021-06-11 09:36:06,273 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:36:06,273 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:36:06,273 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 09:36:06,273 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-11 09:36:06,273 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-06-11 09:36:06,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:36:06,274 INFO L82 PathProgramCache]: Analyzing trace with hash 69320485, now seen corresponding path program 1 times [2021-06-11 09:36:06,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:36:06,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353091766] [2021-06-11 09:36:06,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:36:06,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:36:06,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:36:06,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:36:06,291 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:36:06,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:36:06,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:36:06,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:36:06,294 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 09:36:06,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353091766] [2021-06-11 09:36:06,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:36:06,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 09:36:06,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949502894] [2021-06-11 09:36:06,295 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:36:06,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:36:06,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:36:06,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:36:06,296 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 269 [2021-06-11 09:36:06,297 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 221 transitions, 650 flow. Second operand has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:36:06,297 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:36:06,297 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 269 [2021-06-11 09:36:06,297 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:36:08,105 INFO L129 PetriNetUnfolder]: 43300/51599 cut-off events. [2021-06-11 09:36:08,105 INFO L130 PetriNetUnfolder]: For 7893/7893 co-relation queries the response was YES. [2021-06-11 09:36:08,205 INFO L84 FinitePrefix]: Finished finitePrefix Result has 51996 conditions, 51599 events. 43300/51599 cut-off events. For 7893/7893 co-relation queries the response was YES. Maximal size of possible extension queue 1912. Compared 251982 event pairs, 0 based on Foata normal form. 7515/59114 useless extension candidates. Maximal degree in co-relation 51982. Up to 12012 conditions per place. [2021-06-11 09:36:08,349 INFO L132 encePairwiseOnDemand]: 258/269 looper letters, 4 selfloop transitions, 1 changer transitions 0/211 dead transitions. [2021-06-11 09:36:08,350 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 211 transitions, 630 flow [2021-06-11 09:36:08,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:36:08,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:36:08,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 777 transitions. [2021-06-11 09:36:08,351 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9628252788104089 [2021-06-11 09:36:08,352 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 777 transitions. [2021-06-11 09:36:08,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 777 transitions. [2021-06-11 09:36:08,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:36:08,352 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 777 transitions. [2021-06-11 09:36:08,353 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 259.0) internal successors, (777), 3 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:36:08,354 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:36:08,355 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:36:08,355 INFO L185 Difference]: Start difference. First operand has 60 places, 221 transitions, 650 flow. Second operand 3 states and 777 transitions. [2021-06-11 09:36:08,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 211 transitions, 630 flow [2021-06-11 09:36:08,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 211 transitions, 629 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-11 09:36:08,364 INFO L241 Difference]: Finished difference. Result has 61 places, 211 transitions, 621 flow [2021-06-11 09:36:08,364 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=619, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=621, PETRI_PLACES=61, PETRI_TRANSITIONS=211} [2021-06-11 09:36:08,364 INFO L343 CegarLoopForPetriNet]: 86 programPoint places, -25 predicate places. [2021-06-11 09:36:08,364 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:36:08,365 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 211 transitions, 621 flow [2021-06-11 09:36:08,365 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 61 places, 211 transitions, 621 flow [2021-06-11 09:36:08,365 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 61 places, 211 transitions, 621 flow [2021-06-11 09:36:09,756 INFO L129 PetriNetUnfolder]: 43300/51599 cut-off events. [2021-06-11 09:36:09,756 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:36:09,899 INFO L84 FinitePrefix]: Finished finitePrefix Result has 51617 conditions, 51599 events. 43300/51599 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1912. Compared 214155 event pairs, 0 based on Foata normal form. 0/51599 useless extension candidates. Maximal degree in co-relation 51604. Up to 12012 conditions per place. [2021-06-11 09:36:10,425 INFO L151 LiptonReduction]: Number of co-enabled transitions 4732 [2021-06-11 09:36:10,438 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:36:10,439 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:36:10,439 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2075 [2021-06-11 09:36:10,439 INFO L480 AbstractCegarLoop]: Abstraction has has 61 places, 211 transitions, 621 flow [2021-06-11 09:36:10,440 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:36:10,440 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:36:10,440 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 09:36:10,440 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-11 09:36:10,440 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-06-11 09:36:10,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:36:10,441 INFO L82 PathProgramCache]: Analyzing trace with hash 222589655, now seen corresponding path program 1 times [2021-06-11 09:36:10,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:36:10,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628713996] [2021-06-11 09:36:10,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:36:10,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:36:10,555 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:36:10,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:36:10,556 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:36:10,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:36:10,558 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:36:10,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:36:10,559 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 09:36:10,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628713996] [2021-06-11 09:36:10,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:36:10,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 09:36:10,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169784394] [2021-06-11 09:36:10,560 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:36:10,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:36:10,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:36:10,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:36:10,561 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 269 [2021-06-11 09:36:10,561 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 211 transitions, 621 flow. Second operand has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:36:10,562 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:36:10,562 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 269 [2021-06-11 09:36:10,562 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:36:12,048 INFO L129 PetriNetUnfolder]: 37404/44976 cut-off events. [2021-06-11 09:36:12,048 INFO L130 PetriNetUnfolder]: For 3943/3943 co-relation queries the response was YES. [2021-06-11 09:36:12,145 INFO L84 FinitePrefix]: Finished finitePrefix Result has 48377 conditions, 44976 events. 37404/44976 cut-off events. For 3943/3943 co-relation queries the response was YES. Maximal size of possible extension queue 1912. Compared 220956 event pairs, 0 based on Foata normal form. 562/45538 useless extension candidates. Maximal degree in co-relation 48363. Up to 12012 conditions per place. [2021-06-11 09:36:12,267 INFO L132 encePairwiseOnDemand]: 263/269 looper letters, 9 selfloop transitions, 1 changer transitions 0/206 dead transitions. [2021-06-11 09:36:12,267 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 206 transitions, 626 flow [2021-06-11 09:36:12,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:36:12,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:36:12,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 777 transitions. [2021-06-11 09:36:12,269 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9628252788104089 [2021-06-11 09:36:12,269 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 777 transitions. [2021-06-11 09:36:12,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 777 transitions. [2021-06-11 09:36:12,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:36:12,270 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 777 transitions. [2021-06-11 09:36:12,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 259.0) internal successors, (777), 3 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:36:12,272 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:36:12,272 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:36:12,272 INFO L185 Difference]: Start difference. First operand has 61 places, 211 transitions, 621 flow. Second operand 3 states and 777 transitions. [2021-06-11 09:36:12,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 206 transitions, 626 flow [2021-06-11 09:36:12,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 206 transitions, 625 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-11 09:36:12,279 INFO L241 Difference]: Finished difference. Result has 62 places, 206 transitions, 607 flow [2021-06-11 09:36:12,279 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=605, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=607, PETRI_PLACES=62, PETRI_TRANSITIONS=206} [2021-06-11 09:36:12,279 INFO L343 CegarLoopForPetriNet]: 86 programPoint places, -24 predicate places. [2021-06-11 09:36:12,279 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:36:12,279 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 62 places, 206 transitions, 607 flow [2021-06-11 09:36:12,279 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 62 places, 206 transitions, 607 flow [2021-06-11 09:36:12,280 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 62 places, 206 transitions, 607 flow [2021-06-11 09:36:13,661 INFO L129 PetriNetUnfolder]: 37404/44976 cut-off events. [2021-06-11 09:36:13,661 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:36:13,743 INFO L84 FinitePrefix]: Finished finitePrefix Result has 44995 conditions, 44976 events. 37404/44976 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1912. Compared 192863 event pairs, 0 based on Foata normal form. 0/44976 useless extension candidates. Maximal degree in co-relation 44982. Up to 12012 conditions per place. [2021-06-11 09:36:13,938 INFO L151 LiptonReduction]: Number of co-enabled transitions 4602 [2021-06-11 09:36:13,949 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:36:13,949 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:36:13,949 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1670 [2021-06-11 09:36:13,950 INFO L480 AbstractCegarLoop]: Abstraction has has 62 places, 206 transitions, 607 flow [2021-06-11 09:36:13,950 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:36:13,950 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:36:13,950 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 09:36:13,951 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-11 09:36:13,951 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-06-11 09:36:13,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:36:13,951 INFO L82 PathProgramCache]: Analyzing trace with hash -909626815, now seen corresponding path program 1 times [2021-06-11 09:36:13,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:36:13,951 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616614391] [2021-06-11 09:36:13,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:36:13,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:36:13,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:36:13,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:36:13,966 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:36:13,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:36:13,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:36:13,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:36:13,968 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 09:36:13,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616614391] [2021-06-11 09:36:13,969 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:36:13,969 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 09:36:13,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939867701] [2021-06-11 09:36:13,969 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:36:13,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:36:13,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:36:13,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:36:13,970 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 269 [2021-06-11 09:36:13,970 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 206 transitions, 607 flow. Second operand has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:36:13,970 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:36:13,970 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 269 [2021-06-11 09:36:13,971 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:36:15,368 INFO L129 PetriNetUnfolder]: 36944/44460 cut-off events. [2021-06-11 09:36:15,368 INFO L130 PetriNetUnfolder]: For 3437/3437 co-relation queries the response was YES. [2021-06-11 09:36:15,503 INFO L84 FinitePrefix]: Finished finitePrefix Result has 47862 conditions, 44460 events. 36944/44460 cut-off events. For 3437/3437 co-relation queries the response was YES. Maximal size of possible extension queue 1912. Compared 221464 event pairs, 0 based on Foata normal form. 56/44516 useless extension candidates. Maximal degree in co-relation 47847. Up to 12012 conditions per place. [2021-06-11 09:36:15,633 INFO L132 encePairwiseOnDemand]: 265/269 looper letters, 11 selfloop transitions, 1 changer transitions 0/203 dead transitions. [2021-06-11 09:36:15,633 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 203 transitions, 622 flow [2021-06-11 09:36:15,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:36:15,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:36:15,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 777 transitions. [2021-06-11 09:36:15,635 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9628252788104089 [2021-06-11 09:36:15,635 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 777 transitions. [2021-06-11 09:36:15,635 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 777 transitions. [2021-06-11 09:36:15,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:36:15,635 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 777 transitions. [2021-06-11 09:36:15,636 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 259.0) internal successors, (777), 3 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:36:15,637 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:36:15,638 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:36:15,638 INFO L185 Difference]: Start difference. First operand has 62 places, 206 transitions, 607 flow. Second operand 3 states and 777 transitions. [2021-06-11 09:36:15,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 203 transitions, 622 flow [2021-06-11 09:36:15,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 203 transitions, 621 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-11 09:36:15,643 INFO L241 Difference]: Finished difference. Result has 63 places, 203 transitions, 599 flow [2021-06-11 09:36:15,643 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=597, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=599, PETRI_PLACES=63, PETRI_TRANSITIONS=203} [2021-06-11 09:36:15,643 INFO L343 CegarLoopForPetriNet]: 86 programPoint places, -23 predicate places. [2021-06-11 09:36:15,643 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:36:15,643 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 63 places, 203 transitions, 599 flow [2021-06-11 09:36:15,644 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 63 places, 203 transitions, 599 flow [2021-06-11 09:36:15,644 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 63 places, 203 transitions, 599 flow [2021-06-11 09:36:16,974 INFO L129 PetriNetUnfolder]: 36944/44460 cut-off events. [2021-06-11 09:36:16,974 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:36:17,078 INFO L84 FinitePrefix]: Finished finitePrefix Result has 44480 conditions, 44460 events. 36944/44460 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1951. Compared 190691 event pairs, 0 based on Foata normal form. 0/44460 useless extension candidates. Maximal degree in co-relation 44469. Up to 12012 conditions per place. [2021-06-11 09:36:17,302 INFO L151 LiptonReduction]: Number of co-enabled transitions 4524 [2021-06-11 09:36:17,312 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:36:17,312 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:36:17,312 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1669 [2021-06-11 09:36:17,313 INFO L480 AbstractCegarLoop]: Abstraction has has 63 places, 203 transitions, 599 flow [2021-06-11 09:36:17,313 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:36:17,313 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:36:17,313 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 09:36:17,313 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-11 09:36:17,313 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-06-11 09:36:17,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:36:17,314 INFO L82 PathProgramCache]: Analyzing trace with hash -1579367267, now seen corresponding path program 1 times [2021-06-11 09:36:17,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:36:17,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162707233] [2021-06-11 09:36:17,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:36:17,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:36:17,325 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:36:17,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:36:17,326 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:36:17,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:36:17,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:36:17,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:36:17,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:36:17,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162707233] [2021-06-11 09:36:17,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:36:17,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 09:36:17,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155315233] [2021-06-11 09:36:17,329 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:36:17,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:36:17,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:36:17,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:36:17,330 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 269 [2021-06-11 09:36:17,331 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 203 transitions, 599 flow. Second operand has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:36:17,331 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:36:17,331 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 269 [2021-06-11 09:36:17,331 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:36:18,130 INFO L129 PetriNetUnfolder]: 18413/22925 cut-off events. [2021-06-11 09:36:18,130 INFO L130 PetriNetUnfolder]: For 3391/3391 co-relation queries the response was YES. [2021-06-11 09:36:18,162 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23820 conditions, 22925 events. 18413/22925 cut-off events. For 3391/3391 co-relation queries the response was YES. Maximal size of possible extension queue 988. Compared 116085 event pairs, 0 based on Foata normal form. 2518/25443 useless extension candidates. Maximal degree in co-relation 23808. Up to 5544 conditions per place. [2021-06-11 09:36:18,215 INFO L132 encePairwiseOnDemand]: 260/269 looper letters, 6 selfloop transitions, 1 changer transitions 0/195 dead transitions. [2021-06-11 09:36:18,215 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 195 transitions, 589 flow [2021-06-11 09:36:18,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:36:18,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:36:18,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 777 transitions. [2021-06-11 09:36:18,216 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9628252788104089 [2021-06-11 09:36:18,216 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 777 transitions. [2021-06-11 09:36:18,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 777 transitions. [2021-06-11 09:36:18,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:36:18,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 777 transitions. [2021-06-11 09:36:18,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 259.0) internal successors, (777), 3 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:36:18,219 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:36:18,220 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:36:18,220 INFO L185 Difference]: Start difference. First operand has 63 places, 203 transitions, 599 flow. Second operand 3 states and 777 transitions. [2021-06-11 09:36:18,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 195 transitions, 589 flow [2021-06-11 09:36:18,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 195 transitions, 588 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-11 09:36:18,223 INFO L241 Difference]: Finished difference. Result has 64 places, 195 transitions, 576 flow [2021-06-11 09:36:18,223 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=574, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=576, PETRI_PLACES=64, PETRI_TRANSITIONS=195} [2021-06-11 09:36:18,223 INFO L343 CegarLoopForPetriNet]: 86 programPoint places, -22 predicate places. [2021-06-11 09:36:18,223 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:36:18,224 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 64 places, 195 transitions, 576 flow [2021-06-11 09:36:18,224 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 64 places, 195 transitions, 576 flow [2021-06-11 09:36:18,224 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 64 places, 195 transitions, 576 flow [2021-06-11 09:36:18,861 INFO L129 PetriNetUnfolder]: 18413/22925 cut-off events. [2021-06-11 09:36:18,861 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:36:18,886 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22946 conditions, 22925 events. 18413/22925 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1016. Compared 99985 event pairs, 0 based on Foata normal form. 0/22925 useless extension candidates. Maximal degree in co-relation 22935. Up to 5544 conditions per place. [2021-06-11 09:36:18,977 INFO L151 LiptonReduction]: Number of co-enabled transitions 4316 [2021-06-11 09:36:18,986 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:36:18,986 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:36:18,986 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 763 [2021-06-11 09:36:18,987 INFO L480 AbstractCegarLoop]: Abstraction has has 64 places, 195 transitions, 576 flow [2021-06-11 09:36:18,987 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:36:18,987 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:36:18,987 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 09:36:18,987 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-11 09:36:18,987 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-06-11 09:36:18,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:36:18,988 INFO L82 PathProgramCache]: Analyzing trace with hash 1559250705, now seen corresponding path program 1 times [2021-06-11 09:36:18,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:36:18,989 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436100331] [2021-06-11 09:36:18,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:36:18,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:36:19,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:36:19,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:36:19,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:36:19,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:36:19,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:36:19,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:36:19,004 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 09:36:19,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436100331] [2021-06-11 09:36:19,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:36:19,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 09:36:19,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056067698] [2021-06-11 09:36:19,005 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:36:19,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:36:19,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:36:19,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:36:19,005 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 269 [2021-06-11 09:36:19,006 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 195 transitions, 576 flow. Second operand has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:36:19,006 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:36:19,006 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 269 [2021-06-11 09:36:19,006 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:36:19,737 INFO L129 PetriNetUnfolder]: 18349/22852 cut-off events. [2021-06-11 09:36:19,737 INFO L130 PetriNetUnfolder]: For 1806/1806 co-relation queries the response was YES. [2021-06-11 09:36:19,763 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24672 conditions, 22852 events. 18349/22852 cut-off events. For 1806/1806 co-relation queries the response was YES. Maximal size of possible extension queue 988. Compared 114949 event pairs, 0 based on Foata normal form. 9/22861 useless extension candidates. Maximal degree in co-relation 24659. Up to 5544 conditions per place. [2021-06-11 09:36:19,812 INFO L132 encePairwiseOnDemand]: 266/269 looper letters, 12 selfloop transitions, 1 changer transitions 0/193 dead transitions. [2021-06-11 09:36:19,813 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 193 transitions, 596 flow [2021-06-11 09:36:19,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:36:19,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:36:19,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 777 transitions. [2021-06-11 09:36:19,814 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9628252788104089 [2021-06-11 09:36:19,814 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 777 transitions. [2021-06-11 09:36:19,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 777 transitions. [2021-06-11 09:36:19,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:36:19,815 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 777 transitions. [2021-06-11 09:36:19,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 259.0) internal successors, (777), 3 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:36:19,817 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:36:19,817 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:36:19,817 INFO L185 Difference]: Start difference. First operand has 64 places, 195 transitions, 576 flow. Second operand 3 states and 777 transitions. [2021-06-11 09:36:19,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 193 transitions, 596 flow [2021-06-11 09:36:19,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 193 transitions, 595 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-11 09:36:19,820 INFO L241 Difference]: Finished difference. Result has 65 places, 193 transitions, 571 flow [2021-06-11 09:36:19,820 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=569, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=571, PETRI_PLACES=65, PETRI_TRANSITIONS=193} [2021-06-11 09:36:19,820 INFO L343 CegarLoopForPetriNet]: 86 programPoint places, -21 predicate places. [2021-06-11 09:36:19,821 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:36:19,821 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 65 places, 193 transitions, 571 flow [2021-06-11 09:36:19,821 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 65 places, 193 transitions, 571 flow [2021-06-11 09:36:19,821 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 65 places, 193 transitions, 571 flow [2021-06-11 09:36:20,407 INFO L129 PetriNetUnfolder]: 18349/22852 cut-off events. [2021-06-11 09:36:20,407 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:36:20,473 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22874 conditions, 22852 events. 18349/22852 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1017. Compared 99552 event pairs, 0 based on Foata normal form. 0/22852 useless extension candidates. Maximal degree in co-relation 22865. Up to 5544 conditions per place. [2021-06-11 09:36:20,639 INFO L151 LiptonReduction]: Number of co-enabled transitions 4264 [2021-06-11 09:36:20,647 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:36:20,648 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:36:20,648 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 827 [2021-06-11 09:36:20,648 INFO L480 AbstractCegarLoop]: Abstraction has has 65 places, 193 transitions, 571 flow [2021-06-11 09:36:20,649 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:36:20,649 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:36:20,649 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 09:36:20,649 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-11 09:36:20,649 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-06-11 09:36:20,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:36:20,649 INFO L82 PathProgramCache]: Analyzing trace with hash -1245926739, now seen corresponding path program 1 times [2021-06-11 09:36:20,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:36:20,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370045473] [2021-06-11 09:36:20,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:36:20,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:36:20,662 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:36:20,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:36:20,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:36:20,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:36:20,665 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:36:20,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:36:20,665 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 09:36:20,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370045473] [2021-06-11 09:36:20,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:36:20,666 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 09:36:20,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469366181] [2021-06-11 09:36:20,666 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:36:20,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:36:20,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:36:20,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:36:20,667 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 269 [2021-06-11 09:36:20,668 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 193 transitions, 571 flow. Second operand has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:36:20,668 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:36:20,668 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 269 [2021-06-11 09:36:20,668 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:36:21,188 INFO L129 PetriNetUnfolder]: 13596/17307 cut-off events. [2021-06-11 09:36:21,189 INFO L130 PetriNetUnfolder]: For 1798/1798 co-relation queries the response was YES. [2021-06-11 09:36:21,229 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18666 conditions, 17307 events. 13596/17307 cut-off events. For 1798/1798 co-relation queries the response was YES. Maximal size of possible extension queue 814. Compared 87272 event pairs, 0 based on Foata normal form. 463/17770 useless extension candidates. Maximal degree in co-relation 18656. Up to 3960 conditions per place. [2021-06-11 09:36:21,273 INFO L132 encePairwiseOnDemand]: 262/269 looper letters, 8 selfloop transitions, 1 changer transitions 0/187 dead transitions. [2021-06-11 09:36:21,273 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 187 transitions, 571 flow [2021-06-11 09:36:21,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:36:21,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:36:21,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 777 transitions. [2021-06-11 09:36:21,275 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9628252788104089 [2021-06-11 09:36:21,275 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 777 transitions. [2021-06-11 09:36:21,275 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 777 transitions. [2021-06-11 09:36:21,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:36:21,276 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 777 transitions. [2021-06-11 09:36:21,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 259.0) internal successors, (777), 3 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:36:21,278 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:36:21,278 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:36:21,278 INFO L185 Difference]: Start difference. First operand has 65 places, 193 transitions, 571 flow. Second operand 3 states and 777 transitions. [2021-06-11 09:36:21,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 187 transitions, 571 flow [2021-06-11 09:36:21,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 187 transitions, 570 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-11 09:36:21,281 INFO L241 Difference]: Finished difference. Result has 66 places, 187 transitions, 554 flow [2021-06-11 09:36:21,281 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=552, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=554, PETRI_PLACES=66, PETRI_TRANSITIONS=187} [2021-06-11 09:36:21,281 INFO L343 CegarLoopForPetriNet]: 86 programPoint places, -20 predicate places. [2021-06-11 09:36:21,281 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:36:21,281 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 66 places, 187 transitions, 554 flow [2021-06-11 09:36:21,282 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 66 places, 187 transitions, 554 flow [2021-06-11 09:36:21,282 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 66 places, 187 transitions, 554 flow [2021-06-11 09:36:21,710 INFO L129 PetriNetUnfolder]: 13596/17307 cut-off events. [2021-06-11 09:36:21,711 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:36:21,744 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17330 conditions, 17307 events. 13596/17307 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 837. Compared 76981 event pairs, 0 based on Foata normal form. 0/17307 useless extension candidates. Maximal degree in co-relation 17321. Up to 3960 conditions per place. [2021-06-11 09:36:21,859 INFO L151 LiptonReduction]: Number of co-enabled transitions 4108 [2021-06-11 09:36:21,867 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:36:21,867 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:36:21,867 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 586 [2021-06-11 09:36:21,868 INFO L480 AbstractCegarLoop]: Abstraction has has 66 places, 187 transitions, 554 flow [2021-06-11 09:36:21,868 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:36:21,868 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:36:21,868 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 09:36:21,868 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-11 09:36:21,868 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-06-11 09:36:21,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:36:21,869 INFO L82 PathProgramCache]: Analyzing trace with hash -1838825821, now seen corresponding path program 1 times [2021-06-11 09:36:21,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:36:21,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424816267] [2021-06-11 09:36:21,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:36:21,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:36:21,886 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:36:21,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:36:21,886 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:36:21,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:36:21,888 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:36:21,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:36:21,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:36:21,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424816267] [2021-06-11 09:36:21,889 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:36:21,889 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 09:36:21,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323102924] [2021-06-11 09:36:21,889 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:36:21,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:36:21,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:36:21,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:36:21,890 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 269 [2021-06-11 09:36:21,891 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 187 transitions, 554 flow. Second operand has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:36:21,891 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:36:21,891 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 269 [2021-06-11 09:36:21,891 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:36:22,067 INFO L129 PetriNetUnfolder]: 4157/5613 cut-off events. [2021-06-11 09:36:22,068 INFO L130 PetriNetUnfolder]: For 1336/1336 co-relation queries the response was YES. [2021-06-11 09:36:22,078 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5730 conditions, 5613 events. 4157/5613 cut-off events. For 1336/1336 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 26968 event pairs, 0 based on Foata normal form. 1244/6857 useless extension candidates. Maximal degree in co-relation 5720. Up to 1320 conditions per place. [2021-06-11 09:36:22,091 INFO L132 encePairwiseOnDemand]: 257/269 looper letters, 3 selfloop transitions, 1 changer transitions 0/176 dead transitions. [2021-06-11 09:36:22,091 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 176 transitions, 529 flow [2021-06-11 09:36:22,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:36:22,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:36:22,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 777 transitions. [2021-06-11 09:36:22,109 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9628252788104089 [2021-06-11 09:36:22,109 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 777 transitions. [2021-06-11 09:36:22,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 777 transitions. [2021-06-11 09:36:22,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:36:22,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 777 transitions. [2021-06-11 09:36:22,110 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 259.0) internal successors, (777), 3 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:36:22,111 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:36:22,111 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:36:22,111 INFO L185 Difference]: Start difference. First operand has 66 places, 187 transitions, 554 flow. Second operand 3 states and 777 transitions. [2021-06-11 09:36:22,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 176 transitions, 529 flow [2021-06-11 09:36:22,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 176 transitions, 528 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-11 09:36:22,114 INFO L241 Difference]: Finished difference. Result has 67 places, 176 transitions, 522 flow [2021-06-11 09:36:22,114 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=522, PETRI_PLACES=67, PETRI_TRANSITIONS=176} [2021-06-11 09:36:22,114 INFO L343 CegarLoopForPetriNet]: 86 programPoint places, -19 predicate places. [2021-06-11 09:36:22,114 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:36:22,114 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 67 places, 176 transitions, 522 flow [2021-06-11 09:36:22,114 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 67 places, 176 transitions, 522 flow [2021-06-11 09:36:22,115 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 67 places, 176 transitions, 522 flow [2021-06-11 09:36:22,254 INFO L129 PetriNetUnfolder]: 4157/5613 cut-off events. [2021-06-11 09:36:22,254 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:36:22,262 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5637 conditions, 5613 events. 4157/5613 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 24210 event pairs, 0 based on Foata normal form. 0/5613 useless extension candidates. Maximal degree in co-relation 5628. Up to 1320 conditions per place. [2021-06-11 09:36:22,292 INFO L151 LiptonReduction]: Number of co-enabled transitions 3822 [2021-06-11 09:36:22,299 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:36:22,299 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:36:22,299 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 185 [2021-06-11 09:36:22,300 INFO L480 AbstractCegarLoop]: Abstraction has has 67 places, 176 transitions, 522 flow [2021-06-11 09:36:22,300 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:36:22,300 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:36:22,300 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 09:36:22,300 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-11 09:36:22,300 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-06-11 09:36:22,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:36:22,301 INFO L82 PathProgramCache]: Analyzing trace with hash 1476202047, now seen corresponding path program 1 times [2021-06-11 09:36:22,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:36:22,301 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847727780] [2021-06-11 09:36:22,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:36:22,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:36:22,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:36:22,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:36:22,317 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:36:22,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:36:22,319 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:36:22,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:36:22,320 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 09:36:22,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847727780] [2021-06-11 09:36:22,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:36:22,320 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 09:36:22,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688122397] [2021-06-11 09:36:22,320 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:36:22,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:36:22,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:36:22,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:36:22,321 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 269 [2021-06-11 09:36:22,321 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 176 transitions, 522 flow. Second operand has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:36:22,322 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:36:22,322 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 269 [2021-06-11 09:36:22,322 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:36:22,375 INFO L129 PetriNetUnfolder]: 1042/1539 cut-off events. [2021-06-11 09:36:22,375 INFO L130 PetriNetUnfolder]: For 468/468 co-relation queries the response was YES. [2021-06-11 09:36:22,377 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1566 conditions, 1539 events. 1042/1539 cut-off events. For 468/468 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 7109 event pairs, 0 based on Foata normal form. 467/2006 useless extension candidates. Maximal degree in co-relation 1556. Up to 360 conditions per place. [2021-06-11 09:36:22,380 INFO L132 encePairwiseOnDemand]: 255/269 looper letters, 1 selfloop transitions, 1 changer transitions 0/150 dead transitions. [2021-06-11 09:36:22,380 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 150 transitions, 448 flow [2021-06-11 09:36:22,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:36:22,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:36:22,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 777 transitions. [2021-06-11 09:36:22,382 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9628252788104089 [2021-06-11 09:36:22,382 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 777 transitions. [2021-06-11 09:36:22,382 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 777 transitions. [2021-06-11 09:36:22,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:36:22,382 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 777 transitions. [2021-06-11 09:36:22,383 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 259.0) internal successors, (777), 3 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:36:22,384 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:36:22,384 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:36:22,384 INFO L185 Difference]: Start difference. First operand has 67 places, 176 transitions, 522 flow. Second operand 3 states and 777 transitions. [2021-06-11 09:36:22,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 150 transitions, 448 flow [2021-06-11 09:36:22,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 150 transitions, 447 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-11 09:36:22,386 INFO L241 Difference]: Finished difference. Result has 68 places, 150 transitions, 445 flow [2021-06-11 09:36:22,386 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=443, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=445, PETRI_PLACES=68, PETRI_TRANSITIONS=150} [2021-06-11 09:36:22,386 INFO L343 CegarLoopForPetriNet]: 86 programPoint places, -18 predicate places. [2021-06-11 09:36:22,387 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:36:22,387 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 68 places, 150 transitions, 445 flow [2021-06-11 09:36:22,387 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 68 places, 150 transitions, 445 flow [2021-06-11 09:36:22,387 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 68 places, 150 transitions, 445 flow [2021-06-11 09:36:22,423 INFO L129 PetriNetUnfolder]: 1042/1539 cut-off events. [2021-06-11 09:36:22,423 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:36:22,425 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1564 conditions, 1539 events. 1042/1539 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 6196 event pairs, 0 based on Foata normal form. 0/1539 useless extension candidates. Maximal degree in co-relation 1555. Up to 360 conditions per place. [2021-06-11 09:36:22,432 INFO L151 LiptonReduction]: Number of co-enabled transitions 2688 [2021-06-11 09:36:22,437 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:36:22,438 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:36:22,438 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 51 [2021-06-11 09:36:22,438 INFO L480 AbstractCegarLoop]: Abstraction has has 68 places, 150 transitions, 445 flow [2021-06-11 09:36:22,438 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:36:22,438 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:36:22,439 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 09:36:22,439 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-11 09:36:22,439 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-06-11 09:36:22,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:36:22,439 INFO L82 PathProgramCache]: Analyzing trace with hash 794448179, now seen corresponding path program 1 times [2021-06-11 09:36:22,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:36:22,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563116920] [2021-06-11 09:36:22,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:36:22,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:36:22,449 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:36:22,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:36:22,450 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:36:22,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:36:22,452 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:36:22,452 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:36:22,452 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 09:36:22,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563116920] [2021-06-11 09:36:22,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:36:22,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 09:36:22,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019852931] [2021-06-11 09:36:22,453 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:36:22,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:36:22,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:36:22,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:36:22,454 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 269 [2021-06-11 09:36:22,454 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 150 transitions, 445 flow. Second operand has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:36:22,454 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:36:22,454 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 269 [2021-06-11 09:36:22,454 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:36:22,477 INFO L129 PetriNetUnfolder]: 249/455 cut-off events. [2021-06-11 09:36:22,477 INFO L130 PetriNetUnfolder]: For 143/143 co-relation queries the response was YES. [2021-06-11 09:36:22,477 INFO L84 FinitePrefix]: Finished finitePrefix Result has 495 conditions, 455 events. 249/455 cut-off events. For 143/143 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1698 event pairs, 0 based on Foata normal form. 130/585 useless extension candidates. Maximal degree in co-relation 485. Up to 84 conditions per place. [2021-06-11 09:36:22,478 INFO L132 encePairwiseOnDemand]: 259/269 looper letters, 4 selfloop transitions, 1 changer transitions 0/141 dead transitions. [2021-06-11 09:36:22,478 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 141 transitions, 428 flow [2021-06-11 09:36:22,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:36:22,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:36:22,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 776 transitions. [2021-06-11 09:36:22,480 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9615861214374225 [2021-06-11 09:36:22,480 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 776 transitions. [2021-06-11 09:36:22,480 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 776 transitions. [2021-06-11 09:36:22,480 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:36:22,480 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 776 transitions. [2021-06-11 09:36:22,481 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 258.6666666666667) internal successors, (776), 3 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:36:22,482 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:36:22,482 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:36:22,482 INFO L185 Difference]: Start difference. First operand has 68 places, 150 transitions, 445 flow. Second operand 3 states and 776 transitions. [2021-06-11 09:36:22,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 141 transitions, 428 flow [2021-06-11 09:36:22,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 141 transitions, 427 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-11 09:36:22,484 INFO L241 Difference]: Finished difference. Result has 69 places, 141 transitions, 419 flow [2021-06-11 09:36:22,484 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=419, PETRI_PLACES=69, PETRI_TRANSITIONS=141} [2021-06-11 09:36:22,484 INFO L343 CegarLoopForPetriNet]: 86 programPoint places, -17 predicate places. [2021-06-11 09:36:22,484 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:36:22,485 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 141 transitions, 419 flow [2021-06-11 09:36:22,485 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 141 transitions, 419 flow [2021-06-11 09:36:22,485 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 69 places, 141 transitions, 419 flow [2021-06-11 09:36:22,497 INFO L129 PetriNetUnfolder]: 249/455 cut-off events. [2021-06-11 09:36:22,497 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:36:22,497 INFO L84 FinitePrefix]: Finished finitePrefix Result has 481 conditions, 455 events. 249/455 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1598 event pairs, 0 based on Foata normal form. 0/455 useless extension candidates. Maximal degree in co-relation 472. Up to 84 conditions per place. [2021-06-11 09:36:22,499 INFO L151 LiptonReduction]: Number of co-enabled transitions 2130 [2021-06-11 09:36:22,504 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:36:22,504 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:36:22,504 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 20 [2021-06-11 09:36:22,504 INFO L480 AbstractCegarLoop]: Abstraction has has 69 places, 141 transitions, 419 flow [2021-06-11 09:36:22,505 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:36:22,505 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:36:22,505 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 09:36:22,505 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-11 09:36:22,505 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-06-11 09:36:22,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:36:22,505 INFO L82 PathProgramCache]: Analyzing trace with hash -1456333061, now seen corresponding path program 1 times [2021-06-11 09:36:22,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:36:22,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352854551] [2021-06-11 09:36:22,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:36:22,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:36:22,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:36:22,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:36:22,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:36:22,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:36:22,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:36:22,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:36:22,518 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 09:36:22,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352854551] [2021-06-11 09:36:22,518 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:36:22,518 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 09:36:22,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820020332] [2021-06-11 09:36:22,518 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:36:22,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:36:22,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:36:22,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:36:22,519 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 269 [2021-06-11 09:36:22,519 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 141 transitions, 419 flow. Second operand has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:36:22,519 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:36:22,519 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 269 [2021-06-11 09:36:22,519 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:36:22,532 INFO L129 PetriNetUnfolder]: 30/102 cut-off events. [2021-06-11 09:36:22,532 INFO L130 PetriNetUnfolder]: For 42/42 co-relation queries the response was YES. [2021-06-11 09:36:22,532 INFO L84 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 102 events. 30/102 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 200 event pairs, 0 based on Foata normal form. 41/143 useless extension candidates. Maximal degree in co-relation 121. Up to 14 conditions per place. [2021-06-11 09:36:22,533 INFO L132 encePairwiseOnDemand]: 256/269 looper letters, 1 selfloop transitions, 1 changer transitions 0/79 dead transitions. [2021-06-11 09:36:22,533 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 79 transitions, 237 flow [2021-06-11 09:36:22,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:36:22,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:36:22,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 776 transitions. [2021-06-11 09:36:22,534 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9615861214374225 [2021-06-11 09:36:22,534 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 776 transitions. [2021-06-11 09:36:22,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 776 transitions. [2021-06-11 09:36:22,534 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:36:22,534 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 776 transitions. [2021-06-11 09:36:22,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 258.6666666666667) internal successors, (776), 3 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:36:22,536 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:36:22,536 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:36:22,536 INFO L185 Difference]: Start difference. First operand has 69 places, 141 transitions, 419 flow. Second operand 3 states and 776 transitions. [2021-06-11 09:36:22,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 79 transitions, 237 flow [2021-06-11 09:36:22,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 79 transitions, 236 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-11 09:36:22,538 INFO L241 Difference]: Finished difference. Result has 70 places, 79 transitions, 234 flow [2021-06-11 09:36:22,538 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=234, PETRI_PLACES=70, PETRI_TRANSITIONS=79} [2021-06-11 09:36:22,538 INFO L343 CegarLoopForPetriNet]: 86 programPoint places, -16 predicate places. [2021-06-11 09:36:22,538 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:36:22,538 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 70 places, 79 transitions, 234 flow [2021-06-11 09:36:22,538 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 70 places, 79 transitions, 234 flow [2021-06-11 09:36:22,538 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 70 places, 79 transitions, 234 flow [2021-06-11 09:36:22,542 INFO L129 PetriNetUnfolder]: 30/102 cut-off events. [2021-06-11 09:36:22,542 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:36:22,542 INFO L84 FinitePrefix]: Finished finitePrefix Result has 129 conditions, 102 events. 30/102 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 219 event pairs, 0 based on Foata normal form. 0/102 useless extension candidates. Maximal degree in co-relation 120. Up to 14 conditions per place. [2021-06-11 09:36:22,543 INFO L151 LiptonReduction]: Number of co-enabled transitions 1206 [2021-06-11 09:36:22,544 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:36:22,544 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:36:22,544 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 6 [2021-06-11 09:36:22,545 INFO L480 AbstractCegarLoop]: Abstraction has has 70 places, 79 transitions, 234 flow [2021-06-11 09:36:22,545 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:36:22,545 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:36:22,545 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 09:36:22,545 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-06-11 09:36:22,545 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-06-11 09:36:22,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:36:22,546 INFO L82 PathProgramCache]: Analyzing trace with hash 2123789327, now seen corresponding path program 1 times [2021-06-11 09:36:22,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:36:22,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474466408] [2021-06-11 09:36:22,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:36:22,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:36:22,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:36:22,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:36:22,576 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:36:22,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:36:22,578 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:36:22,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:36:22,579 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 09:36:22,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474466408] [2021-06-11 09:36:22,579 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:36:22,579 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 09:36:22,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660829073] [2021-06-11 09:36:22,580 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:36:22,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:36:22,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:36:22,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:36:22,581 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 269 [2021-06-11 09:36:22,581 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 79 transitions, 234 flow. Second operand has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:36:22,581 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:36:22,581 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 269 [2021-06-11 09:36:22,581 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:36:22,589 INFO L129 PetriNetUnfolder]: 1/45 cut-off events. [2021-06-11 09:36:22,589 INFO L130 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2021-06-11 09:36:22,589 INFO L84 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 45 events. 1/45 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 24 event pairs, 0 based on Foata normal form. 8/53 useless extension candidates. Maximal degree in co-relation 65. Up to 2 conditions per place. [2021-06-11 09:36:22,589 INFO L132 encePairwiseOnDemand]: 261/269 looper letters, 1 selfloop transitions, 1 changer transitions 0/45 dead transitions. [2021-06-11 09:36:22,589 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 45 transitions, 136 flow [2021-06-11 09:36:22,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:36:22,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:36:22,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 771 transitions. [2021-06-11 09:36:22,590 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9553903345724907 [2021-06-11 09:36:22,591 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 771 transitions. [2021-06-11 09:36:22,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 771 transitions. [2021-06-11 09:36:22,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:36:22,591 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 771 transitions. [2021-06-11 09:36:22,592 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 257.0) internal successors, (771), 3 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:36:22,593 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:36:22,593 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:36:22,593 INFO L185 Difference]: Start difference. First operand has 70 places, 79 transitions, 234 flow. Second operand 3 states and 771 transitions. [2021-06-11 09:36:22,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 45 transitions, 136 flow [2021-06-11 09:36:22,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 45 transitions, 135 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-11 09:36:22,594 INFO L241 Difference]: Finished difference. Result has 71 places, 45 transitions, 133 flow [2021-06-11 09:36:22,594 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=133, PETRI_PLACES=71, PETRI_TRANSITIONS=45} [2021-06-11 09:36:22,594 INFO L343 CegarLoopForPetriNet]: 86 programPoint places, -15 predicate places. [2021-06-11 09:36:22,594 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:36:22,594 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 71 places, 45 transitions, 133 flow [2021-06-11 09:36:22,594 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 71 places, 45 transitions, 133 flow [2021-06-11 09:36:22,595 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 71 places, 45 transitions, 133 flow [2021-06-11 09:36:22,597 INFO L129 PetriNetUnfolder]: 1/45 cut-off events. [2021-06-11 09:36:22,597 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:36:22,597 INFO L84 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 45 events. 1/45 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 30 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2021-06-11 09:36:22,597 INFO L151 LiptonReduction]: Number of co-enabled transitions 596 [2021-06-11 09:36:22,598 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:36:22,598 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:36:22,598 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 4 [2021-06-11 09:36:22,599 INFO L480 AbstractCegarLoop]: Abstraction has has 71 places, 45 transitions, 133 flow [2021-06-11 09:36:22,599 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:36:22,599 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:36:22,599 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 09:36:22,599 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-06-11 09:36:22,599 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-06-11 09:36:22,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:36:22,599 INFO L82 PathProgramCache]: Analyzing trace with hash -228577559, now seen corresponding path program 1 times [2021-06-11 09:36:22,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:36:22,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040985680] [2021-06-11 09:36:22,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:36:22,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:36:22,698 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:36:22,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:36:22,703 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:36:22,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:36:22,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:36:22,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 09:36:22,729 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-11 09:36:22,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-11 09:36:22,757 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-11 09:36:22,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-11 09:36:22,785 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-06-11 09:36:22,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-11 09:36:22,819 INFO L142 QuantifierPusher]: treesize reduction 27, result has 64.5 percent of original size [2021-06-11 09:36:22,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 09:36:22,884 INFO L142 QuantifierPusher]: treesize reduction 36, result has 61.3 percent of original size [2021-06-11 09:36:22,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-06-11 09:36:22,960 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-06-11 09:36:22,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-06-11 09:36:23,003 INFO L142 QuantifierPusher]: treesize reduction 63, result has 52.3 percent of original size [2021-06-11 09:36:23,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-06-11 09:36:23,050 INFO L142 QuantifierPusher]: treesize reduction 72, result has 51.7 percent of original size [2021-06-11 09:36:23,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-06-11 09:36:23,110 INFO L142 QuantifierPusher]: treesize reduction 81, result has 51.2 percent of original size [2021-06-11 09:36:23,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-06-11 09:36:23,167 INFO L142 QuantifierPusher]: treesize reduction 90, result has 50.8 percent of original size [2021-06-11 09:36:23,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 93 [2021-06-11 09:36:23,235 INFO L142 QuantifierPusher]: treesize reduction 108, result has 48.8 percent of original size [2021-06-11 09:36:23,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-06-11 09:36:23,308 INFO L142 QuantifierPusher]: treesize reduction 117, result has 47.3 percent of original size [2021-06-11 09:36:23,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-06-11 09:36:23,376 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 09:36:23,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040985680] [2021-06-11 09:36:23,376 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:36:23,376 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-11 09:36:23,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992618476] [2021-06-11 09:36:23,376 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-11 09:36:23,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:36:23,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-11 09:36:23,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2021-06-11 09:36:23,379 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 269 [2021-06-11 09:36:23,381 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 45 transitions, 133 flow. Second operand has 16 states, 16 states have (on average 239.9375) internal successors, (3839), 16 states have internal predecessors, (3839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:36:23,381 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:36:23,381 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 269 [2021-06-11 09:36:23,381 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:36:33,276 INFO L129 PetriNetUnfolder]: 135695/164069 cut-off events. [2021-06-11 09:36:33,277 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:36:34,427 INFO L84 FinitePrefix]: Finished finitePrefix Result has 323856 conditions, 164069 events. 135695/164069 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8255. Compared 848567 event pairs, 45057 based on Foata normal form. 1/162339 useless extension candidates. Maximal degree in co-relation 323846. Up to 57345 conditions per place. [2021-06-11 09:36:34,921 INFO L132 encePairwiseOnDemand]: 254/269 looper letters, 104 selfloop transitions, 14 changer transitions 0/148 dead transitions. [2021-06-11 09:36:34,921 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 148 transitions, 575 flow [2021-06-11 09:36:34,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-11 09:36:34,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-06-11 09:36:34,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3943 transitions. [2021-06-11 09:36:34,927 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9161245353159851 [2021-06-11 09:36:34,927 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3943 transitions. [2021-06-11 09:36:34,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3943 transitions. [2021-06-11 09:36:34,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:36:34,928 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3943 transitions. [2021-06-11 09:36:34,932 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 246.4375) internal successors, (3943), 16 states have internal predecessors, (3943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:36:34,936 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 269.0) internal successors, (4573), 17 states have internal predecessors, (4573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:36:34,936 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 269.0) internal successors, (4573), 17 states have internal predecessors, (4573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:36:34,936 INFO L185 Difference]: Start difference. First operand has 71 places, 45 transitions, 133 flow. Second operand 16 states and 3943 transitions. [2021-06-11 09:36:34,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 148 transitions, 575 flow [2021-06-11 09:36:34,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 148 transitions, 574 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-11 09:36:34,941 INFO L241 Difference]: Finished difference. Result has 99 places, 58 transitions, 241 flow [2021-06-11 09:36:34,941 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=241, PETRI_PLACES=99, PETRI_TRANSITIONS=58} [2021-06-11 09:36:34,941 INFO L343 CegarLoopForPetriNet]: 86 programPoint places, 13 predicate places. [2021-06-11 09:36:34,941 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:36:34,941 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 99 places, 58 transitions, 241 flow [2021-06-11 09:36:34,941 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 99 places, 58 transitions, 241 flow [2021-06-11 09:36:34,942 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 99 places, 58 transitions, 241 flow [2021-06-11 09:36:34,952 INFO L129 PetriNetUnfolder]: 4/204 cut-off events. [2021-06-11 09:36:34,952 INFO L130 PetriNetUnfolder]: For 27/27 co-relation queries the response was YES. [2021-06-11 09:36:34,953 INFO L84 FinitePrefix]: Finished finitePrefix Result has 324 conditions, 204 events. 4/204 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1073 event pairs, 0 based on Foata normal form. 0/181 useless extension candidates. Maximal degree in co-relation 301. Up to 14 conditions per place. [2021-06-11 09:36:34,953 INFO L151 LiptonReduction]: Number of co-enabled transitions 954 [2021-06-11 09:36:34,955 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:36:34,955 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:36:34,955 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 14 [2021-06-11 09:36:34,956 INFO L480 AbstractCegarLoop]: Abstraction has has 99 places, 58 transitions, 241 flow [2021-06-11 09:36:34,957 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 239.9375) internal successors, (3839), 16 states have internal predecessors, (3839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:36:34,957 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:36:34,957 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 09:36:34,957 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-06-11 09:36:34,957 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-06-11 09:36:34,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:36:34,957 INFO L82 PathProgramCache]: Analyzing trace with hash -1044902637, now seen corresponding path program 2 times [2021-06-11 09:36:34,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:36:34,957 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831678219] [2021-06-11 09:36:34,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:36:34,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:36:35,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:36:35,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:36:35,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:36:35,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:36:35,008 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:36:35,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 09:36:35,014 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 09:36:35,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 09:36:35,024 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-11 09:36:35,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-11 09:36:35,036 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-11 09:36:35,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-11 09:36:35,053 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 09:36:35,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 09:36:35,076 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-06-11 09:36:35,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-06-11 09:36:35,105 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-06-11 09:36:35,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-06-11 09:36:35,145 INFO L142 QuantifierPusher]: treesize reduction 63, result has 52.3 percent of original size [2021-06-11 09:36:35,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-06-11 09:36:35,203 INFO L142 QuantifierPusher]: treesize reduction 72, result has 51.7 percent of original size [2021-06-11 09:36:35,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-06-11 09:36:35,250 INFO L142 QuantifierPusher]: treesize reduction 81, result has 51.2 percent of original size [2021-06-11 09:36:35,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-06-11 09:36:35,304 INFO L142 QuantifierPusher]: treesize reduction 90, result has 50.8 percent of original size [2021-06-11 09:36:35,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 93 [2021-06-11 09:36:35,364 INFO L142 QuantifierPusher]: treesize reduction 99, result has 50.5 percent of original size [2021-06-11 09:36:35,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-06-11 09:36:35,431 INFO L142 QuantifierPusher]: treesize reduction 117, result has 47.3 percent of original size [2021-06-11 09:36:35,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-06-11 09:36:35,494 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 09:36:35,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831678219] [2021-06-11 09:36:35,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:36:35,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-11 09:36:35,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194598695] [2021-06-11 09:36:35,494 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-11 09:36:35,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:36:35,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-11 09:36:35,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2021-06-11 09:36:35,496 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 269 [2021-06-11 09:36:35,498 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 58 transitions, 241 flow. Second operand has 16 states, 16 states have (on average 239.9375) internal successors, (3839), 16 states have internal predecessors, (3839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:36:35,498 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:36:35,498 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 269 [2021-06-11 09:36:35,498 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:36:56,388 WARN L205 SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2021-06-11 09:36:57,292 INFO L129 PetriNetUnfolder]: 190870/258422 cut-off events. [2021-06-11 09:36:57,292 INFO L130 PetriNetUnfolder]: For 264262/291710 co-relation queries the response was YES. [2021-06-11 09:36:59,853 INFO L84 FinitePrefix]: Finished finitePrefix Result has 713273 conditions, 258422 events. 190870/258422 cut-off events. For 264262/291710 co-relation queries the response was YES. Maximal size of possible extension queue 11446. Compared 1874062 event pairs, 61443 based on Foata normal form. 1/256723 useless extension candidates. Maximal degree in co-relation 713249. Up to 80013 conditions per place. [2021-06-11 09:37:00,807 INFO L132 encePairwiseOnDemand]: 254/269 looper letters, 146 selfloop transitions, 20 changer transitions 0/196 dead transitions. [2021-06-11 09:37:00,808 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 196 transitions, 1208 flow [2021-06-11 09:37:00,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-11 09:37:00,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-06-11 09:37:00,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3943 transitions. [2021-06-11 09:37:00,812 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9161245353159851 [2021-06-11 09:37:00,812 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3943 transitions. [2021-06-11 09:37:00,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3943 transitions. [2021-06-11 09:37:00,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:37:00,813 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3943 transitions. [2021-06-11 09:37:00,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 246.4375) internal successors, (3943), 16 states have internal predecessors, (3943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:37:00,820 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 269.0) internal successors, (4573), 17 states have internal predecessors, (4573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:37:00,820 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 269.0) internal successors, (4573), 17 states have internal predecessors, (4573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:37:00,821 INFO L185 Difference]: Start difference. First operand has 99 places, 58 transitions, 241 flow. Second operand 16 states and 3943 transitions. [2021-06-11 09:37:00,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 196 transitions, 1208 flow [2021-06-11 09:37:00,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 196 transitions, 1194 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-11 09:37:00,964 INFO L241 Difference]: Finished difference. Result has 127 places, 76 transitions, 438 flow [2021-06-11 09:37:00,964 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=438, PETRI_PLACES=127, PETRI_TRANSITIONS=76} [2021-06-11 09:37:00,964 INFO L343 CegarLoopForPetriNet]: 86 programPoint places, 41 predicate places. [2021-06-11 09:37:00,964 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:37:00,964 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 127 places, 76 transitions, 438 flow [2021-06-11 09:37:00,964 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 127 places, 76 transitions, 438 flow [2021-06-11 09:37:00,965 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 127 places, 76 transitions, 438 flow [2021-06-11 09:37:01,015 INFO L129 PetriNetUnfolder]: 11/726 cut-off events. [2021-06-11 09:37:01,015 INFO L130 PetriNetUnfolder]: For 301/318 co-relation queries the response was YES. [2021-06-11 09:37:01,018 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1175 conditions, 726 events. 11/726 cut-off events. For 301/318 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 7001 event pairs, 0 based on Foata normal form. 0/641 useless extension candidates. Maximal degree in co-relation 1138. Up to 59 conditions per place. [2021-06-11 09:37:01,022 INFO L151 LiptonReduction]: Number of co-enabled transitions 1402 [2021-06-11 09:37:01,024 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:37:01,024 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:37:01,024 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 60 [2021-06-11 09:37:01,024 INFO L480 AbstractCegarLoop]: Abstraction has has 127 places, 76 transitions, 438 flow [2021-06-11 09:37:01,025 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 239.9375) internal successors, (3839), 16 states have internal predecessors, (3839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:37:01,025 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:37:01,025 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 09:37:01,025 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-06-11 09:37:01,025 INFO L428 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-06-11 09:37:01,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:37:01,025 INFO L82 PathProgramCache]: Analyzing trace with hash -1588330511, now seen corresponding path program 3 times [2021-06-11 09:37:01,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:37:01,026 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687797092] [2021-06-11 09:37:01,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:37:01,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:37:01,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:37:01,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:37:01,068 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:37:01,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:37:01,071 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:37:01,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 09:37:01,077 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 09:37:01,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 09:37:01,107 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-11 09:37:01,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-11 09:37:01,122 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-11 09:37:01,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-11 09:37:01,138 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 09:37:01,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 09:37:01,163 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-06-11 09:37:01,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-06-11 09:37:01,191 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-06-11 09:37:01,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-06-11 09:37:01,234 INFO L142 QuantifierPusher]: treesize reduction 63, result has 52.3 percent of original size [2021-06-11 09:37:01,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-06-11 09:37:01,375 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2021-06-11 09:37:01,377 INFO L142 QuantifierPusher]: treesize reduction 72, result has 51.7 percent of original size [2021-06-11 09:37:01,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-06-11 09:37:01,421 INFO L142 QuantifierPusher]: treesize reduction 81, result has 51.2 percent of original size [2021-06-11 09:37:01,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-06-11 09:37:01,478 INFO L142 QuantifierPusher]: treesize reduction 99, result has 49.0 percent of original size [2021-06-11 09:37:01,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-06-11 09:37:01,535 INFO L142 QuantifierPusher]: treesize reduction 108, result has 48.8 percent of original size [2021-06-11 09:37:01,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-06-11 09:37:01,610 INFO L142 QuantifierPusher]: treesize reduction 117, result has 47.3 percent of original size [2021-06-11 09:37:01,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-06-11 09:37:01,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:37:01,667 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687797092] [2021-06-11 09:37:01,667 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:37:01,667 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-11 09:37:01,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524509284] [2021-06-11 09:37:01,668 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-11 09:37:01,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:37:01,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-11 09:37:01,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2021-06-11 09:37:01,670 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 269 [2021-06-11 09:37:01,671 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 76 transitions, 438 flow. Second operand has 16 states, 16 states have (on average 239.9375) internal successors, (3839), 16 states have internal predecessors, (3839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:37:01,671 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:37:01,671 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 269 [2021-06-11 09:37:01,671 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:37:56,813 INFO L129 PetriNetUnfolder]: 266300/374559 cut-off events. [2021-06-11 09:37:56,813 INFO L130 PetriNetUnfolder]: For 1047166/1082019 co-relation queries the response was YES. [2021-06-11 09:38:01,448 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1339241 conditions, 374559 events. 266300/374559 cut-off events. For 1047166/1082019 co-relation queries the response was YES. Maximal size of possible extension queue 20749. Compared 3162832 event pairs, 83162 based on Foata normal form. 1/372727 useless extension candidates. Maximal degree in co-relation 1339203. Up to 113929 conditions per place. [2021-06-11 09:38:03,219 INFO L132 encePairwiseOnDemand]: 254/269 looper letters, 175 selfloop transitions, 37 changer transitions 0/242 dead transitions. [2021-06-11 09:38:03,219 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 242 transitions, 1991 flow [2021-06-11 09:38:03,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-11 09:38:03,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-06-11 09:38:03,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3943 transitions. [2021-06-11 09:38:03,225 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9161245353159851 [2021-06-11 09:38:03,225 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3943 transitions. [2021-06-11 09:38:03,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3943 transitions. [2021-06-11 09:38:03,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:38:03,226 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3943 transitions. [2021-06-11 09:38:03,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 246.4375) internal successors, (3943), 16 states have internal predecessors, (3943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:38:03,234 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 269.0) internal successors, (4573), 17 states have internal predecessors, (4573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:38:03,234 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 269.0) internal successors, (4573), 17 states have internal predecessors, (4573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:38:03,234 INFO L185 Difference]: Start difference. First operand has 127 places, 76 transitions, 438 flow. Second operand 16 states and 3943 transitions. [2021-06-11 09:38:03,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 242 transitions, 1991 flow [2021-06-11 09:39:03,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 242 transitions, 1938 flow, removed 19 selfloop flow, removed 1 redundant places. [2021-06-11 09:39:03,370 INFO L241 Difference]: Finished difference. Result has 155 places, 110 transitions, 881 flow [2021-06-11 09:39:03,370 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=422, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=881, PETRI_PLACES=155, PETRI_TRANSITIONS=110} [2021-06-11 09:39:03,370 INFO L343 CegarLoopForPetriNet]: 86 programPoint places, 69 predicate places. [2021-06-11 09:39:03,370 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:39:03,370 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 155 places, 110 transitions, 881 flow [2021-06-11 09:39:03,370 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 155 places, 110 transitions, 881 flow [2021-06-11 09:39:03,371 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 155 places, 110 transitions, 881 flow [2021-06-11 09:39:03,554 INFO L129 PetriNetUnfolder]: 25/1741 cut-off events. [2021-06-11 09:39:03,555 INFO L130 PetriNetUnfolder]: For 1450/1567 co-relation queries the response was YES. [2021-06-11 09:39:03,564 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3049 conditions, 1741 events. 25/1741 cut-off events. For 1450/1567 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 21473 event pairs, 0 based on Foata normal form. 3/1543 useless extension candidates. Maximal degree in co-relation 2998. Up to 144 conditions per place. [2021-06-11 09:39:03,581 INFO L151 LiptonReduction]: Number of co-enabled transitions 2268 [2021-06-11 09:39:03,584 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:39:03,584 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:39:03,584 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 214 [2021-06-11 09:39:03,585 INFO L480 AbstractCegarLoop]: Abstraction has has 155 places, 110 transitions, 881 flow [2021-06-11 09:39:03,586 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 239.9375) internal successors, (3839), 16 states have internal predecessors, (3839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:39:03,586 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:39:03,586 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 09:39:03,586 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-06-11 09:39:03,586 INFO L428 AbstractCegarLoop]: === Iteration 16 === [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 09:39:03,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:39:03,586 INFO L82 PathProgramCache]: Analyzing trace with hash -128154365, now seen corresponding path program 4 times [2021-06-11 09:39:03,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:39:03,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738587487] [2021-06-11 09:39:03,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:39:03,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:39:03,626 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:39:03,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:39:03,627 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:39:03,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:39:03,631 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:39:03,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 09:39:03,637 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:39:03,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 09:39:03,646 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-11 09:39:03,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-11 09:39:03,658 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-11 09:39:03,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-11 09:39:03,675 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-06-11 09:39:03,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-06-11 09:39:03,694 INFO L142 QuantifierPusher]: treesize reduction 36, result has 58.6 percent of original size [2021-06-11 09:39:03,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-06-11 09:39:03,724 INFO L142 QuantifierPusher]: treesize reduction 45, result has 56.7 percent of original size [2021-06-11 09:39:03,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-06-11 09:39:03,759 INFO L142 QuantifierPusher]: treesize reduction 54, result has 55.4 percent of original size [2021-06-11 09:39:03,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-06-11 09:39:03,797 INFO L142 QuantifierPusher]: treesize reduction 63, result has 54.3 percent of original size [2021-06-11 09:39:03,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-06-11 09:39:03,842 INFO L142 QuantifierPusher]: treesize reduction 72, result has 53.5 percent of original size [2021-06-11 09:39:03,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 83 [2021-06-11 09:39:03,891 INFO L142 QuantifierPusher]: treesize reduction 90, result has 50.8 percent of original size [2021-06-11 09:39:03,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 93 [2021-06-11 09:39:03,948 INFO L142 QuantifierPusher]: treesize reduction 99, result has 50.5 percent of original size [2021-06-11 09:39:03,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-06-11 09:39:04,011 INFO L142 QuantifierPusher]: treesize reduction 117, result has 47.3 percent of original size [2021-06-11 09:39:04,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-06-11 09:39:04,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:39:04,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738587487] [2021-06-11 09:39:04,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:39:04,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-11 09:39:04,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070577945] [2021-06-11 09:39:04,068 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-11 09:39:04,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:39:04,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-11 09:39:04,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2021-06-11 09:39:04,070 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 269 [2021-06-11 09:39:04,072 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 110 transitions, 881 flow. Second operand has 16 states, 16 states have (on average 239.9375) internal successors, (3839), 16 states have internal predecessors, (3839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:39:04,072 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:39:04,072 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 269 [2021-06-11 09:39:04,072 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:40:33,767 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2021-06-11 09:40:41,566 INFO L129 PetriNetUnfolder]: 363577/517102 cut-off events. [2021-06-11 09:40:41,566 INFO L130 PetriNetUnfolder]: For 2824419/2866211 co-relation queries the response was YES. [2021-06-11 09:40:50,687 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2299274 conditions, 517102 events. 363577/517102 cut-off events. For 2824419/2866211 co-relation queries the response was YES. Maximal size of possible extension queue 29258. Compared 4612787 event pairs, 115767 based on Foata normal form. 1/514986 useless extension candidates. Maximal degree in co-relation 2299222. Up to 163296 conditions per place. [2021-06-11 09:40:53,697 INFO L132 encePairwiseOnDemand]: 254/269 looper letters, 289 selfloop transitions, 42 changer transitions 0/361 dead transitions. [2021-06-11 09:40:53,698 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 361 transitions, 3884 flow [2021-06-11 09:40:53,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-11 09:40:53,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-06-11 09:40:53,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3943 transitions. [2021-06-11 09:40:53,702 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9161245353159851 [2021-06-11 09:40:53,702 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3943 transitions. [2021-06-11 09:40:53,702 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3943 transitions. [2021-06-11 09:40:53,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:40:53,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3943 transitions. [2021-06-11 09:40:53,734 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 246.4375) internal successors, (3943), 16 states have internal predecessors, (3943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:40:53,737 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 269.0) internal successors, (4573), 17 states have internal predecessors, (4573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:40:53,737 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 269.0) internal successors, (4573), 17 states have internal predecessors, (4573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:40:53,737 INFO L185 Difference]: Start difference. First operand has 155 places, 110 transitions, 881 flow. Second operand 16 states and 3943 transitions. [2021-06-11 09:40:53,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 361 transitions, 3884 flow [2021-06-11 09:44:03,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 361 transitions, 3812 flow, removed 28 selfloop flow, removed 1 redundant places. [2021-06-11 09:44:03,548 INFO L241 Difference]: Finished difference. Result has 183 places, 147 transitions, 1453 flow [2021-06-11 09:44:03,548 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=862, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1453, PETRI_PLACES=183, PETRI_TRANSITIONS=147} [2021-06-11 09:44:03,548 INFO L343 CegarLoopForPetriNet]: 86 programPoint places, 97 predicate places. [2021-06-11 09:44:03,548 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:44:03,548 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 183 places, 147 transitions, 1453 flow [2021-06-11 09:44:03,548 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 183 places, 147 transitions, 1453 flow [2021-06-11 09:44:03,549 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 183 places, 147 transitions, 1453 flow [2021-06-11 09:44:04,263 INFO L129 PetriNetUnfolder]: 58/4025 cut-off events. [2021-06-11 09:44:04,264 INFO L130 PetriNetUnfolder]: For 5215/5549 co-relation queries the response was YES. [2021-06-11 09:44:04,291 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7513 conditions, 4025 events. 58/4025 cut-off events. For 5215/5549 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 59944 event pairs, 0 based on Foata normal form. 7/3596 useless extension candidates. Maximal degree in co-relation 7448. Up to 328 conditions per place. [2021-06-11 09:44:04,343 INFO L151 LiptonReduction]: Number of co-enabled transitions 3132 [2021-06-11 09:44:04,352 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:44:04,352 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:44:04,353 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 805 [2021-06-11 09:44:04,353 INFO L480 AbstractCegarLoop]: Abstraction has has 183 places, 147 transitions, 1453 flow [2021-06-11 09:44:04,354 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 239.9375) internal successors, (3839), 16 states have internal predecessors, (3839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:44:04,354 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:44:04,354 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 09:44:04,354 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-06-11 09:44:04,354 INFO L428 AbstractCegarLoop]: === Iteration 17 === [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 09:44:04,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:44:04,354 INFO L82 PathProgramCache]: Analyzing trace with hash -441350995, now seen corresponding path program 5 times [2021-06-11 09:44:04,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:44:04,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100642408] [2021-06-11 09:44:04,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:44:04,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:44:04,477 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:44:04,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:44:04,477 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:44:04,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:44:04,482 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:44:04,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 09:44:04,488 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:44:04,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 09:44:04,497 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-11 09:44:04,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-11 09:44:04,524 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-11 09:44:04,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-11 09:44:04,541 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-06-11 09:44:04,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-06-11 09:44:04,579 INFO L142 QuantifierPusher]: treesize reduction 36, result has 58.6 percent of original size [2021-06-11 09:44:04,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-06-11 09:44:04,609 INFO L142 QuantifierPusher]: treesize reduction 45, result has 56.7 percent of original size [2021-06-11 09:44:04,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-06-11 09:44:04,662 INFO L142 QuantifierPusher]: treesize reduction 54, result has 55.4 percent of original size [2021-06-11 09:44:04,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-06-11 09:44:04,716 INFO L142 QuantifierPusher]: treesize reduction 63, result has 54.3 percent of original size [2021-06-11 09:44:04,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-06-11 09:44:04,788 INFO L142 QuantifierPusher]: treesize reduction 81, result has 51.2 percent of original size [2021-06-11 09:44:04,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-06-11 09:44:04,856 INFO L142 QuantifierPusher]: treesize reduction 81, result has 52.9 percent of original size [2021-06-11 09:44:04,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 91 [2021-06-11 09:44:04,957 INFO L142 QuantifierPusher]: treesize reduction 99, result has 50.5 percent of original size [2021-06-11 09:44:04,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-06-11 09:44:05,049 INFO L142 QuantifierPusher]: treesize reduction 117, result has 47.3 percent of original size [2021-06-11 09:44:05,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-06-11 09:44:05,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:44:05,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100642408] [2021-06-11 09:44:05,144 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:44:05,144 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-11 09:44:05,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20838541] [2021-06-11 09:44:05,144 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-11 09:44:05,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:44:05,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-11 09:44:05,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2021-06-11 09:44:05,146 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 269 [2021-06-11 09:44:05,148 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 147 transitions, 1453 flow. Second operand has 16 states, 16 states have (on average 239.9375) internal successors, (3839), 16 states have internal predecessors, (3839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:44:05,148 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:44:05,148 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 269 [2021-06-11 09:44:05,148 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand