/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbeWithDisjunctivePredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/mcr/example_11.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-26 13:26:23,947 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-26 13:26:23,948 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-26 13:26:23,981 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-26 13:26:23,981 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-26 13:26:23,984 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-26 13:26:23,986 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-26 13:26:23,992 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-26 13:26:23,994 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-26 13:26:23,997 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-26 13:26:23,998 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-26 13:26:23,999 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-26 13:26:24,000 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-26 13:26:24,001 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-26 13:26:24,002 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-26 13:26:24,004 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-26 13:26:24,006 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-26 13:26:24,007 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-26 13:26:24,010 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-26 13:26:24,017 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-26 13:26:24,018 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-26 13:26:24,019 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-26 13:26:24,020 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-26 13:26:24,022 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-26 13:26:24,027 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-26 13:26:24,028 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-26 13:26:24,028 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-26 13:26:24,029 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-26 13:26:24,030 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-26 13:26:24,030 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-26 13:26:24,030 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-26 13:26:24,031 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-26 13:26:24,032 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-26 13:26:24,033 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-26 13:26:24,034 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-26 13:26:24,034 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-26 13:26:24,034 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-26 13:26:24,034 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-26 13:26:24,034 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-26 13:26:24,035 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-26 13:26:24,035 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-26 13:26:24,039 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbeWithDisjunctivePredicates.epf [2021-03-26 13:26:24,069 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-26 13:26:24,069 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-26 13:26:24,072 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-26 13:26:24,073 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-26 13:26:24,073 INFO L138 SettingsManager]: * Use SBE=true [2021-03-26 13:26:24,073 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-26 13:26:24,073 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-26 13:26:24,073 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-26 13:26:24,073 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-26 13:26:24,073 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-26 13:26:24,074 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-26 13:26:24,074 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-26 13:26:24,074 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-26 13:26:24,074 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-26 13:26:24,074 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-26 13:26:24,074 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-26 13:26:24,075 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-26 13:26:24,075 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-26 13:26:24,075 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-26 13:26:24,075 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-26 13:26:24,075 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-26 13:26:24,075 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-26 13:26:24,075 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-26 13:26:24,075 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-26 13:26:24,075 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-26 13:26:24,075 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-26 13:26:24,075 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-26 13:26:24,076 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES_DISJUNCTIVE [2021-03-26 13:26:24,076 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-26 13:26:24,076 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-26 13:26:24,076 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-26 13:26:24,356 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-26 13:26:24,394 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-26 13:26:24,396 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-26 13:26:24,397 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-26 13:26:24,398 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-26 13:26:24,399 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_11.bpl [2021-03-26 13:26:24,399 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_11.bpl' [2021-03-26 13:26:24,442 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-26 13:26:24,444 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-26 13:26:24,446 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-26 13:26:24,446 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-26 13:26:24,446 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-26 13:26:24,456 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 01:26:24" (1/1) ... [2021-03-26 13:26:24,463 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 01:26:24" (1/1) ... [2021-03-26 13:26:24,471 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-26 13:26:24,472 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-26 13:26:24,472 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-26 13:26:24,472 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-26 13:26:24,478 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 01:26:24" (1/1) ... [2021-03-26 13:26:24,479 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 01:26:24" (1/1) ... [2021-03-26 13:26:24,479 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 01:26:24" (1/1) ... [2021-03-26 13:26:24,480 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 01:26:24" (1/1) ... [2021-03-26 13:26:24,482 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 01:26:24" (1/1) ... [2021-03-26 13:26:24,483 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 01:26:24" (1/1) ... [2021-03-26 13:26:24,483 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 01:26:24" (1/1) ... [2021-03-26 13:26:24,484 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-26 13:26:24,485 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-26 13:26:24,485 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-26 13:26:24,485 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-26 13:26:24,486 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 01:26:24" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-26 13:26:24,538 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2021-03-26 13:26:24,539 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2021-03-26 13:26:24,539 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2021-03-26 13:26:24,539 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2021-03-26 13:26:24,539 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2021-03-26 13:26:24,539 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2021-03-26 13:26:24,539 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2021-03-26 13:26:24,539 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2021-03-26 13:26:24,539 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2021-03-26 13:26:24,540 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2021-03-26 13:26:24,540 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2021-03-26 13:26:24,540 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2021-03-26 13:26:24,540 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2021-03-26 13:26:24,540 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2021-03-26 13:26:24,540 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2021-03-26 13:26:24,540 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_9 given in one single declaration [2021-03-26 13:26:24,540 INFO L130 BoogieDeclarations]: Found specification of procedure set_9 [2021-03-26 13:26:24,540 INFO L138 BoogieDeclarations]: Found implementation of procedure set_9 [2021-03-26 13:26:24,540 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-26 13:26:24,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-26 13:26:24,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-26 13:26:24,541 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_5 given in one single declaration [2021-03-26 13:26:24,541 INFO L130 BoogieDeclarations]: Found specification of procedure set_5 [2021-03-26 13:26:24,541 INFO L138 BoogieDeclarations]: Found implementation of procedure set_5 [2021-03-26 13:26:24,541 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_6 given in one single declaration [2021-03-26 13:26:24,541 INFO L130 BoogieDeclarations]: Found specification of procedure set_6 [2021-03-26 13:26:24,541 INFO L138 BoogieDeclarations]: Found implementation of procedure set_6 [2021-03-26 13:26:24,541 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_10 given in one single declaration [2021-03-26 13:26:24,541 INFO L130 BoogieDeclarations]: Found specification of procedure set_10 [2021-03-26 13:26:24,542 INFO L138 BoogieDeclarations]: Found implementation of procedure set_10 [2021-03-26 13:26:24,542 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_7 given in one single declaration [2021-03-26 13:26:24,542 INFO L130 BoogieDeclarations]: Found specification of procedure set_7 [2021-03-26 13:26:24,542 INFO L138 BoogieDeclarations]: Found implementation of procedure set_7 [2021-03-26 13:26:24,542 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_8 given in one single declaration [2021-03-26 13:26:24,542 INFO L130 BoogieDeclarations]: Found specification of procedure set_8 [2021-03-26 13:26:24,542 INFO L138 BoogieDeclarations]: Found implementation of procedure set_8 [2021-03-26 13:26:24,543 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-26 13:26:24,665 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-26 13:26:24,665 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-26 13:26:24,666 INFO L202 PluginConnector]: Adding new model example_11.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 01:26:24 BoogieIcfgContainer [2021-03-26 13:26:24,667 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-26 13:26:24,668 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-26 13:26:24,668 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-26 13:26:24,670 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-26 13:26:24,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 01:26:24" (1/2) ... [2021-03-26 13:26:24,671 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45d9a114 and model type example_11.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.03 01:26:24, skipping insertion in model container [2021-03-26 13:26:24,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_11.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 01:26:24" (2/2) ... [2021-03-26 13:26:24,673 INFO L111 eAbstractionObserver]: Analyzing ICFG example_11.bpl [2021-03-26 13:26:24,677 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-26 13:26:24,680 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-26 13:26:24,681 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-26 13:26:24,850 INFO L149 ThreadInstanceAdder]: Constructed 121 joinOtherThreadTransitions. [2021-03-26 13:26:24,864 INFO L253 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-03-26 13:26:24,883 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 13:26:24,883 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 13:26:24,883 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 13:26:24,883 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 13:26:24,883 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 13:26:24,883 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 13:26:24,883 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 13:26:24,883 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 13:26:24,895 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 92 places, 168 transitions, 754 flow [2021-03-26 13:26:25,894 INFO L129 PetriNetUnfolder]: 9217/11300 cut-off events. [2021-03-26 13:26:25,894 INFO L130 PetriNetUnfolder]: For 11264/11264 co-relation queries the response was YES. [2021-03-26 13:26:25,927 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22598 conditions, 11300 events. 9217/11300 cut-off events. For 11264/11264 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 45968 event pairs, 0 based on Foata normal form. 0/11299 useless extension candidates. Maximal degree in co-relation 10292. Up to 2772 conditions per place. [2021-03-26 13:26:25,927 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 168 transitions, 754 flow [2021-03-26 13:26:26,041 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 155 transitions, 706 flow [2021-03-26 13:26:26,043 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:26:26,055 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 155 transitions, 706 flow [2021-03-26 13:26:26,058 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 79 places, 155 transitions, 706 flow [2021-03-26 13:26:26,061 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 79 places, 155 transitions, 706 flow [2021-03-26 13:26:26,823 INFO L129 PetriNetUnfolder]: 9217/11298 cut-off events. [2021-03-26 13:26:26,823 INFO L130 PetriNetUnfolder]: For 11264/11264 co-relation queries the response was YES. [2021-03-26 13:26:26,877 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22596 conditions, 11298 events. 9217/11298 cut-off events. For 11264/11264 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 44505 event pairs, 0 based on Foata normal form. 0/11298 useless extension candidates. Maximal degree in co-relation 10292. Up to 2772 conditions per place. [2021-03-26 13:26:27,051 INFO L142 LiptonReduction]: Number of co-enabled transitions 5060 [2021-03-26 13:26:27,249 INFO L154 LiptonReduction]: Checked pairs total: 1375 [2021-03-26 13:26:27,249 INFO L156 LiptonReduction]: Total number of compositions: 11 [2021-03-26 13:26:27,251 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1209 [2021-03-26 13:26:27,833 INFO L129 PetriNetUnfolder]: 9217/11286 cut-off events. [2021-03-26 13:26:27,833 INFO L130 PetriNetUnfolder]: For 11264/11264 co-relation queries the response was YES. [2021-03-26 13:26:27,834 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:26:27,834 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] [2021-03-26 13:26:27,835 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-26 13:26:27,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:26:27,839 INFO L82 PathProgramCache]: Analyzing trace with hash 1169348747, now seen corresponding path program 1 times [2021-03-26 13:26:27,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:26:27,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056910931] [2021-03-26 13:26:27,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:26:27,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:26:27,946 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:26:27,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:26:27,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:26:27,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:26:27,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:26:27,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:26:27,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:26:27,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056910931] [2021-03-26 13:26:27,966 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:26:27,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 13:26:27,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623808081] [2021-03-26 13:26:27,973 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 13:26:27,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:26:27,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 13:26:27,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 13:26:27,985 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 179 [2021-03-26 13:26:27,988 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 144 transitions, 684 flow. Second operand has 3 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:26:27,989 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:26:27,989 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 179 [2021-03-26 13:26:27,990 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:26:28,591 INFO L129 PetriNetUnfolder]: 6657/8341 cut-off events. [2021-03-26 13:26:28,592 INFO L130 PetriNetUnfolder]: For 10753/10753 co-relation queries the response was YES. [2021-03-26 13:26:28,620 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17333 conditions, 8341 events. 6657/8341 cut-off events. For 10753/10753 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 36601 event pairs, 0 based on Foata normal form. 386/8727 useless extension candidates. Maximal degree in co-relation 10266. Up to 2310 conditions per place. [2021-03-26 13:26:28,659 INFO L132 encePairwiseOnDemand]: 173/179 looper letters, 6 selfloop transitions, 1 changer transitions 0/139 dead transitions. [2021-03-26 13:26:28,659 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 139 transitions, 673 flow [2021-03-26 13:26:28,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 13:26:28,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 13:26:28,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 513 transitions. [2021-03-26 13:26:28,669 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9553072625698324 [2021-03-26 13:26:28,670 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 513 transitions. [2021-03-26 13:26:28,671 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 513 transitions. [2021-03-26 13:26:28,672 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:26:28,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 513 transitions. [2021-03-26 13:26:28,677 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 171.0) internal successors, (513), 3 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:26:28,682 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:26:28,683 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:26:28,684 INFO L185 Difference]: Start difference. First operand has 68 places, 144 transitions, 684 flow. Second operand 3 states and 513 transitions. [2021-03-26 13:26:28,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 139 transitions, 673 flow [2021-03-26 13:26:28,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 139 transitions, 419 flow, removed 0 selfloop flow, removed 22 redundant places. [2021-03-26 13:26:28,750 INFO L241 Difference]: Finished difference. Result has 48 places, 139 transitions, 407 flow [2021-03-26 13:26:28,752 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=405, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=407, PETRI_PLACES=48, PETRI_TRANSITIONS=139} [2021-03-26 13:26:28,752 INFO L343 CegarLoopForPetriNet]: 68 programPoint places, -20 predicate places. [2021-03-26 13:26:28,752 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:26:28,753 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 48 places, 139 transitions, 407 flow [2021-03-26 13:26:28,753 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 48 places, 139 transitions, 407 flow [2021-03-26 13:26:28,753 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 48 places, 139 transitions, 407 flow [2021-03-26 13:26:29,078 INFO L129 PetriNetUnfolder]: 6657/8341 cut-off events. [2021-03-26 13:26:29,079 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 13:26:29,096 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8355 conditions, 8341 events. 6657/8341 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 33436 event pairs, 0 based on Foata normal form. 0/8341 useless extension candidates. Maximal degree in co-relation 8340. Up to 2310 conditions per place. [2021-03-26 13:26:29,136 INFO L142 LiptonReduction]: Number of co-enabled transitions 2320 [2021-03-26 13:26:29,154 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:26:29,155 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:26:29,155 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 403 [2021-03-26 13:26:29,156 INFO L480 AbstractCegarLoop]: Abstraction has has 48 places, 139 transitions, 407 flow [2021-03-26 13:26:29,156 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:26:29,156 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:26:29,156 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] [2021-03-26 13:26:29,157 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-26 13:26:29,157 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-26 13:26:29,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:26:29,157 INFO L82 PathProgramCache]: Analyzing trace with hash 932634075, now seen corresponding path program 1 times [2021-03-26 13:26:29,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:26:29,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992412660] [2021-03-26 13:26:29,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:26:29,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:26:29,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:26:29,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:26:29,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:26:29,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:26:29,196 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:26:29,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:26:29,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:26:29,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992412660] [2021-03-26 13:26:29,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:26:29,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 13:26:29,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201592219] [2021-03-26 13:26:29,198 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 13:26:29,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:26:29,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 13:26:29,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 13:26:29,200 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 179 [2021-03-26 13:26:29,201 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 139 transitions, 407 flow. Second operand has 3 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:26:29,201 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:26:29,201 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 179 [2021-03-26 13:26:29,201 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:26:29,440 INFO L129 PetriNetUnfolder]: 3930/5106 cut-off events. [2021-03-26 13:26:29,440 INFO L130 PetriNetUnfolder]: For 768/768 co-relation queries the response was YES. [2021-03-26 13:26:29,445 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5508 conditions, 5106 events. 3930/5106 cut-off events. For 768/768 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 24566 event pairs, 0 based on Foata normal form. 382/5488 useless extension candidates. Maximal degree in co-relation 5492. Up to 1320 conditions per place. [2021-03-26 13:26:29,465 INFO L132 encePairwiseOnDemand]: 172/179 looper letters, 5 selfloop transitions, 1 changer transitions 0/133 dead transitions. [2021-03-26 13:26:29,465 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 133 transitions, 401 flow [2021-03-26 13:26:29,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 13:26:29,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 13:26:29,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 513 transitions. [2021-03-26 13:26:29,467 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9553072625698324 [2021-03-26 13:26:29,467 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 513 transitions. [2021-03-26 13:26:29,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 513 transitions. [2021-03-26 13:26:29,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:26:29,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 513 transitions. [2021-03-26 13:26:29,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 171.0) internal successors, (513), 3 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:26:29,472 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:26:29,472 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:26:29,472 INFO L185 Difference]: Start difference. First operand has 48 places, 139 transitions, 407 flow. Second operand 3 states and 513 transitions. [2021-03-26 13:26:29,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 133 transitions, 401 flow [2021-03-26 13:26:29,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 133 transitions, 400 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 13:26:29,480 INFO L241 Difference]: Finished difference. Result has 49 places, 133 transitions, 390 flow [2021-03-26 13:26:29,481 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=390, PETRI_PLACES=49, PETRI_TRANSITIONS=133} [2021-03-26 13:26:29,481 INFO L343 CegarLoopForPetriNet]: 68 programPoint places, -19 predicate places. [2021-03-26 13:26:29,481 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:26:29,482 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 49 places, 133 transitions, 390 flow [2021-03-26 13:26:29,483 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 49 places, 133 transitions, 390 flow [2021-03-26 13:26:29,483 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 49 places, 133 transitions, 390 flow [2021-03-26 13:26:29,636 INFO L129 PetriNetUnfolder]: 3930/5106 cut-off events. [2021-03-26 13:26:29,636 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 13:26:29,657 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5121 conditions, 5106 events. 3930/5106 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 20798 event pairs, 0 based on Foata normal form. 0/5106 useless extension candidates. Maximal degree in co-relation 5106. Up to 1320 conditions per place. [2021-03-26 13:26:29,696 INFO L142 LiptonReduction]: Number of co-enabled transitions 2200 [2021-03-26 13:26:29,718 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:26:29,719 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:26:29,719 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 238 [2021-03-26 13:26:29,719 INFO L480 AbstractCegarLoop]: Abstraction has has 49 places, 133 transitions, 390 flow [2021-03-26 13:26:29,720 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:26:29,720 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:26:29,720 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] [2021-03-26 13:26:29,720 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-26 13:26:29,720 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-26 13:26:29,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:26:29,721 INFO L82 PathProgramCache]: Analyzing trace with hash 961797627, now seen corresponding path program 1 times [2021-03-26 13:26:29,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:26:29,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362030521] [2021-03-26 13:26:29,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:26:29,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:26:29,764 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:26:29,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:26:29,765 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:26:29,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:26:29,767 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:26:29,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:26:29,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:26:29,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362030521] [2021-03-26 13:26:29,768 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:26:29,768 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 13:26:29,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847267824] [2021-03-26 13:26:29,768 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 13:26:29,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:26:29,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 13:26:29,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 13:26:29,770 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 179 [2021-03-26 13:26:29,770 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 133 transitions, 390 flow. Second operand has 3 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:26:29,770 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:26:29,770 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 179 [2021-03-26 13:26:29,770 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:26:29,879 INFO L129 PetriNetUnfolder]: 1794/2471 cut-off events. [2021-03-26 13:26:29,879 INFO L130 PetriNetUnfolder]: For 479/479 co-relation queries the response was YES. [2021-03-26 13:26:29,884 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2664 conditions, 2471 events. 1794/2471 cut-off events. For 479/479 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 11626 event pairs, 0 based on Foata normal form. 303/2774 useless extension candidates. Maximal degree in co-relation 2648. Up to 495 conditions per place. [2021-03-26 13:26:29,892 INFO L132 encePairwiseOnDemand]: 171/179 looper letters, 4 selfloop transitions, 1 changer transitions 0/126 dead transitions. [2021-03-26 13:26:29,892 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 126 transitions, 379 flow [2021-03-26 13:26:29,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 13:26:29,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 13:26:29,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 513 transitions. [2021-03-26 13:26:29,894 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9553072625698324 [2021-03-26 13:26:29,894 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 513 transitions. [2021-03-26 13:26:29,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 513 transitions. [2021-03-26 13:26:29,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:26:29,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 513 transitions. [2021-03-26 13:26:29,895 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 171.0) internal successors, (513), 3 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:26:29,896 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:26:29,896 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:26:29,896 INFO L185 Difference]: Start difference. First operand has 49 places, 133 transitions, 390 flow. Second operand 3 states and 513 transitions. [2021-03-26 13:26:29,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 126 transitions, 379 flow [2021-03-26 13:26:29,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 126 transitions, 378 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 13:26:29,901 INFO L241 Difference]: Finished difference. Result has 50 places, 126 transitions, 370 flow [2021-03-26 13:26:29,901 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=370, PETRI_PLACES=50, PETRI_TRANSITIONS=126} [2021-03-26 13:26:29,901 INFO L343 CegarLoopForPetriNet]: 68 programPoint places, -18 predicate places. [2021-03-26 13:26:29,902 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:26:29,902 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 50 places, 126 transitions, 370 flow [2021-03-26 13:26:29,903 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 50 places, 126 transitions, 370 flow [2021-03-26 13:26:29,903 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 50 places, 126 transitions, 370 flow [2021-03-26 13:26:29,971 INFO L129 PetriNetUnfolder]: 1794/2471 cut-off events. [2021-03-26 13:26:29,971 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 13:26:29,975 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2487 conditions, 2471 events. 1794/2471 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 10002 event pairs, 0 based on Foata normal form. 0/2471 useless extension candidates. Maximal degree in co-relation 2472. Up to 495 conditions per place. [2021-03-26 13:26:29,989 INFO L142 LiptonReduction]: Number of co-enabled transitions 2060 [2021-03-26 13:26:29,996 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:26:29,996 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:26:29,996 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 94 [2021-03-26 13:26:29,999 INFO L480 AbstractCegarLoop]: Abstraction has has 50 places, 126 transitions, 370 flow [2021-03-26 13:26:29,999 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:26:29,999 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:26:29,999 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] [2021-03-26 13:26:30,000 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-26 13:26:30,000 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-26 13:26:30,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:26:30,003 INFO L82 PathProgramCache]: Analyzing trace with hash -171765885, now seen corresponding path program 1 times [2021-03-26 13:26:30,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:26:30,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253722705] [2021-03-26 13:26:30,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:26:30,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:26:30,049 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:26:30,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:26:30,050 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:26:30,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:26:30,054 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:26:30,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:26:30,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:26:30,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253722705] [2021-03-26 13:26:30,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:26:30,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 13:26:30,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715933261] [2021-03-26 13:26:30,056 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 13:26:30,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:26:30,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 13:26:30,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 13:26:30,057 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 179 [2021-03-26 13:26:30,058 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 126 transitions, 370 flow. Second operand has 3 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:26:30,058 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:26:30,058 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 179 [2021-03-26 13:26:30,058 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:26:30,161 INFO L129 PetriNetUnfolder]: 1640/2288 cut-off events. [2021-03-26 13:26:30,162 INFO L130 PetriNetUnfolder]: For 240/240 co-relation queries the response was YES. [2021-03-26 13:26:30,166 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2517 conditions, 2288 events. 1640/2288 cut-off events. For 240/240 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 10574 event pairs, 0 based on Foata normal form. 29/2317 useless extension candidates. Maximal degree in co-relation 2500. Up to 495 conditions per place. [2021-03-26 13:26:30,174 INFO L132 encePairwiseOnDemand]: 175/179 looper letters, 8 selfloop transitions, 1 changer transitions 0/123 dead transitions. [2021-03-26 13:26:30,174 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 123 transitions, 379 flow [2021-03-26 13:26:30,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 13:26:30,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 13:26:30,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 513 transitions. [2021-03-26 13:26:30,176 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9553072625698324 [2021-03-26 13:26:30,176 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 513 transitions. [2021-03-26 13:26:30,176 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 513 transitions. [2021-03-26 13:26:30,176 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:26:30,176 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 513 transitions. [2021-03-26 13:26:30,177 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 171.0) internal successors, (513), 3 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:26:30,178 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:26:30,178 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:26:30,179 INFO L185 Difference]: Start difference. First operand has 50 places, 126 transitions, 370 flow. Second operand 3 states and 513 transitions. [2021-03-26 13:26:30,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 123 transitions, 379 flow [2021-03-26 13:26:30,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 123 transitions, 378 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 13:26:30,181 INFO L241 Difference]: Finished difference. Result has 51 places, 123 transitions, 362 flow [2021-03-26 13:26:30,181 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=362, PETRI_PLACES=51, PETRI_TRANSITIONS=123} [2021-03-26 13:26:30,182 INFO L343 CegarLoopForPetriNet]: 68 programPoint places, -17 predicate places. [2021-03-26 13:26:30,182 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:26:30,182 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 51 places, 123 transitions, 362 flow [2021-03-26 13:26:30,182 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 51 places, 123 transitions, 362 flow [2021-03-26 13:26:30,183 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 51 places, 123 transitions, 362 flow [2021-03-26 13:26:30,258 INFO L129 PetriNetUnfolder]: 1640/2288 cut-off events. [2021-03-26 13:26:30,258 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 13:26:30,262 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2305 conditions, 2288 events. 1640/2288 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 9375 event pairs, 0 based on Foata normal form. 0/2288 useless extension candidates. Maximal degree in co-relation 2294. Up to 495 conditions per place. [2021-03-26 13:26:30,274 INFO L142 LiptonReduction]: Number of co-enabled transitions 2000 [2021-03-26 13:26:30,280 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:26:30,280 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:26:30,281 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 99 [2021-03-26 13:26:30,281 INFO L480 AbstractCegarLoop]: Abstraction has has 51 places, 123 transitions, 362 flow [2021-03-26 13:26:30,282 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:26:30,282 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:26:30,282 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] [2021-03-26 13:26:30,282 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-26 13:26:30,282 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-26 13:26:30,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:26:30,282 INFO L82 PathProgramCache]: Analyzing trace with hash -387771049, now seen corresponding path program 1 times [2021-03-26 13:26:30,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:26:30,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026574378] [2021-03-26 13:26:30,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:26:30,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:26:30,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:26:30,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:26:30,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:26:30,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:26:30,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:26:30,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:26:30,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:26:30,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026574378] [2021-03-26 13:26:30,300 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:26:30,300 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 13:26:30,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508302459] [2021-03-26 13:26:30,300 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 13:26:30,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:26:30,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 13:26:30,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 13:26:30,301 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 179 [2021-03-26 13:26:30,302 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 123 transitions, 362 flow. Second operand has 3 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:26:30,302 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:26:30,302 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 179 [2021-03-26 13:26:30,302 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:26:30,342 INFO L129 PetriNetUnfolder]: 429/680 cut-off events. [2021-03-26 13:26:30,343 INFO L130 PetriNetUnfolder]: For 218/218 co-relation queries the response was YES. [2021-03-26 13:26:30,344 INFO L84 FinitePrefix]: Finished finitePrefix Result has 710 conditions, 680 events. 429/680 cut-off events. For 218/218 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2831 event pairs, 0 based on Foata normal form. 207/887 useless extension candidates. Maximal degree in co-relation 698. Up to 108 conditions per place. [2021-03-26 13:26:30,346 INFO L132 encePairwiseOnDemand]: 169/179 looper letters, 2 selfloop transitions, 1 changer transitions 0/114 dead transitions. [2021-03-26 13:26:30,346 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 114 transitions, 341 flow [2021-03-26 13:26:30,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 13:26:30,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 13:26:30,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 513 transitions. [2021-03-26 13:26:30,348 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9553072625698324 [2021-03-26 13:26:30,348 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 513 transitions. [2021-03-26 13:26:30,348 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 513 transitions. [2021-03-26 13:26:30,348 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:26:30,348 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 513 transitions. [2021-03-26 13:26:30,349 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 171.0) internal successors, (513), 3 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:26:30,350 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:26:30,350 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:26:30,350 INFO L185 Difference]: Start difference. First operand has 51 places, 123 transitions, 362 flow. Second operand 3 states and 513 transitions. [2021-03-26 13:26:30,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 114 transitions, 341 flow [2021-03-26 13:26:30,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 114 transitions, 340 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 13:26:30,352 INFO L241 Difference]: Finished difference. Result has 52 places, 114 transitions, 336 flow [2021-03-26 13:26:30,353 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=336, PETRI_PLACES=52, PETRI_TRANSITIONS=114} [2021-03-26 13:26:30,353 INFO L343 CegarLoopForPetriNet]: 68 programPoint places, -16 predicate places. [2021-03-26 13:26:30,353 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:26:30,353 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 52 places, 114 transitions, 336 flow [2021-03-26 13:26:30,353 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 52 places, 114 transitions, 336 flow [2021-03-26 13:26:30,354 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 52 places, 114 transitions, 336 flow [2021-03-26 13:26:30,375 INFO L129 PetriNetUnfolder]: 429/680 cut-off events. [2021-03-26 13:26:30,375 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 13:26:30,376 INFO L84 FinitePrefix]: Finished finitePrefix Result has 698 conditions, 680 events. 429/680 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2470 event pairs, 0 based on Foata normal form. 0/680 useless extension candidates. Maximal degree in co-relation 687. Up to 108 conditions per place. [2021-03-26 13:26:30,380 INFO L142 LiptonReduction]: Number of co-enabled transitions 1640 [2021-03-26 13:26:30,385 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:26:30,385 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:26:30,386 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 33 [2021-03-26 13:26:30,386 INFO L480 AbstractCegarLoop]: Abstraction has has 52 places, 114 transitions, 336 flow [2021-03-26 13:26:30,387 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:26:30,387 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:26:30,387 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] [2021-03-26 13:26:30,387 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-26 13:26:30,387 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-26 13:26:30,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:26:30,388 INFO L82 PathProgramCache]: Analyzing trace with hash -1715683835, now seen corresponding path program 1 times [2021-03-26 13:26:30,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:26:30,388 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436224052] [2021-03-26 13:26:30,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:26:30,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:26:30,397 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:26:30,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:26:30,399 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:26:30,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:26:30,401 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:26:30,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:26:30,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:26:30,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436224052] [2021-03-26 13:26:30,402 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:26:30,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 13:26:30,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538974653] [2021-03-26 13:26:30,403 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 13:26:30,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:26:30,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 13:26:30,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 13:26:30,404 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 179 [2021-03-26 13:26:30,404 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 114 transitions, 336 flow. Second operand has 3 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:26:30,405 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:26:30,405 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 179 [2021-03-26 13:26:30,405 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:26:30,423 INFO L129 PetriNetUnfolder]: 95/191 cut-off events. [2021-03-26 13:26:30,424 INFO L130 PetriNetUnfolder]: For 73/73 co-relation queries the response was YES. [2021-03-26 13:26:30,424 INFO L84 FinitePrefix]: Finished finitePrefix Result has 212 conditions, 191 events. 95/191 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 638 event pairs, 0 based on Foata normal form. 72/263 useless extension candidates. Maximal degree in co-relation 200. Up to 30 conditions per place. [2021-03-26 13:26:30,425 INFO L132 encePairwiseOnDemand]: 168/179 looper letters, 1 selfloop transitions, 1 changer transitions 0/85 dead transitions. [2021-03-26 13:26:30,425 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 85 transitions, 253 flow [2021-03-26 13:26:30,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 13:26:30,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 13:26:30,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 513 transitions. [2021-03-26 13:26:30,426 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9553072625698324 [2021-03-26 13:26:30,426 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 513 transitions. [2021-03-26 13:26:30,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 513 transitions. [2021-03-26 13:26:30,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:26:30,427 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 513 transitions. [2021-03-26 13:26:30,428 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 171.0) internal successors, (513), 3 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:26:30,429 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:26:30,429 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:26:30,429 INFO L185 Difference]: Start difference. First operand has 52 places, 114 transitions, 336 flow. Second operand 3 states and 513 transitions. [2021-03-26 13:26:30,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 85 transitions, 253 flow [2021-03-26 13:26:30,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 85 transitions, 252 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 13:26:30,431 INFO L241 Difference]: Finished difference. Result has 53 places, 85 transitions, 250 flow [2021-03-26 13:26:30,431 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=250, PETRI_PLACES=53, PETRI_TRANSITIONS=85} [2021-03-26 13:26:30,431 INFO L343 CegarLoopForPetriNet]: 68 programPoint places, -15 predicate places. [2021-03-26 13:26:30,431 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:26:30,431 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 53 places, 85 transitions, 250 flow [2021-03-26 13:26:30,432 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 53 places, 85 transitions, 250 flow [2021-03-26 13:26:30,432 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 53 places, 85 transitions, 250 flow [2021-03-26 13:26:30,438 INFO L129 PetriNetUnfolder]: 95/191 cut-off events. [2021-03-26 13:26:30,439 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 13:26:30,439 INFO L84 FinitePrefix]: Finished finitePrefix Result has 210 conditions, 191 events. 95/191 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 540 event pairs, 0 based on Foata normal form. 0/191 useless extension candidates. Maximal degree in co-relation 199. Up to 30 conditions per place. [2021-03-26 13:26:30,440 INFO L142 LiptonReduction]: Number of co-enabled transitions 1022 [2021-03-26 13:26:30,443 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:26:30,444 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:26:30,444 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 13 [2021-03-26 13:26:30,444 INFO L480 AbstractCegarLoop]: Abstraction has has 53 places, 85 transitions, 250 flow [2021-03-26 13:26:30,445 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:26:30,445 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:26:30,445 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] [2021-03-26 13:26:30,445 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-26 13:26:30,445 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-26 13:26:30,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:26:30,446 INFO L82 PathProgramCache]: Analyzing trace with hash 1910450227, now seen corresponding path program 1 times [2021-03-26 13:26:30,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:26:30,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19606341] [2021-03-26 13:26:30,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:26:30,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:26:30,460 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:26:30,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:26:30,461 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:26:30,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:26:30,469 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:26:30,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:26:30,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:26:30,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19606341] [2021-03-26 13:26:30,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:26:30,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 13:26:30,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680715933] [2021-03-26 13:26:30,471 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 13:26:30,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:26:30,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 13:26:30,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 13:26:30,472 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 179 [2021-03-26 13:26:30,472 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 85 transitions, 250 flow. Second operand has 3 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:26:30,473 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:26:30,473 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 179 [2021-03-26 13:26:30,473 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:26:30,488 INFO L129 PetriNetUnfolder]: 21/70 cut-off events. [2021-03-26 13:26:30,489 INFO L130 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2021-03-26 13:26:30,489 INFO L84 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 70 events. 21/70 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 125 event pairs, 0 based on Foata normal form. 23/93 useless extension candidates. Maximal degree in co-relation 80. Up to 12 conditions per place. [2021-03-26 13:26:30,489 INFO L132 encePairwiseOnDemand]: 170/179 looper letters, 1 selfloop transitions, 1 changer transitions 0/51 dead transitions. [2021-03-26 13:26:30,489 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 51 transitions, 152 flow [2021-03-26 13:26:30,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 13:26:30,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 13:26:30,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 511 transitions. [2021-03-26 13:26:30,491 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9515828677839852 [2021-03-26 13:26:30,491 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 511 transitions. [2021-03-26 13:26:30,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 511 transitions. [2021-03-26 13:26:30,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:26:30,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 511 transitions. [2021-03-26 13:26:30,493 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 170.33333333333334) internal successors, (511), 3 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:26:30,494 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:26:30,494 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:26:30,494 INFO L185 Difference]: Start difference. First operand has 53 places, 85 transitions, 250 flow. Second operand 3 states and 511 transitions. [2021-03-26 13:26:30,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 51 transitions, 152 flow [2021-03-26 13:26:30,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 51 transitions, 151 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 13:26:30,495 INFO L241 Difference]: Finished difference. Result has 54 places, 51 transitions, 149 flow [2021-03-26 13:26:30,496 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=149, PETRI_PLACES=54, PETRI_TRANSITIONS=51} [2021-03-26 13:26:30,496 INFO L343 CegarLoopForPetriNet]: 68 programPoint places, -14 predicate places. [2021-03-26 13:26:30,496 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:26:30,496 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 54 places, 51 transitions, 149 flow [2021-03-26 13:26:30,496 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 54 places, 51 transitions, 149 flow [2021-03-26 13:26:30,497 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 54 places, 51 transitions, 149 flow [2021-03-26 13:26:30,500 INFO L129 PetriNetUnfolder]: 21/70 cut-off events. [2021-03-26 13:26:30,500 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 13:26:30,500 INFO L84 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 70 events. 21/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 122 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 79. Up to 12 conditions per place. [2021-03-26 13:26:30,501 INFO L142 LiptonReduction]: Number of co-enabled transitions 626 [2021-03-26 13:26:30,503 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:26:30,503 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:26:30,503 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 7 [2021-03-26 13:26:30,506 INFO L480 AbstractCegarLoop]: Abstraction has has 54 places, 51 transitions, 149 flow [2021-03-26 13:26:30,507 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:26:30,507 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:26:30,507 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] [2021-03-26 13:26:30,507 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-26 13:26:30,508 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-26 13:26:30,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:26:30,508 INFO L82 PathProgramCache]: Analyzing trace with hash -387132387, now seen corresponding path program 1 times [2021-03-26 13:26:30,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:26:30,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198657903] [2021-03-26 13:26:30,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:26:30,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:26:30,536 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:26:30,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:26:30,538 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:26:30,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:26:30,541 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:26:30,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:26:30,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:26:30,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198657903] [2021-03-26 13:26:30,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:26:30,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 13:26:30,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651364028] [2021-03-26 13:26:30,561 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 13:26:30,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:26:30,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 13:26:30,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 13:26:30,563 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 179 [2021-03-26 13:26:30,563 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 51 transitions, 149 flow. Second operand has 3 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:26:30,563 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:26:30,563 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 179 [2021-03-26 13:26:30,563 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:26:30,573 INFO L129 PetriNetUnfolder]: 12/57 cut-off events. [2021-03-26 13:26:30,573 INFO L130 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2021-03-26 13:26:30,573 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 57 events. 12/57 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 79 event pairs, 0 based on Foata normal form. 4/61 useless extension candidates. Maximal degree in co-relation 71. Up to 8 conditions per place. [2021-03-26 13:26:30,573 INFO L132 encePairwiseOnDemand]: 176/179 looper letters, 3 selfloop transitions, 1 changer transitions 0/49 dead transitions. [2021-03-26 13:26:30,573 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 49 transitions, 151 flow [2021-03-26 13:26:30,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 13:26:30,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 13:26:30,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 507 transitions. [2021-03-26 13:26:30,576 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9441340782122905 [2021-03-26 13:26:30,576 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 507 transitions. [2021-03-26 13:26:30,576 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 507 transitions. [2021-03-26 13:26:30,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:26:30,576 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 507 transitions. [2021-03-26 13:26:30,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 169.0) internal successors, (507), 3 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:26:30,578 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:26:30,578 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:26:30,579 INFO L185 Difference]: Start difference. First operand has 54 places, 51 transitions, 149 flow. Second operand 3 states and 507 transitions. [2021-03-26 13:26:30,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 49 transitions, 151 flow [2021-03-26 13:26:30,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 49 transitions, 150 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 13:26:30,581 INFO L241 Difference]: Finished difference. Result has 55 places, 49 transitions, 144 flow [2021-03-26 13:26:30,581 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=144, PETRI_PLACES=55, PETRI_TRANSITIONS=49} [2021-03-26 13:26:30,581 INFO L343 CegarLoopForPetriNet]: 68 programPoint places, -13 predicate places. [2021-03-26 13:26:30,581 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:26:30,581 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 55 places, 49 transitions, 144 flow [2021-03-26 13:26:30,581 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 55 places, 49 transitions, 144 flow [2021-03-26 13:26:30,582 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 55 places, 49 transitions, 144 flow [2021-03-26 13:26:30,585 INFO L129 PetriNetUnfolder]: 12/57 cut-off events. [2021-03-26 13:26:30,586 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 13:26:30,586 INFO L84 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 57 events. 12/57 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 85 event pairs, 0 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 69. Up to 8 conditions per place. [2021-03-26 13:26:30,586 INFO L142 LiptonReduction]: Number of co-enabled transitions 574 [2021-03-26 13:26:30,588 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:26:30,588 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:26:30,588 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 7 [2021-03-26 13:26:30,589 INFO L480 AbstractCegarLoop]: Abstraction has has 55 places, 49 transitions, 144 flow [2021-03-26 13:26:30,589 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:26:30,590 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:26:30,590 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] [2021-03-26 13:26:30,590 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-26 13:26:30,590 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-26 13:26:30,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:26:30,590 INFO L82 PathProgramCache]: Analyzing trace with hash 294836189, now seen corresponding path program 1 times [2021-03-26 13:26:30,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:26:30,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761745675] [2021-03-26 13:26:30,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:26:30,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:26:30,735 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:26:30,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:26:30,741 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:26:30,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 13:26:30,754 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-26 13:26:30,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:26:30,773 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-26 13:26:30,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-26 13:26:30,805 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-26 13:26:30,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-26 13:26:30,847 INFO L142 QuantifierPusher]: treesize reduction 9, result has 81.3 percent of original size [2021-03-26 13:26:30,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-26 13:26:30,893 INFO L142 QuantifierPusher]: treesize reduction 9, result has 83.3 percent of original size [2021-03-26 13:26:30,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-26 13:26:30,941 INFO L142 QuantifierPusher]: treesize reduction 27, result has 67.1 percent of original size [2021-03-26 13:26:30,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-03-26 13:26:31,003 INFO L142 QuantifierPusher]: treesize reduction 45, result has 59.1 percent of original size [2021-03-26 13:26:31,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-03-26 13:26:31,093 INFO L142 QuantifierPusher]: treesize reduction 63, result has 54.3 percent of original size [2021-03-26 13:26:31,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-03-26 13:26:31,180 INFO L142 QuantifierPusher]: treesize reduction 81, result has 49.4 percent of original size [2021-03-26 13:26:31,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-03-26 13:26:31,236 INFO L142 QuantifierPusher]: treesize reduction 90, result has 47.4 percent of original size [2021-03-26 13:26:31,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-03-26 13:26:31,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:26:31,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761745675] [2021-03-26 13:26:31,289 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:26:31,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-03-26 13:26:31,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090213145] [2021-03-26 13:26:31,290 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-03-26 13:26:31,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:26:31,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-03-26 13:26:31,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2021-03-26 13:26:31,292 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 179 [2021-03-26 13:26:31,294 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 49 transitions, 144 flow. Second operand has 13 states, 13 states have (on average 155.92307692307693) internal successors, (2027), 13 states have internal predecessors, (2027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:26:31,294 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:26:31,294 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 179 [2021-03-26 13:26:31,294 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:26:32,450 INFO L129 PetriNetUnfolder]: 13170/17677 cut-off events. [2021-03-26 13:26:32,451 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 13:26:32,608 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33070 conditions, 17677 events. 13170/17677 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1259. Compared 99852 event pairs, 4097 based on Foata normal form. 1/17127 useless extension candidates. Maximal degree in co-relation 33060. Up to 5633 conditions per place. [2021-03-26 13:26:32,704 INFO L132 encePairwiseOnDemand]: 167/179 looper letters, 65 selfloop transitions, 11 changer transitions 0/113 dead transitions. [2021-03-26 13:26:32,704 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 113 transitions, 424 flow [2021-03-26 13:26:32,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-26 13:26:32,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-26 13:26:32,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2092 transitions. [2021-03-26 13:26:32,708 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8990116029222175 [2021-03-26 13:26:32,708 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2092 transitions. [2021-03-26 13:26:32,708 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2092 transitions. [2021-03-26 13:26:32,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:26:32,709 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2092 transitions. [2021-03-26 13:26:32,712 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 160.92307692307693) internal successors, (2092), 13 states have internal predecessors, (2092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:26:32,715 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 179.0) internal successors, (2506), 14 states have internal predecessors, (2506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:26:32,716 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 179.0) internal successors, (2506), 14 states have internal predecessors, (2506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:26:32,716 INFO L185 Difference]: Start difference. First operand has 55 places, 49 transitions, 144 flow. Second operand 13 states and 2092 transitions. [2021-03-26 13:26:32,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 113 transitions, 424 flow [2021-03-26 13:26:32,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 113 transitions, 423 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 13:26:32,719 INFO L241 Difference]: Finished difference. Result has 77 places, 59 transitions, 228 flow [2021-03-26 13:26:32,719 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=228, PETRI_PLACES=77, PETRI_TRANSITIONS=59} [2021-03-26 13:26:32,720 INFO L343 CegarLoopForPetriNet]: 68 programPoint places, 9 predicate places. [2021-03-26 13:26:32,720 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:26:32,720 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 59 transitions, 228 flow [2021-03-26 13:26:32,720 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 59 transitions, 228 flow [2021-03-26 13:26:32,720 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 77 places, 59 transitions, 228 flow [2021-03-26 13:26:32,734 INFO L129 PetriNetUnfolder]: 72/269 cut-off events. [2021-03-26 13:26:32,735 INFO L130 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2021-03-26 13:26:32,736 INFO L84 FinitePrefix]: Finished finitePrefix Result has 361 conditions, 269 events. 72/269 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1368 event pairs, 0 based on Foata normal form. 0/238 useless extension candidates. Maximal degree in co-relation 341. Up to 51 conditions per place. [2021-03-26 13:26:32,738 INFO L142 LiptonReduction]: Number of co-enabled transitions 968 [2021-03-26 13:26:32,741 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:26:32,741 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:26:32,741 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 21 [2021-03-26 13:26:32,742 INFO L480 AbstractCegarLoop]: Abstraction has has 77 places, 59 transitions, 228 flow [2021-03-26 13:26:32,742 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 155.92307692307693) internal successors, (2027), 13 states have internal predecessors, (2027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:26:32,743 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:26:32,743 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] [2021-03-26 13:26:32,743 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-26 13:26:32,743 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-26 13:26:32,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:26:32,744 INFO L82 PathProgramCache]: Analyzing trace with hash -1223284559, now seen corresponding path program 1 times [2021-03-26 13:26:32,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:26:32,744 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781592655] [2021-03-26 13:26:32,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:26:32,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:26:32,753 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:26:32,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:26:32,754 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:26:32,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:26:32,756 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:26:32,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:26:32,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:26:32,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781592655] [2021-03-26 13:26:32,757 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:26:32,757 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 13:26:32,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036734596] [2021-03-26 13:26:32,758 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 13:26:32,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:26:32,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 13:26:32,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 13:26:32,759 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 179 [2021-03-26 13:26:32,759 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 59 transitions, 228 flow. Second operand has 3 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:26:32,759 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:26:32,759 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 179 [2021-03-26 13:26:32,759 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:26:32,773 INFO L129 PetriNetUnfolder]: 4/144 cut-off events. [2021-03-26 13:26:32,773 INFO L130 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2021-03-26 13:26:32,773 INFO L84 FinitePrefix]: Finished finitePrefix Result has 245 conditions, 144 events. 4/144 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 657 event pairs, 0 based on Foata normal form. 21/148 useless extension candidates. Maximal degree in co-relation 224. Up to 11 conditions per place. [2021-03-26 13:26:32,774 INFO L132 encePairwiseOnDemand]: 174/179 looper letters, 1 selfloop transitions, 1 changer transitions 0/46 dead transitions. [2021-03-26 13:26:32,774 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 46 transitions, 193 flow [2021-03-26 13:26:32,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 13:26:32,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 13:26:32,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 507 transitions. [2021-03-26 13:26:32,775 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9441340782122905 [2021-03-26 13:26:32,775 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 507 transitions. [2021-03-26 13:26:32,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 507 transitions. [2021-03-26 13:26:32,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:26:32,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 507 transitions. [2021-03-26 13:26:32,776 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 169.0) internal successors, (507), 3 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:26:32,777 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:26:32,777 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:26:32,778 INFO L185 Difference]: Start difference. First operand has 77 places, 59 transitions, 228 flow. Second operand 3 states and 507 transitions. [2021-03-26 13:26:32,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 46 transitions, 193 flow [2021-03-26 13:26:32,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 46 transitions, 192 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 13:26:32,779 INFO L241 Difference]: Finished difference. Result has 78 places, 46 transitions, 190 flow [2021-03-26 13:26:32,779 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=190, PETRI_PLACES=78, PETRI_TRANSITIONS=46} [2021-03-26 13:26:32,779 INFO L343 CegarLoopForPetriNet]: 68 programPoint places, 10 predicate places. [2021-03-26 13:26:32,779 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:26:32,780 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 46 transitions, 190 flow [2021-03-26 13:26:32,780 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 46 transitions, 190 flow [2021-03-26 13:26:32,780 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 78 places, 46 transitions, 190 flow [2021-03-26 13:26:32,788 INFO L129 PetriNetUnfolder]: 4/144 cut-off events. [2021-03-26 13:26:32,788 INFO L130 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2021-03-26 13:26:32,789 INFO L84 FinitePrefix]: Finished finitePrefix Result has 237 conditions, 144 events. 4/144 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 663 event pairs, 0 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 217. Up to 11 conditions per place. [2021-03-26 13:26:32,790 INFO L142 LiptonReduction]: Number of co-enabled transitions 582 [2021-03-26 13:26:32,791 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:26:32,791 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:26:32,791 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 12 [2021-03-26 13:26:32,792 INFO L480 AbstractCegarLoop]: Abstraction has has 78 places, 46 transitions, 190 flow [2021-03-26 13:26:32,792 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:26:32,792 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:26:32,792 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] [2021-03-26 13:26:32,792 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-26 13:26:32,792 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-26 13:26:32,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:26:32,793 INFO L82 PathProgramCache]: Analyzing trace with hash -223924269, now seen corresponding path program 2 times [2021-03-26 13:26:32,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:26:32,793 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548545442] [2021-03-26 13:26:32,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:26:32,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:26:32,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:26:32,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:26:32,829 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:26:32,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 13:26:32,834 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-26 13:26:32,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:26:32,846 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-26 13:26:32,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 13:26:32,863 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-26 13:26:32,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-26 13:26:32,891 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-26 13:26:32,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-26 13:26:32,924 INFO L142 QuantifierPusher]: treesize reduction 27, result has 64.5 percent of original size [2021-03-26 13:26:32,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-26 13:26:32,966 INFO L142 QuantifierPusher]: treesize reduction 36, result has 61.3 percent of original size [2021-03-26 13:26:32,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-03-26 13:26:33,018 INFO L142 QuantifierPusher]: treesize reduction 54, result has 55.4 percent of original size [2021-03-26 13:26:33,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-03-26 13:26:33,085 INFO L142 QuantifierPusher]: treesize reduction 63, result has 54.3 percent of original size [2021-03-26 13:26:33,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-03-26 13:26:33,166 INFO L142 QuantifierPusher]: treesize reduction 81, result has 49.4 percent of original size [2021-03-26 13:26:33,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-03-26 13:26:33,229 INFO L142 QuantifierPusher]: treesize reduction 90, result has 47.4 percent of original size [2021-03-26 13:26:33,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-03-26 13:26:33,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:26:33,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548545442] [2021-03-26 13:26:33,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:26:33,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-03-26 13:26:33,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111346627] [2021-03-26 13:26:33,280 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-03-26 13:26:33,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:26:33,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-03-26 13:26:33,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2021-03-26 13:26:33,282 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 179 [2021-03-26 13:26:33,283 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 46 transitions, 190 flow. Second operand has 13 states, 13 states have (on average 155.92307692307693) internal successors, (2027), 13 states have internal predecessors, (2027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:26:33,283 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:26:33,283 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 179 [2021-03-26 13:26:33,283 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:26:34,612 INFO L129 PetriNetUnfolder]: 13678/18048 cut-off events. [2021-03-26 13:26:34,612 INFO L130 PetriNetUnfolder]: For 17556/17645 co-relation queries the response was YES. [2021-03-26 13:26:34,817 INFO L84 FinitePrefix]: Finished finitePrefix Result has 53449 conditions, 18048 events. 13678/18048 cut-off events. For 17556/17645 co-relation queries the response was YES. Maximal size of possible extension queue 1211. Compared 95112 event pairs, 4351 based on Foata normal form. 1/17659 useless extension candidates. Maximal degree in co-relation 53428. Up to 7434 conditions per place. [2021-03-26 13:26:34,915 INFO L132 encePairwiseOnDemand]: 167/179 looper letters, 74 selfloop transitions, 12 changer transitions 0/110 dead transitions. [2021-03-26 13:26:34,915 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 110 transitions, 618 flow [2021-03-26 13:26:34,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-26 13:26:34,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-26 13:26:34,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2092 transitions. [2021-03-26 13:26:34,920 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8990116029222175 [2021-03-26 13:26:34,920 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2092 transitions. [2021-03-26 13:26:34,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2092 transitions. [2021-03-26 13:26:34,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:26:34,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2092 transitions. [2021-03-26 13:26:34,925 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 160.92307692307693) internal successors, (2092), 13 states have internal predecessors, (2092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:26:34,929 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 179.0) internal successors, (2506), 14 states have internal predecessors, (2506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:26:34,930 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 179.0) internal successors, (2506), 14 states have internal predecessors, (2506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:26:34,930 INFO L185 Difference]: Start difference. First operand has 78 places, 46 transitions, 190 flow. Second operand 13 states and 2092 transitions. [2021-03-26 13:26:34,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 110 transitions, 618 flow [2021-03-26 13:26:34,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 110 transitions, 617 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 13:26:34,948 INFO L241 Difference]: Finished difference. Result has 100 places, 56 transitions, 297 flow [2021-03-26 13:26:34,949 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=297, PETRI_PLACES=100, PETRI_TRANSITIONS=56} [2021-03-26 13:26:34,949 INFO L343 CegarLoopForPetriNet]: 68 programPoint places, 32 predicate places. [2021-03-26 13:26:34,949 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:26:34,949 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 100 places, 56 transitions, 297 flow [2021-03-26 13:26:34,949 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 100 places, 56 transitions, 297 flow [2021-03-26 13:26:34,950 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 100 places, 56 transitions, 297 flow [2021-03-26 13:26:34,971 INFO L129 PetriNetUnfolder]: 7/246 cut-off events. [2021-03-26 13:26:34,971 INFO L130 PetriNetUnfolder]: For 100/100 co-relation queries the response was YES. [2021-03-26 13:26:34,972 INFO L84 FinitePrefix]: Finished finitePrefix Result has 445 conditions, 246 events. 7/246 cut-off events. For 100/100 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1594 event pairs, 0 based on Foata normal form. 0/215 useless extension candidates. Maximal degree in co-relation 414. Up to 20 conditions per place. [2021-03-26 13:26:34,974 INFO L142 LiptonReduction]: Number of co-enabled transitions 798 [2021-03-26 13:26:34,976 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:26:34,976 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:26:34,977 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 28 [2021-03-26 13:26:34,980 INFO L480 AbstractCegarLoop]: Abstraction has has 100 places, 56 transitions, 297 flow [2021-03-26 13:26:34,981 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 155.92307692307693) internal successors, (2027), 13 states have internal predecessors, (2027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:26:34,981 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:26:34,981 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] [2021-03-26 13:26:34,981 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-26 13:26:34,981 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-26 13:26:34,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:26:34,982 INFO L82 PathProgramCache]: Analyzing trace with hash -1600649307, now seen corresponding path program 3 times [2021-03-26 13:26:34,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:26:34,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048096880] [2021-03-26 13:26:34,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:26:34,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:26:35,062 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:26:35,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:26:35,065 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:26:35,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 13:26:35,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:26:35,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:26:35,077 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-26 13:26:35,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:26:35,088 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-26 13:26:35,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 13:26:35,104 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-26 13:26:35,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:26:35,124 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-26 13:26:35,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-26 13:26:35,150 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-03-26 13:26:35,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-03-26 13:26:35,181 INFO L142 QuantifierPusher]: treesize reduction 63, result has 50.0 percent of original size [2021-03-26 13:26:35,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-03-26 13:26:35,220 INFO L142 QuantifierPusher]: treesize reduction 72, result has 49.7 percent of original size [2021-03-26 13:26:35,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-03-26 13:26:35,269 INFO L142 QuantifierPusher]: treesize reduction 72, result has 51.7 percent of original size [2021-03-26 13:26:35,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-03-26 13:26:35,327 INFO L142 QuantifierPusher]: treesize reduction 90, result has 47.4 percent of original size [2021-03-26 13:26:35,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-03-26 13:26:35,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:26:35,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048096880] [2021-03-26 13:26:35,382 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:26:35,382 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-03-26 13:26:35,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712422729] [2021-03-26 13:26:35,383 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-03-26 13:26:35,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:26:35,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-03-26 13:26:35,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2021-03-26 13:26:35,385 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 179 [2021-03-26 13:26:35,388 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 56 transitions, 297 flow. Second operand has 13 states, 13 states have (on average 155.92307692307693) internal successors, (2027), 13 states have internal predecessors, (2027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:26:35,388 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:26:35,388 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 179 [2021-03-26 13:26:35,388 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:26:38,164 INFO L129 PetriNetUnfolder]: 19185/29925 cut-off events. [2021-03-26 13:26:38,164 INFO L130 PetriNetUnfolder]: For 78159/78347 co-relation queries the response was YES. [2021-03-26 13:26:38,662 INFO L84 FinitePrefix]: Finished finitePrefix Result has 103344 conditions, 29925 events. 19185/29925 cut-off events. For 78159/78347 co-relation queries the response was YES. Maximal size of possible extension queue 2325. Compared 242386 event pairs, 5380 based on Foata normal form. 3/29468 useless extension candidates. Maximal degree in co-relation 103312. Up to 8988 conditions per place. [2021-03-26 13:26:38,837 INFO L132 encePairwiseOnDemand]: 167/179 looper letters, 114 selfloop transitions, 24 changer transitions 0/162 dead transitions. [2021-03-26 13:26:38,837 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 162 transitions, 1269 flow [2021-03-26 13:26:38,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-26 13:26:38,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-26 13:26:38,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2092 transitions. [2021-03-26 13:26:38,842 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8990116029222175 [2021-03-26 13:26:38,842 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2092 transitions. [2021-03-26 13:26:38,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2092 transitions. [2021-03-26 13:26:38,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:26:38,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2092 transitions. [2021-03-26 13:26:38,847 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 160.92307692307693) internal successors, (2092), 13 states have internal predecessors, (2092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:26:38,850 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 179.0) internal successors, (2506), 14 states have internal predecessors, (2506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:26:38,851 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 179.0) internal successors, (2506), 14 states have internal predecessors, (2506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:26:38,851 INFO L185 Difference]: Start difference. First operand has 100 places, 56 transitions, 297 flow. Second operand 13 states and 2092 transitions. [2021-03-26 13:26:38,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 162 transitions, 1269 flow [2021-03-26 13:26:39,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 162 transitions, 1225 flow, removed 13 selfloop flow, removed 1 redundant places. [2021-03-26 13:26:39,518 INFO L241 Difference]: Finished difference. Result has 122 places, 73 transitions, 512 flow [2021-03-26 13:26:39,518 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=512, PETRI_PLACES=122, PETRI_TRANSITIONS=73} [2021-03-26 13:26:39,518 INFO L343 CegarLoopForPetriNet]: 68 programPoint places, 54 predicate places. [2021-03-26 13:26:39,518 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:26:39,518 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 122 places, 73 transitions, 512 flow [2021-03-26 13:26:39,519 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 122 places, 73 transitions, 512 flow [2021-03-26 13:26:39,519 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 122 places, 73 transitions, 512 flow [2021-03-26 13:26:39,580 INFO L129 PetriNetUnfolder]: 20/747 cut-off events. [2021-03-26 13:26:39,580 INFO L130 PetriNetUnfolder]: For 740/764 co-relation queries the response was YES. [2021-03-26 13:26:39,584 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1435 conditions, 747 events. 20/747 cut-off events. For 740/764 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 7576 event pairs, 0 based on Foata normal form. 0/652 useless extension candidates. Maximal degree in co-relation 1393. Up to 70 conditions per place. [2021-03-26 13:26:39,592 INFO L142 LiptonReduction]: Number of co-enabled transitions 1188 [2021-03-26 13:26:39,594 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:26:39,594 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:26:39,594 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 76 [2021-03-26 13:26:39,595 INFO L480 AbstractCegarLoop]: Abstraction has has 122 places, 73 transitions, 512 flow [2021-03-26 13:26:39,596 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 155.92307692307693) internal successors, (2027), 13 states have internal predecessors, (2027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:26:39,596 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:26:39,596 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] [2021-03-26 13:26:39,596 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-26 13:26:39,596 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-26 13:26:39,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:26:39,596 INFO L82 PathProgramCache]: Analyzing trace with hash -1110659359, now seen corresponding path program 4 times [2021-03-26 13:26:39,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:26:39,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935565803] [2021-03-26 13:26:39,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:26:39,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:26:39,655 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:26:39,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:26:39,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:26:39,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 13:26:39,670 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:26:39,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:26:39,677 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-26 13:26:39,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:26:39,697 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-26 13:26:39,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 13:26:39,713 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-26 13:26:39,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:26:39,739 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-26 13:26:39,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-26 13:26:39,766 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-03-26 13:26:39,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-03-26 13:26:39,804 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-03-26 13:26:39,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-26 13:26:39,842 INFO L142 QuantifierPusher]: treesize reduction 54, result has 55.4 percent of original size [2021-03-26 13:26:39,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-03-26 13:26:39,891 INFO L142 QuantifierPusher]: treesize reduction 72, result has 51.7 percent of original size [2021-03-26 13:26:39,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-03-26 13:26:39,938 INFO L142 QuantifierPusher]: treesize reduction 90, result has 47.4 percent of original size [2021-03-26 13:26:39,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-03-26 13:26:39,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:26:39,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935565803] [2021-03-26 13:26:39,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:26:39,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-03-26 13:26:39,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355724091] [2021-03-26 13:26:39,982 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-03-26 13:26:39,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:26:39,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-03-26 13:26:39,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2021-03-26 13:26:39,984 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 179 [2021-03-26 13:26:39,985 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 73 transitions, 512 flow. Second operand has 13 states, 13 states have (on average 155.92307692307693) internal successors, (2027), 13 states have internal predecessors, (2027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:26:39,985 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:26:39,985 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 179 [2021-03-26 13:26:39,985 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:26:44,818 INFO L129 PetriNetUnfolder]: 25686/41825 cut-off events. [2021-03-26 13:26:44,818 INFO L130 PetriNetUnfolder]: For 211197/211581 co-relation queries the response was YES. [2021-03-26 13:26:45,192 INFO L84 FinitePrefix]: Finished finitePrefix Result has 175961 conditions, 41825 events. 25686/41825 cut-off events. For 211197/211581 co-relation queries the response was YES. Maximal size of possible extension queue 3067. Compared 357446 event pairs, 7727 based on Foata normal form. 1/41341 useless extension candidates. Maximal degree in co-relation 175918. Up to 12426 conditions per place. [2021-03-26 13:26:45,381 INFO L132 encePairwiseOnDemand]: 167/179 looper letters, 165 selfloop transitions, 41 changer transitions 0/230 dead transitions. [2021-03-26 13:26:45,382 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 230 transitions, 2278 flow [2021-03-26 13:26:45,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-26 13:26:45,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-26 13:26:45,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2092 transitions. [2021-03-26 13:26:45,385 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8990116029222175 [2021-03-26 13:26:45,385 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2092 transitions. [2021-03-26 13:26:45,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2092 transitions. [2021-03-26 13:26:45,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:26:45,386 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2092 transitions. [2021-03-26 13:26:45,389 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 160.92307692307693) internal successors, (2092), 13 states have internal predecessors, (2092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:26:45,391 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 179.0) internal successors, (2506), 14 states have internal predecessors, (2506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:26:45,392 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 179.0) internal successors, (2506), 14 states have internal predecessors, (2506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:26:45,392 INFO L185 Difference]: Start difference. First operand has 122 places, 73 transitions, 512 flow. Second operand 13 states and 2092 transitions. [2021-03-26 13:26:45,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 230 transitions, 2278 flow [2021-03-26 13:26:45,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 230 transitions, 2203 flow, removed 26 selfloop flow, removed 1 redundant places. [2021-03-26 13:26:45,827 INFO L241 Difference]: Finished difference. Result has 144 places, 110 transitions, 1053 flow [2021-03-26 13:26:45,828 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=491, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1053, PETRI_PLACES=144, PETRI_TRANSITIONS=110} [2021-03-26 13:26:45,828 INFO L343 CegarLoopForPetriNet]: 68 programPoint places, 76 predicate places. [2021-03-26 13:26:45,828 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:26:45,828 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 144 places, 110 transitions, 1053 flow [2021-03-26 13:26:45,828 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 144 places, 110 transitions, 1053 flow [2021-03-26 13:26:45,829 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 144 places, 110 transitions, 1053 flow [2021-03-26 13:26:45,974 INFO L129 PetriNetUnfolder]: 43/1788 cut-off events. [2021-03-26 13:26:45,974 INFO L130 PetriNetUnfolder]: For 3091/3237 co-relation queries the response was YES. [2021-03-26 13:26:45,983 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3790 conditions, 1788 events. 43/1788 cut-off events. For 3091/3237 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 22999 event pairs, 0 based on Foata normal form. 0/1570 useless extension candidates. Maximal degree in co-relation 3737. Up to 177 conditions per place. [2021-03-26 13:26:45,998 INFO L142 LiptonReduction]: Number of co-enabled transitions 1836 [2021-03-26 13:26:46,002 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:26:46,002 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:26:46,002 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 174 [2021-03-26 13:26:46,002 INFO L480 AbstractCegarLoop]: Abstraction has has 144 places, 110 transitions, 1053 flow [2021-03-26 13:26:46,003 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 155.92307692307693) internal successors, (2027), 13 states have internal predecessors, (2027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:26:46,003 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:26:46,003 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] [2021-03-26 13:26:46,003 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-03-26 13:26:46,003 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-26 13:26:46,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:26:46,005 INFO L82 PathProgramCache]: Analyzing trace with hash -1093254067, now seen corresponding path program 5 times [2021-03-26 13:26:46,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:26:46,006 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736539238] [2021-03-26 13:26:46,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:26:46,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:26:46,053 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:26:46,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:26:46,054 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:26:46,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 13:26:46,061 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:26:46,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:26:46,067 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-26 13:26:46,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:26:46,076 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-26 13:26:46,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 13:26:46,089 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-26 13:26:46,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:26:46,106 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-26 13:26:46,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-26 13:26:46,129 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-03-26 13:26:46,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-03-26 13:26:46,161 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-03-26 13:26:46,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-26 13:26:46,200 INFO L142 QuantifierPusher]: treesize reduction 72, result has 49.7 percent of original size [2021-03-26 13:26:46,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-03-26 13:26:46,241 INFO L142 QuantifierPusher]: treesize reduction 81, result has 49.4 percent of original size [2021-03-26 13:26:46,244 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-03-26 13:26:46,291 INFO L142 QuantifierPusher]: treesize reduction 90, result has 47.4 percent of original size [2021-03-26 13:26:46,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-03-26 13:26:46,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:26:46,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736539238] [2021-03-26 13:26:46,335 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:26:46,335 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-03-26 13:26:46,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813760306] [2021-03-26 13:26:46,335 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-03-26 13:26:46,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:26:46,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-03-26 13:26:46,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2021-03-26 13:26:46,337 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 179 [2021-03-26 13:26:46,338 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 110 transitions, 1053 flow. Second operand has 13 states, 13 states have (on average 155.92307692307693) internal successors, (2027), 13 states have internal predecessors, (2027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:26:46,338 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:26:46,338 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 179 [2021-03-26 13:26:46,338 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:26:54,915 INFO L129 PetriNetUnfolder]: 37876/65799 cut-off events. [2021-03-26 13:26:54,915 INFO L130 PetriNetUnfolder]: For 456959/459625 co-relation queries the response was YES. [2021-03-26 13:26:55,879 INFO L84 FinitePrefix]: Finished finitePrefix Result has 304098 conditions, 65799 events. 37876/65799 cut-off events. For 456959/459625 co-relation queries the response was YES. Maximal size of possible extension queue 5583. Compared 660692 event pairs, 7610 based on Foata normal form. 3/65200 useless extension candidates. Maximal degree in co-relation 304044. Up to 19698 conditions per place. [2021-03-26 13:26:56,211 INFO L132 encePairwiseOnDemand]: 167/179 looper letters, 149 selfloop transitions, 72 changer transitions 0/245 dead transitions. [2021-03-26 13:26:56,211 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 245 transitions, 2939 flow [2021-03-26 13:26:56,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-26 13:26:56,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-26 13:26:56,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2092 transitions. [2021-03-26 13:26:56,214 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8990116029222175 [2021-03-26 13:26:56,214 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2092 transitions. [2021-03-26 13:26:56,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2092 transitions. [2021-03-26 13:26:56,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:26:56,215 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2092 transitions. [2021-03-26 13:26:56,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 160.92307692307693) internal successors, (2092), 13 states have internal predecessors, (2092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:26:56,220 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 179.0) internal successors, (2506), 14 states have internal predecessors, (2506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:26:56,220 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 179.0) internal successors, (2506), 14 states have internal predecessors, (2506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:26:56,220 INFO L185 Difference]: Start difference. First operand has 144 places, 110 transitions, 1053 flow. Second operand 13 states and 2092 transitions. [2021-03-26 13:26:56,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 245 transitions, 2939 flow [2021-03-26 13:26:57,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 245 transitions, 2897 flow, removed 14 selfloop flow, removed 1 redundant places. [2021-03-26 13:26:57,948 INFO L241 Difference]: Finished difference. Result has 166 places, 156 transitions, 1919 flow [2021-03-26 13:26:57,948 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=1037, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1919, PETRI_PLACES=166, PETRI_TRANSITIONS=156} [2021-03-26 13:26:57,948 INFO L343 CegarLoopForPetriNet]: 68 programPoint places, 98 predicate places. [2021-03-26 13:26:57,949 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:26:57,949 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 166 places, 156 transitions, 1919 flow [2021-03-26 13:26:57,949 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 166 places, 156 transitions, 1919 flow [2021-03-26 13:26:57,950 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 166 places, 156 transitions, 1919 flow [2021-03-26 13:26:58,369 INFO L129 PetriNetUnfolder]: 83/3568 cut-off events. [2021-03-26 13:26:58,369 INFO L130 PetriNetUnfolder]: For 10629/11090 co-relation queries the response was YES. [2021-03-26 13:26:58,391 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8787 conditions, 3568 events. 83/3568 cut-off events. For 10629/11090 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 52750 event pairs, 0 based on Foata normal form. 7/3137 useless extension candidates. Maximal degree in co-relation 8723. Up to 332 conditions per place. [2021-03-26 13:26:58,431 INFO L142 LiptonReduction]: Number of co-enabled transitions 2710 [2021-03-26 13:26:58,438 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:26:58,438 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:26:58,438 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 489 [2021-03-26 13:26:58,438 INFO L480 AbstractCegarLoop]: Abstraction has has 166 places, 156 transitions, 1919 flow [2021-03-26 13:26:58,439 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 155.92307692307693) internal successors, (2027), 13 states have internal predecessors, (2027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:26:58,439 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:26:58,439 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] [2021-03-26 13:26:58,439 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-03-26 13:26:58,439 INFO L428 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-26 13:26:58,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:26:58,439 INFO L82 PathProgramCache]: Analyzing trace with hash -623198385, now seen corresponding path program 6 times [2021-03-26 13:26:58,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:26:58,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756466300] [2021-03-26 13:26:58,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:26:58,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:26:58,482 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:26:58,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:26:58,483 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:26:58,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 13:26:58,487 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:26:58,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:26:58,493 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:26:58,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 13:26:58,503 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-26 13:26:58,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-26 13:26:58,515 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-26 13:26:58,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-26 13:26:58,532 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-26 13:26:58,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-26 13:26:58,555 INFO L142 QuantifierPusher]: treesize reduction 36, result has 58.6 percent of original size [2021-03-26 13:26:58,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-03-26 13:26:58,584 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-03-26 13:26:58,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-26 13:26:58,632 INFO L142 QuantifierPusher]: treesize reduction 63, result has 52.3 percent of original size [2021-03-26 13:26:58,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-03-26 13:26:58,678 INFO L142 QuantifierPusher]: treesize reduction 72, result has 51.7 percent of original size [2021-03-26 13:26:58,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-03-26 13:26:58,731 INFO L142 QuantifierPusher]: treesize reduction 90, result has 47.4 percent of original size [2021-03-26 13:26:58,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-03-26 13:26:58,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:26:58,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756466300] [2021-03-26 13:26:58,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:26:58,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-03-26 13:26:58,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456020007] [2021-03-26 13:26:58,777 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-03-26 13:26:58,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:26:58,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-03-26 13:26:58,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2021-03-26 13:26:58,781 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 179 [2021-03-26 13:26:58,782 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 156 transitions, 1919 flow. Second operand has 13 states, 13 states have (on average 155.92307692307693) internal successors, (2027), 13 states have internal predecessors, (2027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:26:58,782 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:26:58,782 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 179 [2021-03-26 13:26:58,782 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:27:13,618 INFO L129 PetriNetUnfolder]: 50351/89961 cut-off events. [2021-03-26 13:27:13,618 INFO L130 PetriNetUnfolder]: For 966341/972192 co-relation queries the response was YES. [2021-03-26 13:27:15,576 INFO L84 FinitePrefix]: Finished finitePrefix Result has 489148 conditions, 89961 events. 50351/89961 cut-off events. For 966341/972192 co-relation queries the response was YES. Maximal size of possible extension queue 7702. Compared 971533 event pairs, 14297 based on Foata normal form. 3/89038 useless extension candidates. Maximal degree in co-relation 489083. Up to 27447 conditions per place. [2021-03-26 13:27:16,100 INFO L132 encePairwiseOnDemand]: 167/179 looper letters, 329 selfloop transitions, 70 changer transitions 0/423 dead transitions. [2021-03-26 13:27:16,100 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 423 transitions, 6237 flow [2021-03-26 13:27:16,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-26 13:27:16,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-26 13:27:16,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2092 transitions. [2021-03-26 13:27:16,104 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8990116029222175 [2021-03-26 13:27:16,104 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2092 transitions. [2021-03-26 13:27:16,104 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2092 transitions. [2021-03-26 13:27:16,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:27:16,105 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2092 transitions. [2021-03-26 13:27:16,107 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 160.92307692307693) internal successors, (2092), 13 states have internal predecessors, (2092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:27:16,109 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 179.0) internal successors, (2506), 14 states have internal predecessors, (2506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:27:16,109 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 179.0) internal successors, (2506), 14 states have internal predecessors, (2506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:27:16,109 INFO L185 Difference]: Start difference. First operand has 166 places, 156 transitions, 1919 flow. Second operand 13 states and 2092 transitions. [2021-03-26 13:27:16,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 423 transitions, 6237 flow [2021-03-26 13:27:20,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 423 transitions, 6089 flow, removed 61 selfloop flow, removed 1 redundant places. [2021-03-26 13:27:20,471 INFO L241 Difference]: Finished difference. Result has 188 places, 204 transitions, 2878 flow [2021-03-26 13:27:20,471 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=1867, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2878, PETRI_PLACES=188, PETRI_TRANSITIONS=204} [2021-03-26 13:27:20,472 INFO L343 CegarLoopForPetriNet]: 68 programPoint places, 120 predicate places. [2021-03-26 13:27:20,472 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:27:20,472 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 188 places, 204 transitions, 2878 flow [2021-03-26 13:27:20,472 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 188 places, 204 transitions, 2878 flow [2021-03-26 13:27:20,473 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 188 places, 204 transitions, 2878 flow [2021-03-26 13:27:21,423 INFO L129 PetriNetUnfolder]: 183/6959 cut-off events. [2021-03-26 13:27:21,424 INFO L130 PetriNetUnfolder]: For 28756/29704 co-relation queries the response was YES. [2021-03-26 13:27:21,458 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18622 conditions, 6959 events. 183/6959 cut-off events. For 28756/29704 co-relation queries the response was YES. Maximal size of possible extension queue 628. Compared 115098 event pairs, 0 based on Foata normal form. 19/6168 useless extension candidates. Maximal degree in co-relation 18547. Up to 628 conditions per place. [2021-03-26 13:27:21,517 INFO L142 LiptonReduction]: Number of co-enabled transitions 3504 [2021-03-26 13:27:21,525 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:27:21,526 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:27:21,526 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1054 [2021-03-26 13:27:21,526 INFO L480 AbstractCegarLoop]: Abstraction has has 188 places, 204 transitions, 2878 flow [2021-03-26 13:27:21,527 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 155.92307692307693) internal successors, (2027), 13 states have internal predecessors, (2027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:27:21,527 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:27:21,527 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] [2021-03-26 13:27:21,527 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-03-26 13:27:21,527 INFO L428 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-26 13:27:21,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:27:21,527 INFO L82 PathProgramCache]: Analyzing trace with hash -919380479, now seen corresponding path program 7 times [2021-03-26 13:27:21,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:27:21,527 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509543745] [2021-03-26 13:27:21,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:27:21,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:27:21,548 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:27:21,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:27:21,548 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:27:21,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 13:27:21,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:27:21,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:27:21,557 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:27:21,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 13:27:21,565 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-26 13:27:21,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-26 13:27:21,576 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-26 13:27:21,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-26 13:27:21,592 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-26 13:27:21,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-26 13:27:21,614 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-03-26 13:27:21,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-03-26 13:27:21,643 INFO L142 QuantifierPusher]: treesize reduction 45, result has 56.7 percent of original size [2021-03-26 13:27:21,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-03-26 13:27:21,677 INFO L142 QuantifierPusher]: treesize reduction 54, result has 57.5 percent of original size [2021-03-26 13:27:21,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-03-26 13:27:21,744 INFO L142 QuantifierPusher]: treesize reduction 72, result has 51.7 percent of original size [2021-03-26 13:27:21,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-03-26 13:27:21,787 INFO L142 QuantifierPusher]: treesize reduction 90, result has 47.4 percent of original size [2021-03-26 13:27:21,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-03-26 13:27:21,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:27:21,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509543745] [2021-03-26 13:27:21,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:27:21,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-03-26 13:27:21,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195496778] [2021-03-26 13:27:21,827 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-03-26 13:27:21,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:27:21,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-03-26 13:27:21,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2021-03-26 13:27:21,828 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 179 [2021-03-26 13:27:21,829 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 204 transitions, 2878 flow. Second operand has 13 states, 13 states have (on average 155.92307692307693) internal successors, (2027), 13 states have internal predecessors, (2027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:27:21,829 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:27:21,829 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 179 [2021-03-26 13:27:21,829 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:27:46,452 INFO L129 PetriNetUnfolder]: 68312/130292 cut-off events. [2021-03-26 13:27:46,452 INFO L130 PetriNetUnfolder]: For 1873559/1887996 co-relation queries the response was YES. [2021-03-26 13:27:49,790 INFO L84 FinitePrefix]: Finished finitePrefix Result has 772445 conditions, 130292 events. 68312/130292 cut-off events. For 1873559/1887996 co-relation queries the response was YES. Maximal size of possible extension queue 11235. Compared 1580555 event pairs, 21637 based on Foata normal form. 3/128635 useless extension candidates. Maximal degree in co-relation 772369. Up to 38205 conditions per place. [2021-03-26 13:27:50,728 INFO L132 encePairwiseOnDemand]: 167/179 looper letters, 429 selfloop transitions, 104 changer transitions 0/557 dead transitions. [2021-03-26 13:27:50,728 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 557 transitions, 9359 flow [2021-03-26 13:27:50,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-26 13:27:50,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-26 13:27:50,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2092 transitions. [2021-03-26 13:27:50,735 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8990116029222175 [2021-03-26 13:27:50,735 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2092 transitions. [2021-03-26 13:27:50,735 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2092 transitions. [2021-03-26 13:27:50,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:27:50,736 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2092 transitions. [2021-03-26 13:27:50,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 160.92307692307693) internal successors, (2092), 13 states have internal predecessors, (2092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:27:50,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 179.0) internal successors, (2506), 14 states have internal predecessors, (2506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:27:50,740 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 179.0) internal successors, (2506), 14 states have internal predecessors, (2506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:27:50,740 INFO L185 Difference]: Start difference. First operand has 188 places, 204 transitions, 2878 flow. Second operand 13 states and 2092 transitions. [2021-03-26 13:27:50,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 557 transitions, 9359 flow [2021-03-26 13:28:06,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 557 transitions, 9095 flow, removed 114 selfloop flow, removed 1 redundant places. [2021-03-26 13:28:06,789 INFO L241 Difference]: Finished difference. Result has 210 places, 294 transitions, 4785 flow [2021-03-26 13:28:06,790 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=2761, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4785, PETRI_PLACES=210, PETRI_TRANSITIONS=294} [2021-03-26 13:28:06,790 INFO L343 CegarLoopForPetriNet]: 68 programPoint places, 142 predicate places. [2021-03-26 13:28:06,790 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:28:06,790 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 210 places, 294 transitions, 4785 flow [2021-03-26 13:28:06,790 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 210 places, 294 transitions, 4785 flow [2021-03-26 13:28:06,792 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 210 places, 294 transitions, 4785 flow [2021-03-26 13:28:09,376 INFO L129 PetriNetUnfolder]: 388/13874 cut-off events. [2021-03-26 13:28:09,376 INFO L130 PetriNetUnfolder]: For 74049/76261 co-relation queries the response was YES. [2021-03-26 13:28:09,498 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39712 conditions, 13874 events. 388/13874 cut-off events. For 74049/76261 co-relation queries the response was YES. Maximal size of possible extension queue 1227. Compared 256115 event pairs, 0 based on Foata normal form. 38/12409 useless extension candidates. Maximal degree in co-relation 39626. Up to 1227 conditions per place. [2021-03-26 13:28:09,865 INFO L142 LiptonReduction]: Number of co-enabled transitions 4884 [2021-03-26 13:28:09,881 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:28:09,881 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:28:09,881 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 3091 [2021-03-26 13:28:09,882 INFO L480 AbstractCegarLoop]: Abstraction has has 210 places, 294 transitions, 4785 flow [2021-03-26 13:28:09,882 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 155.92307692307693) internal successors, (2027), 13 states have internal predecessors, (2027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:28:09,882 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:28:09,882 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] [2021-03-26 13:28:09,882 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-03-26 13:28:09,882 INFO L428 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-26 13:28:09,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:28:09,883 INFO L82 PathProgramCache]: Analyzing trace with hash 1417211775, now seen corresponding path program 8 times [2021-03-26 13:28:09,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:28:09,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714378688] [2021-03-26 13:28:09,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:28:09,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:28:09,916 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:28:09,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:28:09,917 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:28:09,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 13:28:09,920 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:28:09,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:28:09,926 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:28:09,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 13:28:09,934 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-26 13:28:09,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-26 13:28:09,945 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-26 13:28:09,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-26 13:28:09,961 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-26 13:28:09,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-26 13:28:09,984 INFO L142 QuantifierPusher]: treesize reduction 36, result has 58.6 percent of original size [2021-03-26 13:28:09,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-03-26 13:28:10,012 INFO L142 QuantifierPusher]: treesize reduction 45, result has 59.1 percent of original size [2021-03-26 13:28:10,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-03-26 13:28:10,067 INFO L142 QuantifierPusher]: treesize reduction 54, result has 57.5 percent of original size [2021-03-26 13:28:10,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-03-26 13:28:10,129 INFO L142 QuantifierPusher]: treesize reduction 72, result has 51.7 percent of original size [2021-03-26 13:28:10,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-03-26 13:28:10,172 INFO L142 QuantifierPusher]: treesize reduction 90, result has 47.4 percent of original size [2021-03-26 13:28:10,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-03-26 13:28:10,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:28:10,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714378688] [2021-03-26 13:28:10,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:28:10,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-03-26 13:28:10,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373648610] [2021-03-26 13:28:10,212 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-03-26 13:28:10,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:28:10,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-03-26 13:28:10,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2021-03-26 13:28:10,214 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 179 [2021-03-26 13:28:10,214 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 294 transitions, 4785 flow. Second operand has 13 states, 13 states have (on average 155.92307692307693) internal successors, (2027), 13 states have internal predecessors, (2027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:28:10,215 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:28:10,215 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 179 [2021-03-26 13:28:10,215 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:29:03,268 INFO L129 PetriNetUnfolder]: 91604/183877 cut-off events. [2021-03-26 13:29:03,268 INFO L130 PetriNetUnfolder]: For 3275357/3307428 co-relation queries the response was YES. [2021-03-26 13:29:07,928 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1163481 conditions, 183877 events. 91604/183877 cut-off events. For 3275357/3307428 co-relation queries the response was YES. Maximal size of possible extension queue 15955. Compared 2432499 event pairs, 29649 based on Foata normal form. 3/180845 useless extension candidates. Maximal degree in co-relation 1163394. Up to 54563 conditions per place. [2021-03-26 13:29:09,177 INFO L132 encePairwiseOnDemand]: 167/179 looper letters, 375 selfloop transitions, 182 changer transitions 0/581 dead transitions. [2021-03-26 13:29:09,177 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 581 transitions, 10542 flow [2021-03-26 13:29:09,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-26 13:29:09,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-26 13:29:09,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2092 transitions. [2021-03-26 13:29:09,179 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8990116029222175 [2021-03-26 13:29:09,179 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2092 transitions. [2021-03-26 13:29:09,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2092 transitions. [2021-03-26 13:29:09,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:29:09,179 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2092 transitions. [2021-03-26 13:29:09,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 160.92307692307693) internal successors, (2092), 13 states have internal predecessors, (2092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:29:09,182 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 179.0) internal successors, (2506), 14 states have internal predecessors, (2506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:29:09,183 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 179.0) internal successors, (2506), 14 states have internal predecessors, (2506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:29:09,183 INFO L185 Difference]: Start difference. First operand has 210 places, 294 transitions, 4785 flow. Second operand 13 states and 2092 transitions. [2021-03-26 13:29:09,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 581 transitions, 10542 flow [2021-03-26 13:29:52,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 581 transitions, 10325 flow, removed 94 selfloop flow, removed 1 redundant places. [2021-03-26 13:29:52,176 INFO L241 Difference]: Finished difference. Result has 232 places, 394 transitions, 7304 flow [2021-03-26 13:29:52,177 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=4655, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=7304, PETRI_PLACES=232, PETRI_TRANSITIONS=394} [2021-03-26 13:29:52,177 INFO L343 CegarLoopForPetriNet]: 68 programPoint places, 164 predicate places. [2021-03-26 13:29:52,177 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:29:52,177 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 232 places, 394 transitions, 7304 flow [2021-03-26 13:29:52,177 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 232 places, 394 transitions, 7304 flow [2021-03-26 13:29:52,180 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 232 places, 394 transitions, 7304 flow [2021-03-26 13:29:58,278 INFO L129 PetriNetUnfolder]: 628/20368 cut-off events. [2021-03-26 13:29:58,279 INFO L130 PetriNetUnfolder]: For 146516/150186 co-relation queries the response was YES. [2021-03-26 13:29:58,495 INFO L84 FinitePrefix]: Finished finitePrefix Result has 63892 conditions, 20368 events. 628/20368 cut-off events. For 146516/150186 co-relation queries the response was YES. Maximal size of possible extension queue 1789. Compared 397069 event pairs, 0 based on Foata normal form. 37/18416 useless extension candidates. Maximal degree in co-relation 63795. Up to 1789 conditions per place. [2021-03-26 13:29:58,743 INFO L142 LiptonReduction]: Number of co-enabled transitions 6440 [2021-03-26 13:29:58,776 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:29:58,776 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:29:58,776 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 6599 [2021-03-26 13:29:58,776 INFO L480 AbstractCegarLoop]: Abstraction has has 232 places, 394 transitions, 7304 flow [2021-03-26 13:29:58,777 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 155.92307692307693) internal successors, (2027), 13 states have internal predecessors, (2027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:29:58,777 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:29:58,777 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] [2021-03-26 13:29:58,777 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-03-26 13:29:58,777 INFO L428 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-26 13:29:58,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:29:58,777 INFO L82 PathProgramCache]: Analyzing trace with hash 446775507, now seen corresponding path program 9 times [2021-03-26 13:29:58,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:29:58,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978725721] [2021-03-26 13:29:58,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:29:58,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:29:58,799 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:29:58,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:29:58,800 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:29:58,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 13:29:58,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:29:58,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:29:58,809 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:29:58,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 13:29:58,980 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2021-03-26 13:29:58,981 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-26 13:29:58,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-26 13:29:58,994 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-26 13:29:58,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:29:59,012 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-26 13:29:59,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-26 13:29:59,034 INFO L142 QuantifierPusher]: treesize reduction 36, result has 61.3 percent of original size [2021-03-26 13:29:59,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-03-26 13:29:59,078 INFO L142 QuantifierPusher]: treesize reduction 45, result has 59.1 percent of original size [2021-03-26 13:29:59,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-03-26 13:29:59,126 INFO L142 QuantifierPusher]: treesize reduction 54, result has 57.5 percent of original size [2021-03-26 13:29:59,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-03-26 13:29:59,182 INFO L142 QuantifierPusher]: treesize reduction 72, result has 51.7 percent of original size [2021-03-26 13:29:59,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-03-26 13:29:59,225 INFO L142 QuantifierPusher]: treesize reduction 90, result has 47.4 percent of original size [2021-03-26 13:29:59,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-03-26 13:29:59,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:29:59,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978725721] [2021-03-26 13:29:59,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:29:59,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-03-26 13:29:59,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065527487] [2021-03-26 13:29:59,266 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-03-26 13:29:59,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:29:59,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-03-26 13:29:59,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2021-03-26 13:29:59,267 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 179 [2021-03-26 13:29:59,268 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 394 transitions, 7304 flow. Second operand has 13 states, 13 states have (on average 155.92307692307693) internal successors, (2027), 13 states have internal predecessors, (2027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:29:59,268 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:29:59,268 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 179 [2021-03-26 13:29:59,268 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:31:44,991 INFO L129 PetriNetUnfolder]: 124454/274527 cut-off events. [2021-03-26 13:31:44,991 INFO L130 PetriNetUnfolder]: For 5795504/5879024 co-relation queries the response was YES. [2021-03-26 13:31:51,939 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1797188 conditions, 274527 events. 124454/274527 cut-off events. For 5795504/5879024 co-relation queries the response was YES. Maximal size of possible extension queue 24369. Compared 4130197 event pairs, 42960 based on Foata normal form. 5/268347 useless extension candidates. Maximal degree in co-relation 1797090. Up to 76851 conditions per place. [2021-03-26 13:31:53,639 INFO L132 encePairwiseOnDemand]: 167/179 looper letters, 578 selfloop transitions, 232 changer transitions 0/834 dead transitions. [2021-03-26 13:31:53,639 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 834 transitions, 17602 flow [2021-03-26 13:31:53,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-26 13:31:53,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-26 13:31:53,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2092 transitions. [2021-03-26 13:31:53,642 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8990116029222175 [2021-03-26 13:31:53,642 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2092 transitions. [2021-03-26 13:31:53,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2092 transitions. [2021-03-26 13:31:53,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:31:53,643 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2092 transitions. [2021-03-26 13:31:53,645 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 160.92307692307693) internal successors, (2092), 13 states have internal predecessors, (2092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:31:53,647 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 179.0) internal successors, (2506), 14 states have internal predecessors, (2506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:31:53,647 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 179.0) internal successors, (2506), 14 states have internal predecessors, (2506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:31:53,647 INFO L185 Difference]: Start difference. First operand has 232 places, 394 transitions, 7304 flow. Second operand 13 states and 2092 transitions. [2021-03-26 13:31:53,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 834 transitions, 17602 flow [2021-03-26 13:34:14,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 834 transitions, 17243 flow, removed 141 selfloop flow, removed 1 redundant places. [2021-03-26 13:34:14,175 INFO L241 Difference]: Finished difference. Result has 254 places, 583 transitions, 12376 flow [2021-03-26 13:34:14,176 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=7083, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=12376, PETRI_PLACES=254, PETRI_TRANSITIONS=583} [2021-03-26 13:34:14,176 INFO L343 CegarLoopForPetriNet]: 68 programPoint places, 186 predicate places. [2021-03-26 13:34:14,176 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:34:14,176 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 254 places, 583 transitions, 12376 flow [2021-03-26 13:34:14,176 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 254 places, 583 transitions, 12376 flow [2021-03-26 13:34:14,180 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 254 places, 583 transitions, 12376 flow [2021-03-26 13:34:28,227 INFO L129 PetriNetUnfolder]: 1262/35510 cut-off events. [2021-03-26 13:34:28,228 INFO L130 PetriNetUnfolder]: For 337279/346306 co-relation queries the response was YES. [2021-03-26 13:34:28,767 INFO L84 FinitePrefix]: Finished finitePrefix Result has 121498 conditions, 35510 events. 1262/35510 cut-off events. For 337279/346306 co-relation queries the response was YES. Maximal size of possible extension queue 3003. Compared 742483 event pairs, 0 based on Foata normal form. 436/32995 useless extension candidates. Maximal degree in co-relation 121390. Up to 3003 conditions per place. [2021-03-26 13:34:29,420 INFO L142 LiptonReduction]: Number of co-enabled transitions 8852 [2021-03-26 13:34:29,467 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:34:29,467 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:34:29,467 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 15291 [2021-03-26 13:34:29,467 INFO L480 AbstractCegarLoop]: Abstraction has has 254 places, 583 transitions, 12376 flow [2021-03-26 13:34:29,468 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 155.92307692307693) internal successors, (2027), 13 states have internal predecessors, (2027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:34:29,468 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:34:29,468 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] [2021-03-26 13:34:29,468 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-03-26 13:34:29,468 INFO L428 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-26 13:34:29,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:34:29,468 INFO L82 PathProgramCache]: Analyzing trace with hash 1713653053, now seen corresponding path program 10 times [2021-03-26 13:34:29,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:34:29,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251451846] [2021-03-26 13:34:29,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:34:29,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:34:29,488 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:34:29,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:34:29,489 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:34:29,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 13:34:29,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:34:29,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:34:29,498 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:34:29,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 13:34:29,507 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-26 13:34:29,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 13:34:29,519 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-26 13:34:29,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-26 13:34:29,535 INFO L142 QuantifierPusher]: treesize reduction 27, result has 64.5 percent of original size [2021-03-26 13:34:29,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-26 13:34:29,570 INFO L142 QuantifierPusher]: treesize reduction 36, result has 61.3 percent of original size [2021-03-26 13:34:29,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-03-26 13:34:29,620 INFO L142 QuantifierPusher]: treesize reduction 45, result has 59.1 percent of original size [2021-03-26 13:34:29,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-03-26 13:34:29,669 INFO L142 QuantifierPusher]: treesize reduction 54, result has 57.5 percent of original size [2021-03-26 13:34:29,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-03-26 13:34:29,724 INFO L142 QuantifierPusher]: treesize reduction 72, result has 51.7 percent of original size [2021-03-26 13:34:29,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-03-26 13:34:29,768 INFO L142 QuantifierPusher]: treesize reduction 90, result has 47.4 percent of original size [2021-03-26 13:34:29,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-03-26 13:34:29,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:34:29,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251451846] [2021-03-26 13:34:29,808 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:34:29,808 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-03-26 13:34:29,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381342524] [2021-03-26 13:34:29,808 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-03-26 13:34:29,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:34:29,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-03-26 13:34:29,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2021-03-26 13:34:29,809 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 179 [2021-03-26 13:34:29,810 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 583 transitions, 12376 flow. Second operand has 13 states, 13 states have (on average 155.92307692307693) internal successors, (2027), 13 states have internal predecessors, (2027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:34:29,810 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:34:29,810 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 179 [2021-03-26 13:34:29,810 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand