/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-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-6.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 00:18:39,949 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 00:18:39,952 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 00:18:39,989 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 00:18:39,989 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 00:18:39,992 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 00:18:39,994 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 00:18:40,000 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 00:18:40,002 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 00:18:40,005 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 00:18:40,006 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 00:18:40,007 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 00:18:40,008 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 00:18:40,009 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 00:18:40,011 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 00:18:40,014 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 00:18:40,017 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 00:18:40,018 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 00:18:40,021 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 00:18:40,027 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 00:18:40,028 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 00:18:40,029 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 00:18:40,030 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 00:18:40,032 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 00:18:40,037 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-25 00:18:40,038 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-25 00:18:40,038 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-25 00:18:40,039 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-25 00:18:40,039 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-25 00:18:40,040 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-25 00:18:40,040 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-25 00:18:40,040 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-25 00:18:40,041 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-25 00:18:40,042 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-25 00:18:40,042 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-25 00:18:40,042 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-25 00:18:40,043 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-25 00:18:40,043 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-25 00:18:40,043 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 00:18:40,044 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 00:18:40,045 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 00:18:40,047 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-SemanticLbe.epf [2021-03-25 00:18:40,081 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 00:18:40,082 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 00:18:40,085 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 00:18:40,085 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 00:18:40,085 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 00:18:40,085 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 00:18:40,085 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 00:18:40,085 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 00:18:40,085 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 00:18:40,086 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 00:18:40,086 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 00:18:40,087 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 00:18:40,087 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 00:18:40,087 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 00:18:40,087 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 00:18:40,087 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 00:18:40,087 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 00:18:40,087 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 00:18:40,087 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 00:18:40,088 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 00:18:40,088 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 00:18:40,088 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 00:18:40,088 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 00:18:40,088 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 00:18:40,088 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 00:18:40,089 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 00:18:40,089 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 00:18:40,089 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 00:18:40,089 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 00:18:40,390 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 00:18:40,413 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 00:18:40,415 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 00:18:40,416 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-25 00:18:40,417 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-25 00:18:40,418 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-6.wvr.bpl [2021-03-25 00:18:40,420 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-6.wvr.bpl' [2021-03-25 00:18:40,449 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 00:18:40,450 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-25 00:18:40,451 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 00:18:40,451 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 00:18:40,451 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 00:18:40,461 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:18:40" (1/1) ... [2021-03-25 00:18:40,466 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:18:40" (1/1) ... [2021-03-25 00:18:40,471 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 00:18:40,472 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 00:18:40,472 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 00:18:40,472 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 00:18:40,478 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:18:40" (1/1) ... [2021-03-25 00:18:40,479 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:18:40" (1/1) ... [2021-03-25 00:18:40,487 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:18:40" (1/1) ... [2021-03-25 00:18:40,487 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:18:40" (1/1) ... [2021-03-25 00:18:40,493 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:18:40" (1/1) ... [2021-03-25 00:18:40,494 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:18:40" (1/1) ... [2021-03-25 00:18:40,494 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:18:40" (1/1) ... [2021-03-25 00:18:40,496 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 00:18:40,496 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 00:18:40,496 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 00:18:40,496 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 00:18:40,499 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:18:40" (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 [2021-03-25 00:18:40,566 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-03-25 00:18:40,566 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-25 00:18:40,566 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-25 00:18:40,568 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-03-25 00:18:40,568 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-25 00:18:40,568 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-25 00:18:40,569 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-25 00:18:40,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 00:18:40,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 00:18:40,569 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-03-25 00:18:40,569 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-03-25 00:18:40,569 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-03-25 00:18:40,569 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-03-25 00:18:40,569 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-03-25 00:18:40,570 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-03-25 00:18:40,570 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2021-03-25 00:18:40,570 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2021-03-25 00:18:40,570 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2021-03-25 00:18:40,570 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread6 given in one single declaration [2021-03-25 00:18:40,570 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2021-03-25 00:18:40,570 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2021-03-25 00:18:40,571 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-25 00:18:40,754 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 00:18:40,754 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-25 00:18:40,755 INFO L202 PluginConnector]: Adding new model ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 12:18:40 BoogieIcfgContainer [2021-03-25 00:18:40,755 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 00:18:40,757 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 00:18:40,757 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 00:18:40,759 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 00:18:40,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:18:40" (1/2) ... [2021-03-25 00:18:40,760 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77813bff and model type ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 12:18:40, skipping insertion in model container [2021-03-25 00:18:40,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 12:18:40" (2/2) ... [2021-03-25 00:18:40,761 INFO L111 eAbstractionObserver]: Analyzing ICFG ticket-6.wvr.bpl [2021-03-25 00:18:40,765 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 00:18:40,768 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 00:18:40,769 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 00:18:40,868 INFO L149 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2021-03-25 00:18:40,882 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-03-25 00:18:40,899 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 00:18:40,899 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 00:18:40,900 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 00:18:40,900 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 00:18:40,900 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 00:18:40,900 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 00:18:40,900 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 00:18:40,900 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 00:18:40,909 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 73 places, 54 transitions, 156 flow [2021-03-25 00:18:40,943 INFO L129 PetriNetUnfolder]: 0/48 cut-off events. [2021-03-25 00:18:40,951 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-03-25 00:18:40,952 INFO L84 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 48 events. 0/48 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 119 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-25 00:18:40,952 INFO L82 GeneralOperation]: Start removeDead. Operand has 73 places, 54 transitions, 156 flow [2021-03-25 00:18:40,959 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 46 transitions, 128 flow [2021-03-25 00:18:40,960 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 00:18:40,971 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 65 places, 46 transitions, 128 flow [2021-03-25 00:18:40,974 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 65 places, 46 transitions, 128 flow [2021-03-25 00:18:40,975 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 65 places, 46 transitions, 128 flow [2021-03-25 00:18:40,991 INFO L129 PetriNetUnfolder]: 0/46 cut-off events. [2021-03-25 00:18:40,991 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-03-25 00:18:40,991 INFO L84 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 46 events. 0/46 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 119 event pairs, 0 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-25 00:18:40,994 INFO L142 LiptonReduction]: Number of co-enabled transitions 1110 [2021-03-25 00:18:42,272 INFO L154 LiptonReduction]: Checked pairs total: 1234 [2021-03-25 00:18:42,272 INFO L156 LiptonReduction]: Total number of compositions: 18 [2021-03-25 00:18:42,275 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1316 [2021-03-25 00:18:42,304 INFO L129 PetriNetUnfolder]: 0/27 cut-off events. [2021-03-25 00:18:42,304 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-03-25 00:18:42,305 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:18:42,305 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] [2021-03-25 00:18:42,305 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 00:18:42,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:18:42,315 INFO L82 PathProgramCache]: Analyzing trace with hash 1836734761, now seen corresponding path program 1 times [2021-03-25 00:18:42,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:18:42,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955246606] [2021-03-25 00:18:42,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:18:42,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:18:42,520 INFO L142 QuantifierPusher]: treesize reduction 11, result has 52.2 percent of original size [2021-03-25 00:18:42,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 00:18:42,540 INFO L142 QuantifierPusher]: treesize reduction 4, result has 60.0 percent of original size [2021-03-25 00:18:42,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-03-25 00:18:42,546 INFO L142 QuantifierPusher]: treesize reduction 4, result has 60.0 percent of original size [2021-03-25 00:18:42,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-03-25 00:18:42,547 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:42,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-03-25 00:18:42,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:42,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:18:42,560 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:42,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:18:42,563 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:42,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:18:42,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:42,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-03-25 00:18:42,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:18:42,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955246606] [2021-03-25 00:18:42,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:18:42,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 00:18:42,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005264592] [2021-03-25 00:18:42,576 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 00:18:42,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:18:42,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 00:18:42,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-03-25 00:18:42,591 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 72 [2021-03-25 00:18:42,595 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 28 transitions, 92 flow. Second operand has 6 states, 6 states have (on average 44.5) internal successors, (267), 6 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:42,595 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:18:42,595 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 72 [2021-03-25 00:18:42,596 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:18:43,200 INFO L129 PetriNetUnfolder]: 4087/5854 cut-off events. [2021-03-25 00:18:43,200 INFO L130 PetriNetUnfolder]: For 364/364 co-relation queries the response was YES. [2021-03-25 00:18:43,214 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11720 conditions, 5854 events. 4087/5854 cut-off events. For 364/364 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 34124 event pairs, 1830 based on Foata normal form. 1/5807 useless extension candidates. Maximal degree in co-relation 11686. Up to 2916 conditions per place. [2021-03-25 00:18:43,243 INFO L132 encePairwiseOnDemand]: 57/72 looper letters, 28 selfloop transitions, 13 changer transitions 1/55 dead transitions. [2021-03-25 00:18:43,243 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 55 transitions, 230 flow [2021-03-25 00:18:43,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 00:18:43,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 00:18:43,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 253 transitions. [2021-03-25 00:18:43,254 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7027777777777777 [2021-03-25 00:18:43,254 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 253 transitions. [2021-03-25 00:18:43,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 253 transitions. [2021-03-25 00:18:43,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:18:43,257 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 253 transitions. [2021-03-25 00:18:43,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 50.6) internal successors, (253), 5 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:43,264 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 72.0) internal successors, (432), 6 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:43,265 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 72.0) internal successors, (432), 6 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:43,266 INFO L185 Difference]: Start difference. First operand has 47 places, 28 transitions, 92 flow. Second operand 5 states and 253 transitions. [2021-03-25 00:18:43,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 55 transitions, 230 flow [2021-03-25 00:18:43,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 55 transitions, 206 flow, removed 0 selfloop flow, removed 12 redundant places. [2021-03-25 00:18:43,303 INFO L241 Difference]: Finished difference. Result has 42 places, 39 transitions, 162 flow [2021-03-25 00:18:43,305 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=162, PETRI_PLACES=42, PETRI_TRANSITIONS=39} [2021-03-25 00:18:43,305 INFO L343 CegarLoopForPetriNet]: 47 programPoint places, -5 predicate places. [2021-03-25 00:18:43,305 INFO L480 AbstractCegarLoop]: Abstraction has has 42 places, 39 transitions, 162 flow [2021-03-25 00:18:43,306 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 44.5) internal successors, (267), 6 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:43,306 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:18:43,306 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] [2021-03-25 00:18:43,306 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 00:18:43,306 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 00:18:43,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:18:43,307 INFO L82 PathProgramCache]: Analyzing trace with hash -2126193579, now seen corresponding path program 2 times [2021-03-25 00:18:43,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:18:43,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425506014] [2021-03-25 00:18:43,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:18:43,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:18:43,338 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:43,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:18:43,342 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:43,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:43,345 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:43,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:43,398 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:43,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:43,403 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:43,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:18:43,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:18:43,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425506014] [2021-03-25 00:18:43,404 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:18:43,404 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 00:18:43,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621617510] [2021-03-25 00:18:43,406 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 00:18:43,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:18:43,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 00:18:43,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-03-25 00:18:43,407 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 72 [2021-03-25 00:18:43,408 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 39 transitions, 162 flow. Second operand has 6 states, 6 states have (on average 37.5) internal successors, (225), 6 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:43,408 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:18:43,408 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 72 [2021-03-25 00:18:43,408 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:18:44,870 INFO L129 PetriNetUnfolder]: 11551/16003 cut-off events. [2021-03-25 00:18:44,870 INFO L130 PetriNetUnfolder]: For 9175/9728 co-relation queries the response was YES. [2021-03-25 00:18:44,900 INFO L84 FinitePrefix]: Finished finitePrefix Result has 48674 conditions, 16003 events. 11551/16003 cut-off events. For 9175/9728 co-relation queries the response was YES. Maximal size of possible extension queue 946. Compared 92940 event pairs, 2643 based on Foata normal form. 355/16324 useless extension candidates. Maximal degree in co-relation 48320. Up to 7275 conditions per place. [2021-03-25 00:18:44,988 INFO L132 encePairwiseOnDemand]: 59/72 looper letters, 35 selfloop transitions, 45 changer transitions 0/93 dead transitions. [2021-03-25 00:18:44,988 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 93 transitions, 552 flow [2021-03-25 00:18:44,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 00:18:44,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 00:18:44,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 272 transitions. [2021-03-25 00:18:44,993 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6296296296296297 [2021-03-25 00:18:44,993 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 272 transitions. [2021-03-25 00:18:44,993 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 272 transitions. [2021-03-25 00:18:44,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:18:44,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 272 transitions. [2021-03-25 00:18:44,995 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 45.333333333333336) internal successors, (272), 6 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:44,998 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 72.0) internal successors, (504), 7 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:44,998 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 72.0) internal successors, (504), 7 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:44,998 INFO L185 Difference]: Start difference. First operand has 42 places, 39 transitions, 162 flow. Second operand 6 states and 272 transitions. [2021-03-25 00:18:44,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 93 transitions, 552 flow [2021-03-25 00:18:45,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 93 transitions, 510 flow, removed 1 selfloop flow, removed 3 redundant places. [2021-03-25 00:18:45,007 INFO L241 Difference]: Finished difference. Result has 45 places, 77 transitions, 459 flow [2021-03-25 00:18:45,007 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=459, PETRI_PLACES=45, PETRI_TRANSITIONS=77} [2021-03-25 00:18:45,009 INFO L343 CegarLoopForPetriNet]: 47 programPoint places, -2 predicate places. [2021-03-25 00:18:45,009 INFO L480 AbstractCegarLoop]: Abstraction has has 45 places, 77 transitions, 459 flow [2021-03-25 00:18:45,009 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 37.5) internal successors, (225), 6 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:45,010 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:18:45,010 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] [2021-03-25 00:18:45,010 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 00:18:45,010 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 00:18:45,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:18:45,011 INFO L82 PathProgramCache]: Analyzing trace with hash 583728617, now seen corresponding path program 3 times [2021-03-25 00:18:45,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:18:45,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811783638] [2021-03-25 00:18:45,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:18:45,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:18:45,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:45,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:18:45,071 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:45,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:45,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:45,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:45,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:45,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:18:45,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:18:45,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811783638] [2021-03-25 00:18:45,081 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:18:45,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 00:18:45,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54799362] [2021-03-25 00:18:45,082 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 00:18:45,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:18:45,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 00:18:45,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-25 00:18:45,083 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 72 [2021-03-25 00:18:45,084 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 77 transitions, 459 flow. Second operand has 5 states, 5 states have (on average 38.0) internal successors, (190), 5 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:45,084 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:18:45,084 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 72 [2021-03-25 00:18:45,084 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:18:46,538 INFO L129 PetriNetUnfolder]: 11904/16356 cut-off events. [2021-03-25 00:18:46,538 INFO L130 PetriNetUnfolder]: For 22764/24661 co-relation queries the response was YES. [2021-03-25 00:18:46,579 INFO L84 FinitePrefix]: Finished finitePrefix Result has 65991 conditions, 16356 events. 11904/16356 cut-off events. For 22764/24661 co-relation queries the response was YES. Maximal size of possible extension queue 974. Compared 91717 event pairs, 2829 based on Foata normal form. 127/16444 useless extension candidates. Maximal degree in co-relation 65743. Up to 15196 conditions per place. [2021-03-25 00:18:46,656 INFO L132 encePairwiseOnDemand]: 60/72 looper letters, 76 selfloop transitions, 46 changer transitions 0/135 dead transitions. [2021-03-25 00:18:46,657 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 135 transitions, 1082 flow [2021-03-25 00:18:46,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 00:18:46,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 00:18:46,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 221 transitions. [2021-03-25 00:18:46,658 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6138888888888889 [2021-03-25 00:18:46,658 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 221 transitions. [2021-03-25 00:18:46,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 221 transitions. [2021-03-25 00:18:46,659 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:18:46,659 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 221 transitions. [2021-03-25 00:18:46,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 44.2) internal successors, (221), 5 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:46,660 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 72.0) internal successors, (432), 6 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:46,660 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 72.0) internal successors, (432), 6 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:46,660 INFO L185 Difference]: Start difference. First operand has 45 places, 77 transitions, 459 flow. Second operand 5 states and 221 transitions. [2021-03-25 00:18:46,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 135 transitions, 1082 flow [2021-03-25 00:18:46,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 135 transitions, 1051 flow, removed 12 selfloop flow, removed 1 redundant places. [2021-03-25 00:18:46,674 INFO L241 Difference]: Finished difference. Result has 50 places, 116 transitions, 907 flow [2021-03-25 00:18:46,675 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=440, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=907, PETRI_PLACES=50, PETRI_TRANSITIONS=116} [2021-03-25 00:18:46,675 INFO L343 CegarLoopForPetriNet]: 47 programPoint places, 3 predicate places. [2021-03-25 00:18:46,675 INFO L480 AbstractCegarLoop]: Abstraction has has 50 places, 116 transitions, 907 flow [2021-03-25 00:18:46,675 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 38.0) internal successors, (190), 5 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:46,675 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:18:46,675 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] [2021-03-25 00:18:46,675 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 00:18:46,676 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 00:18:46,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:18:46,676 INFO L82 PathProgramCache]: Analyzing trace with hash 1058410159, now seen corresponding path program 4 times [2021-03-25 00:18:46,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:18:46,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950327676] [2021-03-25 00:18:46,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:18:46,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:18:46,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:46,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:18:46,703 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:46,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:46,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:46,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:46,712 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:46,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:46,718 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:46,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:46,719 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:46,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:46,719 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:46,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:46,726 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:46,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:46,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:46,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:18:46,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:18:46,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950327676] [2021-03-25 00:18:46,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:18:46,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-25 00:18:46,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401443493] [2021-03-25 00:18:46,735 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-25 00:18:46,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:18:46,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-25 00:18:46,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-03-25 00:18:46,736 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 72 [2021-03-25 00:18:46,737 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 116 transitions, 907 flow. Second operand has 8 states, 8 states have (on average 36.875) internal successors, (295), 8 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:46,737 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:18:46,737 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 72 [2021-03-25 00:18:46,737 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:18:48,667 INFO L129 PetriNetUnfolder]: 15303/21543 cut-off events. [2021-03-25 00:18:48,668 INFO L130 PetriNetUnfolder]: For 41290/42543 co-relation queries the response was YES. [2021-03-25 00:18:48,732 INFO L84 FinitePrefix]: Finished finitePrefix Result has 90154 conditions, 21543 events. 15303/21543 cut-off events. For 41290/42543 co-relation queries the response was YES. Maximal size of possible extension queue 1351. Compared 132645 event pairs, 2279 based on Foata normal form. 91/21597 useless extension candidates. Maximal degree in co-relation 89611. Up to 10154 conditions per place. [2021-03-25 00:18:48,955 INFO L132 encePairwiseOnDemand]: 58/72 looper letters, 39 selfloop transitions, 292 changer transitions 0/344 dead transitions. [2021-03-25 00:18:48,955 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 344 transitions, 3379 flow [2021-03-25 00:18:48,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-25 00:18:48,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-25 00:18:48,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 369 transitions. [2021-03-25 00:18:48,957 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.640625 [2021-03-25 00:18:48,957 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 369 transitions. [2021-03-25 00:18:48,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 369 transitions. [2021-03-25 00:18:48,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:18:48,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 369 transitions. [2021-03-25 00:18:48,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 46.125) internal successors, (369), 8 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:48,960 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 72.0) internal successors, (648), 9 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:48,961 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 72.0) internal successors, (648), 9 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:48,961 INFO L185 Difference]: Start difference. First operand has 50 places, 116 transitions, 907 flow. Second operand 8 states and 369 transitions. [2021-03-25 00:18:48,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 344 transitions, 3379 flow [2021-03-25 00:18:48,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 344 transitions, 3372 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 00:18:48,993 INFO L241 Difference]: Finished difference. Result has 60 places, 327 transitions, 3748 flow [2021-03-25 00:18:48,994 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=900, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3748, PETRI_PLACES=60, PETRI_TRANSITIONS=327} [2021-03-25 00:18:48,994 INFO L343 CegarLoopForPetriNet]: 47 programPoint places, 13 predicate places. [2021-03-25 00:18:48,994 INFO L480 AbstractCegarLoop]: Abstraction has has 60 places, 327 transitions, 3748 flow [2021-03-25 00:18:48,994 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 36.875) internal successors, (295), 8 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:48,994 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:18:48,994 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] [2021-03-25 00:18:48,995 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-25 00:18:48,995 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 00:18:48,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:18:48,995 INFO L82 PathProgramCache]: Analyzing trace with hash 1122366261, now seen corresponding path program 5 times [2021-03-25 00:18:48,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:18:48,999 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239224691] [2021-03-25 00:18:48,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:18:49,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:18:49,048 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:49,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:18:49,052 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:49,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:49,056 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:49,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:49,061 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:49,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:18:49,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:18:49,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239224691] [2021-03-25 00:18:49,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:18:49,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 00:18:49,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799059637] [2021-03-25 00:18:49,063 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 00:18:49,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:18:49,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 00:18:49,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-25 00:18:49,064 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 72 [2021-03-25 00:18:49,064 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 327 transitions, 3748 flow. Second operand has 5 states, 5 states have (on average 38.0) internal successors, (190), 5 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:49,064 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:18:49,064 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 72 [2021-03-25 00:18:49,064 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:18:51,085 INFO L129 PetriNetUnfolder]: 15497/21964 cut-off events. [2021-03-25 00:18:51,085 INFO L130 PetriNetUnfolder]: For 89347/93645 co-relation queries the response was YES. [2021-03-25 00:18:51,123 INFO L84 FinitePrefix]: Finished finitePrefix Result has 126677 conditions, 21964 events. 15497/21964 cut-off events. For 89347/93645 co-relation queries the response was YES. Maximal size of possible extension queue 1350. Compared 136586 event pairs, 3652 based on Foata normal form. 192/22119 useless extension candidates. Maximal degree in co-relation 125981. Up to 20114 conditions per place. [2021-03-25 00:18:51,231 INFO L132 encePairwiseOnDemand]: 60/72 looper letters, 238 selfloop transitions, 154 changer transitions 0/405 dead transitions. [2021-03-25 00:18:51,231 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 405 transitions, 5437 flow [2021-03-25 00:18:51,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 00:18:51,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 00:18:51,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 221 transitions. [2021-03-25 00:18:51,235 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6138888888888889 [2021-03-25 00:18:51,236 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 221 transitions. [2021-03-25 00:18:51,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 221 transitions. [2021-03-25 00:18:51,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:18:51,236 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 221 transitions. [2021-03-25 00:18:51,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 44.2) internal successors, (221), 5 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:51,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 72.0) internal successors, (432), 6 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:51,238 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 72.0) internal successors, (432), 6 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:51,238 INFO L185 Difference]: Start difference. First operand has 60 places, 327 transitions, 3748 flow. Second operand 5 states and 221 transitions. [2021-03-25 00:18:51,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 405 transitions, 5437 flow [2021-03-25 00:18:51,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 405 transitions, 5320 flow, removed 55 selfloop flow, removed 1 redundant places. [2021-03-25 00:18:51,474 INFO L241 Difference]: Finished difference. Result has 64 places, 370 transitions, 4632 flow [2021-03-25 00:18:51,475 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=3671, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4632, PETRI_PLACES=64, PETRI_TRANSITIONS=370} [2021-03-25 00:18:51,475 INFO L343 CegarLoopForPetriNet]: 47 programPoint places, 17 predicate places. [2021-03-25 00:18:51,476 INFO L480 AbstractCegarLoop]: Abstraction has has 64 places, 370 transitions, 4632 flow [2021-03-25 00:18:51,476 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 38.0) internal successors, (190), 5 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:51,476 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:18:51,476 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] [2021-03-25 00:18:51,476 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-25 00:18:51,476 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 00:18:51,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:18:51,477 INFO L82 PathProgramCache]: Analyzing trace with hash -316332753, now seen corresponding path program 6 times [2021-03-25 00:18:51,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:18:51,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910258588] [2021-03-25 00:18:51,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:18:51,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:18:51,500 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:51,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:18:51,505 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:51,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:51,509 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:51,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:51,513 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:51,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:51,519 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:51,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:18:51,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:18:51,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910258588] [2021-03-25 00:18:51,520 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:18:51,520 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 00:18:51,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085790790] [2021-03-25 00:18:51,521 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 00:18:51,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:18:51,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 00:18:51,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-03-25 00:18:51,522 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 72 [2021-03-25 00:18:51,522 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 370 transitions, 4632 flow. Second operand has 6 states, 6 states have (on average 37.5) internal successors, (225), 6 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:51,522 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:18:51,522 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 72 [2021-03-25 00:18:51,522 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:18:53,677 INFO L129 PetriNetUnfolder]: 16661/23691 cut-off events. [2021-03-25 00:18:53,677 INFO L130 PetriNetUnfolder]: For 99331/103686 co-relation queries the response was YES. [2021-03-25 00:18:53,726 INFO L84 FinitePrefix]: Finished finitePrefix Result has 132633 conditions, 23691 events. 16661/23691 cut-off events. For 99331/103686 co-relation queries the response was YES. Maximal size of possible extension queue 1472. Compared 150742 event pairs, 2768 based on Foata normal form. 646/24296 useless extension candidates. Maximal degree in co-relation 131914. Up to 11585 conditions per place. [2021-03-25 00:18:53,816 INFO L132 encePairwiseOnDemand]: 59/72 looper letters, 122 selfloop transitions, 375 changer transitions 0/510 dead transitions. [2021-03-25 00:18:53,816 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 510 transitions, 7503 flow [2021-03-25 00:18:53,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 00:18:53,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 00:18:53,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 272 transitions. [2021-03-25 00:18:53,817 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6296296296296297 [2021-03-25 00:18:53,817 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 272 transitions. [2021-03-25 00:18:53,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 272 transitions. [2021-03-25 00:18:53,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:18:53,818 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 272 transitions. [2021-03-25 00:18:53,818 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 45.333333333333336) internal successors, (272), 6 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:53,819 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 72.0) internal successors, (504), 7 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:53,819 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 72.0) internal successors, (504), 7 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:53,819 INFO L185 Difference]: Start difference. First operand has 64 places, 370 transitions, 4632 flow. Second operand 6 states and 272 transitions. [2021-03-25 00:18:53,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 510 transitions, 7503 flow [2021-03-25 00:18:53,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 510 transitions, 7282 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-25 00:18:53,985 INFO L241 Difference]: Finished difference. Result has 68 places, 480 transitions, 7018 flow [2021-03-25 00:18:53,985 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=4481, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=265, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=7018, PETRI_PLACES=68, PETRI_TRANSITIONS=480} [2021-03-25 00:18:53,985 INFO L343 CegarLoopForPetriNet]: 47 programPoint places, 21 predicate places. [2021-03-25 00:18:53,985 INFO L480 AbstractCegarLoop]: Abstraction has has 68 places, 480 transitions, 7018 flow [2021-03-25 00:18:53,986 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 37.5) internal successors, (225), 6 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:53,986 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:18:53,986 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] [2021-03-25 00:18:53,986 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-25 00:18:53,986 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 00:18:53,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:18:53,986 INFO L82 PathProgramCache]: Analyzing trace with hash 1303483375, now seen corresponding path program 7 times [2021-03-25 00:18:53,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:18:53,987 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938447632] [2021-03-25 00:18:53,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:18:54,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:18:54,020 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:54,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:18:54,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:54,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:54,027 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:54,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:54,032 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:54,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:54,038 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:54,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:54,043 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:54,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:18:54,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:18:54,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938447632] [2021-03-25 00:18:54,044 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:18:54,044 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-25 00:18:54,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269393635] [2021-03-25 00:18:54,044 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-25 00:18:54,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:18:54,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-25 00:18:54,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-03-25 00:18:54,047 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 72 [2021-03-25 00:18:54,047 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 480 transitions, 7018 flow. Second operand has 7 states, 7 states have (on average 37.142857142857146) internal successors, (260), 7 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:54,047 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:18:54,047 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 72 [2021-03-25 00:18:54,048 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:18:56,844 INFO L129 PetriNetUnfolder]: 19354/27707 cut-off events. [2021-03-25 00:18:56,844 INFO L130 PetriNetUnfolder]: For 142465/148138 co-relation queries the response was YES. [2021-03-25 00:18:56,920 INFO L84 FinitePrefix]: Finished finitePrefix Result has 168663 conditions, 27707 events. 19354/27707 cut-off events. For 142465/148138 co-relation queries the response was YES. Maximal size of possible extension queue 1796. Compared 182855 event pairs, 2879 based on Foata normal form. 420/28073 useless extension candidates. Maximal degree in co-relation 167947. Up to 13208 conditions per place. [2021-03-25 00:18:57,050 INFO L132 encePairwiseOnDemand]: 58/72 looper letters, 94 selfloop transitions, 556 changer transitions 0/663 dead transitions. [2021-03-25 00:18:57,050 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 663 transitions, 10603 flow [2021-03-25 00:18:57,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 00:18:57,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 00:18:57,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 320 transitions. [2021-03-25 00:18:57,051 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6349206349206349 [2021-03-25 00:18:57,052 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 320 transitions. [2021-03-25 00:18:57,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 320 transitions. [2021-03-25 00:18:57,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:18:57,052 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 320 transitions. [2021-03-25 00:18:57,053 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:57,053 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 72.0) internal successors, (576), 8 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:57,054 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 72.0) internal successors, (576), 8 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:57,054 INFO L185 Difference]: Start difference. First operand has 68 places, 480 transitions, 7018 flow. Second operand 7 states and 320 transitions. [2021-03-25 00:18:57,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 663 transitions, 10603 flow [2021-03-25 00:18:57,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 663 transitions, 10107 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-25 00:18:57,258 INFO L241 Difference]: Finished difference. Result has 74 places, 647 transitions, 10696 flow [2021-03-25 00:18:57,259 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=6606, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=480, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=417, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10696, PETRI_PLACES=74, PETRI_TRANSITIONS=647} [2021-03-25 00:18:57,259 INFO L343 CegarLoopForPetriNet]: 47 programPoint places, 27 predicate places. [2021-03-25 00:18:57,259 INFO L480 AbstractCegarLoop]: Abstraction has has 74 places, 647 transitions, 10696 flow [2021-03-25 00:18:57,260 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 37.142857142857146) internal successors, (260), 7 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:57,260 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:18:57,260 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] [2021-03-25 00:18:57,260 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-25 00:18:57,260 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 00:18:57,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:18:57,260 INFO L82 PathProgramCache]: Analyzing trace with hash 2066966145, now seen corresponding path program 8 times [2021-03-25 00:18:57,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:18:57,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191576591] [2021-03-25 00:18:57,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:18:57,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:18:57,275 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:57,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:18:57,278 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:57,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:57,283 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:57,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:57,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:57,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:57,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:57,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:57,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:57,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:18:57,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:18:57,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191576591] [2021-03-25 00:18:57,301 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:18:57,301 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-25 00:18:57,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571069723] [2021-03-25 00:18:57,301 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-25 00:18:57,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:18:57,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-25 00:18:57,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-03-25 00:18:57,302 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 72 [2021-03-25 00:18:57,303 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 647 transitions, 10696 flow. Second operand has 7 states, 7 states have (on average 37.142857142857146) internal successors, (260), 7 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:57,303 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:18:57,303 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 72 [2021-03-25 00:18:57,303 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:19:01,055 INFO L129 PetriNetUnfolder]: 20349/29277 cut-off events. [2021-03-25 00:19:01,055 INFO L130 PetriNetUnfolder]: For 232640/240741 co-relation queries the response was YES. [2021-03-25 00:19:01,150 INFO L84 FinitePrefix]: Finished finitePrefix Result has 203806 conditions, 29277 events. 20349/29277 cut-off events. For 232640/240741 co-relation queries the response was YES. Maximal size of possible extension queue 1928. Compared 197123 event pairs, 2891 based on Foata normal form. 792/30016 useless extension candidates. Maximal degree in co-relation 203112. Up to 14015 conditions per place. [2021-03-25 00:19:01,304 INFO L132 encePairwiseOnDemand]: 59/72 looper letters, 95 selfloop transitions, 747 changer transitions 0/855 dead transitions. [2021-03-25 00:19:01,305 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 855 transitions, 16133 flow [2021-03-25 00:19:01,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 00:19:01,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 00:19:01,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 321 transitions. [2021-03-25 00:19:01,306 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6369047619047619 [2021-03-25 00:19:01,307 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 321 transitions. [2021-03-25 00:19:01,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 321 transitions. [2021-03-25 00:19:01,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:19:01,307 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 321 transitions. [2021-03-25 00:19:01,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 45.857142857142854) internal successors, (321), 7 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:19:01,309 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 72.0) internal successors, (576), 8 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:19:01,309 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 72.0) internal successors, (576), 8 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:19:01,309 INFO L185 Difference]: Start difference. First operand has 74 places, 647 transitions, 10696 flow. Second operand 7 states and 321 transitions. [2021-03-25 00:19:01,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 855 transitions, 16133 flow [2021-03-25 00:19:01,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 855 transitions, 15979 flow, removed 6 selfloop flow, removed 2 redundant places. [2021-03-25 00:19:01,769 INFO L241 Difference]: Finished difference. Result has 79 places, 839 transitions, 16088 flow [2021-03-25 00:19:01,769 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=10600, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=647, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=555, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=16088, PETRI_PLACES=79, PETRI_TRANSITIONS=839} [2021-03-25 00:19:01,770 INFO L343 CegarLoopForPetriNet]: 47 programPoint places, 32 predicate places. [2021-03-25 00:19:01,770 INFO L480 AbstractCegarLoop]: Abstraction has has 79 places, 839 transitions, 16088 flow [2021-03-25 00:19:01,770 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 37.142857142857146) internal successors, (260), 7 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:19:01,770 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:19:01,770 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] [2021-03-25 00:19:01,770 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-25 00:19:01,771 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 00:19:01,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:19:01,771 INFO L82 PathProgramCache]: Analyzing trace with hash -423885361, now seen corresponding path program 9 times [2021-03-25 00:19:01,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:19:01,771 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548640821] [2021-03-25 00:19:01,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:19:01,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:19:01,785 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:19:01,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:19:01,789 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:19:01,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:19:01,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:19:01,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:19:01,797 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:19:01,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:19:01,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:19:01,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:19:01,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:19:01,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548640821] [2021-03-25 00:19:01,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:19:01,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 00:19:01,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78638671] [2021-03-25 00:19:01,804 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 00:19:01,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:19:01,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 00:19:01,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-03-25 00:19:01,805 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 72 [2021-03-25 00:19:01,805 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 839 transitions, 16088 flow. Second operand has 6 states, 6 states have (on average 37.5) internal successors, (225), 6 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:19:01,806 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:19:01,806 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 72 [2021-03-25 00:19:01,806 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:19:06,591 INFO L129 PetriNetUnfolder]: 21544/31275 cut-off events. [2021-03-25 00:19:06,591 INFO L130 PetriNetUnfolder]: For 304271/312365 co-relation queries the response was YES. [2021-03-25 00:19:06,704 INFO L84 FinitePrefix]: Finished finitePrefix Result has 238548 conditions, 31275 events. 21544/31275 cut-off events. For 304271/312365 co-relation queries the response was YES. Maximal size of possible extension queue 2090. Compared 215463 event pairs, 2980 based on Foata normal form. 883/32116 useless extension candidates. Maximal degree in co-relation 237751. Up to 14830 conditions per place. [2021-03-25 00:19:06,884 INFO L132 encePairwiseOnDemand]: 59/72 looper letters, 214 selfloop transitions, 832 changer transitions 0/1059 dead transitions. [2021-03-25 00:19:06,884 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 1059 transitions, 22657 flow [2021-03-25 00:19:06,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 00:19:06,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 00:19:06,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 272 transitions. [2021-03-25 00:19:06,885 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6296296296296297 [2021-03-25 00:19:06,885 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 272 transitions. [2021-03-25 00:19:06,885 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 272 transitions. [2021-03-25 00:19:06,886 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:19:06,886 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 272 transitions. [2021-03-25 00:19:06,886 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 45.333333333333336) internal successors, (272), 6 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:19:06,888 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 72.0) internal successors, (504), 7 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:19:06,888 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 72.0) internal successors, (504), 7 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:19:06,888 INFO L185 Difference]: Start difference. First operand has 79 places, 839 transitions, 16088 flow. Second operand 6 states and 272 transitions. [2021-03-25 00:19:06,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 1059 transitions, 22657 flow [2021-03-25 00:19:07,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 1059 transitions, 21589 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-25 00:19:07,423 INFO L241 Difference]: Finished difference. Result has 81 places, 1032 transitions, 21306 flow [2021-03-25 00:19:07,424 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=15125, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=835, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=635, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=21306, PETRI_PLACES=81, PETRI_TRANSITIONS=1032} [2021-03-25 00:19:07,424 INFO L343 CegarLoopForPetriNet]: 47 programPoint places, 34 predicate places. [2021-03-25 00:19:07,424 INFO L480 AbstractCegarLoop]: Abstraction has has 81 places, 1032 transitions, 21306 flow [2021-03-25 00:19:07,424 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 37.5) internal successors, (225), 6 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:19:07,424 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:19:07,424 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] [2021-03-25 00:19:07,424 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-25 00:19:07,424 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 00:19:07,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:19:07,425 INFO L82 PathProgramCache]: Analyzing trace with hash 1137848471, now seen corresponding path program 10 times [2021-03-25 00:19:07,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:19:07,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601534441] [2021-03-25 00:19:07,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:19:07,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:19:07,438 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:19:07,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:19:07,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:19:07,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:19:07,445 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:19:07,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:19:07,450 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:19:07,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:19:07,455 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:19:07,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:19:07,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:19:07,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601534441] [2021-03-25 00:19:07,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:19:07,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 00:19:07,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944868068] [2021-03-25 00:19:07,457 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 00:19:07,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:19:07,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 00:19:07,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-03-25 00:19:07,458 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 72 [2021-03-25 00:19:07,458 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 1032 transitions, 21306 flow. Second operand has 6 states, 6 states have (on average 37.5) internal successors, (225), 6 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:19:07,458 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:19:07,458 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 72 [2021-03-25 00:19:07,458 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:19:13,156 INFO L129 PetriNetUnfolder]: 21876/31906 cut-off events. [2021-03-25 00:19:13,156 INFO L130 PetriNetUnfolder]: For 339031/346980 co-relation queries the response was YES. [2021-03-25 00:19:13,259 INFO L84 FinitePrefix]: Finished finitePrefix Result has 247681 conditions, 31906 events. 21876/31906 cut-off events. For 339031/346980 co-relation queries the response was YES. Maximal size of possible extension queue 2197. Compared 222154 event pairs, 3212 based on Foata normal form. 636/32501 useless extension candidates. Maximal degree in co-relation 246914. Up to 15195 conditions per place. [2021-03-25 00:19:13,434 INFO L132 encePairwiseOnDemand]: 58/72 looper letters, 213 selfloop transitions, 970 changer transitions 0/1196 dead transitions. [2021-03-25 00:19:13,435 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 1196 transitions, 27081 flow [2021-03-25 00:19:13,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 00:19:13,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 00:19:13,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 271 transitions. [2021-03-25 00:19:13,436 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6273148148148148 [2021-03-25 00:19:13,436 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 271 transitions. [2021-03-25 00:19:13,436 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 271 transitions. [2021-03-25 00:19:13,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:19:13,436 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 271 transitions. [2021-03-25 00:19:13,437 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 45.166666666666664) internal successors, (271), 6 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:19:13,437 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 72.0) internal successors, (504), 7 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:19:13,438 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 72.0) internal successors, (504), 7 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:19:13,438 INFO L185 Difference]: Start difference. First operand has 81 places, 1032 transitions, 21306 flow. Second operand 6 states and 271 transitions. [2021-03-25 00:19:13,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 1196 transitions, 27081 flow [2021-03-25 00:19:13,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 1196 transitions, 26074 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-25 00:19:13,990 INFO L241 Difference]: Finished difference. Result has 85 places, 1172 transitions, 26338 flow [2021-03-25 00:19:13,990 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=20343, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1028, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=826, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=26338, PETRI_PLACES=85, PETRI_TRANSITIONS=1172} [2021-03-25 00:19:13,991 INFO L343 CegarLoopForPetriNet]: 47 programPoint places, 38 predicate places. [2021-03-25 00:19:13,991 INFO L480 AbstractCegarLoop]: Abstraction has has 85 places, 1172 transitions, 26338 flow [2021-03-25 00:19:13,991 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 37.5) internal successors, (225), 6 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:19:13,991 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:19:13,991 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] [2021-03-25 00:19:13,991 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-25 00:19:13,991 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 00:19:13,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:19:13,992 INFO L82 PathProgramCache]: Analyzing trace with hash 63088877, now seen corresponding path program 11 times [2021-03-25 00:19:13,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:19:13,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89739159] [2021-03-25 00:19:13,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:19:13,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:19:14,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:19:14,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:19:14,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:19:14,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:19:14,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:19:14,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:19:14,015 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:19:14,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:19:14,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:19:14,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89739159] [2021-03-25 00:19:14,018 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:19:14,018 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 00:19:14,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422622300] [2021-03-25 00:19:14,018 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 00:19:14,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:19:14,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 00:19:14,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-25 00:19:14,019 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 72 [2021-03-25 00:19:14,019 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 1172 transitions, 26338 flow. Second operand has 5 states, 5 states have (on average 38.0) internal successors, (190), 5 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:19:14,019 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:19:14,019 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 72 [2021-03-25 00:19:14,019 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:19:20,433 INFO L129 PetriNetUnfolder]: 22047/32248 cut-off events. [2021-03-25 00:19:20,433 INFO L130 PetriNetUnfolder]: For 416869/428687 co-relation queries the response was YES. [2021-03-25 00:19:20,536 INFO L84 FinitePrefix]: Finished finitePrefix Result has 262155 conditions, 32248 events. 22047/32248 cut-off events. For 416869/428687 co-relation queries the response was YES. Maximal size of possible extension queue 2201. Compared 226400 event pairs, 4826 based on Foata normal form. 410/32610 useless extension candidates. Maximal degree in co-relation 261399. Up to 28342 conditions per place. [2021-03-25 00:19:20,694 INFO L132 encePairwiseOnDemand]: 60/72 looper letters, 590 selfloop transitions, 740 changer transitions 0/1343 dead transitions. [2021-03-25 00:19:20,694 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 1343 transitions, 33072 flow [2021-03-25 00:19:20,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 00:19:20,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 00:19:20,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 221 transitions. [2021-03-25 00:19:20,695 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6138888888888889 [2021-03-25 00:19:20,695 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 221 transitions. [2021-03-25 00:19:20,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 221 transitions. [2021-03-25 00:19:20,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:19:20,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 221 transitions. [2021-03-25 00:19:20,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 44.2) internal successors, (221), 5 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:19:20,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 72.0) internal successors, (432), 6 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:19:20,697 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 72.0) internal successors, (432), 6 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:19:20,697 INFO L185 Difference]: Start difference. First operand has 85 places, 1172 transitions, 26338 flow. Second operand 5 states and 221 transitions. [2021-03-25 00:19:20,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 1343 transitions, 33072 flow [2021-03-25 00:19:21,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 1343 transitions, 31925 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-25 00:19:21,336 INFO L241 Difference]: Finished difference. Result has 87 places, 1312 transitions, 30714 flow [2021-03-25 00:19:21,337 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=25179, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=594, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=568, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=30714, PETRI_PLACES=87, PETRI_TRANSITIONS=1312} [2021-03-25 00:19:21,337 INFO L343 CegarLoopForPetriNet]: 47 programPoint places, 40 predicate places. [2021-03-25 00:19:21,337 INFO L480 AbstractCegarLoop]: Abstraction has has 87 places, 1312 transitions, 30714 flow [2021-03-25 00:19:21,337 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 38.0) internal successors, (190), 5 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:19:21,337 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:19:21,337 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] [2021-03-25 00:19:21,337 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-25 00:19:21,337 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 00:19:21,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:19:21,338 INFO L82 PathProgramCache]: Analyzing trace with hash 795450909, now seen corresponding path program 12 times [2021-03-25 00:19:21,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:19:21,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359623410] [2021-03-25 00:19:21,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:19:21,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:19:21,349 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:19:21,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:19:21,351 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:19:21,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:19:21,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:19:21,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:19:21,359 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:19:21,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:19:21,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:19:21,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359623410] [2021-03-25 00:19:21,360 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:19:21,360 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 00:19:21,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361815420] [2021-03-25 00:19:21,360 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 00:19:21,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:19:21,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 00:19:21,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-25 00:19:21,361 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 72 [2021-03-25 00:19:21,361 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 1312 transitions, 30714 flow. Second operand has 5 states, 5 states have (on average 38.0) internal successors, (190), 5 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:19:21,361 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:19:21,361 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 72 [2021-03-25 00:19:21,361 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:19:27,917 INFO L129 PetriNetUnfolder]: 21741/31851 cut-off events. [2021-03-25 00:19:27,917 INFO L130 PetriNetUnfolder]: For 381619/393213 co-relation queries the response was YES. [2021-03-25 00:19:28,181 INFO L84 FinitePrefix]: Finished finitePrefix Result has 253498 conditions, 31851 events. 21741/31851 cut-off events. For 381619/393213 co-relation queries the response was YES. Maximal size of possible extension queue 2113. Compared 224097 event pairs, 5043 based on Foata normal form. 282/32078 useless extension candidates. Maximal degree in co-relation 252797. Up to 28156 conditions per place. [2021-03-25 00:19:28,331 INFO L132 encePairwiseOnDemand]: 59/72 looper letters, 589 selfloop transitions, 828 changer transitions 0/1430 dead transitions. [2021-03-25 00:19:28,331 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 1430 transitions, 36378 flow [2021-03-25 00:19:28,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 00:19:28,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 00:19:28,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 220 transitions. [2021-03-25 00:19:28,332 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6111111111111112 [2021-03-25 00:19:28,332 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 220 transitions. [2021-03-25 00:19:28,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 220 transitions. [2021-03-25 00:19:28,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:19:28,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 220 transitions. [2021-03-25 00:19:28,333 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 44.0) internal successors, (220), 5 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:19:28,333 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 72.0) internal successors, (432), 6 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:19:28,334 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 72.0) internal successors, (432), 6 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:19:28,334 INFO L185 Difference]: Start difference. First operand has 87 places, 1312 transitions, 30714 flow. Second operand 5 states and 220 transitions. [2021-03-25 00:19:28,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 1430 transitions, 36378 flow [2021-03-25 00:19:28,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 1430 transitions, 35553 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-25 00:19:28,991 INFO L241 Difference]: Finished difference. Result has 91 places, 1404 transitions, 34867 flow [2021-03-25 00:19:28,992 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=29871, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=732, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=572, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=34867, PETRI_PLACES=91, PETRI_TRANSITIONS=1404} [2021-03-25 00:19:28,992 INFO L343 CegarLoopForPetriNet]: 47 programPoint places, 44 predicate places. [2021-03-25 00:19:28,992 INFO L480 AbstractCegarLoop]: Abstraction has has 91 places, 1404 transitions, 34867 flow [2021-03-25 00:19:28,992 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 38.0) internal successors, (190), 5 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:19:28,992 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:19:28,992 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] [2021-03-25 00:19:28,992 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-25 00:19:28,992 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 00:19:28,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:19:28,993 INFO L82 PathProgramCache]: Analyzing trace with hash 1384220479, now seen corresponding path program 13 times [2021-03-25 00:19:28,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:19:28,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832789714] [2021-03-25 00:19:28,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:19:29,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:19:29,033 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:19:29,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:19:29,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:19:29,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:19:29,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:19:29,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:19:29,049 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:19:29,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:19:29,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:19:29,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832789714] [2021-03-25 00:19:29,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:19:29,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 00:19:29,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308425129] [2021-03-25 00:19:29,050 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 00:19:29,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:19:29,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 00:19:29,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-25 00:19:29,051 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 72 [2021-03-25 00:19:29,051 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 1404 transitions, 34867 flow. Second operand has 5 states, 5 states have (on average 38.0) internal successors, (190), 5 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:19:29,051 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:19:29,051 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 72 [2021-03-25 00:19:29,051 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:19:36,045 INFO L129 PetriNetUnfolder]: 21628/31742 cut-off events. [2021-03-25 00:19:36,045 INFO L130 PetriNetUnfolder]: For 440980/451533 co-relation queries the response was YES. [2021-03-25 00:19:36,154 INFO L84 FinitePrefix]: Finished finitePrefix Result has 255987 conditions, 31742 events. 21628/31742 cut-off events. For 440980/451533 co-relation queries the response was YES. Maximal size of possible extension queue 2085. Compared 223884 event pairs, 4600 based on Foata normal form. 326/32026 useless extension candidates. Maximal degree in co-relation 255334. Up to 27982 conditions per place. [2021-03-25 00:19:36,310 INFO L132 encePairwiseOnDemand]: 60/72 looper letters, 590 selfloop transitions, 881 changer transitions 1/1485 dead transitions. [2021-03-25 00:19:36,310 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 1485 transitions, 39792 flow [2021-03-25 00:19:36,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 00:19:36,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 00:19:36,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 221 transitions. [2021-03-25 00:19:36,311 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6138888888888889 [2021-03-25 00:19:36,311 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 221 transitions. [2021-03-25 00:19:36,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 221 transitions. [2021-03-25 00:19:36,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:19:36,312 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 221 transitions. [2021-03-25 00:19:36,312 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 44.2) internal successors, (221), 5 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:19:36,313 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 72.0) internal successors, (432), 6 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:19:36,313 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 72.0) internal successors, (432), 6 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:19:36,313 INFO L185 Difference]: Start difference. First operand has 91 places, 1404 transitions, 34867 flow. Second operand 5 states and 221 transitions. [2021-03-25 00:19:36,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 1485 transitions, 39792 flow [2021-03-25 00:19:37,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 1485 transitions, 38913 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-25 00:19:37,150 INFO L241 Difference]: Finished difference. Result has 94 places, 1461 transitions, 37801 flow [2021-03-25 00:19:37,152 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=33504, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=805, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=577, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=37801, PETRI_PLACES=94, PETRI_TRANSITIONS=1461} [2021-03-25 00:19:37,152 INFO L343 CegarLoopForPetriNet]: 47 programPoint places, 47 predicate places. [2021-03-25 00:19:37,152 INFO L480 AbstractCegarLoop]: Abstraction has has 94 places, 1461 transitions, 37801 flow [2021-03-25 00:19:37,153 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 38.0) internal successors, (190), 5 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:19:37,153 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:19:37,153 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] [2021-03-25 00:19:37,153 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-03-25 00:19:37,153 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 00:19:37,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:19:37,153 INFO L82 PathProgramCache]: Analyzing trace with hash -146284571, now seen corresponding path program 14 times [2021-03-25 00:19:37,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:19:37,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448163293] [2021-03-25 00:19:37,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:19:37,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:19:37,168 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:19:37,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:19:37,171 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:19:37,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:19:37,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:19:37,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:19:37,182 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:19:37,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:19:37,189 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:19:37,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:19:37,195 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:19:37,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:19:37,201 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:19:37,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:19:37,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:19:37,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448163293] [2021-03-25 00:19:37,202 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:19:37,202 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-25 00:19:37,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989361196] [2021-03-25 00:19:37,203 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-25 00:19:37,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:19:37,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-25 00:19:37,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-03-25 00:19:37,204 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 72 [2021-03-25 00:19:37,204 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 1461 transitions, 37801 flow. Second operand has 8 states, 8 states have (on average 36.875) internal successors, (295), 8 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:19:37,204 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:19:37,204 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 72 [2021-03-25 00:19:37,204 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:19:44,640 INFO L129 PetriNetUnfolder]: 21520/31581 cut-off events. [2021-03-25 00:19:44,640 INFO L130 PetriNetUnfolder]: For 418860/426600 co-relation queries the response was YES. [2021-03-25 00:19:44,750 INFO L84 FinitePrefix]: Finished finitePrefix Result has 257772 conditions, 31581 events. 21520/31581 cut-off events. For 418860/426600 co-relation queries the response was YES. Maximal size of possible extension queue 2120. Compared 223140 event pairs, 2686 based on Foata normal form. 407/31954 useless extension candidates. Maximal degree in co-relation 257107. Up to 15132 conditions per place. [2021-03-25 00:19:44,899 INFO L132 encePairwiseOnDemand]: 58/72 looper letters, 43 selfloop transitions, 1638 changer transitions 0/1694 dead transitions. [2021-03-25 00:19:44,899 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 1694 transitions, 47426 flow [2021-03-25 00:19:44,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-25 00:19:44,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-25 00:19:44,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 368 transitions. [2021-03-25 00:19:44,901 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6388888888888888 [2021-03-25 00:19:44,901 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 368 transitions. [2021-03-25 00:19:44,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 368 transitions. [2021-03-25 00:19:44,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:19:44,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 368 transitions. [2021-03-25 00:19:44,902 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 46.0) internal successors, (368), 8 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:19:44,903 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 72.0) internal successors, (648), 9 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:19:44,903 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 72.0) internal successors, (648), 9 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:19:44,903 INFO L185 Difference]: Start difference. First operand has 94 places, 1461 transitions, 37801 flow. Second operand 8 states and 368 transitions. [2021-03-25 00:19:44,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 1694 transitions, 47426 flow [2021-03-25 00:19:45,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 1694 transitions, 46392 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-25 00:19:45,559 INFO L241 Difference]: Finished difference. Result has 101 places, 1680 transitions, 47410 flow [2021-03-25 00:19:45,560 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=36686, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1411, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=47410, PETRI_PLACES=101, PETRI_TRANSITIONS=1680} [2021-03-25 00:19:45,560 INFO L343 CegarLoopForPetriNet]: 47 programPoint places, 54 predicate places. [2021-03-25 00:19:45,560 INFO L480 AbstractCegarLoop]: Abstraction has has 101 places, 1680 transitions, 47410 flow [2021-03-25 00:19:45,560 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 36.875) internal successors, (295), 8 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:19:45,560 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:19:45,560 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] [2021-03-25 00:19:45,560 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-03-25 00:19:45,560 INFO L428 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 00:19:45,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:19:45,561 INFO L82 PathProgramCache]: Analyzing trace with hash 2015828493, now seen corresponding path program 15 times [2021-03-25 00:19:45,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:19:45,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569200220] [2021-03-25 00:19:45,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:19:45,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:19:45,573 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:19:45,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:19:45,576 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:19:45,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:19:45,579 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:19:45,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:19:45,583 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:19:45,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:19:45,584 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:19:45,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:19:45,589 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:19:45,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:19:45,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:19:45,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569200220] [2021-03-25 00:19:45,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:19:45,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 00:19:45,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680743427] [2021-03-25 00:19:45,590 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 00:19:45,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:19:45,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 00:19:45,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-03-25 00:19:45,591 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 72 [2021-03-25 00:19:45,591 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 1680 transitions, 47410 flow. Second operand has 6 states, 6 states have (on average 37.5) internal successors, (225), 6 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:19:45,591 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:19:45,591 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 72 [2021-03-25 00:19:45,591 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:19:53,191 INFO L129 PetriNetUnfolder]: 17949/27302 cut-off events. [2021-03-25 00:19:53,192 INFO L130 PetriNetUnfolder]: For 377588/381875 co-relation queries the response was YES. [2021-03-25 00:19:53,290 INFO L84 FinitePrefix]: Finished finitePrefix Result has 241751 conditions, 27302 events. 17949/27302 cut-off events. For 377588/381875 co-relation queries the response was YES. Maximal size of possible extension queue 1812. Compared 199550 event pairs, 2831 based on Foata normal form. 1344/28629 useless extension candidates. Maximal degree in co-relation 240806. Up to 12860 conditions per place. [2021-03-25 00:19:53,423 INFO L132 encePairwiseOnDemand]: 58/72 looper letters, 238 selfloop transitions, 1355 changer transitions 0/1606 dead transitions. [2021-03-25 00:19:53,423 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 1606 transitions, 46705 flow [2021-03-25 00:19:53,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 00:19:53,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 00:19:53,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 270 transitions. [2021-03-25 00:19:53,424 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.625 [2021-03-25 00:19:53,424 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 270 transitions. [2021-03-25 00:19:53,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 270 transitions. [2021-03-25 00:19:53,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:19:53,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 270 transitions. [2021-03-25 00:19:53,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 45.0) internal successors, (270), 6 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:19:53,426 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 72.0) internal successors, (504), 7 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:19:53,426 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 72.0) internal successors, (504), 7 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:19:53,426 INFO L185 Difference]: Start difference. First operand has 101 places, 1680 transitions, 47410 flow. Second operand 6 states and 270 transitions. [2021-03-25 00:19:53,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 1606 transitions, 46705 flow [2021-03-25 00:19:54,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 1606 transitions, 43129 flow, removed 997 selfloop flow, removed 4 redundant places. [2021-03-25 00:19:54,620 INFO L241 Difference]: Finished difference. Result has 104 places, 1569 transitions, 43410 flow [2021-03-25 00:19:54,621 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=31393, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1060, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=43410, PETRI_PLACES=104, PETRI_TRANSITIONS=1569} [2021-03-25 00:19:54,621 INFO L343 CegarLoopForPetriNet]: 47 programPoint places, 57 predicate places. [2021-03-25 00:19:54,621 INFO L480 AbstractCegarLoop]: Abstraction has has 104 places, 1569 transitions, 43410 flow [2021-03-25 00:19:54,621 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 37.5) internal successors, (225), 6 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:19:54,621 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:19:54,621 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 00:19:54,621 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-03-25 00:19:54,621 INFO L428 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 00:19:54,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:19:54,622 INFO L82 PathProgramCache]: Analyzing trace with hash -1694841813, now seen corresponding path program 16 times [2021-03-25 00:19:54,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:19:54,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407151514] [2021-03-25 00:19:54,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:19:54,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:19:54,634 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:19:54,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:19:54,637 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:19:54,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:19:54,641 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:19:54,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 00:19:54,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:19:54,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:19:54,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:19:54,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:19:54,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:19:54,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:19:54,655 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:19:54,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:19:54,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:19:54,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407151514] [2021-03-25 00:19:54,656 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:19:54,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-25 00:19:54,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243649740] [2021-03-25 00:19:54,656 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-25 00:19:54,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:19:54,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-25 00:19:54,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-25 00:19:54,657 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 72 [2021-03-25 00:19:54,657 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 1569 transitions, 43410 flow. Second operand has 7 states, 7 states have (on average 37.142857142857146) internal successors, (260), 7 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:19:54,657 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:19:54,657 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 72 [2021-03-25 00:19:54,657 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:20:03,627 INFO L129 PetriNetUnfolder]: 21512/32799 cut-off events. [2021-03-25 00:20:03,628 INFO L130 PetriNetUnfolder]: For 457866/462470 co-relation queries the response was YES. [2021-03-25 00:20:03,786 INFO L84 FinitePrefix]: Finished finitePrefix Result has 283106 conditions, 32799 events. 21512/32799 cut-off events. For 457866/462470 co-relation queries the response was YES. Maximal size of possible extension queue 2212. Compared 248232 event pairs, 1363 based on Foata normal form. 302/33081 useless extension candidates. Maximal degree in co-relation 282097. Up to 14719 conditions per place. [2021-03-25 00:20:03,951 INFO L132 encePairwiseOnDemand]: 58/72 looper letters, 135 selfloop transitions, 1663 changer transitions 0/1811 dead transitions. [2021-03-25 00:20:03,951 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 1811 transitions, 52416 flow [2021-03-25 00:20:03,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 00:20:03,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 00:20:03,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 319 transitions. [2021-03-25 00:20:03,952 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6329365079365079 [2021-03-25 00:20:03,952 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 319 transitions. [2021-03-25 00:20:03,952 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 319 transitions. [2021-03-25 00:20:03,952 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:20:03,953 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 319 transitions. [2021-03-25 00:20:03,953 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 45.57142857142857) internal successors, (319), 7 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:20:03,954 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 72.0) internal successors, (576), 8 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:20:03,954 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 72.0) internal successors, (576), 8 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:20:03,954 INFO L185 Difference]: Start difference. First operand has 104 places, 1569 transitions, 43410 flow. Second operand 7 states and 319 transitions. [2021-03-25 00:20:03,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 1811 transitions, 52416 flow [2021-03-25 00:20:05,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 1811 transitions, 50202 flow, removed 224 selfloop flow, removed 4 redundant places. [2021-03-25 00:20:05,902 INFO L241 Difference]: Finished difference. Result has 109 places, 1774 transitions, 51871 flow [2021-03-25 00:20:05,904 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=41516, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1569, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1470, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=51871, PETRI_PLACES=109, PETRI_TRANSITIONS=1774} [2021-03-25 00:20:05,904 INFO L343 CegarLoopForPetriNet]: 47 programPoint places, 62 predicate places. [2021-03-25 00:20:05,904 INFO L480 AbstractCegarLoop]: Abstraction has has 109 places, 1774 transitions, 51871 flow [2021-03-25 00:20:05,904 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 37.142857142857146) internal successors, (260), 7 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:20:05,904 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:20:05,904 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] [2021-03-25 00:20:05,904 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-03-25 00:20:05,904 INFO L428 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 00:20:05,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:20:05,905 INFO L82 PathProgramCache]: Analyzing trace with hash -2071322669, now seen corresponding path program 17 times [2021-03-25 00:20:05,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:20:05,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62194833] [2021-03-25 00:20:05,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:20:05,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:20:05,929 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:20:05,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:20:05,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:20:05,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:20:05,936 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:20:05,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:20:05,941 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:20:05,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:20:05,942 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:20:05,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:20:05,942 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:20:05,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:20:05,943 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:20:05,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:20:05,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:20:05,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:20:05,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:20:05,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62194833] [2021-03-25 00:20:05,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:20:05,953 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 00:20:05,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557606254] [2021-03-25 00:20:05,953 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 00:20:05,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:20:05,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 00:20:05,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-03-25 00:20:05,954 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 72 [2021-03-25 00:20:05,954 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 1774 transitions, 51871 flow. Second operand has 6 states, 6 states have (on average 37.5) internal successors, (225), 6 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:20:05,954 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:20:05,954 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 72 [2021-03-25 00:20:05,954 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:20:16,936 INFO L129 PetriNetUnfolder]: 21798/33394 cut-off events. [2021-03-25 00:20:16,936 INFO L130 PetriNetUnfolder]: For 556134/561093 co-relation queries the response was YES. [2021-03-25 00:20:17,090 INFO L84 FinitePrefix]: Finished finitePrefix Result has 317430 conditions, 33394 events. 21798/33394 cut-off events. For 556134/561093 co-relation queries the response was YES. Maximal size of possible extension queue 2296. Compared 255062 event pairs, 1735 based on Foata normal form. 749/34124 useless extension candidates. Maximal degree in co-relation 316440. Up to 17100 conditions per place. [2021-03-25 00:20:17,264 INFO L132 encePairwiseOnDemand]: 58/72 looper letters, 288 selfloop transitions, 1635 changer transitions 0/1936 dead transitions. [2021-03-25 00:20:17,264 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 1936 transitions, 59914 flow [2021-03-25 00:20:17,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 00:20:17,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 00:20:17,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 270 transitions. [2021-03-25 00:20:17,266 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.625 [2021-03-25 00:20:17,266 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 270 transitions. [2021-03-25 00:20:17,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 270 transitions. [2021-03-25 00:20:17,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:20:17,266 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 270 transitions. [2021-03-25 00:20:17,267 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 45.0) internal successors, (270), 6 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:20:17,267 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 72.0) internal successors, (504), 7 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:20:17,268 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 72.0) internal successors, (504), 7 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:20:17,268 INFO L185 Difference]: Start difference. First operand has 109 places, 1774 transitions, 51871 flow. Second operand 6 states and 270 transitions. [2021-03-25 00:20:17,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 1936 transitions, 59914 flow [2021-03-25 00:20:20,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 1936 transitions, 59762 flow, removed 73 selfloop flow, removed 1 redundant places. [2021-03-25 00:20:20,355 INFO L241 Difference]: Finished difference. Result has 114 places, 1903 transitions, 59689 flow [2021-03-25 00:20:20,356 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=51424, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1763, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1495, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=59689, PETRI_PLACES=114, PETRI_TRANSITIONS=1903} [2021-03-25 00:20:20,356 INFO L343 CegarLoopForPetriNet]: 47 programPoint places, 67 predicate places. [2021-03-25 00:20:20,356 INFO L480 AbstractCegarLoop]: Abstraction has has 114 places, 1903 transitions, 59689 flow [2021-03-25 00:20:20,356 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 37.5) internal successors, (225), 6 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:20:20,356 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:20:20,357 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] [2021-03-25 00:20:20,357 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-03-25 00:20:20,357 INFO L428 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 00:20:20,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:20:20,357 INFO L82 PathProgramCache]: Analyzing trace with hash -1283531399, now seen corresponding path program 18 times [2021-03-25 00:20:20,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:20:20,357 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433883608] [2021-03-25 00:20:20,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:20:20,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:20:20,379 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:20:20,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:20:20,382 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:20:20,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:20:20,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:20:20,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:20:20,390 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:20:20,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:20:20,392 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:20:20,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:20:20,392 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:20:20,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:20:20,393 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:20:20,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:20:20,398 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:20:20,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:20:20,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:20:20,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433883608] [2021-03-25 00:20:20,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:20:20,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 00:20:20,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460535504] [2021-03-25 00:20:20,399 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 00:20:20,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:20:20,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 00:20:20,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-03-25 00:20:20,400 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 72 [2021-03-25 00:20:20,400 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 1903 transitions, 59689 flow. Second operand has 6 states, 6 states have (on average 37.5) internal successors, (225), 6 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:20:20,400 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:20:20,400 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 72 [2021-03-25 00:20:20,400 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:20:32,514 INFO L129 PetriNetUnfolder]: 22235/34309 cut-off events. [2021-03-25 00:20:32,514 INFO L130 PetriNetUnfolder]: For 675409/680858 co-relation queries the response was YES. [2021-03-25 00:20:32,825 INFO L84 FinitePrefix]: Finished finitePrefix Result has 337238 conditions, 34309 events. 22235/34309 cut-off events. For 675409/680858 co-relation queries the response was YES. Maximal size of possible extension queue 2428. Compared 266456 event pairs, 1697 based on Foata normal form. 914/35204 useless extension candidates. Maximal degree in co-relation 336251. Up to 17096 conditions per place. [2021-03-25 00:20:33,006 INFO L132 encePairwiseOnDemand]: 59/72 looper letters, 289 selfloop transitions, 1782 changer transitions 0/2084 dead transitions. [2021-03-25 00:20:33,006 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 2084 transitions, 69093 flow [2021-03-25 00:20:33,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 00:20:33,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 00:20:33,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 271 transitions. [2021-03-25 00:20:33,007 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6273148148148148 [2021-03-25 00:20:33,007 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 271 transitions. [2021-03-25 00:20:33,007 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 271 transitions. [2021-03-25 00:20:33,007 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:20:33,008 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 271 transitions. [2021-03-25 00:20:33,008 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 45.166666666666664) internal successors, (271), 6 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:20:33,009 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 72.0) internal successors, (504), 7 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:20:33,009 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 72.0) internal successors, (504), 7 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:20:33,009 INFO L185 Difference]: Start difference. First operand has 114 places, 1903 transitions, 59689 flow. Second operand 6 states and 271 transitions. [2021-03-25 00:20:33,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 2084 transitions, 69093 flow [2021-03-25 00:20:35,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 2084 transitions, 65874 flow, removed 8 selfloop flow, removed 5 redundant places. [2021-03-25 00:20:35,929 INFO L241 Difference]: Finished difference. Result has 114 places, 2050 transitions, 64785 flow [2021-03-25 00:20:35,930 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=56333, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1890, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1622, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=64785, PETRI_PLACES=114, PETRI_TRANSITIONS=2050} [2021-03-25 00:20:35,930 INFO L343 CegarLoopForPetriNet]: 47 programPoint places, 67 predicate places. [2021-03-25 00:20:35,930 INFO L480 AbstractCegarLoop]: Abstraction has has 114 places, 2050 transitions, 64785 flow [2021-03-25 00:20:35,930 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 37.5) internal successors, (225), 6 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:20:35,930 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:20:35,930 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] [2021-03-25 00:20:35,930 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-03-25 00:20:35,930 INFO L428 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 00:20:35,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:20:35,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1352341805, now seen corresponding path program 19 times [2021-03-25 00:20:35,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:20:35,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751374220] [2021-03-25 00:20:35,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:20:35,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:20:35,946 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:20:35,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:20:35,949 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:20:35,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:20:35,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:20:35,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:20:35,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:20:35,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:20:35,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:20:35,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:20:35,958 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:20:35,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:20:35,960 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:20:35,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:20:35,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:20:35,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:20:35,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:20:35,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751374220] [2021-03-25 00:20:35,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:20:35,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 00:20:35,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784315983] [2021-03-25 00:20:35,967 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 00:20:35,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:20:35,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 00:20:35,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-03-25 00:20:35,968 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 72 [2021-03-25 00:20:35,968 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 2050 transitions, 64785 flow. Second operand has 6 states, 6 states have (on average 37.5) internal successors, (225), 6 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:20:35,968 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:20:35,969 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 72 [2021-03-25 00:20:35,969 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:20:50,212 INFO L129 PetriNetUnfolder]: 22348/35213 cut-off events. [2021-03-25 00:20:50,212 INFO L130 PetriNetUnfolder]: For 796838/804600 co-relation queries the response was YES. [2021-03-25 00:20:50,376 INFO L84 FinitePrefix]: Finished finitePrefix Result has 340648 conditions, 35213 events. 22348/35213 cut-off events. For 796838/804600 co-relation queries the response was YES. Maximal size of possible extension queue 2683. Compared 285716 event pairs, 1713 based on Foata normal form. 1768/36954 useless extension candidates. Maximal degree in co-relation 339672. Up to 17085 conditions per place. [2021-03-25 00:20:50,695 INFO L132 encePairwiseOnDemand]: 59/72 looper letters, 289 selfloop transitions, 2083 changer transitions 0/2385 dead transitions. [2021-03-25 00:20:50,695 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 2385 transitions, 79446 flow [2021-03-25 00:20:50,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 00:20:50,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 00:20:50,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 271 transitions. [2021-03-25 00:20:50,696 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6273148148148148 [2021-03-25 00:20:50,696 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 271 transitions. [2021-03-25 00:20:50,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 271 transitions. [2021-03-25 00:20:50,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:20:50,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 271 transitions. [2021-03-25 00:20:50,697 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 45.166666666666664) internal successors, (271), 6 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:20:50,698 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 72.0) internal successors, (504), 7 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:20:50,698 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 72.0) internal successors, (504), 7 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:20:50,698 INFO L185 Difference]: Start difference. First operand has 114 places, 2050 transitions, 64785 flow. Second operand 6 states and 271 transitions. [2021-03-25 00:20:50,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 2385 transitions, 79446 flow [2021-03-25 00:20:53,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 2385 transitions, 77330 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-25 00:20:54,005 INFO L241 Difference]: Finished difference. Result has 117 places, 2352 transitions, 77368 flow [2021-03-25 00:20:54,006 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=60813, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1982, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1713, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=77368, PETRI_PLACES=117, PETRI_TRANSITIONS=2352} [2021-03-25 00:20:54,006 INFO L343 CegarLoopForPetriNet]: 47 programPoint places, 70 predicate places. [2021-03-25 00:20:54,006 INFO L480 AbstractCegarLoop]: Abstraction has has 117 places, 2352 transitions, 77368 flow [2021-03-25 00:20:54,006 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 37.5) internal successors, (225), 6 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:20:54,006 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:20:54,007 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] [2021-03-25 00:20:54,007 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-03-25 00:20:54,007 INFO L428 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 00:20:54,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:20:54,007 INFO L82 PathProgramCache]: Analyzing trace with hash 1176038891, now seen corresponding path program 20 times [2021-03-25 00:20:54,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:20:54,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680854409] [2021-03-25 00:20:54,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:20:54,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:20:54,021 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:20:54,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:20:54,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:20:54,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:20:54,027 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:20:54,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:20:54,031 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:20:54,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:20:54,032 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:20:54,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:20:54,032 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:20:54,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:20:54,033 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:20:54,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:20:54,033 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:20:54,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:20:54,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:20:54,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:20:54,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:20:54,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:20:54,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:20:54,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:20:54,046 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:20:54,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:20:54,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:20:54,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680854409] [2021-03-25 00:20:54,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:20:54,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-25 00:20:54,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013127688] [2021-03-25 00:20:54,047 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-25 00:20:54,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:20:54,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-25 00:20:54,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-03-25 00:20:54,048 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 72 [2021-03-25 00:20:54,048 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 2352 transitions, 77368 flow. Second operand has 7 states, 7 states have (on average 37.142857142857146) internal successors, (260), 7 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:20:54,048 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:20:54,048 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 72 [2021-03-25 00:20:54,048 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:21:11,390 INFO L129 PetriNetUnfolder]: 23397/37057 cut-off events. [2021-03-25 00:21:11,391 INFO L130 PetriNetUnfolder]: For 836495/841946 co-relation queries the response was YES. [2021-03-25 00:21:11,548 INFO L84 FinitePrefix]: Finished finitePrefix Result has 374451 conditions, 37057 events. 23397/37057 cut-off events. For 836495/841946 co-relation queries the response was YES. Maximal size of possible extension queue 2917. Compared 305715 event pairs, 1917 based on Foata normal form. 914/37952 useless extension candidates. Maximal degree in co-relation 373466. Up to 17399 conditions per place. [2021-03-25 00:21:11,728 INFO L132 encePairwiseOnDemand]: 58/72 looper letters, 308 selfloop transitions, 2292 changer transitions 0/2613 dead transitions. [2021-03-25 00:21:11,728 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 2613 transitions, 90163 flow [2021-03-25 00:21:11,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-25 00:21:11,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-25 00:21:11,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 363 transitions. [2021-03-25 00:21:11,729 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6302083333333334 [2021-03-25 00:21:11,729 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 363 transitions. [2021-03-25 00:21:11,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 363 transitions. [2021-03-25 00:21:11,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:21:11,730 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 363 transitions. [2021-03-25 00:21:11,730 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 45.375) internal successors, (363), 8 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:21:11,731 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 72.0) internal successors, (648), 9 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:21:11,731 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 72.0) internal successors, (648), 9 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:21:11,731 INFO L185 Difference]: Start difference. First operand has 117 places, 2352 transitions, 77368 flow. Second operand 8 states and 363 transitions. [2021-03-25 00:21:11,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 2613 transitions, 90163 flow [2021-03-25 00:21:15,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 2613 transitions, 86933 flow, removed 213 selfloop flow, removed 4 redundant places. [2021-03-25 00:21:15,996 INFO L241 Difference]: Finished difference. Result has 122 places, 2561 transitions, 86925 flow [2021-03-25 00:21:15,997 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=74430, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2083, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=86925, PETRI_PLACES=122, PETRI_TRANSITIONS=2561} [2021-03-25 00:21:15,997 INFO L343 CegarLoopForPetriNet]: 47 programPoint places, 75 predicate places. [2021-03-25 00:21:15,997 INFO L480 AbstractCegarLoop]: Abstraction has has 122 places, 2561 transitions, 86925 flow [2021-03-25 00:21:15,998 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 37.142857142857146) internal successors, (260), 7 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:21:15,998 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:21:15,998 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] [2021-03-25 00:21:15,998 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-03-25 00:21:15,998 INFO L428 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 00:21:15,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:21:15,998 INFO L82 PathProgramCache]: Analyzing trace with hash 1514558893, now seen corresponding path program 21 times [2021-03-25 00:21:15,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:21:15,999 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062974261] [2021-03-25 00:21:15,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:21:16,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:21:16,020 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:21:16,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:21:16,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:21:16,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:21:16,028 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:21:16,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:21:16,032 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:21:16,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:21:16,032 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:21:16,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:21:16,033 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:21:16,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:21:16,033 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:21:16,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:21:16,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:21:16,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:21:16,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:21:16,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:21:16,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:21:16,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:21:16,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:21:16,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:21:16,045 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:21:16,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:21:16,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:21:16,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062974261] [2021-03-25 00:21:16,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:21:16,045 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-25 00:21:16,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798595714] [2021-03-25 00:21:16,046 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-25 00:21:16,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:21:16,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-25 00:21:16,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-03-25 00:21:16,046 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 72 [2021-03-25 00:21:16,047 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 2561 transitions, 86925 flow. Second operand has 7 states, 7 states have (on average 37.142857142857146) internal successors, (260), 7 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:21:16,047 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:21:16,047 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 72 [2021-03-25 00:21:16,047 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:21:38,482 INFO L129 PetriNetUnfolder]: 24674/39623 cut-off events. [2021-03-25 00:21:38,482 INFO L130 PetriNetUnfolder]: For 1109375/1115152 co-relation queries the response was YES. [2021-03-25 00:21:38,644 INFO L84 FinitePrefix]: Finished finitePrefix Result has 414865 conditions, 39623 events. 24674/39623 cut-off events. For 1109375/1115152 co-relation queries the response was YES. Maximal size of possible extension queue 3255. Compared 337488 event pairs, 1935 based on Foata normal form. 1315/40920 useless extension candidates. Maximal degree in co-relation 413809. Up to 17649 conditions per place. [2021-03-25 00:21:39,030 INFO L132 encePairwiseOnDemand]: 59/72 looper letters, 311 selfloop transitions, 2729 changer transitions 0/3053 dead transitions. [2021-03-25 00:21:39,030 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 3053 transitions, 108823 flow [2021-03-25 00:21:39,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-25 00:21:39,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-25 00:21:39,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 366 transitions. [2021-03-25 00:21:39,031 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6354166666666666 [2021-03-25 00:21:39,031 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 366 transitions. [2021-03-25 00:21:39,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 366 transitions. [2021-03-25 00:21:39,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:21:39,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 366 transitions. [2021-03-25 00:21:39,033 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 45.75) internal successors, (366), 8 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:21:39,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 72.0) internal successors, (648), 9 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:21:39,033 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 72.0) internal successors, (648), 9 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:21:39,033 INFO L185 Difference]: Start difference. First operand has 122 places, 2561 transitions, 86925 flow. Second operand 8 states and 366 transitions. [2021-03-25 00:21:39,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 3053 transitions, 108823 flow [2021-03-25 00:21:43,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 3053 transitions, 103319 flow, removed 13 selfloop flow, removed 5 redundant places. [2021-03-25 00:21:44,048 INFO L241 Difference]: Finished difference. Result has 124 places, 2998 transitions, 101786 flow [2021-03-25 00:21:44,050 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=82321, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2561, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2292, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=101786, PETRI_PLACES=124, PETRI_TRANSITIONS=2998} [2021-03-25 00:21:44,050 INFO L343 CegarLoopForPetriNet]: 47 programPoint places, 77 predicate places. [2021-03-25 00:21:44,050 INFO L480 AbstractCegarLoop]: Abstraction has has 124 places, 2998 transitions, 101786 flow [2021-03-25 00:21:44,050 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 37.142857142857146) internal successors, (260), 7 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:21:44,050 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:21:44,050 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] [2021-03-25 00:21:44,050 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-03-25 00:21:44,050 INFO L428 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 00:21:44,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:21:44,051 INFO L82 PathProgramCache]: Analyzing trace with hash -392852829, now seen corresponding path program 22 times [2021-03-25 00:21:44,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:21:44,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763676001] [2021-03-25 00:21:44,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:21:44,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:21:44,064 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:21:44,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:21:44,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:21:44,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:21:44,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:21:44,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:21:44,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:21:44,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:21:44,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:21:44,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:21:44,076 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:21:44,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:21:44,077 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:21:44,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:21:44,077 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:21:44,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:21:44,078 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:21:44,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:21:44,078 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:21:44,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:21:44,083 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:21:44,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:21:44,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:21:44,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:21:44,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:21:44,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763676001] [2021-03-25 00:21:44,090 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:21:44,090 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-25 00:21:44,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091976581] [2021-03-25 00:21:44,090 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-25 00:21:44,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:21:44,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-25 00:21:44,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-03-25 00:21:44,091 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 72 [2021-03-25 00:21:44,091 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 2998 transitions, 101786 flow. Second operand has 7 states, 7 states have (on average 37.142857142857146) internal successors, (260), 7 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:21:44,091 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:21:44,091 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 72 [2021-03-25 00:21:44,091 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:22:11,444 INFO L129 PetriNetUnfolder]: 25148/40935 cut-off events. [2021-03-25 00:22:11,444 INFO L130 PetriNetUnfolder]: For 1169330/1174520 co-relation queries the response was YES. [2021-03-25 00:22:11,646 INFO L84 FinitePrefix]: Finished finitePrefix Result has 432124 conditions, 40935 events. 25148/40935 cut-off events. For 1169330/1174520 co-relation queries the response was YES. Maximal size of possible extension queue 3456. Compared 358799 event pairs, 2012 based on Foata normal form. 1427/42343 useless extension candidates. Maximal degree in co-relation 431117. Up to 17851 conditions per place. [2021-03-25 00:22:11,859 INFO L132 encePairwiseOnDemand]: 59/72 looper letters, 311 selfloop transitions, 3054 changer transitions 20/3398 dead transitions. [2021-03-25 00:22:11,860 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 3398 transitions, 121107 flow [2021-03-25 00:22:11,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-25 00:22:11,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-25 00:22:11,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 366 transitions. [2021-03-25 00:22:11,860 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6354166666666666 [2021-03-25 00:22:11,861 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 366 transitions. [2021-03-25 00:22:11,861 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 366 transitions. [2021-03-25 00:22:11,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:22:11,861 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 366 transitions. [2021-03-25 00:22:11,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 45.75) internal successors, (366), 8 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:22:11,862 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 72.0) internal successors, (648), 9 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:22:11,862 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 72.0) internal successors, (648), 9 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:22:11,862 INFO L185 Difference]: Start difference. First operand has 124 places, 2998 transitions, 101786 flow. Second operand 8 states and 366 transitions. [2021-03-25 00:22:11,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 3398 transitions, 121107 flow [2021-03-25 00:22:18,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 3398 transitions, 120977 flow, removed 11 selfloop flow, removed 2 redundant places. [2021-03-25 00:22:18,235 INFO L241 Difference]: Finished difference. Result has 129 places, 3323 transitions, 118760 flow [2021-03-25 00:22:18,237 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=101594, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2995, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2706, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=118760, PETRI_PLACES=129, PETRI_TRANSITIONS=3323} [2021-03-25 00:22:18,237 INFO L343 CegarLoopForPetriNet]: 47 programPoint places, 82 predicate places. [2021-03-25 00:22:18,237 INFO L480 AbstractCegarLoop]: Abstraction has has 129 places, 3323 transitions, 118760 flow [2021-03-25 00:22:18,237 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 37.142857142857146) internal successors, (260), 7 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:22:18,237 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:22:18,237 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] [2021-03-25 00:22:18,237 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-03-25 00:22:18,237 INFO L428 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 00:22:18,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:22:18,238 INFO L82 PathProgramCache]: Analyzing trace with hash 1203623791, now seen corresponding path program 23 times [2021-03-25 00:22:18,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:22:18,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190114135] [2021-03-25 00:22:18,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:22:18,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:22:18,250 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:22:18,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:22:18,252 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:22:18,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:22:18,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:22:18,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:22:18,260 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:22:18,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:22:18,261 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:22:18,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:22:18,261 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:22:18,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:22:18,262 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:22:18,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:22:18,267 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:22:18,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:22:18,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:22:18,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190114135] [2021-03-25 00:22:18,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:22:18,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 00:22:18,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860215818] [2021-03-25 00:22:18,268 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 00:22:18,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:22:18,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 00:22:18,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-03-25 00:22:18,268 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 72 [2021-03-25 00:22:18,269 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 3323 transitions, 118760 flow. Second operand has 6 states, 6 states have (on average 37.5) internal successors, (225), 6 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:22:18,269 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:22:18,269 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 72 [2021-03-25 00:22:18,269 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:22:50,145 INFO L129 PetriNetUnfolder]: 24280/40250 cut-off events. [2021-03-25 00:22:50,145 INFO L130 PetriNetUnfolder]: For 1180236/1188993 co-relation queries the response was YES. [2021-03-25 00:22:50,350 INFO L84 FinitePrefix]: Finished finitePrefix Result has 430630 conditions, 40250 events. 24280/40250 cut-off events. For 1180236/1188993 co-relation queries the response was YES. Maximal size of possible extension queue 3520. Compared 361572 event pairs, 1778 based on Foata normal form. 1502/41726 useless extension candidates. Maximal degree in co-relation 429546. Up to 17798 conditions per place. [2021-03-25 00:22:50,561 INFO L132 encePairwiseOnDemand]: 59/72 looper letters, 289 selfloop transitions, 3162 changer transitions 24/3488 dead transitions. [2021-03-25 00:22:50,561 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 3488 transitions, 131208 flow [2021-03-25 00:22:50,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 00:22:50,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 00:22:50,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 271 transitions. [2021-03-25 00:22:50,562 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6273148148148148 [2021-03-25 00:22:50,562 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 271 transitions. [2021-03-25 00:22:50,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 271 transitions. [2021-03-25 00:22:50,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:22:50,562 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 271 transitions. [2021-03-25 00:22:50,563 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 45.166666666666664) internal successors, (271), 6 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:22:50,563 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 72.0) internal successors, (504), 7 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:22:50,563 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 72.0) internal successors, (504), 7 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:22:50,563 INFO L185 Difference]: Start difference. First operand has 129 places, 3323 transitions, 118760 flow. Second operand 6 states and 271 transitions. [2021-03-25 00:22:50,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 3488 transitions, 131208 flow [2021-03-25 00:22:57,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 3488 transitions, 127983 flow, removed 10 selfloop flow, removed 4 redundant places. [2021-03-25 00:22:57,847 INFO L241 Difference]: Finished difference. Result has 130 places, 3431 transitions, 125863 flow [2021-03-25 00:22:57,849 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=110772, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2893, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=125863, PETRI_PLACES=130, PETRI_TRANSITIONS=3431} [2021-03-25 00:22:57,849 INFO L343 CegarLoopForPetriNet]: 47 programPoint places, 83 predicate places. [2021-03-25 00:22:57,849 INFO L480 AbstractCegarLoop]: Abstraction has has 130 places, 3431 transitions, 125863 flow [2021-03-25 00:22:57,849 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 37.5) internal successors, (225), 6 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:22:57,849 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:22:57,849 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] [2021-03-25 00:22:57,849 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-03-25 00:22:57,849 INFO L428 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 00:22:57,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:22:57,850 INFO L82 PathProgramCache]: Analyzing trace with hash 1840547557, now seen corresponding path program 24 times [2021-03-25 00:22:57,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:22:57,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665487325] [2021-03-25 00:22:57,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:22:57,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:22:57,874 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:22:57,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:22:57,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:22:57,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:22:57,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:22:57,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:22:57,888 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:22:57,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:22:57,889 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:22:57,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:22:57,890 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:22:57,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:22:57,890 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:22:57,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:22:57,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:22:57,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:22:57,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:22:57,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:22:57,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:22:57,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:22:57,897 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:22:57,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:22:57,903 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:22:57,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:22:57,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:22:57,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665487325] [2021-03-25 00:22:57,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:22:57,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-25 00:22:57,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413813936] [2021-03-25 00:22:57,904 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-25 00:22:57,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:22:57,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-25 00:22:57,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-03-25 00:22:57,905 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 72 [2021-03-25 00:22:57,905 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 3431 transitions, 125863 flow. Second operand has 7 states, 7 states have (on average 37.142857142857146) internal successors, (260), 7 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:22:57,905 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:22:57,905 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 72 [2021-03-25 00:22:57,905 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:23:33,842 INFO L129 PetriNetUnfolder]: 24181/40946 cut-off events. [2021-03-25 00:23:33,842 INFO L130 PetriNetUnfolder]: For 1207126/1211892 co-relation queries the response was YES. [2021-03-25 00:23:34,044 INFO L84 FinitePrefix]: Finished finitePrefix Result has 445812 conditions, 40946 events. 24181/40946 cut-off events. For 1207126/1211892 co-relation queries the response was YES. Maximal size of possible extension queue 3697. Compared 379804 event pairs, 1874 based on Foata normal form. 1612/42544 useless extension candidates. Maximal degree in co-relation 444573. Up to 17939 conditions per place. [2021-03-25 00:23:34,247 INFO L132 encePairwiseOnDemand]: 59/72 looper letters, 311 selfloop transitions, 3484 changer transitions 57/3865 dead transitions. [2021-03-25 00:23:34,247 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 3865 transitions, 148138 flow [2021-03-25 00:23:34,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-25 00:23:34,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-25 00:23:34,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 366 transitions. [2021-03-25 00:23:34,248 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6354166666666666 [2021-03-25 00:23:34,248 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 366 transitions. [2021-03-25 00:23:34,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 366 transitions. [2021-03-25 00:23:34,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:23:34,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 366 transitions. [2021-03-25 00:23:34,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 45.75) internal successors, (366), 8 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:23:34,250 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 72.0) internal successors, (648), 9 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:23:34,250 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 72.0) internal successors, (648), 9 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:23:34,250 INFO L185 Difference]: Start difference. First operand has 130 places, 3431 transitions, 125863 flow. Second operand 8 states and 366 transitions. [2021-03-25 00:23:34,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 3865 transitions, 148138 flow [2021-03-25 00:23:41,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 3865 transitions, 144446 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-25 00:23:41,349 INFO L241 Difference]: Finished difference. Result has 134 places, 3753 transitions, 140655 flow [2021-03-25 00:23:41,351 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=121973, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3091, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=140655, PETRI_PLACES=134, PETRI_TRANSITIONS=3753} [2021-03-25 00:23:41,351 INFO L343 CegarLoopForPetriNet]: 47 programPoint places, 87 predicate places. [2021-03-25 00:23:41,351 INFO L480 AbstractCegarLoop]: Abstraction has has 134 places, 3753 transitions, 140655 flow [2021-03-25 00:23:41,351 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 37.142857142857146) internal successors, (260), 7 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:23:41,351 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:23:41,351 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] [2021-03-25 00:23:41,352 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-03-25 00:23:41,352 INFO L428 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 00:23:41,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:23:41,352 INFO L82 PathProgramCache]: Analyzing trace with hash 1617585469, now seen corresponding path program 25 times [2021-03-25 00:23:41,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:23:41,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124784775] [2021-03-25 00:23:41,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:23:41,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:23:41,364 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:23:41,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:23:41,367 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:23:41,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:23:41,370 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:23:41,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 00:23:41,374 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:23:41,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:23:41,374 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:23:41,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 00:23:41,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:23:41,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:23:41,376 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:23:41,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 00:23:41,376 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:23:41,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:23:41,377 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:23:41,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:23:41,381 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:23:41,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:23:41,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:23:41,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124784775] [2021-03-25 00:23:41,381 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:23:41,381 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 00:23:41,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559344287] [2021-03-25 00:23:41,381 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 00:23:41,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:23:41,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 00:23:41,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-03-25 00:23:41,382 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 72 [2021-03-25 00:23:41,382 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 3753 transitions, 140655 flow. Second operand has 6 states, 6 states have (on average 37.5) internal successors, (225), 6 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:23:41,382 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:23:41,382 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 72 [2021-03-25 00:23:41,382 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:24:23,201 INFO L129 PetriNetUnfolder]: 26742/44991 cut-off events. [2021-03-25 00:24:23,202 INFO L130 PetriNetUnfolder]: For 1488890/1494092 co-relation queries the response was YES. [2021-03-25 00:24:23,438 INFO L84 FinitePrefix]: Finished finitePrefix Result has 472730 conditions, 44991 events. 26742/44991 cut-off events. For 1488890/1494092 co-relation queries the response was YES. Maximal size of possible extension queue 3991. Compared 417849 event pairs, 3304 based on Foata normal form. 352/45322 useless extension candidates. Maximal degree in co-relation 471283. Up to 16116 conditions per place. [2021-03-25 00:24:23,807 INFO L132 encePairwiseOnDemand]: 58/72 looper letters, 304 selfloop transitions, 3539 changer transitions 0/3856 dead transitions. [2021-03-25 00:24:23,807 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 3856 transitions, 149606 flow [2021-03-25 00:24:23,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 00:24:23,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 00:24:23,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 270 transitions. [2021-03-25 00:24:23,808 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.625 [2021-03-25 00:24:23,808 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 270 transitions. [2021-03-25 00:24:23,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 270 transitions. [2021-03-25 00:24:23,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:24:23,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 270 transitions. [2021-03-25 00:24:23,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 45.0) internal successors, (270), 6 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:24:23,809 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 72.0) internal successors, (504), 7 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:24:23,809 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 72.0) internal successors, (504), 7 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:24:23,809 INFO L185 Difference]: Start difference. First operand has 134 places, 3753 transitions, 140655 flow. Second operand 6 states and 270 transitions. [2021-03-25 00:24:23,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 3856 transitions, 149606 flow [2021-03-25 00:24:31,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 3856 transitions, 146084 flow, removed 10 selfloop flow, removed 4 redundant places. [2021-03-25 00:24:31,471 INFO L241 Difference]: Finished difference. Result has 138 places, 3813 transitions, 151805 flow [2021-03-25 00:24:31,473 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=137144, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3753, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3498, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=151805, PETRI_PLACES=138, PETRI_TRANSITIONS=3813} [2021-03-25 00:24:31,473 INFO L343 CegarLoopForPetriNet]: 47 programPoint places, 91 predicate places. [2021-03-25 00:24:31,473 INFO L480 AbstractCegarLoop]: Abstraction has has 138 places, 3813 transitions, 151805 flow [2021-03-25 00:24:31,474 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 37.5) internal successors, (225), 6 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:24:31,474 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:24:31,474 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] [2021-03-25 00:24:31,474 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-03-25 00:24:31,474 INFO L428 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 00:24:31,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:24:31,474 INFO L82 PathProgramCache]: Analyzing trace with hash 1860176699, now seen corresponding path program 26 times [2021-03-25 00:24:31,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:24:31,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810259766] [2021-03-25 00:24:31,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:24:31,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:24:31,486 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:24:31,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:24:31,488 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:24:31,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:24:31,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:24:31,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 00:24:31,496 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:24:31,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:24:31,497 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:24:31,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 00:24:31,497 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:24:31,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:24:31,498 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:24:31,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 00:24:31,498 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:24:31,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:24:31,499 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:24:31,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 00:24:31,499 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:24:31,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:24:31,500 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:24:31,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:24:31,505 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:24:31,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:24:31,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:24:31,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810259766] [2021-03-25 00:24:31,506 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:24:31,506 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 00:24:31,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254274574] [2021-03-25 00:24:31,506 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 00:24:31,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:24:31,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 00:24:31,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-03-25 00:24:31,507 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 72 [2021-03-25 00:24:31,507 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 3813 transitions, 151805 flow. Second operand has 6 states, 6 states have (on average 37.5) internal successors, (225), 6 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:24:31,507 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:24:31,507 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 72 [2021-03-25 00:24:31,507 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:25:17,811 INFO L129 PetriNetUnfolder]: 27137/45695 cut-off events. [2021-03-25 00:25:17,811 INFO L130 PetriNetUnfolder]: For 1688818/1694076 co-relation queries the response was YES. [2021-03-25 00:25:18,038 INFO L84 FinitePrefix]: Finished finitePrefix Result has 515741 conditions, 45695 events. 27137/45695 cut-off events. For 1688818/1694076 co-relation queries the response was YES. Maximal size of possible extension queue 4043. Compared 426607 event pairs, 3036 based on Foata normal form. 516/46191 useless extension candidates. Maximal degree in co-relation 514295. Up to 16335 conditions per place. [2021-03-25 00:25:18,277 INFO L132 encePairwiseOnDemand]: 59/72 looper letters, 305 selfloop transitions, 3562 changer transitions 0/3880 dead transitions. [2021-03-25 00:25:18,277 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 3880 transitions, 160537 flow [2021-03-25 00:25:18,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 00:25:18,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 00:25:18,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 271 transitions. [2021-03-25 00:25:18,278 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6273148148148148 [2021-03-25 00:25:18,278 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 271 transitions. [2021-03-25 00:25:18,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 271 transitions. [2021-03-25 00:25:18,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:25:18,278 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 271 transitions. [2021-03-25 00:25:18,279 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 45.166666666666664) internal successors, (271), 6 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:25:18,279 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 72.0) internal successors, (504), 7 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:25:18,279 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 72.0) internal successors, (504), 7 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:25:18,279 INFO L185 Difference]: Start difference. First operand has 138 places, 3813 transitions, 151805 flow. Second operand 6 states and 271 transitions. [2021-03-25 00:25:18,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 3880 transitions, 160537 flow [2021-03-25 00:25:26,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 3880 transitions, 160487 flow, removed 22 selfloop flow, removed 1 redundant places. [2021-03-25 00:25:26,533 INFO L241 Difference]: Finished difference. Result has 143 places, 3838 transitions, 161555 flow [2021-03-25 00:25:26,535 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=151755, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3813, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3537, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=161555, PETRI_PLACES=143, PETRI_TRANSITIONS=3838} [2021-03-25 00:25:26,535 INFO L343 CegarLoopForPetriNet]: 47 programPoint places, 96 predicate places. [2021-03-25 00:25:26,535 INFO L480 AbstractCegarLoop]: Abstraction has has 143 places, 3838 transitions, 161555 flow [2021-03-25 00:25:26,535 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 37.5) internal successors, (225), 6 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:25:26,535 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:25:26,535 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 00:25:26,536 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-03-25 00:25:26,536 INFO L428 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 00:25:26,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:25:26,536 INFO L82 PathProgramCache]: Analyzing trace with hash -1078546527, now seen corresponding path program 27 times [2021-03-25 00:25:26,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:25:26,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746914215] [2021-03-25 00:25:26,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:25:26,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:25:26,547 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:25:26,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:25:26,550 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:25:26,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:25:26,553 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:25:26,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:25:26,558 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:25:26,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:25:26,563 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:25:26,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:25:26,569 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:25:26,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:25:26,570 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:25:26,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:25:26,576 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:25:26,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:25:26,583 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:25:26,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:25:26,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:25:26,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746914215] [2021-03-25 00:25:26,584 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:25:26,584 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-25 00:25:26,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473968920] [2021-03-25 00:25:26,584 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-25 00:25:26,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:25:26,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-25 00:25:26,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-03-25 00:25:26,585 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 72 [2021-03-25 00:25:26,585 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 3838 transitions, 161555 flow. Second operand has 9 states, 9 states have (on average 36.666666666666664) internal successors, (330), 9 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:25:26,585 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:25:26,585 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 72 [2021-03-25 00:25:26,585 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:26:21,718 INFO L129 PetriNetUnfolder]: 28612/48392 cut-off events. [2021-03-25 00:26:21,718 INFO L130 PetriNetUnfolder]: For 1647034/1652405 co-relation queries the response was YES. [2021-03-25 00:26:21,971 INFO L84 FinitePrefix]: Finished finitePrefix Result has 590764 conditions, 48392 events. 28612/48392 cut-off events. For 1647034/1652405 co-relation queries the response was YES. Maximal size of possible extension queue 4452. Compared 457886 event pairs, 1941 based on Foata normal form. 1214/49587 useless extension candidates. Maximal degree in co-relation 589448. Up to 17790 conditions per place. [2021-03-25 00:26:22,227 INFO L132 encePairwiseOnDemand]: 58/72 looper letters, 195 selfloop transitions, 4312 changer transitions 5/4525 dead transitions. [2021-03-25 00:26:22,228 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 4525 transitions, 198929 flow [2021-03-25 00:26:22,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-25 00:26:22,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-25 00:26:22,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 462 transitions. [2021-03-25 00:26:22,235 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6416666666666667 [2021-03-25 00:26:22,235 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 462 transitions. [2021-03-25 00:26:22,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 462 transitions. [2021-03-25 00:26:22,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:26:22,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 462 transitions. [2021-03-25 00:26:22,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 46.2) internal successors, (462), 10 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:26:22,236 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 72.0) internal successors, (792), 11 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:26:22,236 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 72.0) internal successors, (792), 11 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:26:22,236 INFO L185 Difference]: Start difference. First operand has 143 places, 3838 transitions, 161555 flow. Second operand 10 states and 462 transitions. [2021-03-25 00:26:22,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 4525 transitions, 198929 flow [2021-03-25 00:26:32,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 4525 transitions, 194568 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-25 00:26:32,233 INFO L241 Difference]: Finished difference. Result has 152 places, 4489 transitions, 196917 flow [2021-03-25 00:26:32,235 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=157844, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3838, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3661, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=196917, PETRI_PLACES=152, PETRI_TRANSITIONS=4489} [2021-03-25 00:26:32,236 INFO L343 CegarLoopForPetriNet]: 47 programPoint places, 105 predicate places. [2021-03-25 00:26:32,236 INFO L480 AbstractCegarLoop]: Abstraction has has 152 places, 4489 transitions, 196917 flow [2021-03-25 00:26:32,236 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 36.666666666666664) internal successors, (330), 9 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:26:32,236 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:26:32,236 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] [2021-03-25 00:26:32,236 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-03-25 00:26:32,236 INFO L428 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 00:26:32,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:26:32,236 INFO L82 PathProgramCache]: Analyzing trace with hash -951913285, now seen corresponding path program 28 times [2021-03-25 00:26:32,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:26:32,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353767118] [2021-03-25 00:26:32,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:26:32,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:26:32,262 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:26:32,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:26:32,264 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:26:32,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:26:32,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:26:32,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 00:26:32,272 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:26:32,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:26:32,273 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:26:32,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 00:26:32,273 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:26:32,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:26:32,274 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:26:32,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 00:26:32,274 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:26:32,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:26:32,275 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:26:32,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 00:26:32,275 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:26:32,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:26:32,276 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:26:32,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:26:32,280 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:26:32,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:26:32,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:26:32,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353767118] [2021-03-25 00:26:32,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:26:32,281 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 00:26:32,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123535008] [2021-03-25 00:26:32,281 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 00:26:32,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:26:32,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 00:26:32,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-03-25 00:26:32,282 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 72 [2021-03-25 00:26:32,282 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 4489 transitions, 196917 flow. Second operand has 6 states, 6 states have (on average 37.5) internal successors, (225), 6 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:26:32,282 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:26:32,283 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 72 [2021-03-25 00:26:32,283 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:27:39,497 INFO L129 PetriNetUnfolder]: 28898/49147 cut-off events. [2021-03-25 00:27:39,497 INFO L130 PetriNetUnfolder]: For 2230748/2237873 co-relation queries the response was YES. [2021-03-25 00:27:39,800 INFO L84 FinitePrefix]: Finished finitePrefix Result has 622835 conditions, 49147 events. 28898/49147 cut-off events. For 2230748/2237873 co-relation queries the response was YES. Maximal size of possible extension queue 4533. Compared 470171 event pairs, 3344 based on Foata normal form. 630/49758 useless extension candidates. Maximal degree in co-relation 621380. Up to 17953 conditions per place. [2021-03-25 00:27:40,069 INFO L132 encePairwiseOnDemand]: 59/72 looper letters, 360 selfloop transitions, 4201 changer transitions 0/4574 dead transitions. [2021-03-25 00:27:40,069 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 4574 transitions, 207459 flow [2021-03-25 00:27:40,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 00:27:40,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 00:27:40,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 271 transitions. [2021-03-25 00:27:40,070 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6273148148148148 [2021-03-25 00:27:40,070 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 271 transitions. [2021-03-25 00:27:40,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 271 transitions. [2021-03-25 00:27:40,070 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:27:40,070 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 271 transitions. [2021-03-25 00:27:40,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 45.166666666666664) internal successors, (271), 6 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:27:40,071 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 72.0) internal successors, (504), 7 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:27:40,071 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 72.0) internal successors, (504), 7 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:27:40,071 INFO L185 Difference]: Start difference. First operand has 152 places, 4489 transitions, 196917 flow. Second operand 6 states and 271 transitions. [2021-03-25 00:27:40,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 4574 transitions, 207459 flow [2021-03-25 00:27:53,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 4574 transitions, 202593 flow, removed 339 selfloop flow, removed 3 redundant places. [2021-03-25 00:27:54,149 INFO L241 Difference]: Finished difference. Result has 155 places, 4530 transitions, 203975 flow [2021-03-25 00:27:54,153 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=192069, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4489, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=203975, PETRI_PLACES=155, PETRI_TRANSITIONS=4530} [2021-03-25 00:27:54,153 INFO L343 CegarLoopForPetriNet]: 47 programPoint places, 108 predicate places. [2021-03-25 00:27:54,153 INFO L480 AbstractCegarLoop]: Abstraction has has 155 places, 4530 transitions, 203975 flow [2021-03-25 00:27:54,153 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 37.5) internal successors, (225), 6 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:27:54,153 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:27:54,153 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] [2021-03-25 00:27:54,153 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-03-25 00:27:54,154 INFO L428 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 00:27:54,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:27:54,154 INFO L82 PathProgramCache]: Analyzing trace with hash 105794995, now seen corresponding path program 29 times [2021-03-25 00:27:54,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:27:54,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352647350] [2021-03-25 00:27:54,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:27:54,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:27:54,165 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:27:54,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:27:54,168 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:27:54,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:27:54,171 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:27:54,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 00:27:54,175 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:27:54,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:27:54,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:27:54,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 00:27:54,177 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:27:54,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:27:54,177 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:27:54,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 00:27:54,178 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:27:54,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:27:54,178 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:27:54,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 00:27:54,179 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:27:54,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:27:54,179 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:27:54,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:27:54,184 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:27:54,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:27:54,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:27:54,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352647350] [2021-03-25 00:27:54,185 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:27:54,185 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 00:27:54,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038534284] [2021-03-25 00:27:54,185 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 00:27:54,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:27:54,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 00:27:54,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-03-25 00:27:54,186 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 72 [2021-03-25 00:27:54,186 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 4530 transitions, 203975 flow. Second operand has 6 states, 6 states have (on average 37.5) internal successors, (225), 6 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:27:54,186 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:27:54,186 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 72 [2021-03-25 00:27:54,186 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:29:04,720 INFO L129 PetriNetUnfolder]: 28410/48538 cut-off events. [2021-03-25 00:29:04,720 INFO L130 PetriNetUnfolder]: For 2372479/2379641 co-relation queries the response was YES. [2021-03-25 00:29:05,045 INFO L84 FinitePrefix]: Finished finitePrefix Result has 639665 conditions, 48538 events. 28410/48538 cut-off events. For 2372479/2379641 co-relation queries the response was YES. Maximal size of possible extension queue 4525. Compared 466918 event pairs, 3529 based on Foata normal form. 541/49061 useless extension candidates. Maximal degree in co-relation 638272. Up to 17163 conditions per place. [2021-03-25 00:29:05,328 INFO L132 encePairwiseOnDemand]: 58/72 looper letters, 362 selfloop transitions, 4224 changer transitions 0/4599 dead transitions. [2021-03-25 00:29:05,329 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 4599 transitions, 214392 flow [2021-03-25 00:29:05,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 00:29:05,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 00:29:05,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 270 transitions. [2021-03-25 00:29:05,331 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.625 [2021-03-25 00:29:05,331 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 270 transitions. [2021-03-25 00:29:05,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 270 transitions. [2021-03-25 00:29:05,331 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:29:05,331 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 270 transitions. [2021-03-25 00:29:05,331 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 45.0) internal successors, (270), 6 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:29:05,332 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 72.0) internal successors, (504), 7 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:29:05,332 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 72.0) internal successors, (504), 7 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:29:05,332 INFO L185 Difference]: Start difference. First operand has 155 places, 4530 transitions, 203975 flow. Second operand 6 states and 270 transitions. [2021-03-25 00:29:05,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 4599 transitions, 214392 flow [2021-03-25 00:29:17,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 4599 transitions, 209969 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-25 00:29:17,182 INFO L241 Difference]: Finished difference. Result has 159 places, 4560 transitions, 212543 flow [2021-03-25 00:29:17,185 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=199580, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4530, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4194, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=212543, PETRI_PLACES=159, PETRI_TRANSITIONS=4560} [2021-03-25 00:29:17,186 INFO L343 CegarLoopForPetriNet]: 47 programPoint places, 112 predicate places. [2021-03-25 00:29:17,186 INFO L480 AbstractCegarLoop]: Abstraction has has 159 places, 4560 transitions, 212543 flow [2021-03-25 00:29:17,186 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 37.5) internal successors, (225), 6 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:29:17,186 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:29:17,186 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] [2021-03-25 00:29:17,186 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-03-25 00:29:17,186 INFO L428 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 00:29:17,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:29:17,187 INFO L82 PathProgramCache]: Analyzing trace with hash 1520794337, now seen corresponding path program 30 times [2021-03-25 00:29:17,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:29:17,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229552377] [2021-03-25 00:29:17,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:29:17,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:29:17,197 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:29:17,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:29:17,200 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:29:17,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:29:17,204 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:29:17,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:29:17,208 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:29:17,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:29:17,209 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:29:17,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:29:17,209 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:29:17,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:29:17,210 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:29:17,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:29:17,210 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:29:17,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:29:17,215 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:29:17,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:29:17,221 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:29:17,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:29:17,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:29:17,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229552377] [2021-03-25 00:29:17,221 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:29:17,221 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-25 00:29:17,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809021792] [2021-03-25 00:29:17,222 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-25 00:29:17,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:29:17,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-25 00:29:17,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-03-25 00:29:17,222 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 72 [2021-03-25 00:29:17,223 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 4560 transitions, 212543 flow. Second operand has 7 states, 7 states have (on average 37.142857142857146) internal successors, (260), 7 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:29:17,223 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:29:17,223 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 72 [2021-03-25 00:29:17,223 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:30:27,649 INFO L129 PetriNetUnfolder]: 25895/45172 cut-off events. [2021-03-25 00:30:27,649 INFO L130 PetriNetUnfolder]: For 2053094/2064367 co-relation queries the response was YES. [2021-03-25 00:30:27,957 INFO L84 FinitePrefix]: Finished finitePrefix Result has 622796 conditions, 45172 events. 25895/45172 cut-off events. For 2053094/2064367 co-relation queries the response was YES. Maximal size of possible extension queue 4345. Compared 441084 event pairs, 2492 based on Foata normal form. 1544/46688 useless extension candidates. Maximal degree in co-relation 621550. Up to 22261 conditions per place. [2021-03-25 00:30:28,399 INFO L132 encePairwiseOnDemand]: 58/72 looper letters, 518 selfloop transitions, 4382 changer transitions 1/4914 dead transitions. [2021-03-25 00:30:28,399 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 4914 transitions, 237308 flow [2021-03-25 00:30:28,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-25 00:30:28,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-25 00:30:28,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 363 transitions. [2021-03-25 00:30:28,400 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6302083333333334 [2021-03-25 00:30:28,400 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 363 transitions. [2021-03-25 00:30:28,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 363 transitions. [2021-03-25 00:30:28,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:30:28,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 363 transitions. [2021-03-25 00:30:28,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 45.375) internal successors, (363), 8 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:30:28,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 72.0) internal successors, (648), 9 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:30:28,404 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 72.0) internal successors, (648), 9 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:30:28,404 INFO L185 Difference]: Start difference. First operand has 159 places, 4560 transitions, 212543 flow. Second operand 8 states and 363 transitions. [2021-03-25 00:30:28,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 4914 transitions, 237308 flow [2021-03-25 00:30:41,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 4914 transitions, 232458 flow, removed 28 selfloop flow, removed 3 redundant places. [2021-03-25 00:30:41,274 INFO L241 Difference]: Finished difference. Result has 165 places, 4862 transitions, 233296 flow [2021-03-25 00:30:41,277 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=198737, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3885, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=480, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=233296, PETRI_PLACES=165, PETRI_TRANSITIONS=4862} [2021-03-25 00:30:41,278 INFO L343 CegarLoopForPetriNet]: 47 programPoint places, 118 predicate places. [2021-03-25 00:30:41,278 INFO L480 AbstractCegarLoop]: Abstraction has has 165 places, 4862 transitions, 233296 flow [2021-03-25 00:30:41,278 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 37.142857142857146) internal successors, (260), 7 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:30:41,278 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:30:41,278 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] [2021-03-25 00:30:41,278 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-03-25 00:30:41,278 INFO L428 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 00:30:41,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:30:41,279 INFO L82 PathProgramCache]: Analyzing trace with hash 1047896341, now seen corresponding path program 31 times [2021-03-25 00:30:41,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:30:41,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242118305] [2021-03-25 00:30:41,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:30:41,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:30:41,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:30:41,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:30:41,291 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:30:41,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:30:41,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:30:41,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:30:41,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:30:41,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:30:41,303 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:30:41,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:30:41,303 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:30:41,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:30:41,308 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:30:41,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:30:41,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:30:41,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:30:41,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:30:41,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242118305] [2021-03-25 00:30:41,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:30:41,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-25 00:30:41,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251079233] [2021-03-25 00:30:41,315 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-25 00:30:41,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:30:41,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-25 00:30:41,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-03-25 00:30:41,316 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 72 [2021-03-25 00:30:41,316 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 4862 transitions, 233296 flow. Second operand has 8 states, 8 states have (on average 36.875) internal successors, (295), 8 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:30:41,316 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:30:41,316 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 72 [2021-03-25 00:30:41,317 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:32:02,185 INFO L129 PetriNetUnfolder]: 26515/46555 cut-off events. [2021-03-25 00:32:02,185 INFO L130 PetriNetUnfolder]: For 2176360/2181664 co-relation queries the response was YES. [2021-03-25 00:32:02,524 INFO L84 FinitePrefix]: Finished finitePrefix Result has 654236 conditions, 46555 events. 26515/46555 cut-off events. For 2176360/2181664 co-relation queries the response was YES. Maximal size of possible extension queue 4593. Compared 460538 event pairs, 1914 based on Foata normal form. 967/47506 useless extension candidates. Maximal degree in co-relation 652967. Up to 17183 conditions per place. [2021-03-25 00:32:02,792 INFO L132 encePairwiseOnDemand]: 58/72 looper letters, 377 selfloop transitions, 4855 changer transitions 10/5255 dead transitions. [2021-03-25 00:32:02,792 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 5255 transitions, 257017 flow [2021-03-25 00:32:02,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-25 00:32:02,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-25 00:32:02,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 413 transitions. [2021-03-25 00:32:02,793 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6373456790123457 [2021-03-25 00:32:02,793 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 413 transitions. [2021-03-25 00:32:02,793 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 413 transitions. [2021-03-25 00:32:02,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:32:02,794 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 413 transitions. [2021-03-25 00:32:02,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 45.888888888888886) internal successors, (413), 9 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:32:02,795 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 72.0) internal successors, (720), 10 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:32:02,795 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 72.0) internal successors, (720), 10 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:32:02,795 INFO L185 Difference]: Start difference. First operand has 165 places, 4862 transitions, 233296 flow. Second operand 9 states and 413 transitions. [2021-03-25 00:32:02,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 5255 transitions, 257017 flow [2021-03-25 00:32:20,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 5255 transitions, 255778 flow, removed 457 selfloop flow, removed 2 redundant places. [2021-03-25 00:32:20,995 INFO L241 Difference]: Finished difference. Result has 174 places, 5178 transitions, 257559 flow [2021-03-25 00:32:20,999 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=232108, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4862, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4532, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=257559, PETRI_PLACES=174, PETRI_TRANSITIONS=5178} [2021-03-25 00:32:20,999 INFO L343 CegarLoopForPetriNet]: 47 programPoint places, 127 predicate places. [2021-03-25 00:32:20,999 INFO L480 AbstractCegarLoop]: Abstraction has has 174 places, 5178 transitions, 257559 flow [2021-03-25 00:32:20,999 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 36.875) internal successors, (295), 8 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:32:20,999 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:32:20,999 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] [2021-03-25 00:32:20,999 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-03-25 00:32:20,999 INFO L428 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 00:32:21,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:32:21,000 INFO L82 PathProgramCache]: Analyzing trace with hash 1750608657, now seen corresponding path program 32 times [2021-03-25 00:32:21,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:32:21,000 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724086051] [2021-03-25 00:32:21,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:32:21,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:32:21,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:32:21,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:32:21,012 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:32:21,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:32:21,016 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:32:21,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:32:21,020 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:32:21,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:32:21,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:32:21,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:32:21,031 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:32:21,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:32:21,038 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:32:21,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:32:21,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:32:21,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:32:21,051 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:32:21,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:32:21,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:32:21,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:32:21,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:32:21,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724086051] [2021-03-25 00:32:21,059 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:32:21,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-25 00:32:21,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805486029] [2021-03-25 00:32:21,059 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-25 00:32:21,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:32:21,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-25 00:32:21,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-03-25 00:32:21,060 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 72 [2021-03-25 00:32:21,061 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 5178 transitions, 257559 flow. Second operand has 11 states, 11 states have (on average 36.36363636363637) internal successors, (400), 11 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:32:21,061 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:32:21,061 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 72 [2021-03-25 00:32:21,061 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2021-03-25 00:32:30,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-03-25 00:32:30,743 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-03-25 00:32:30,743 WARN L545 AbstractCegarLoop]: Verification canceled [2021-03-25 00:32:30,745 WARN L224 ceAbstractionStarter]: Timeout [2021-03-25 00:32:30,745 INFO L202 PluginConnector]: Adding new model ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 12:32:30 BasicIcfg [2021-03-25 00:32:30,745 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 00:32:30,746 INFO L168 Benchmark]: Toolchain (without parser) took 830295.98 ms. Allocated memory was 255.9 MB in the beginning and 13.4 GB in the end (delta: 13.1 GB). Free memory was 236.3 MB in the beginning and 6.5 GB in the end (delta: -6.3 GB). Peak memory consumption was 6.8 GB. Max. memory is 16.0 GB. [2021-03-25 00:32:30,746 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.78 ms. Allocated memory is still 255.9 MB. Free memory was 237.6 MB in the beginning and 237.5 MB in the end (delta: 178.2 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 00:32:30,746 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.31 ms. Allocated memory is still 255.9 MB. Free memory was 236.3 MB in the beginning and 234.9 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 00:32:30,746 INFO L168 Benchmark]: Boogie Preprocessor took 23.74 ms. Allocated memory is still 255.9 MB. Free memory was 234.8 MB in the beginning and 233.8 MB in the end (delta: 952.0 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 00:32:30,747 INFO L168 Benchmark]: RCFGBuilder took 259.31 ms. Allocated memory is still 255.9 MB. Free memory was 233.6 MB in the beginning and 233.5 MB in the end (delta: 90.0 kB). Peak memory consumption was 18.2 MB. Max. memory is 16.0 GB. [2021-03-25 00:32:30,747 INFO L168 Benchmark]: TraceAbstraction took 829988.75 ms. Allocated memory was 255.9 MB in the beginning and 13.4 GB in the end (delta: 13.1 GB). Free memory was 233.4 MB in the beginning and 6.5 GB in the end (delta: -6.3 GB). Peak memory consumption was 6.8 GB. Max. memory is 16.0 GB. [2021-03-25 00:32:30,747 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.78 ms. Allocated memory is still 255.9 MB. Free memory was 237.6 MB in the beginning and 237.5 MB in the end (delta: 178.2 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 20.31 ms. Allocated memory is still 255.9 MB. Free memory was 236.3 MB in the beginning and 234.9 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 23.74 ms. Allocated memory is still 255.9 MB. Free memory was 234.8 MB in the beginning and 233.8 MB in the end (delta: 952.0 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 259.31 ms. Allocated memory is still 255.9 MB. Free memory was 233.6 MB in the beginning and 233.5 MB in the end (delta: 90.0 kB). Peak memory consumption was 18.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 829988.75 ms. Allocated memory was 255.9 MB in the beginning and 13.4 GB in the end (delta: 13.1 GB). Free memory was 233.4 MB in the beginning and 6.5 GB in the end (delta: -6.3 GB). Peak memory consumption was 6.8 GB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1298.5ms, 65 PlacesBefore, 47 PlacesAfterwards, 46 TransitionsBefore, 28 TransitionsAfterwards, 1110 CoEnabledTransitionPairs, 3 FixpointIterations, 1 TrivialSequentialCompositions, 17 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 18 TotalNumberOfCompositions, 1234 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 586, positive: 552, positive conditional: 0, positive unconditional: 552, negative: 34, negative conditional: 0, negative unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 531, positive: 503, positive conditional: 0, positive unconditional: 503, negative: 28, negative conditional: 0, negative unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 531, positive: 503, positive conditional: 0, positive unconditional: 503, negative: 28, negative conditional: 0, negative unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 531, positive: 413, positive conditional: 0, positive unconditional: 413, negative: 118, negative conditional: 0, negative unconditional: 118, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 118, positive: 90, positive conditional: 0, positive unconditional: 90, negative: 28, negative conditional: 0, negative unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 461, positive: 361, positive conditional: 0, positive unconditional: 361, negative: 100, negative conditional: 0, negative unconditional: 100, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 586, positive: 49, positive conditional: 0, positive unconditional: 49, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 531, unknown conditional: 0, unknown unconditional: 531] , Statistics on independence cache: Total cache size (in pairs): 24, Positive cache size: 12, Positive conditional cache size: 0, Positive unconditional cache size: 12, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12 - TimeoutResultAtElement [Line: 110]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 110). Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (11states, 35/72 universal loopers) in iteration 32,while PetriNetUnfolder was constructing finite prefix that currently has 55055 conditions, 3429 events (1599/3428 cut-off events. For 317259/323504 co-relation queries the response was YES. Maximal size of possible extension queue 2736. Compared 42482 event pairs, 124 based on Foata normal form. 199/6350 useless extension candidates. Maximal degree in co-relation 54987. Up to 1885 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 55 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 21.5ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: TIMEOUT, OverallTime: 829847.7ms, OverallIterations: 32, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 826737.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1382.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 82 SDtfs, 194 SDslu, 35 SDs, 0 SdLazy, 5955 SolverSat, 1005 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3156.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 300 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 830.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=257559occurred in iteration=31, InterpolantAutomatonStates: 204, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 39.7ms SsaConstructionTime, 222.4ms SatisfiabilityAnalysisTime, 1215.9ms InterpolantComputationTime, 896 NumberOfCodeBlocks, 896 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 864 ConstructedInterpolants, 0 QuantifiedInterpolants, 2343 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 32 InterpolantComputations, 32 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown