/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-RepeatedSemanticLbeWithPredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/mcr/example_14.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-26 03:39:42,650 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-26 03:39:42,652 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-26 03:39:42,668 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-26 03:39:42,669 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-26 03:39:42,669 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-26 03:39:42,670 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-26 03:39:42,671 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-26 03:39:42,672 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-26 03:39:42,673 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-26 03:39:42,674 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-26 03:39:42,674 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-26 03:39:42,675 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-26 03:39:42,675 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-26 03:39:42,676 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-26 03:39:42,676 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-26 03:39:42,677 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-26 03:39:42,677 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-26 03:39:42,678 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-26 03:39:42,680 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-26 03:39:42,680 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-26 03:39:42,681 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-26 03:39:42,682 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-26 03:39:42,682 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-26 03:39:42,684 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-26 03:39:42,689 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-26 03:39:42,689 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-26 03:39:42,690 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-26 03:39:42,690 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-RepeatedSemanticLbeWithPredicates.epf [2021-03-26 03:39:42,704 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-26 03:39:42,705 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-26 03:39:42,705 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-26 03:39:42,706 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-26 03:39:42,706 INFO L138 SettingsManager]: * Use SBE=true [2021-03-26 03:39:42,706 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-26 03:39:42,706 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-26 03:39:42,706 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-26 03:39:42,706 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-26 03:39:42,707 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-26 03:39:42,707 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-26 03:39:42,707 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-26 03:39:42,707 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-26 03:39:42,707 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-26 03:39:42,707 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-26 03:39:42,707 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-26 03:39:42,708 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-26 03:39:42,708 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-26 03:39:42,708 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-26 03:39:42,708 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-26 03:39:42,708 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-26 03:39:42,708 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-26 03:39:42,709 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-26 03:39:42,709 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-26 03:39:42,709 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-26 03:39:42,709 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-26 03:39:42,709 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-26 03:39:42,709 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES [2021-03-26 03:39:42,710 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-26 03:39:42,710 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-26 03:39:42,710 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-26 03:39:42,884 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-26 03:39:42,902 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-26 03:39:42,904 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-26 03:39:42,905 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-26 03:39:42,905 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-26 03:39:42,908 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_14.bpl [2021-03-26 03:39:42,909 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_14.bpl' [2021-03-26 03:39:42,947 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-26 03:39:42,948 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-26 03:39:42,949 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-26 03:39:42,949 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-26 03:39:42,949 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-26 03:39:42,957 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:39:42" (1/1) ... [2021-03-26 03:39:42,964 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:39:42" (1/1) ... [2021-03-26 03:39:42,969 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-26 03:39:42,970 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-26 03:39:42,970 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-26 03:39:42,971 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-26 03:39:42,976 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:39:42" (1/1) ... [2021-03-26 03:39:42,976 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:39:42" (1/1) ... [2021-03-26 03:39:42,977 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:39:42" (1/1) ... [2021-03-26 03:39:42,978 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:39:42" (1/1) ... [2021-03-26 03:39:42,981 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:39:42" (1/1) ... [2021-03-26 03:39:42,981 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:39:42" (1/1) ... [2021-03-26 03:39:42,982 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:39:42" (1/1) ... [2021-03-26 03:39:42,985 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-26 03:39:42,985 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-26 03:39:42,985 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-26 03:39:42,986 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-26 03:39:42,986 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:39:42" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-26 03:39:43,043 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2021-03-26 03:39:43,044 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2021-03-26 03:39:43,044 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2021-03-26 03:39:43,044 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2021-03-26 03:39:43,044 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2021-03-26 03:39:43,044 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2021-03-26 03:39:43,044 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2021-03-26 03:39:43,044 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2021-03-26 03:39:43,045 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2021-03-26 03:39:43,045 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2021-03-26 03:39:43,045 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2021-03-26 03:39:43,045 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2021-03-26 03:39:43,045 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2021-03-26 03:39:43,045 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2021-03-26 03:39:43,045 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2021-03-26 03:39:43,045 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_9 given in one single declaration [2021-03-26 03:39:43,046 INFO L130 BoogieDeclarations]: Found specification of procedure set_9 [2021-03-26 03:39:43,046 INFO L138 BoogieDeclarations]: Found implementation of procedure set_9 [2021-03-26 03:39:43,047 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-26 03:39:43,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-26 03:39:43,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-26 03:39:43,047 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_12 given in one single declaration [2021-03-26 03:39:43,047 INFO L130 BoogieDeclarations]: Found specification of procedure set_12 [2021-03-26 03:39:43,048 INFO L138 BoogieDeclarations]: Found implementation of procedure set_12 [2021-03-26 03:39:43,048 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_5 given in one single declaration [2021-03-26 03:39:43,048 INFO L130 BoogieDeclarations]: Found specification of procedure set_5 [2021-03-26 03:39:43,049 INFO L138 BoogieDeclarations]: Found implementation of procedure set_5 [2021-03-26 03:39:43,049 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_13 given in one single declaration [2021-03-26 03:39:43,049 INFO L130 BoogieDeclarations]: Found specification of procedure set_13 [2021-03-26 03:39:43,049 INFO L138 BoogieDeclarations]: Found implementation of procedure set_13 [2021-03-26 03:39:43,049 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_6 given in one single declaration [2021-03-26 03:39:43,049 INFO L130 BoogieDeclarations]: Found specification of procedure set_6 [2021-03-26 03:39:43,049 INFO L138 BoogieDeclarations]: Found implementation of procedure set_6 [2021-03-26 03:39:43,050 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_10 given in one single declaration [2021-03-26 03:39:43,050 INFO L130 BoogieDeclarations]: Found specification of procedure set_10 [2021-03-26 03:39:43,050 INFO L138 BoogieDeclarations]: Found implementation of procedure set_10 [2021-03-26 03:39:43,050 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_7 given in one single declaration [2021-03-26 03:39:43,051 INFO L130 BoogieDeclarations]: Found specification of procedure set_7 [2021-03-26 03:39:43,052 INFO L138 BoogieDeclarations]: Found implementation of procedure set_7 [2021-03-26 03:39:43,052 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_11 given in one single declaration [2021-03-26 03:39:43,052 INFO L130 BoogieDeclarations]: Found specification of procedure set_11 [2021-03-26 03:39:43,052 INFO L138 BoogieDeclarations]: Found implementation of procedure set_11 [2021-03-26 03:39:43,052 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_8 given in one single declaration [2021-03-26 03:39:43,052 INFO L130 BoogieDeclarations]: Found specification of procedure set_8 [2021-03-26 03:39:43,052 INFO L138 BoogieDeclarations]: Found implementation of procedure set_8 [2021-03-26 03:39:43,053 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-26 03:39:43,215 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-26 03:39:43,215 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-26 03:39:43,216 INFO L202 PluginConnector]: Adding new model example_14.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 03:39:43 BoogieIcfgContainer [2021-03-26 03:39:43,216 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-26 03:39:43,217 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-26 03:39:43,217 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-26 03:39:43,219 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-26 03:39:43,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:39:42" (1/2) ... [2021-03-26 03:39:43,219 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@498e9a21 and model type example_14.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.03 03:39:43, skipping insertion in model container [2021-03-26 03:39:43,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_14.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 03:39:43" (2/2) ... [2021-03-26 03:39:43,233 INFO L111 eAbstractionObserver]: Analyzing ICFG example_14.bpl [2021-03-26 03:39:43,236 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-26 03:39:43,238 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-26 03:39:43,239 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-26 03:39:43,425 INFO L149 ThreadInstanceAdder]: Constructed 196 joinOtherThreadTransitions. [2021-03-26 03:39:43,436 INFO L253 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2021-03-26 03:39:43,448 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:39:43,448 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:39:43,448 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:39:43,448 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:39:43,448 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:39:43,448 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:39:43,449 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:39:43,449 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:39:43,457 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 116 places, 255 transitions, 1168 flow [2021-03-26 03:39:50,002 INFO L129 PetriNetUnfolder]: 98305/114733 cut-off events. [2021-03-26 03:39:50,003 INFO L130 PetriNetUnfolder]: For 114688/114688 co-relation queries the response was YES. [2021-03-26 03:39:50,687 INFO L84 FinitePrefix]: Finished finitePrefix Result has 229464 conditions, 114733 events. 98305/114733 cut-off events. For 114688/114688 co-relation queries the response was YES. Maximal size of possible extension queue 3628. Compared 465637 event pairs, 0 based on Foata normal form. 0/114732 useless extension candidates. Maximal degree in co-relation 106563. Up to 24024 conditions per place. [2021-03-26 03:39:50,688 INFO L82 GeneralOperation]: Start removeDead. Operand has 116 places, 255 transitions, 1168 flow [2021-03-26 03:39:51,307 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 100 places, 239 transitions, 1108 flow [2021-03-26 03:39:51,308 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:39:51,316 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 100 places, 239 transitions, 1108 flow [2021-03-26 03:39:51,318 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 100 places, 239 transitions, 1108 flow [2021-03-26 03:39:51,319 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 100 places, 239 transitions, 1108 flow [2021-03-26 03:39:57,375 INFO L129 PetriNetUnfolder]: 98305/114731 cut-off events. [2021-03-26 03:39:57,376 INFO L130 PetriNetUnfolder]: For 114688/114688 co-relation queries the response was YES. [2021-03-26 03:39:57,950 INFO L84 FinitePrefix]: Finished finitePrefix Result has 229462 conditions, 114731 events. 98305/114731 cut-off events. For 114688/114688 co-relation queries the response was YES. Maximal size of possible extension queue 3628. Compared 480869 event pairs, 0 based on Foata normal form. 0/114731 useless extension candidates. Maximal degree in co-relation 106563. Up to 24024 conditions per place. [2021-03-26 03:39:59,438 INFO L142 LiptonReduction]: Number of co-enabled transitions 10556 [2021-03-26 03:39:59,846 INFO L154 LiptonReduction]: Checked pairs total: 2821 [2021-03-26 03:39:59,846 INFO L156 LiptonReduction]: Total number of compositions: 14 [2021-03-26 03:39:59,848 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 8541 [2021-03-26 03:40:04,988 INFO L129 PetriNetUnfolder]: 98305/114716 cut-off events. [2021-03-26 03:40:04,989 INFO L130 PetriNetUnfolder]: For 114688/114688 co-relation queries the response was YES. [2021-03-26 03:40:04,989 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:40:04,989 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:40:04,990 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-26 03:40:04,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:40:04,993 INFO L82 PathProgramCache]: Analyzing trace with hash 1070435327, now seen corresponding path program 1 times [2021-03-26 03:40:04,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:40:04,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692154561] [2021-03-26 03:40:04,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:40:05,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:40:05,074 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:40:05,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:40:05,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:40:05,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:40:05,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:40:05,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:40:05,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 03:40:05,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692154561] [2021-03-26 03:40:05,089 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:40:05,089 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 03:40:05,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582353102] [2021-03-26 03:40:05,094 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:40:05,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:40:05,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:40:05,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:40:05,103 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 269 [2021-03-26 03:40:05,106 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 225 transitions, 1080 flow. Second operand has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:40:05,106 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:40:05,106 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 269 [2021-03-26 03:40:05,107 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:40:11,440 INFO L129 PetriNetUnfolder]: 94418/110452 cut-off events. [2021-03-26 03:40:11,441 INFO L130 PetriNetUnfolder]: For 127186/127186 co-relation queries the response was YES. [2021-03-26 03:40:11,968 INFO L84 FinitePrefix]: Finished finitePrefix Result has 228734 conditions, 110452 events. 94418/110452 cut-off events. For 127186/127186 co-relation queries the response was YES. Maximal size of possible extension queue 3628. Compared 540288 event pairs, 0 based on Foata normal form. 378/110830 useless extension candidates. Maximal degree in co-relation 108761. Up to 24024 conditions per place. [2021-03-26 03:40:12,386 INFO L132 encePairwiseOnDemand]: 264/269 looper letters, 10 selfloop transitions, 1 changer transitions 0/221 dead transitions. [2021-03-26 03:40:12,386 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 221 transitions, 1082 flow [2021-03-26 03:40:12,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:40:12,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:40:12,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 777 transitions. [2021-03-26 03:40:12,397 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9628252788104089 [2021-03-26 03:40:12,397 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 777 transitions. [2021-03-26 03:40:12,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 777 transitions. [2021-03-26 03:40:12,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:40:12,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 777 transitions. [2021-03-26 03:40:12,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 259.0) internal successors, (777), 3 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:40:12,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:40:12,408 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:40:12,409 INFO L185 Difference]: Start difference. First operand has 86 places, 225 transitions, 1080 flow. Second operand 3 states and 777 transitions. [2021-03-26 03:40:12,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 221 transitions, 1082 flow [2021-03-26 03:40:13,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 221 transitions, 670 flow, removed 0 selfloop flow, removed 28 redundant places. [2021-03-26 03:40:13,270 INFO L241 Difference]: Finished difference. Result has 60 places, 221 transitions, 650 flow [2021-03-26 03:40:13,272 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=648, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=650, PETRI_PLACES=60, PETRI_TRANSITIONS=221} [2021-03-26 03:40:13,272 INFO L343 CegarLoopForPetriNet]: 86 programPoint places, -26 predicate places. [2021-03-26 03:40:13,272 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:40:13,272 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 60 places, 221 transitions, 650 flow [2021-03-26 03:40:13,273 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 60 places, 221 transitions, 650 flow [2021-03-26 03:40:13,273 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 60 places, 221 transitions, 650 flow [2021-03-26 03:40:16,587 INFO L129 PetriNetUnfolder]: 94418/110452 cut-off events. [2021-03-26 03:40:16,587 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:40:16,837 INFO L84 FinitePrefix]: Finished finitePrefix Result has 110469 conditions, 110452 events. 94418/110452 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3628. Compared 460144 event pairs, 0 based on Foata normal form. 0/110452 useless extension candidates. Maximal degree in co-relation 110456. Up to 24024 conditions per place. [2021-03-26 03:40:17,670 INFO L142 LiptonReduction]: Number of co-enabled transitions 4992 [2021-03-26 03:40:17,686 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:40:17,686 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:40:17,687 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 4415 [2021-03-26 03:40:17,688 INFO L480 AbstractCegarLoop]: Abstraction has has 60 places, 221 transitions, 650 flow [2021-03-26 03:40:17,689 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:40:17,689 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:40:17,689 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:40:17,689 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-26 03:40:17,689 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-26 03:40:17,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:40:17,690 INFO L82 PathProgramCache]: Analyzing trace with hash 69320485, now seen corresponding path program 1 times [2021-03-26 03:40:17,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:40:17,690 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604421485] [2021-03-26 03:40:17,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:40:17,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:40:17,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:40:17,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:40:17,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:40:17,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:40:17,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:40:17,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:40:17,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 03:40:17,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604421485] [2021-03-26 03:40:17,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:40:17,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 03:40:17,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638723415] [2021-03-26 03:40:17,712 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:40:17,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:40:17,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:40:17,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:40:17,713 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 269 [2021-03-26 03:40:17,714 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 221 transitions, 650 flow. Second operand has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:40:17,714 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:40:17,714 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 269 [2021-03-26 03:40:17,714 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:40:19,420 INFO L129 PetriNetUnfolder]: 43300/51599 cut-off events. [2021-03-26 03:40:19,421 INFO L130 PetriNetUnfolder]: For 7893/7893 co-relation queries the response was YES. [2021-03-26 03:40:19,509 INFO L84 FinitePrefix]: Finished finitePrefix Result has 51996 conditions, 51599 events. 43300/51599 cut-off events. For 7893/7893 co-relation queries the response was YES. Maximal size of possible extension queue 1912. Compared 251982 event pairs, 0 based on Foata normal form. 7515/59114 useless extension candidates. Maximal degree in co-relation 51982. Up to 12012 conditions per place. [2021-03-26 03:40:19,642 INFO L132 encePairwiseOnDemand]: 258/269 looper letters, 4 selfloop transitions, 1 changer transitions 0/211 dead transitions. [2021-03-26 03:40:19,642 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 211 transitions, 630 flow [2021-03-26 03:40:19,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:40:19,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:40:19,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 777 transitions. [2021-03-26 03:40:19,644 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9628252788104089 [2021-03-26 03:40:19,644 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 777 transitions. [2021-03-26 03:40:19,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 777 transitions. [2021-03-26 03:40:19,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:40:19,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 777 transitions. [2021-03-26 03:40:19,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 259.0) internal successors, (777), 3 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:40:19,647 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:40:19,647 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:40:19,648 INFO L185 Difference]: Start difference. First operand has 60 places, 221 transitions, 650 flow. Second operand 3 states and 777 transitions. [2021-03-26 03:40:19,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 211 transitions, 630 flow [2021-03-26 03:40:19,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 211 transitions, 629 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 03:40:19,656 INFO L241 Difference]: Finished difference. Result has 61 places, 211 transitions, 621 flow [2021-03-26 03:40:19,656 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=619, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=621, PETRI_PLACES=61, PETRI_TRANSITIONS=211} [2021-03-26 03:40:19,656 INFO L343 CegarLoopForPetriNet]: 86 programPoint places, -25 predicate places. [2021-03-26 03:40:19,656 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:40:19,657 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 211 transitions, 621 flow [2021-03-26 03:40:19,657 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 61 places, 211 transitions, 621 flow [2021-03-26 03:40:19,657 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 61 places, 211 transitions, 621 flow [2021-03-26 03:40:21,236 INFO L129 PetriNetUnfolder]: 43300/51599 cut-off events. [2021-03-26 03:40:21,236 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:40:21,331 INFO L84 FinitePrefix]: Finished finitePrefix Result has 51617 conditions, 51599 events. 43300/51599 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1912. Compared 214155 event pairs, 0 based on Foata normal form. 0/51599 useless extension candidates. Maximal degree in co-relation 51604. Up to 12012 conditions per place. [2021-03-26 03:40:21,555 INFO L142 LiptonReduction]: Number of co-enabled transitions 4732 [2021-03-26 03:40:21,566 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:40:21,567 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:40:21,567 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1911 [2021-03-26 03:40:21,568 INFO L480 AbstractCegarLoop]: Abstraction has has 61 places, 211 transitions, 621 flow [2021-03-26 03:40:21,569 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:40:21,569 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:40:21,569 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:40:21,569 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-26 03:40:21,569 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-26 03:40:21,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:40:21,570 INFO L82 PathProgramCache]: Analyzing trace with hash 222589655, now seen corresponding path program 1 times [2021-03-26 03:40:21,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:40:21,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447550614] [2021-03-26 03:40:21,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:40:21,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:40:21,586 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:40:21,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:40:21,586 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:40:21,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:40:21,589 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:40:21,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:40:21,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 03:40:21,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447550614] [2021-03-26 03:40:21,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:40:21,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 03:40:21,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375343014] [2021-03-26 03:40:21,590 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:40:21,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:40:21,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:40:21,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:40:21,591 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 269 [2021-03-26 03:40:21,592 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 211 transitions, 621 flow. Second operand has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:40:21,592 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:40:21,592 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 269 [2021-03-26 03:40:21,592 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:40:22,995 INFO L129 PetriNetUnfolder]: 37404/44976 cut-off events. [2021-03-26 03:40:22,995 INFO L130 PetriNetUnfolder]: For 3943/3943 co-relation queries the response was YES. [2021-03-26 03:40:23,094 INFO L84 FinitePrefix]: Finished finitePrefix Result has 48377 conditions, 44976 events. 37404/44976 cut-off events. For 3943/3943 co-relation queries the response was YES. Maximal size of possible extension queue 1912. Compared 220956 event pairs, 0 based on Foata normal form. 562/45538 useless extension candidates. Maximal degree in co-relation 48363. Up to 12012 conditions per place. [2021-03-26 03:40:23,368 INFO L132 encePairwiseOnDemand]: 263/269 looper letters, 9 selfloop transitions, 1 changer transitions 0/206 dead transitions. [2021-03-26 03:40:23,368 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 206 transitions, 626 flow [2021-03-26 03:40:23,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:40:23,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:40:23,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 777 transitions. [2021-03-26 03:40:23,370 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9628252788104089 [2021-03-26 03:40:23,370 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 777 transitions. [2021-03-26 03:40:23,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 777 transitions. [2021-03-26 03:40:23,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:40:23,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 777 transitions. [2021-03-26 03:40:23,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 259.0) internal successors, (777), 3 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:40:23,373 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:40:23,373 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:40:23,373 INFO L185 Difference]: Start difference. First operand has 61 places, 211 transitions, 621 flow. Second operand 3 states and 777 transitions. [2021-03-26 03:40:23,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 206 transitions, 626 flow [2021-03-26 03:40:23,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 206 transitions, 625 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 03:40:23,378 INFO L241 Difference]: Finished difference. Result has 62 places, 206 transitions, 607 flow [2021-03-26 03:40:23,378 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=605, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=607, PETRI_PLACES=62, PETRI_TRANSITIONS=206} [2021-03-26 03:40:23,378 INFO L343 CegarLoopForPetriNet]: 86 programPoint places, -24 predicate places. [2021-03-26 03:40:23,378 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:40:23,378 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 62 places, 206 transitions, 607 flow [2021-03-26 03:40:23,378 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 62 places, 206 transitions, 607 flow [2021-03-26 03:40:23,379 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 62 places, 206 transitions, 607 flow [2021-03-26 03:40:24,599 INFO L129 PetriNetUnfolder]: 37404/44976 cut-off events. [2021-03-26 03:40:24,599 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:40:24,677 INFO L84 FinitePrefix]: Finished finitePrefix Result has 44995 conditions, 44976 events. 37404/44976 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1912. Compared 192863 event pairs, 0 based on Foata normal form. 0/44976 useless extension candidates. Maximal degree in co-relation 44982. Up to 12012 conditions per place. [2021-03-26 03:40:24,892 INFO L142 LiptonReduction]: Number of co-enabled transitions 4602 [2021-03-26 03:40:24,902 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:40:24,902 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:40:24,903 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1525 [2021-03-26 03:40:24,904 INFO L480 AbstractCegarLoop]: Abstraction has has 62 places, 206 transitions, 607 flow [2021-03-26 03:40:24,904 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:40:24,904 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:40:24,904 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:40:24,904 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-26 03:40:24,904 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-26 03:40:24,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:40:24,905 INFO L82 PathProgramCache]: Analyzing trace with hash -909626815, now seen corresponding path program 1 times [2021-03-26 03:40:24,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:40:24,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916641478] [2021-03-26 03:40:24,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:40:24,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:40:24,928 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:40:24,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:40:24,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:40:24,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:40:24,933 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:40:24,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:40:24,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 03:40:24,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916641478] [2021-03-26 03:40:24,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:40:24,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 03:40:24,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110041905] [2021-03-26 03:40:24,935 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:40:24,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:40:24,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:40:24,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:40:24,936 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 269 [2021-03-26 03:40:24,937 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 206 transitions, 607 flow. Second operand has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:40:24,937 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:40:24,937 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 269 [2021-03-26 03:40:24,937 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:40:26,502 INFO L129 PetriNetUnfolder]: 36944/44460 cut-off events. [2021-03-26 03:40:26,502 INFO L130 PetriNetUnfolder]: For 3437/3437 co-relation queries the response was YES. [2021-03-26 03:40:26,602 INFO L84 FinitePrefix]: Finished finitePrefix Result has 47862 conditions, 44460 events. 36944/44460 cut-off events. For 3437/3437 co-relation queries the response was YES. Maximal size of possible extension queue 1912. Compared 221464 event pairs, 0 based on Foata normal form. 56/44516 useless extension candidates. Maximal degree in co-relation 47847. Up to 12012 conditions per place. [2021-03-26 03:40:26,713 INFO L132 encePairwiseOnDemand]: 265/269 looper letters, 11 selfloop transitions, 1 changer transitions 0/203 dead transitions. [2021-03-26 03:40:26,713 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 203 transitions, 622 flow [2021-03-26 03:40:26,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:40:26,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:40:26,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 777 transitions. [2021-03-26 03:40:26,715 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9628252788104089 [2021-03-26 03:40:26,715 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 777 transitions. [2021-03-26 03:40:26,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 777 transitions. [2021-03-26 03:40:26,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:40:26,715 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 777 transitions. [2021-03-26 03:40:26,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 259.0) internal successors, (777), 3 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:40:26,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:40:26,718 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:40:26,718 INFO L185 Difference]: Start difference. First operand has 62 places, 206 transitions, 607 flow. Second operand 3 states and 777 transitions. [2021-03-26 03:40:26,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 203 transitions, 622 flow [2021-03-26 03:40:26,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 203 transitions, 621 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 03:40:26,721 INFO L241 Difference]: Finished difference. Result has 63 places, 203 transitions, 599 flow [2021-03-26 03:40:26,722 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=597, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=599, PETRI_PLACES=63, PETRI_TRANSITIONS=203} [2021-03-26 03:40:26,722 INFO L343 CegarLoopForPetriNet]: 86 programPoint places, -23 predicate places. [2021-03-26 03:40:26,722 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:40:26,722 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 63 places, 203 transitions, 599 flow [2021-03-26 03:40:26,722 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 63 places, 203 transitions, 599 flow [2021-03-26 03:40:26,723 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 63 places, 203 transitions, 599 flow [2021-03-26 03:40:27,999 INFO L129 PetriNetUnfolder]: 36944/44460 cut-off events. [2021-03-26 03:40:27,999 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:40:28,146 INFO L84 FinitePrefix]: Finished finitePrefix Result has 44480 conditions, 44460 events. 36944/44460 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1951. Compared 190691 event pairs, 0 based on Foata normal form. 0/44460 useless extension candidates. Maximal degree in co-relation 44469. Up to 12012 conditions per place. [2021-03-26 03:40:28,547 INFO L142 LiptonReduction]: Number of co-enabled transitions 4524 [2021-03-26 03:40:28,557 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:40:28,557 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:40:28,557 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1835 [2021-03-26 03:40:28,561 INFO L480 AbstractCegarLoop]: Abstraction has has 63 places, 203 transitions, 599 flow [2021-03-26 03:40:28,561 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:40:28,561 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:40:28,561 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:40:28,561 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-26 03:40:28,561 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-26 03:40:28,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:40:28,562 INFO L82 PathProgramCache]: Analyzing trace with hash -1579367267, now seen corresponding path program 1 times [2021-03-26 03:40:28,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:40:28,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563707150] [2021-03-26 03:40:28,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:40:28,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:40:28,601 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:40:28,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:40:28,602 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:40:28,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:40:28,605 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:40:28,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:40:28,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 03:40:28,606 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563707150] [2021-03-26 03:40:28,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:40:28,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 03:40:28,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272226818] [2021-03-26 03:40:28,606 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:40:28,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:40:28,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:40:28,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:40:28,607 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 269 [2021-03-26 03:40:28,608 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 203 transitions, 599 flow. Second operand has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:40:28,608 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:40:28,608 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 269 [2021-03-26 03:40:28,608 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:40:29,229 INFO L129 PetriNetUnfolder]: 18413/22925 cut-off events. [2021-03-26 03:40:29,229 INFO L130 PetriNetUnfolder]: For 3391/3391 co-relation queries the response was YES. [2021-03-26 03:40:29,280 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23820 conditions, 22925 events. 18413/22925 cut-off events. For 3391/3391 co-relation queries the response was YES. Maximal size of possible extension queue 988. Compared 116085 event pairs, 0 based on Foata normal form. 2518/25443 useless extension candidates. Maximal degree in co-relation 23808. Up to 5544 conditions per place. [2021-03-26 03:40:29,481 INFO L132 encePairwiseOnDemand]: 260/269 looper letters, 6 selfloop transitions, 1 changer transitions 0/195 dead transitions. [2021-03-26 03:40:29,481 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 195 transitions, 589 flow [2021-03-26 03:40:29,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:40:29,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:40:29,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 777 transitions. [2021-03-26 03:40:29,483 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9628252788104089 [2021-03-26 03:40:29,483 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 777 transitions. [2021-03-26 03:40:29,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 777 transitions. [2021-03-26 03:40:29,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:40:29,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 777 transitions. [2021-03-26 03:40:29,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 259.0) internal successors, (777), 3 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:40:29,486 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:40:29,486 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:40:29,486 INFO L185 Difference]: Start difference. First operand has 63 places, 203 transitions, 599 flow. Second operand 3 states and 777 transitions. [2021-03-26 03:40:29,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 195 transitions, 589 flow [2021-03-26 03:40:29,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 195 transitions, 588 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 03:40:29,489 INFO L241 Difference]: Finished difference. Result has 64 places, 195 transitions, 576 flow [2021-03-26 03:40:29,490 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=574, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=576, PETRI_PLACES=64, PETRI_TRANSITIONS=195} [2021-03-26 03:40:29,490 INFO L343 CegarLoopForPetriNet]: 86 programPoint places, -22 predicate places. [2021-03-26 03:40:29,490 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:40:29,490 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 64 places, 195 transitions, 576 flow [2021-03-26 03:40:29,490 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 64 places, 195 transitions, 576 flow [2021-03-26 03:40:29,491 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 64 places, 195 transitions, 576 flow [2021-03-26 03:40:30,062 INFO L129 PetriNetUnfolder]: 18413/22925 cut-off events. [2021-03-26 03:40:30,063 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:40:30,132 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22946 conditions, 22925 events. 18413/22925 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1016. Compared 99985 event pairs, 0 based on Foata normal form. 0/22925 useless extension candidates. Maximal degree in co-relation 22935. Up to 5544 conditions per place. [2021-03-26 03:40:30,272 INFO L142 LiptonReduction]: Number of co-enabled transitions 4316 [2021-03-26 03:40:30,281 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:40:30,281 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:40:30,282 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 792 [2021-03-26 03:40:30,283 INFO L480 AbstractCegarLoop]: Abstraction has has 64 places, 195 transitions, 576 flow [2021-03-26 03:40:30,283 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:40:30,283 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:40:30,283 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:40:30,283 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-26 03:40:30,283 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-26 03:40:30,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:40:30,284 INFO L82 PathProgramCache]: Analyzing trace with hash 1559250705, now seen corresponding path program 1 times [2021-03-26 03:40:30,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:40:30,284 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398955198] [2021-03-26 03:40:30,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:40:30,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:40:30,301 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:40:30,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:40:30,302 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:40:30,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:40:30,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:40:30,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:40:30,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 03:40:30,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398955198] [2021-03-26 03:40:30,304 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:40:30,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 03:40:30,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167282792] [2021-03-26 03:40:30,305 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:40:30,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:40:30,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:40:30,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:40:30,308 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 269 [2021-03-26 03:40:30,308 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 195 transitions, 576 flow. Second operand has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:40:30,308 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:40:30,308 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 269 [2021-03-26 03:40:30,308 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:40:30,981 INFO L129 PetriNetUnfolder]: 18349/22852 cut-off events. [2021-03-26 03:40:30,981 INFO L130 PetriNetUnfolder]: For 1806/1806 co-relation queries the response was YES. [2021-03-26 03:40:31,032 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24672 conditions, 22852 events. 18349/22852 cut-off events. For 1806/1806 co-relation queries the response was YES. Maximal size of possible extension queue 988. Compared 114949 event pairs, 0 based on Foata normal form. 9/22861 useless extension candidates. Maximal degree in co-relation 24659. Up to 5544 conditions per place. [2021-03-26 03:40:31,090 INFO L132 encePairwiseOnDemand]: 266/269 looper letters, 12 selfloop transitions, 1 changer transitions 0/193 dead transitions. [2021-03-26 03:40:31,090 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 193 transitions, 596 flow [2021-03-26 03:40:31,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:40:31,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:40:31,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 777 transitions. [2021-03-26 03:40:31,091 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9628252788104089 [2021-03-26 03:40:31,091 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 777 transitions. [2021-03-26 03:40:31,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 777 transitions. [2021-03-26 03:40:31,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:40:31,092 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 777 transitions. [2021-03-26 03:40:31,093 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 259.0) internal successors, (777), 3 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:40:31,094 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:40:31,094 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:40:31,094 INFO L185 Difference]: Start difference. First operand has 64 places, 195 transitions, 576 flow. Second operand 3 states and 777 transitions. [2021-03-26 03:40:31,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 193 transitions, 596 flow [2021-03-26 03:40:31,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 193 transitions, 595 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 03:40:31,097 INFO L241 Difference]: Finished difference. Result has 65 places, 193 transitions, 571 flow [2021-03-26 03:40:31,097 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=569, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=571, PETRI_PLACES=65, PETRI_TRANSITIONS=193} [2021-03-26 03:40:31,097 INFO L343 CegarLoopForPetriNet]: 86 programPoint places, -21 predicate places. [2021-03-26 03:40:31,097 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:40:31,098 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 65 places, 193 transitions, 571 flow [2021-03-26 03:40:31,098 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 65 places, 193 transitions, 571 flow [2021-03-26 03:40:31,098 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 65 places, 193 transitions, 571 flow [2021-03-26 03:40:31,673 INFO L129 PetriNetUnfolder]: 18349/22852 cut-off events. [2021-03-26 03:40:31,673 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:40:31,709 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22874 conditions, 22852 events. 18349/22852 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1017. Compared 99552 event pairs, 0 based on Foata normal form. 0/22852 useless extension candidates. Maximal degree in co-relation 22865. Up to 5544 conditions per place. [2021-03-26 03:40:31,810 INFO L142 LiptonReduction]: Number of co-enabled transitions 4264 [2021-03-26 03:40:31,818 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:40:31,818 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:40:31,819 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 722 [2021-03-26 03:40:31,819 INFO L480 AbstractCegarLoop]: Abstraction has has 65 places, 193 transitions, 571 flow [2021-03-26 03:40:31,820 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:40:31,820 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:40:31,820 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:40:31,820 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-26 03:40:31,820 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-26 03:40:31,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:40:31,820 INFO L82 PathProgramCache]: Analyzing trace with hash -1245926739, now seen corresponding path program 1 times [2021-03-26 03:40:31,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:40:31,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328984416] [2021-03-26 03:40:31,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:40:31,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:40:31,832 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:40:31,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:40:31,833 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:40:31,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:40:31,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:40:31,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:40:31,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 03:40:31,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328984416] [2021-03-26 03:40:31,835 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:40:31,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 03:40:31,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969625827] [2021-03-26 03:40:31,836 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:40:31,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:40:31,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:40:31,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:40:31,837 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 269 [2021-03-26 03:40:31,837 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 193 transitions, 571 flow. Second operand has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:40:31,837 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:40:31,837 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 269 [2021-03-26 03:40:31,837 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:40:32,328 INFO L129 PetriNetUnfolder]: 13596/17307 cut-off events. [2021-03-26 03:40:32,329 INFO L130 PetriNetUnfolder]: For 1798/1798 co-relation queries the response was YES. [2021-03-26 03:40:32,368 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18666 conditions, 17307 events. 13596/17307 cut-off events. For 1798/1798 co-relation queries the response was YES. Maximal size of possible extension queue 814. Compared 87272 event pairs, 0 based on Foata normal form. 463/17770 useless extension candidates. Maximal degree in co-relation 18656. Up to 3960 conditions per place. [2021-03-26 03:40:32,415 INFO L132 encePairwiseOnDemand]: 262/269 looper letters, 8 selfloop transitions, 1 changer transitions 0/187 dead transitions. [2021-03-26 03:40:32,415 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 187 transitions, 571 flow [2021-03-26 03:40:32,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:40:32,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:40:32,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 777 transitions. [2021-03-26 03:40:32,417 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9628252788104089 [2021-03-26 03:40:32,417 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 777 transitions. [2021-03-26 03:40:32,417 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 777 transitions. [2021-03-26 03:40:32,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:40:32,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 777 transitions. [2021-03-26 03:40:32,419 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 259.0) internal successors, (777), 3 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:40:32,420 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:40:32,420 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:40:32,420 INFO L185 Difference]: Start difference. First operand has 65 places, 193 transitions, 571 flow. Second operand 3 states and 777 transitions. [2021-03-26 03:40:32,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 187 transitions, 571 flow [2021-03-26 03:40:32,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 187 transitions, 570 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 03:40:32,423 INFO L241 Difference]: Finished difference. Result has 66 places, 187 transitions, 554 flow [2021-03-26 03:40:32,423 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=552, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=554, PETRI_PLACES=66, PETRI_TRANSITIONS=187} [2021-03-26 03:40:32,423 INFO L343 CegarLoopForPetriNet]: 86 programPoint places, -20 predicate places. [2021-03-26 03:40:32,423 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:40:32,423 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 66 places, 187 transitions, 554 flow [2021-03-26 03:40:32,424 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 66 places, 187 transitions, 554 flow [2021-03-26 03:40:32,424 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 66 places, 187 transitions, 554 flow [2021-03-26 03:40:32,852 INFO L129 PetriNetUnfolder]: 13596/17307 cut-off events. [2021-03-26 03:40:32,852 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:40:32,891 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17330 conditions, 17307 events. 13596/17307 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 837. Compared 76981 event pairs, 0 based on Foata normal form. 0/17307 useless extension candidates. Maximal degree in co-relation 17321. Up to 3960 conditions per place. [2021-03-26 03:40:32,994 INFO L142 LiptonReduction]: Number of co-enabled transitions 4108 [2021-03-26 03:40:33,002 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:40:33,002 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:40:33,002 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 579 [2021-03-26 03:40:33,003 INFO L480 AbstractCegarLoop]: Abstraction has has 66 places, 187 transitions, 554 flow [2021-03-26 03:40:33,003 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:40:33,003 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:40:33,004 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:40:33,004 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-26 03:40:33,004 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-26 03:40:33,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:40:33,004 INFO L82 PathProgramCache]: Analyzing trace with hash -1838825821, now seen corresponding path program 1 times [2021-03-26 03:40:33,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:40:33,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674993679] [2021-03-26 03:40:33,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:40:33,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:40:33,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:40:33,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:40:33,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:40:33,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:40:33,027 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:40:33,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:40:33,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 03:40:33,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674993679] [2021-03-26 03:40:33,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:40:33,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 03:40:33,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777955343] [2021-03-26 03:40:33,028 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:40:33,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:40:33,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:40:33,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:40:33,029 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 269 [2021-03-26 03:40:33,029 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 187 transitions, 554 flow. Second operand has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:40:33,029 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:40:33,029 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 269 [2021-03-26 03:40:33,029 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:40:33,187 INFO L129 PetriNetUnfolder]: 4157/5613 cut-off events. [2021-03-26 03:40:33,187 INFO L130 PetriNetUnfolder]: For 1336/1336 co-relation queries the response was YES. [2021-03-26 03:40:33,198 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5730 conditions, 5613 events. 4157/5613 cut-off events. For 1336/1336 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 26968 event pairs, 0 based on Foata normal form. 1244/6857 useless extension candidates. Maximal degree in co-relation 5720. Up to 1320 conditions per place. [2021-03-26 03:40:33,210 INFO L132 encePairwiseOnDemand]: 257/269 looper letters, 3 selfloop transitions, 1 changer transitions 0/176 dead transitions. [2021-03-26 03:40:33,210 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 176 transitions, 529 flow [2021-03-26 03:40:33,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:40:33,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:40:33,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 777 transitions. [2021-03-26 03:40:33,212 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9628252788104089 [2021-03-26 03:40:33,212 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 777 transitions. [2021-03-26 03:40:33,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 777 transitions. [2021-03-26 03:40:33,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:40:33,212 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 777 transitions. [2021-03-26 03:40:33,213 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 259.0) internal successors, (777), 3 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:40:33,214 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:40:33,214 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:40:33,214 INFO L185 Difference]: Start difference. First operand has 66 places, 187 transitions, 554 flow. Second operand 3 states and 777 transitions. [2021-03-26 03:40:33,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 176 transitions, 529 flow [2021-03-26 03:40:33,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 176 transitions, 528 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 03:40:33,217 INFO L241 Difference]: Finished difference. Result has 67 places, 176 transitions, 522 flow [2021-03-26 03:40:33,217 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=522, PETRI_PLACES=67, PETRI_TRANSITIONS=176} [2021-03-26 03:40:33,217 INFO L343 CegarLoopForPetriNet]: 86 programPoint places, -19 predicate places. [2021-03-26 03:40:33,217 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:40:33,217 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 67 places, 176 transitions, 522 flow [2021-03-26 03:40:33,217 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 67 places, 176 transitions, 522 flow [2021-03-26 03:40:33,218 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 67 places, 176 transitions, 522 flow [2021-03-26 03:40:33,347 INFO L129 PetriNetUnfolder]: 4157/5613 cut-off events. [2021-03-26 03:40:33,348 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:40:33,355 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5637 conditions, 5613 events. 4157/5613 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 24210 event pairs, 0 based on Foata normal form. 0/5613 useless extension candidates. Maximal degree in co-relation 5628. Up to 1320 conditions per place. [2021-03-26 03:40:33,381 INFO L142 LiptonReduction]: Number of co-enabled transitions 3822 [2021-03-26 03:40:33,389 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:40:33,389 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:40:33,389 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 172 [2021-03-26 03:40:33,389 INFO L480 AbstractCegarLoop]: Abstraction has has 67 places, 176 transitions, 522 flow [2021-03-26 03:40:33,390 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:40:33,390 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:40:33,390 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:40:33,390 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-26 03:40:33,390 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-26 03:40:33,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:40:33,390 INFO L82 PathProgramCache]: Analyzing trace with hash 1476202047, now seen corresponding path program 1 times [2021-03-26 03:40:33,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:40:33,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411134258] [2021-03-26 03:40:33,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:40:33,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:40:33,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:40:33,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:40:33,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:40:33,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:40:33,415 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:40:33,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:40:33,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 03:40:33,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411134258] [2021-03-26 03:40:33,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:40:33,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 03:40:33,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89350994] [2021-03-26 03:40:33,416 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:40:33,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:40:33,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:40:33,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:40:33,417 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 269 [2021-03-26 03:40:33,417 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 176 transitions, 522 flow. Second operand has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:40:33,417 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:40:33,417 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 269 [2021-03-26 03:40:33,417 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:40:33,475 INFO L129 PetriNetUnfolder]: 1042/1539 cut-off events. [2021-03-26 03:40:33,475 INFO L130 PetriNetUnfolder]: For 468/468 co-relation queries the response was YES. [2021-03-26 03:40:33,477 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1566 conditions, 1539 events. 1042/1539 cut-off events. For 468/468 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 7109 event pairs, 0 based on Foata normal form. 467/2006 useless extension candidates. Maximal degree in co-relation 1556. Up to 360 conditions per place. [2021-03-26 03:40:33,480 INFO L132 encePairwiseOnDemand]: 255/269 looper letters, 1 selfloop transitions, 1 changer transitions 0/150 dead transitions. [2021-03-26 03:40:33,480 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 150 transitions, 448 flow [2021-03-26 03:40:33,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:40:33,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:40:33,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 777 transitions. [2021-03-26 03:40:33,481 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9628252788104089 [2021-03-26 03:40:33,481 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 777 transitions. [2021-03-26 03:40:33,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 777 transitions. [2021-03-26 03:40:33,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:40:33,482 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 777 transitions. [2021-03-26 03:40:33,483 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 259.0) internal successors, (777), 3 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:40:33,484 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:40:33,484 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:40:33,484 INFO L185 Difference]: Start difference. First operand has 67 places, 176 transitions, 522 flow. Second operand 3 states and 777 transitions. [2021-03-26 03:40:33,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 150 transitions, 448 flow [2021-03-26 03:40:33,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 150 transitions, 447 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 03:40:33,486 INFO L241 Difference]: Finished difference. Result has 68 places, 150 transitions, 445 flow [2021-03-26 03:40:33,486 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=443, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=445, PETRI_PLACES=68, PETRI_TRANSITIONS=150} [2021-03-26 03:40:33,486 INFO L343 CegarLoopForPetriNet]: 86 programPoint places, -18 predicate places. [2021-03-26 03:40:33,487 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:40:33,487 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 68 places, 150 transitions, 445 flow [2021-03-26 03:40:33,487 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 68 places, 150 transitions, 445 flow [2021-03-26 03:40:33,487 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 68 places, 150 transitions, 445 flow [2021-03-26 03:40:33,524 INFO L129 PetriNetUnfolder]: 1042/1539 cut-off events. [2021-03-26 03:40:33,524 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:40:33,526 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1564 conditions, 1539 events. 1042/1539 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 6196 event pairs, 0 based on Foata normal form. 0/1539 useless extension candidates. Maximal degree in co-relation 1555. Up to 360 conditions per place. [2021-03-26 03:40:33,532 INFO L142 LiptonReduction]: Number of co-enabled transitions 2688 [2021-03-26 03:40:33,537 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:40:33,537 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:40:33,537 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 50 [2021-03-26 03:40:33,538 INFO L480 AbstractCegarLoop]: Abstraction has has 68 places, 150 transitions, 445 flow [2021-03-26 03:40:33,539 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:40:33,539 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:40:33,539 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:40:33,539 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-26 03:40:33,539 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-26 03:40:33,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:40:33,539 INFO L82 PathProgramCache]: Analyzing trace with hash 794448179, now seen corresponding path program 1 times [2021-03-26 03:40:33,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:40:33,539 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472908513] [2021-03-26 03:40:33,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:40:33,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:40:33,567 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:40:33,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:40:33,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:40:33,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:40:33,570 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:40:33,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:40:33,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 03:40:33,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472908513] [2021-03-26 03:40:33,571 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:40:33,571 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 03:40:33,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27103201] [2021-03-26 03:40:33,571 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:40:33,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:40:33,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:40:33,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:40:33,572 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 269 [2021-03-26 03:40:33,572 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 150 transitions, 445 flow. Second operand has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:40:33,572 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:40:33,573 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 269 [2021-03-26 03:40:33,573 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:40:33,603 INFO L129 PetriNetUnfolder]: 249/455 cut-off events. [2021-03-26 03:40:33,603 INFO L130 PetriNetUnfolder]: For 143/143 co-relation queries the response was YES. [2021-03-26 03:40:33,604 INFO L84 FinitePrefix]: Finished finitePrefix Result has 495 conditions, 455 events. 249/455 cut-off events. For 143/143 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1698 event pairs, 0 based on Foata normal form. 130/585 useless extension candidates. Maximal degree in co-relation 485. Up to 84 conditions per place. [2021-03-26 03:40:33,604 INFO L132 encePairwiseOnDemand]: 259/269 looper letters, 4 selfloop transitions, 1 changer transitions 0/141 dead transitions. [2021-03-26 03:40:33,604 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 141 transitions, 428 flow [2021-03-26 03:40:33,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:40:33,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:40:33,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 776 transitions. [2021-03-26 03:40:33,606 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9615861214374225 [2021-03-26 03:40:33,606 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 776 transitions. [2021-03-26 03:40:33,606 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 776 transitions. [2021-03-26 03:40:33,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:40:33,606 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 776 transitions. [2021-03-26 03:40:33,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 258.6666666666667) internal successors, (776), 3 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:40:33,608 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:40:33,608 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:40:33,608 INFO L185 Difference]: Start difference. First operand has 68 places, 150 transitions, 445 flow. Second operand 3 states and 776 transitions. [2021-03-26 03:40:33,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 141 transitions, 428 flow [2021-03-26 03:40:33,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 141 transitions, 427 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 03:40:33,632 INFO L241 Difference]: Finished difference. Result has 69 places, 141 transitions, 419 flow [2021-03-26 03:40:33,633 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=419, PETRI_PLACES=69, PETRI_TRANSITIONS=141} [2021-03-26 03:40:33,633 INFO L343 CegarLoopForPetriNet]: 86 programPoint places, -17 predicate places. [2021-03-26 03:40:33,633 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:40:33,633 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 141 transitions, 419 flow [2021-03-26 03:40:33,633 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 141 transitions, 419 flow [2021-03-26 03:40:33,634 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 69 places, 141 transitions, 419 flow [2021-03-26 03:40:33,647 INFO L129 PetriNetUnfolder]: 249/455 cut-off events. [2021-03-26 03:40:33,647 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:40:33,648 INFO L84 FinitePrefix]: Finished finitePrefix Result has 481 conditions, 455 events. 249/455 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1598 event pairs, 0 based on Foata normal form. 0/455 useless extension candidates. Maximal degree in co-relation 472. Up to 84 conditions per place. [2021-03-26 03:40:33,650 INFO L142 LiptonReduction]: Number of co-enabled transitions 2130 [2021-03-26 03:40:33,658 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:40:33,659 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:40:33,659 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 26 [2021-03-26 03:40:33,659 INFO L480 AbstractCegarLoop]: Abstraction has has 69 places, 141 transitions, 419 flow [2021-03-26 03:40:33,660 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:40:33,660 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:40:33,660 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:40:33,660 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-26 03:40:33,660 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-26 03:40:33,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:40:33,660 INFO L82 PathProgramCache]: Analyzing trace with hash -1456333061, now seen corresponding path program 1 times [2021-03-26 03:40:33,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:40:33,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719365839] [2021-03-26 03:40:33,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:40:33,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:40:33,687 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:40:33,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:40:33,687 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:40:33,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:40:33,693 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:40:33,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:40:33,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 03:40:33,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719365839] [2021-03-26 03:40:33,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:40:33,694 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 03:40:33,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068317387] [2021-03-26 03:40:33,694 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:40:33,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:40:33,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:40:33,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:40:33,695 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 269 [2021-03-26 03:40:33,695 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 141 transitions, 419 flow. Second operand has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:40:33,695 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:40:33,695 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 269 [2021-03-26 03:40:33,696 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:40:33,708 INFO L129 PetriNetUnfolder]: 30/102 cut-off events. [2021-03-26 03:40:33,708 INFO L130 PetriNetUnfolder]: For 42/42 co-relation queries the response was YES. [2021-03-26 03:40:33,708 INFO L84 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 102 events. 30/102 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 200 event pairs, 0 based on Foata normal form. 41/143 useless extension candidates. Maximal degree in co-relation 121. Up to 14 conditions per place. [2021-03-26 03:40:33,709 INFO L132 encePairwiseOnDemand]: 256/269 looper letters, 1 selfloop transitions, 1 changer transitions 0/79 dead transitions. [2021-03-26 03:40:33,709 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 79 transitions, 237 flow [2021-03-26 03:40:33,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:40:33,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:40:33,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 776 transitions. [2021-03-26 03:40:33,710 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9615861214374225 [2021-03-26 03:40:33,710 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 776 transitions. [2021-03-26 03:40:33,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 776 transitions. [2021-03-26 03:40:33,710 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:40:33,710 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 776 transitions. [2021-03-26 03:40:33,711 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 258.6666666666667) internal successors, (776), 3 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:40:33,712 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:40:33,712 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:40:33,712 INFO L185 Difference]: Start difference. First operand has 69 places, 141 transitions, 419 flow. Second operand 3 states and 776 transitions. [2021-03-26 03:40:33,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 79 transitions, 237 flow [2021-03-26 03:40:33,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 79 transitions, 236 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 03:40:33,713 INFO L241 Difference]: Finished difference. Result has 70 places, 79 transitions, 234 flow [2021-03-26 03:40:33,713 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=234, PETRI_PLACES=70, PETRI_TRANSITIONS=79} [2021-03-26 03:40:33,714 INFO L343 CegarLoopForPetriNet]: 86 programPoint places, -16 predicate places. [2021-03-26 03:40:33,714 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:40:33,714 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 70 places, 79 transitions, 234 flow [2021-03-26 03:40:33,714 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 70 places, 79 transitions, 234 flow [2021-03-26 03:40:33,714 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 70 places, 79 transitions, 234 flow [2021-03-26 03:40:33,718 INFO L129 PetriNetUnfolder]: 30/102 cut-off events. [2021-03-26 03:40:33,718 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:40:33,718 INFO L84 FinitePrefix]: Finished finitePrefix Result has 129 conditions, 102 events. 30/102 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 219 event pairs, 0 based on Foata normal form. 0/102 useless extension candidates. Maximal degree in co-relation 120. Up to 14 conditions per place. [2021-03-26 03:40:33,718 INFO L142 LiptonReduction]: Number of co-enabled transitions 1206 [2021-03-26 03:40:33,720 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:40:33,720 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:40:33,720 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 6 [2021-03-26 03:40:33,721 INFO L480 AbstractCegarLoop]: Abstraction has has 70 places, 79 transitions, 234 flow [2021-03-26 03:40:33,721 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:40:33,722 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:40:33,722 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:40:33,722 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-26 03:40:33,722 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-26 03:40:33,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:40:33,722 INFO L82 PathProgramCache]: Analyzing trace with hash 2123789327, now seen corresponding path program 1 times [2021-03-26 03:40:33,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:40:33,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563625220] [2021-03-26 03:40:33,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:40:33,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:40:33,742 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:40:33,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:40:33,743 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:40:33,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:40:33,745 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:40:33,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:40:33,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 03:40:33,745 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563625220] [2021-03-26 03:40:33,745 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:40:33,746 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 03:40:33,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558849168] [2021-03-26 03:40:33,746 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:40:33,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:40:33,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:40:33,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:40:33,747 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 269 [2021-03-26 03:40:33,747 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 79 transitions, 234 flow. Second operand has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:40:33,747 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:40:33,747 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 269 [2021-03-26 03:40:33,747 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:40:33,754 INFO L129 PetriNetUnfolder]: 1/45 cut-off events. [2021-03-26 03:40:33,754 INFO L130 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2021-03-26 03:40:33,754 INFO L84 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 45 events. 1/45 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 24 event pairs, 0 based on Foata normal form. 8/53 useless extension candidates. Maximal degree in co-relation 65. Up to 2 conditions per place. [2021-03-26 03:40:33,755 INFO L132 encePairwiseOnDemand]: 261/269 looper letters, 1 selfloop transitions, 1 changer transitions 0/45 dead transitions. [2021-03-26 03:40:33,755 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 45 transitions, 136 flow [2021-03-26 03:40:33,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:40:33,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:40:33,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 771 transitions. [2021-03-26 03:40:33,756 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9553903345724907 [2021-03-26 03:40:33,756 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 771 transitions. [2021-03-26 03:40:33,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 771 transitions. [2021-03-26 03:40:33,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:40:33,756 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 771 transitions. [2021-03-26 03:40:33,757 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 257.0) internal successors, (771), 3 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:40:33,758 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:40:33,758 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:40:33,758 INFO L185 Difference]: Start difference. First operand has 70 places, 79 transitions, 234 flow. Second operand 3 states and 771 transitions. [2021-03-26 03:40:33,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 45 transitions, 136 flow [2021-03-26 03:40:33,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 45 transitions, 135 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 03:40:33,759 INFO L241 Difference]: Finished difference. Result has 71 places, 45 transitions, 133 flow [2021-03-26 03:40:33,759 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=133, PETRI_PLACES=71, PETRI_TRANSITIONS=45} [2021-03-26 03:40:33,759 INFO L343 CegarLoopForPetriNet]: 86 programPoint places, -15 predicate places. [2021-03-26 03:40:33,759 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:40:33,759 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 71 places, 45 transitions, 133 flow [2021-03-26 03:40:33,759 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 71 places, 45 transitions, 133 flow [2021-03-26 03:40:33,759 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 71 places, 45 transitions, 133 flow [2021-03-26 03:40:33,761 INFO L129 PetriNetUnfolder]: 1/45 cut-off events. [2021-03-26 03:40:33,761 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:40:33,762 INFO L84 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 45 events. 1/45 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 30 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2021-03-26 03:40:33,762 INFO L142 LiptonReduction]: Number of co-enabled transitions 596 [2021-03-26 03:40:33,763 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:40:33,763 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:40:33,763 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 4 [2021-03-26 03:40:33,763 INFO L480 AbstractCegarLoop]: Abstraction has has 71 places, 45 transitions, 133 flow [2021-03-26 03:40:33,764 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:40:33,764 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:40:33,764 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:40:33,764 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-26 03:40:33,764 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-26 03:40:33,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:40:33,764 INFO L82 PathProgramCache]: Analyzing trace with hash -228577559, now seen corresponding path program 1 times [2021-03-26 03:40:33,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:40:33,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643325686] [2021-03-26 03:40:33,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:40:33,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:40:33,859 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:40:33,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:40:33,863 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:40:33,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 03:40:33,868 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:40:33,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 03:40:33,894 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-26 03:40:33,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-26 03:40:33,919 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-26 03:40:33,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-26 03:40:33,952 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-26 03:40:33,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-26 03:40:33,995 INFO L142 QuantifierPusher]: treesize reduction 27, result has 64.5 percent of original size [2021-03-26 03:40:33,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-26 03:40:34,037 INFO L142 QuantifierPusher]: treesize reduction 36, result has 61.3 percent of original size [2021-03-26 03:40:34,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-03-26 03:40:34,094 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-03-26 03:40:34,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-26 03:40:34,135 INFO L142 QuantifierPusher]: treesize reduction 63, result has 52.3 percent of original size [2021-03-26 03:40:34,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-03-26 03:40:34,182 INFO L142 QuantifierPusher]: treesize reduction 72, result has 51.7 percent of original size [2021-03-26 03:40:34,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-03-26 03:40:34,245 INFO L142 QuantifierPusher]: treesize reduction 81, result has 51.2 percent of original size [2021-03-26 03:40:34,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-03-26 03:40:34,321 INFO L142 QuantifierPusher]: treesize reduction 90, result has 50.8 percent of original size [2021-03-26 03:40:34,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 93 [2021-03-26 03:40:34,389 INFO L142 QuantifierPusher]: treesize reduction 108, result has 48.8 percent of original size [2021-03-26 03:40:34,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-03-26 03:40:34,476 INFO L142 QuantifierPusher]: treesize reduction 117, result has 47.3 percent of original size [2021-03-26 03:40:34,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-03-26 03:40:34,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 03:40:34,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643325686] [2021-03-26 03:40:34,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:40:34,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-26 03:40:34,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797586308] [2021-03-26 03:40:34,545 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-26 03:40:34,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:40:34,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-26 03:40:34,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2021-03-26 03:40:34,548 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 269 [2021-03-26 03:40:34,549 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 45 transitions, 133 flow. Second operand has 16 states, 16 states have (on average 239.9375) internal successors, (3839), 16 states have internal predecessors, (3839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:40:34,549 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:40:34,550 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 269 [2021-03-26 03:40:34,550 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:40:42,926 INFO L129 PetriNetUnfolder]: 135695/164069 cut-off events. [2021-03-26 03:40:42,926 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:40:44,377 INFO L84 FinitePrefix]: Finished finitePrefix Result has 323856 conditions, 164069 events. 135695/164069 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8255. Compared 848567 event pairs, 45057 based on Foata normal form. 1/162339 useless extension candidates. Maximal degree in co-relation 323846. Up to 57345 conditions per place. [2021-03-26 03:40:44,957 INFO L132 encePairwiseOnDemand]: 254/269 looper letters, 104 selfloop transitions, 14 changer transitions 0/148 dead transitions. [2021-03-26 03:40:44,958 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 148 transitions, 575 flow [2021-03-26 03:40:44,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-03-26 03:40:44,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-03-26 03:40:44,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3943 transitions. [2021-03-26 03:40:44,963 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9161245353159851 [2021-03-26 03:40:44,963 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3943 transitions. [2021-03-26 03:40:44,963 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3943 transitions. [2021-03-26 03:40:44,964 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:40:44,964 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3943 transitions. [2021-03-26 03:40:44,968 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 246.4375) internal successors, (3943), 16 states have internal predecessors, (3943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:40:44,972 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 269.0) internal successors, (4573), 17 states have internal predecessors, (4573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:40:44,973 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 269.0) internal successors, (4573), 17 states have internal predecessors, (4573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:40:44,973 INFO L185 Difference]: Start difference. First operand has 71 places, 45 transitions, 133 flow. Second operand 16 states and 3943 transitions. [2021-03-26 03:40:44,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 148 transitions, 575 flow [2021-03-26 03:40:44,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 148 transitions, 574 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 03:40:44,979 INFO L241 Difference]: Finished difference. Result has 99 places, 58 transitions, 241 flow [2021-03-26 03:40:44,979 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=241, PETRI_PLACES=99, PETRI_TRANSITIONS=58} [2021-03-26 03:40:44,979 INFO L343 CegarLoopForPetriNet]: 86 programPoint places, 13 predicate places. [2021-03-26 03:40:44,979 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:40:44,979 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 99 places, 58 transitions, 241 flow [2021-03-26 03:40:44,979 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 99 places, 58 transitions, 241 flow [2021-03-26 03:40:44,979 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 99 places, 58 transitions, 241 flow [2021-03-26 03:40:44,989 INFO L129 PetriNetUnfolder]: 4/204 cut-off events. [2021-03-26 03:40:44,989 INFO L130 PetriNetUnfolder]: For 27/27 co-relation queries the response was YES. [2021-03-26 03:40:44,990 INFO L84 FinitePrefix]: Finished finitePrefix Result has 324 conditions, 204 events. 4/204 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1073 event pairs, 0 based on Foata normal form. 0/181 useless extension candidates. Maximal degree in co-relation 301. Up to 14 conditions per place. [2021-03-26 03:40:44,991 INFO L142 LiptonReduction]: Number of co-enabled transitions 954 [2021-03-26 03:40:44,992 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:40:44,992 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:40:44,992 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 13 [2021-03-26 03:40:44,993 INFO L480 AbstractCegarLoop]: Abstraction has has 99 places, 58 transitions, 241 flow [2021-03-26 03:40:44,994 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 239.9375) internal successors, (3839), 16 states have internal predecessors, (3839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:40:44,994 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:40:44,994 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:40:44,994 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-03-26 03:40:44,994 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-26 03:40:44,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:40:44,994 INFO L82 PathProgramCache]: Analyzing trace with hash -1044902637, now seen corresponding path program 2 times [2021-03-26 03:40:44,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:40:44,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480579735] [2021-03-26 03:40:44,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:40:44,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:40:45,060 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:40:45,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:40:45,061 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:40:45,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 03:40:45,064 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:40:45,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 03:40:45,071 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-26 03:40:45,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 03:40:45,080 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-26 03:40:45,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 03:40:45,092 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-26 03:40:45,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 03:40:45,115 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-26 03:40:45,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-26 03:40:45,140 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-03-26 03:40:45,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-03-26 03:40:45,172 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-03-26 03:40:45,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-26 03:40:45,213 INFO L142 QuantifierPusher]: treesize reduction 63, result has 52.3 percent of original size [2021-03-26 03:40:45,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-03-26 03:40:45,255 INFO L142 QuantifierPusher]: treesize reduction 72, result has 51.7 percent of original size [2021-03-26 03:40:45,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-03-26 03:40:45,305 INFO L142 QuantifierPusher]: treesize reduction 81, result has 51.2 percent of original size [2021-03-26 03:40:45,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-03-26 03:40:45,367 INFO L142 QuantifierPusher]: treesize reduction 90, result has 50.8 percent of original size [2021-03-26 03:40:45,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 93 [2021-03-26 03:40:45,439 INFO L142 QuantifierPusher]: treesize reduction 99, result has 50.5 percent of original size [2021-03-26 03:40:45,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-03-26 03:40:45,520 INFO L142 QuantifierPusher]: treesize reduction 117, result has 47.3 percent of original size [2021-03-26 03:40:45,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-03-26 03:40:45,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 03:40:45,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480579735] [2021-03-26 03:40:45,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:40:45,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-26 03:40:45,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868246826] [2021-03-26 03:40:45,589 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-26 03:40:45,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:40:45,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-26 03:40:45,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2021-03-26 03:40:45,592 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 269 [2021-03-26 03:40:45,594 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 58 transitions, 241 flow. Second operand has 16 states, 16 states have (on average 239.9375) internal successors, (3839), 16 states have internal predecessors, (3839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:40:45,594 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:40:45,594 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 269 [2021-03-26 03:40:45,594 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:41:10,649 INFO L129 PetriNetUnfolder]: 190870/258422 cut-off events. [2021-03-26 03:41:10,649 INFO L130 PetriNetUnfolder]: For 264262/291710 co-relation queries the response was YES. [2021-03-26 03:41:12,942 INFO L84 FinitePrefix]: Finished finitePrefix Result has 713273 conditions, 258422 events. 190870/258422 cut-off events. For 264262/291710 co-relation queries the response was YES. Maximal size of possible extension queue 11446. Compared 1874062 event pairs, 61443 based on Foata normal form. 1/256723 useless extension candidates. Maximal degree in co-relation 713249. Up to 80013 conditions per place. [2021-03-26 03:41:13,830 INFO L132 encePairwiseOnDemand]: 254/269 looper letters, 146 selfloop transitions, 20 changer transitions 0/196 dead transitions. [2021-03-26 03:41:13,830 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 196 transitions, 1208 flow [2021-03-26 03:41:13,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-03-26 03:41:13,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-03-26 03:41:13,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3943 transitions. [2021-03-26 03:41:13,834 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9161245353159851 [2021-03-26 03:41:13,834 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3943 transitions. [2021-03-26 03:41:13,834 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3943 transitions. [2021-03-26 03:41:13,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:41:13,836 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3943 transitions. [2021-03-26 03:41:13,839 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 246.4375) internal successors, (3943), 16 states have internal predecessors, (3943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:41:13,843 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 269.0) internal successors, (4573), 17 states have internal predecessors, (4573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:41:13,843 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 269.0) internal successors, (4573), 17 states have internal predecessors, (4573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:41:13,843 INFO L185 Difference]: Start difference. First operand has 99 places, 58 transitions, 241 flow. Second operand 16 states and 3943 transitions. [2021-03-26 03:41:13,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 196 transitions, 1208 flow [2021-03-26 03:41:13,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 196 transitions, 1194 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 03:41:13,968 INFO L241 Difference]: Finished difference. Result has 127 places, 76 transitions, 438 flow [2021-03-26 03:41:13,969 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=438, PETRI_PLACES=127, PETRI_TRANSITIONS=76} [2021-03-26 03:41:13,969 INFO L343 CegarLoopForPetriNet]: 86 programPoint places, 41 predicate places. [2021-03-26 03:41:13,969 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:41:13,969 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 127 places, 76 transitions, 438 flow [2021-03-26 03:41:13,969 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 127 places, 76 transitions, 438 flow [2021-03-26 03:41:13,969 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 127 places, 76 transitions, 438 flow [2021-03-26 03:41:14,017 INFO L129 PetriNetUnfolder]: 11/726 cut-off events. [2021-03-26 03:41:14,017 INFO L130 PetriNetUnfolder]: For 301/318 co-relation queries the response was YES. [2021-03-26 03:41:14,019 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1175 conditions, 726 events. 11/726 cut-off events. For 301/318 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 7001 event pairs, 0 based on Foata normal form. 0/641 useless extension candidates. Maximal degree in co-relation 1138. Up to 59 conditions per place. [2021-03-26 03:41:14,023 INFO L142 LiptonReduction]: Number of co-enabled transitions 1402 [2021-03-26 03:41:14,025 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:41:14,025 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:41:14,025 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 56 [2021-03-26 03:41:14,026 INFO L480 AbstractCegarLoop]: Abstraction has has 127 places, 76 transitions, 438 flow [2021-03-26 03:41:14,027 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 239.9375) internal successors, (3839), 16 states have internal predecessors, (3839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:41:14,027 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:41:14,027 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:41:14,027 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-03-26 03:41:14,027 INFO L428 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-26 03:41:14,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:41:14,027 INFO L82 PathProgramCache]: Analyzing trace with hash -1588330511, now seen corresponding path program 3 times [2021-03-26 03:41:14,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:41:14,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7629191] [2021-03-26 03:41:14,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:41:14,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:41:14,164 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:41:14,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:41:14,165 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:41:14,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 03:41:14,168 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:41:14,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 03:41:14,174 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-26 03:41:14,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 03:41:14,183 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-26 03:41:14,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 03:41:14,195 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-26 03:41:14,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 03:41:14,211 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-26 03:41:14,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-26 03:41:14,231 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-03-26 03:41:14,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-03-26 03:41:14,264 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-03-26 03:41:14,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-26 03:41:14,308 INFO L142 QuantifierPusher]: treesize reduction 63, result has 52.3 percent of original size [2021-03-26 03:41:14,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-03-26 03:41:14,352 INFO L142 QuantifierPusher]: treesize reduction 72, result has 51.7 percent of original size [2021-03-26 03:41:14,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-03-26 03:41:14,404 INFO L142 QuantifierPusher]: treesize reduction 81, result has 51.2 percent of original size [2021-03-26 03:41:14,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-03-26 03:41:14,469 INFO L142 QuantifierPusher]: treesize reduction 99, result has 49.0 percent of original size [2021-03-26 03:41:14,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-03-26 03:41:14,532 INFO L142 QuantifierPusher]: treesize reduction 108, result has 48.8 percent of original size [2021-03-26 03:41:14,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-03-26 03:41:14,616 INFO L142 QuantifierPusher]: treesize reduction 117, result has 47.3 percent of original size [2021-03-26 03:41:14,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-03-26 03:41:14,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 03:41:14,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7629191] [2021-03-26 03:41:14,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:41:14,681 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-26 03:41:14,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778207314] [2021-03-26 03:41:14,681 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-26 03:41:14,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:41:14,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-26 03:41:14,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2021-03-26 03:41:14,683 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 269 [2021-03-26 03:41:14,685 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 76 transitions, 438 flow. Second operand has 16 states, 16 states have (on average 239.9375) internal successors, (3839), 16 states have internal predecessors, (3839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:41:14,685 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:41:14,685 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 269 [2021-03-26 03:41:14,685 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand