/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_15.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-26 03:40:46,142 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-26 03:40:46,144 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-26 03:40:46,175 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-26 03:40:46,175 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-26 03:40:46,178 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-26 03:40:46,179 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-26 03:40:46,183 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-26 03:40:46,185 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-26 03:40:46,188 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-26 03:40:46,189 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-26 03:40:46,190 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-26 03:40:46,190 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-26 03:40:46,191 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-26 03:40:46,192 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-26 03:40:46,195 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-26 03:40:46,197 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-26 03:40:46,198 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-26 03:40:46,200 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-26 03:40:46,204 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-26 03:40:46,205 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-26 03:40:46,205 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-26 03:40:46,206 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-26 03:40:46,207 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-26 03:40:46,212 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-26 03:40:46,219 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-26 03:40:46,220 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-26 03:40:46,220 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-26 03:40:46,223 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 03:40:46,251 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-26 03:40:46,251 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-26 03:40:46,254 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-26 03:40:46,254 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-26 03:40:46,254 INFO L138 SettingsManager]: * Use SBE=true [2021-03-26 03:40:46,254 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-26 03:40:46,254 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-26 03:40:46,254 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-26 03:40:46,254 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-26 03:40:46,254 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-26 03:40:46,255 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-26 03:40:46,255 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-26 03:40:46,255 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-26 03:40:46,255 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-26 03:40:46,256 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-26 03:40:46,256 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-26 03:40:46,256 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-26 03:40:46,256 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-26 03:40:46,256 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-26 03:40:46,256 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-26 03:40:46,256 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-26 03:40:46,256 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-26 03:40:46,256 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-26 03:40:46,256 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-26 03:40:46,256 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-26 03:40:46,257 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-26 03:40:46,257 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-26 03:40:46,257 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES [2021-03-26 03:40:46,257 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-26 03:40:46,257 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-26 03:40:46,257 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-26 03:40:46,515 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-26 03:40:46,529 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-26 03:40:46,531 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-26 03:40:46,531 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-26 03:40:46,532 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-26 03:40:46,533 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_15.bpl [2021-03-26 03:40:46,533 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_15.bpl' [2021-03-26 03:40:46,571 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-26 03:40:46,572 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-26 03:40:46,573 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-26 03:40:46,574 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-26 03:40:46,574 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-26 03:40:46,582 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_15.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:40:46" (1/1) ... [2021-03-26 03:40:46,587 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_15.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:40:46" (1/1) ... [2021-03-26 03:40:46,592 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-26 03:40:46,594 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-26 03:40:46,594 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-26 03:40:46,594 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-26 03:40:46,599 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_15.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:40:46" (1/1) ... [2021-03-26 03:40:46,599 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_15.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:40:46" (1/1) ... [2021-03-26 03:40:46,600 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_15.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:40:46" (1/1) ... [2021-03-26 03:40:46,600 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_15.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:40:46" (1/1) ... [2021-03-26 03:40:46,602 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_15.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:40:46" (1/1) ... [2021-03-26 03:40:46,603 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_15.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:40:46" (1/1) ... [2021-03-26 03:40:46,603 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_15.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:40:46" (1/1) ... [2021-03-26 03:40:46,604 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-26 03:40:46,605 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-26 03:40:46,605 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-26 03:40:46,605 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-26 03:40:46,606 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_15.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:40:46" (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 03:40:46,660 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_14 given in one single declaration [2021-03-26 03:40:46,660 INFO L130 BoogieDeclarations]: Found specification of procedure set_14 [2021-03-26 03:40:46,660 INFO L138 BoogieDeclarations]: Found implementation of procedure set_14 [2021-03-26 03:40:46,660 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2021-03-26 03:40:46,660 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2021-03-26 03:40:46,660 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2021-03-26 03:40:46,660 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2021-03-26 03:40:46,660 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2021-03-26 03:40:46,661 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2021-03-26 03:40:46,661 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2021-03-26 03:40:46,661 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2021-03-26 03:40:46,661 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2021-03-26 03:40:46,661 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2021-03-26 03:40:46,661 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2021-03-26 03:40:46,661 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2021-03-26 03:40:46,661 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2021-03-26 03:40:46,661 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2021-03-26 03:40:46,661 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2021-03-26 03:40:46,662 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_9 given in one single declaration [2021-03-26 03:40:46,662 INFO L130 BoogieDeclarations]: Found specification of procedure set_9 [2021-03-26 03:40:46,662 INFO L138 BoogieDeclarations]: Found implementation of procedure set_9 [2021-03-26 03:40:46,662 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-26 03:40:46,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-26 03:40:46,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-26 03:40:46,662 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_12 given in one single declaration [2021-03-26 03:40:46,662 INFO L130 BoogieDeclarations]: Found specification of procedure set_12 [2021-03-26 03:40:46,662 INFO L138 BoogieDeclarations]: Found implementation of procedure set_12 [2021-03-26 03:40:46,662 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_5 given in one single declaration [2021-03-26 03:40:46,662 INFO L130 BoogieDeclarations]: Found specification of procedure set_5 [2021-03-26 03:40:46,662 INFO L138 BoogieDeclarations]: Found implementation of procedure set_5 [2021-03-26 03:40:46,663 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_13 given in one single declaration [2021-03-26 03:40:46,663 INFO L130 BoogieDeclarations]: Found specification of procedure set_13 [2021-03-26 03:40:46,663 INFO L138 BoogieDeclarations]: Found implementation of procedure set_13 [2021-03-26 03:40:46,663 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_6 given in one single declaration [2021-03-26 03:40:46,663 INFO L130 BoogieDeclarations]: Found specification of procedure set_6 [2021-03-26 03:40:46,663 INFO L138 BoogieDeclarations]: Found implementation of procedure set_6 [2021-03-26 03:40:46,663 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_10 given in one single declaration [2021-03-26 03:40:46,663 INFO L130 BoogieDeclarations]: Found specification of procedure set_10 [2021-03-26 03:40:46,663 INFO L138 BoogieDeclarations]: Found implementation of procedure set_10 [2021-03-26 03:40:46,663 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_7 given in one single declaration [2021-03-26 03:40:46,664 INFO L130 BoogieDeclarations]: Found specification of procedure set_7 [2021-03-26 03:40:46,664 INFO L138 BoogieDeclarations]: Found implementation of procedure set_7 [2021-03-26 03:40:46,664 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_11 given in one single declaration [2021-03-26 03:40:46,664 INFO L130 BoogieDeclarations]: Found specification of procedure set_11 [2021-03-26 03:40:46,664 INFO L138 BoogieDeclarations]: Found implementation of procedure set_11 [2021-03-26 03:40:46,664 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_8 given in one single declaration [2021-03-26 03:40:46,664 INFO L130 BoogieDeclarations]: Found specification of procedure set_8 [2021-03-26 03:40:46,664 INFO L138 BoogieDeclarations]: Found implementation of procedure set_8 [2021-03-26 03:40:46,665 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 03:40:46,917 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-26 03:40:46,917 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-26 03:40:46,918 INFO L202 PluginConnector]: Adding new model example_15.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 03:40:46 BoogieIcfgContainer [2021-03-26 03:40:46,918 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-26 03:40:46,920 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-26 03:40:46,920 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-26 03:40:46,921 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-26 03:40:46,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_15.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:40:46" (1/2) ... [2021-03-26 03:40:46,922 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2357f66f and model type example_15.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.03 03:40:46, skipping insertion in model container [2021-03-26 03:40:46,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_15.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 03:40:46" (2/2) ... [2021-03-26 03:40:46,923 INFO L111 eAbstractionObserver]: Analyzing ICFG example_15.bpl [2021-03-26 03:40:46,926 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-26 03:40:46,928 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-26 03:40:46,929 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-26 03:40:47,243 INFO L149 ThreadInstanceAdder]: Constructed 225 joinOtherThreadTransitions. [2021-03-26 03:40:47,258 INFO L253 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2021-03-26 03:40:47,284 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:40:47,285 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:40:47,285 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:40:47,285 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:40:47,285 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:40:47,285 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:40:47,285 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:40:47,285 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:40:47,305 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 124 places, 288 transitions, 1326 flow [2021-03-26 03:41:04,061 INFO L129 PetriNetUnfolder]: 212993/245808 cut-off events. [2021-03-26 03:41:04,062 INFO L130 PetriNetUnfolder]: For 245760/245760 co-relation queries the response was YES. [2021-03-26 03:41:05,825 INFO L84 FinitePrefix]: Finished finitePrefix Result has 491614 conditions, 245808 events. 212993/245808 cut-off events. For 245760/245760 co-relation queries the response was YES. Maximal size of possible extension queue 7060. Compared 1008684 event pairs, 0 based on Foata normal form. 0/245807 useless extension candidates. Maximal degree in co-relation 229448. Up to 51480 conditions per place. [2021-03-26 03:41:05,826 INFO L82 GeneralOperation]: Start removeDead. Operand has 124 places, 288 transitions, 1326 flow [2021-03-26 03:41:07,279 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 107 places, 271 transitions, 1262 flow [2021-03-26 03:41:07,280 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:41:07,289 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 107 places, 271 transitions, 1262 flow [2021-03-26 03:41:07,291 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 107 places, 271 transitions, 1262 flow [2021-03-26 03:41:07,293 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 107 places, 271 transitions, 1262 flow [2021-03-26 03:41:23,632 INFO L129 PetriNetUnfolder]: 212993/245806 cut-off events. [2021-03-26 03:41:23,632 INFO L130 PetriNetUnfolder]: For 245760/245760 co-relation queries the response was YES. [2021-03-26 03:41:25,396 INFO L84 FinitePrefix]: Finished finitePrefix Result has 491612 conditions, 245806 events. 212993/245806 cut-off events. For 245760/245760 co-relation queries the response was YES. Maximal size of possible extension queue 7060. Compared 1023057 event pairs, 0 based on Foata normal form. 0/245806 useless extension candidates. Maximal degree in co-relation 229448. Up to 51480 conditions per place. [2021-03-26 03:41:31,228 INFO L142 LiptonReduction]: Number of co-enabled transitions 13020 [2021-03-26 03:41:31,950 INFO L154 LiptonReduction]: Checked pairs total: 3465 [2021-03-26 03:41:31,950 INFO L156 LiptonReduction]: Total number of compositions: 15 [2021-03-26 03:41:31,952 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 24673 [2021-03-26 03:41:47,838 INFO L129 PetriNetUnfolder]: 212993/245790 cut-off events. [2021-03-26 03:41:47,838 INFO L130 PetriNetUnfolder]: For 245760/245760 co-relation queries the response was YES. [2021-03-26 03:41:47,839 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:41:47,839 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:41:47,840 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr14INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-26 03:41:47,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:41:47,844 INFO L82 PathProgramCache]: Analyzing trace with hash 873046711, now seen corresponding path program 1 times [2021-03-26 03:41:47,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:41:47,855 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33815555] [2021-03-26 03:41:47,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:41:47,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:41:47,942 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:41:47,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:41:47,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:41:47,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:41:47,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:41:47,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:41:47,957 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 03:41:47,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33815555] [2021-03-26 03:41:47,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:41:47,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 03:41:47,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981712926] [2021-03-26 03:41:47,964 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:41:47,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:41:47,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:41:47,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:41:47,975 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 303 [2021-03-26 03:41:47,978 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 256 transitions, 1232 flow. Second operand has 3 states, 3 states have (on average 287.6666666666667) internal successors, (863), 3 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:41:47,978 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:41:47,978 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 303 [2021-03-26 03:41:47,979 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:41:55,577 INFO L129 PetriNetUnfolder]: 98501/115021 cut-off events. [2021-03-26 03:41:55,578 INFO L130 PetriNetUnfolder]: For 164037/164037 co-relation queries the response was YES. [2021-03-26 03:41:56,274 INFO L84 FinitePrefix]: Finished finitePrefix Result has 230165 conditions, 115021 events. 98501/115021 cut-off events. For 164037/164037 co-relation queries the response was YES. Maximal size of possible extension queue 3628. Compared 580108 event pairs, 0 based on Foata normal form. 16278/131299 useless extension candidates. Maximal degree in co-relation 229397. Up to 24024 conditions per place. [2021-03-26 03:41:57,198 INFO L132 encePairwiseOnDemand]: 290/303 looper letters, 3 selfloop transitions, 1 changer transitions 0/244 dead transitions. [2021-03-26 03:41:57,199 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 244 transitions, 1180 flow [2021-03-26 03:41:57,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:41:57,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:41:57,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 877 transitions. [2021-03-26 03:41:57,213 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9647964796479648 [2021-03-26 03:41:57,213 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 877 transitions. [2021-03-26 03:41:57,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 877 transitions. [2021-03-26 03:41:57,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:41:57,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 877 transitions. [2021-03-26 03:41:57,221 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 292.3333333333333) internal successors, (877), 3 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:41:57,228 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:41:57,229 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:41:57,230 INFO L185 Difference]: Start difference. First operand has 92 places, 256 transitions, 1232 flow. Second operand 3 states and 877 transitions. [2021-03-26 03:41:57,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 244 transitions, 1180 flow [2021-03-26 03:41:59,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 244 transitions, 724 flow, removed 0 selfloop flow, removed 30 redundant places. [2021-03-26 03:41:59,321 INFO L241 Difference]: Finished difference. Result has 64 places, 244 transitions, 718 flow [2021-03-26 03:41:59,322 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=303, PETRI_DIFFERENCE_MINUEND_FLOW=716, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=718, PETRI_PLACES=64, PETRI_TRANSITIONS=244} [2021-03-26 03:41:59,323 INFO L343 CegarLoopForPetriNet]: 92 programPoint places, -28 predicate places. [2021-03-26 03:41:59,323 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:41:59,323 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 64 places, 244 transitions, 718 flow [2021-03-26 03:41:59,323 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 64 places, 244 transitions, 718 flow [2021-03-26 03:41:59,324 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 64 places, 244 transitions, 718 flow [2021-03-26 03:42:04,013 INFO L129 PetriNetUnfolder]: 98501/115021 cut-off events. [2021-03-26 03:42:04,013 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:42:04,319 INFO L84 FinitePrefix]: Finished finitePrefix Result has 115039 conditions, 115021 events. 98501/115021 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3628. Compared 472158 event pairs, 0 based on Foata normal form. 0/115021 useless extension candidates. Maximal degree in co-relation 115010. Up to 24024 conditions per place. [2021-03-26 03:42:05,356 INFO L142 LiptonReduction]: Number of co-enabled transitions 5964 [2021-03-26 03:42:05,374 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:42:05,375 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:42:05,375 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 6052 [2021-03-26 03:42:05,378 INFO L480 AbstractCegarLoop]: Abstraction has has 64 places, 244 transitions, 718 flow [2021-03-26 03:42:05,378 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 287.6666666666667) internal successors, (863), 3 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:42:05,378 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:42:05,378 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:42:05,379 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-26 03:42:05,379 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr14INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-26 03:42:05,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:42:05,379 INFO L82 PathProgramCache]: Analyzing trace with hash 1941928801, now seen corresponding path program 1 times [2021-03-26 03:42:05,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:42:05,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597653031] [2021-03-26 03:42:05,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:42:05,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:42:05,398 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:42:05,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:42:05,399 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:42:05,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:42:05,401 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:42:05,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:42:05,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 03:42:05,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597653031] [2021-03-26 03:42:05,402 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:42:05,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 03:42:05,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923075581] [2021-03-26 03:42:05,403 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:42:05,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:42:05,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:42:05,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:42:05,404 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 303 [2021-03-26 03:42:05,405 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 244 transitions, 718 flow. Second operand has 3 states, 3 states have (on average 287.6666666666667) internal successors, (863), 3 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:42:05,405 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:42:05,405 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 303 [2021-03-26 03:42:05,405 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:42:08,969 INFO L129 PetriNetUnfolder]: 65871/78295 cut-off events. [2021-03-26 03:42:08,977 INFO L130 PetriNetUnfolder]: For 8206/8206 co-relation queries the response was YES. [2021-03-26 03:42:09,219 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82425 conditions, 78295 events. 65871/78295 cut-off events. For 8206/8206 co-relation queries the response was YES. Maximal size of possible extension queue 3067. Compared 385348 event pairs, 0 based on Foata normal form. 4096/82391 useless extension candidates. Maximal degree in co-relation 82394. Up to 18018 conditions per place. [2021-03-26 03:42:09,467 INFO L132 encePairwiseOnDemand]: 295/303 looper letters, 8 selfloop transitions, 1 changer transitions 0/237 dead transitions. [2021-03-26 03:42:09,467 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 237 transitions, 715 flow [2021-03-26 03:42:09,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:42:09,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:42:09,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 877 transitions. [2021-03-26 03:42:09,469 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9647964796479648 [2021-03-26 03:42:09,469 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 877 transitions. [2021-03-26 03:42:09,469 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 877 transitions. [2021-03-26 03:42:09,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:42:09,470 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 877 transitions. [2021-03-26 03:42:09,471 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 292.3333333333333) internal successors, (877), 3 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:42:09,474 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:42:09,475 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:42:09,475 INFO L185 Difference]: Start difference. First operand has 64 places, 244 transitions, 718 flow. Second operand 3 states and 877 transitions. [2021-03-26 03:42:09,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 237 transitions, 715 flow [2021-03-26 03:42:09,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 237 transitions, 714 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 03:42:09,491 INFO L241 Difference]: Finished difference. Result has 65 places, 237 transitions, 698 flow [2021-03-26 03:42:09,491 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=303, PETRI_DIFFERENCE_MINUEND_FLOW=696, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=698, PETRI_PLACES=65, PETRI_TRANSITIONS=237} [2021-03-26 03:42:09,492 INFO L343 CegarLoopForPetriNet]: 92 programPoint places, -27 predicate places. [2021-03-26 03:42:09,492 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:42:09,492 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 65 places, 237 transitions, 698 flow [2021-03-26 03:42:09,493 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 65 places, 237 transitions, 698 flow [2021-03-26 03:42:09,493 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 65 places, 237 transitions, 698 flow [2021-03-26 03:42:12,338 INFO L129 PetriNetUnfolder]: 65871/78295 cut-off events. [2021-03-26 03:42:12,338 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:42:12,547 INFO L84 FinitePrefix]: Finished finitePrefix Result has 78314 conditions, 78295 events. 65871/78295 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3068. Compared 332490 event pairs, 0 based on Foata normal form. 0/78295 useless extension candidates. Maximal degree in co-relation 78295. Up to 18018 conditions per place. [2021-03-26 03:42:13,206 INFO L142 LiptonReduction]: Number of co-enabled transitions 5768 [2021-03-26 03:42:13,224 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:42:13,224 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:42:13,224 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 3732 [2021-03-26 03:42:13,226 INFO L480 AbstractCegarLoop]: Abstraction has has 65 places, 237 transitions, 698 flow [2021-03-26 03:42:13,226 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 287.6666666666667) internal successors, (863), 3 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:42:13,226 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:42:13,226 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:42:13,227 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-26 03:42:13,227 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr14INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-26 03:42:13,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:42:13,227 INFO L82 PathProgramCache]: Analyzing trace with hash 607927321, now seen corresponding path program 1 times [2021-03-26 03:42:13,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:42:13,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629022171] [2021-03-26 03:42:13,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:42:13,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:42:13,241 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:42:13,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:42:13,242 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:42:13,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:42:13,245 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:42:13,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:42:13,245 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 03:42:13,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629022171] [2021-03-26 03:42:13,245 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:42:13,246 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 03:42:13,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361645770] [2021-03-26 03:42:13,246 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:42:13,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:42:13,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:42:13,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:42:13,247 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 303 [2021-03-26 03:42:13,248 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 237 transitions, 698 flow. Second operand has 3 states, 3 states have (on average 287.6666666666667) internal successors, (863), 3 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:42:13,248 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:42:13,248 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 303 [2021-03-26 03:42:13,248 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:42:14,682 INFO L129 PetriNetUnfolder]: 31308/38219 cut-off events. [2021-03-26 03:42:14,682 INFO L130 PetriNetUnfolder]: For 5696/5696 co-relation queries the response was YES. [2021-03-26 03:42:14,864 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39347 conditions, 38219 events. 31308/38219 cut-off events. For 5696/5696 co-relation queries the response was YES. Maximal size of possible extension queue 1309. Compared 186164 event pairs, 0 based on Foata normal form. 4589/42808 useless extension candidates. Maximal degree in co-relation 39327. Up to 6435 conditions per place. [2021-03-26 03:42:15,002 INFO L132 encePairwiseOnDemand]: 293/303 looper letters, 6 selfloop transitions, 1 changer transitions 0/228 dead transitions. [2021-03-26 03:42:15,002 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 228 transitions, 685 flow [2021-03-26 03:42:15,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:42:15,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:42:15,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 877 transitions. [2021-03-26 03:42:15,005 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9647964796479648 [2021-03-26 03:42:15,005 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 877 transitions. [2021-03-26 03:42:15,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 877 transitions. [2021-03-26 03:42:15,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:42:15,005 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 877 transitions. [2021-03-26 03:42:15,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 292.3333333333333) internal successors, (877), 3 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:42:15,008 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:42:15,009 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:42:15,009 INFO L185 Difference]: Start difference. First operand has 65 places, 237 transitions, 698 flow. Second operand 3 states and 877 transitions. [2021-03-26 03:42:15,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 228 transitions, 685 flow [2021-03-26 03:42:15,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 228 transitions, 684 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 03:42:15,013 INFO L241 Difference]: Finished difference. Result has 66 places, 228 transitions, 672 flow [2021-03-26 03:42:15,014 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=303, PETRI_DIFFERENCE_MINUEND_FLOW=670, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=672, PETRI_PLACES=66, PETRI_TRANSITIONS=228} [2021-03-26 03:42:15,014 INFO L343 CegarLoopForPetriNet]: 92 programPoint places, -26 predicate places. [2021-03-26 03:42:15,014 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:42:15,014 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 66 places, 228 transitions, 672 flow [2021-03-26 03:42:15,014 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 66 places, 228 transitions, 672 flow [2021-03-26 03:42:15,015 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 66 places, 228 transitions, 672 flow [2021-03-26 03:42:16,183 INFO L129 PetriNetUnfolder]: 31308/38219 cut-off events. [2021-03-26 03:42:16,184 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:42:16,364 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38239 conditions, 38219 events. 31308/38219 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1310. Compared 162997 event pairs, 0 based on Foata normal form. 0/38219 useless extension candidates. Maximal degree in co-relation 38220. Up to 6435 conditions per place. [2021-03-26 03:42:16,869 INFO L142 LiptonReduction]: Number of co-enabled transitions 5516 [2021-03-26 03:42:16,882 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:42:16,883 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:42:16,883 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1869 [2021-03-26 03:42:16,884 INFO L480 AbstractCegarLoop]: Abstraction has has 66 places, 228 transitions, 672 flow [2021-03-26 03:42:16,884 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 287.6666666666667) internal successors, (863), 3 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:42:16,884 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:42:16,885 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:42:16,885 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-26 03:42:16,885 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr14INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-26 03:42:16,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:42:16,885 INFO L82 PathProgramCache]: Analyzing trace with hash -926207163, now seen corresponding path program 1 times [2021-03-26 03:42:16,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:42:16,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197190129] [2021-03-26 03:42:16,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:42:16,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:42:16,900 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:42:16,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:42:16,901 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:42:16,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:42:16,904 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:42:16,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:42:16,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 03:42:16,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197190129] [2021-03-26 03:42:16,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:42:16,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 03:42:16,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378598173] [2021-03-26 03:42:16,905 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:42:16,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:42:16,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:42:16,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:42:16,906 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 303 [2021-03-26 03:42:16,906 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 228 transitions, 672 flow. Second operand has 3 states, 3 states have (on average 287.6666666666667) internal successors, (863), 3 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:42:16,907 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:42:16,907 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 303 [2021-03-26 03:42:16,907 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:42:18,003 INFO L129 PetriNetUnfolder]: 24290/30177 cut-off events. [2021-03-26 03:42:18,003 INFO L130 PetriNetUnfolder]: For 2923/2923 co-relation queries the response was YES. [2021-03-26 03:42:18,057 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32098 conditions, 30177 events. 24290/30177 cut-off events. For 2923/2923 co-relation queries the response was YES. Maximal size of possible extension queue 1309. Compared 148492 event pairs, 0 based on Foata normal form. 1024/31201 useless extension candidates. Maximal degree in co-relation 32077. Up to 6435 conditions per place. [2021-03-26 03:42:18,132 INFO L132 encePairwiseOnDemand]: 296/303 looper letters, 9 selfloop transitions, 1 changer transitions 0/222 dead transitions. [2021-03-26 03:42:18,133 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 222 transitions, 674 flow [2021-03-26 03:42:18,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:42:18,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:42:18,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 877 transitions. [2021-03-26 03:42:18,135 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9647964796479648 [2021-03-26 03:42:18,136 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 877 transitions. [2021-03-26 03:42:18,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 877 transitions. [2021-03-26 03:42:18,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:42:18,150 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 877 transitions. [2021-03-26 03:42:18,151 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 292.3333333333333) internal successors, (877), 3 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:42:18,164 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:42:18,165 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:42:18,165 INFO L185 Difference]: Start difference. First operand has 66 places, 228 transitions, 672 flow. Second operand 3 states and 877 transitions. [2021-03-26 03:42:18,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 222 transitions, 674 flow [2021-03-26 03:42:18,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 222 transitions, 673 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 03:42:18,169 INFO L241 Difference]: Finished difference. Result has 67 places, 222 transitions, 655 flow [2021-03-26 03:42:18,169 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=303, PETRI_DIFFERENCE_MINUEND_FLOW=653, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=655, PETRI_PLACES=67, PETRI_TRANSITIONS=222} [2021-03-26 03:42:18,170 INFO L343 CegarLoopForPetriNet]: 92 programPoint places, -25 predicate places. [2021-03-26 03:42:18,170 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:42:18,170 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 67 places, 222 transitions, 655 flow [2021-03-26 03:42:18,170 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 67 places, 222 transitions, 655 flow [2021-03-26 03:42:18,171 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 67 places, 222 transitions, 655 flow [2021-03-26 03:42:19,123 INFO L129 PetriNetUnfolder]: 24290/30177 cut-off events. [2021-03-26 03:42:19,123 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:42:19,183 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30198 conditions, 30177 events. 24290/30177 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1310. Compared 133239 event pairs, 0 based on Foata normal form. 0/30177 useless extension candidates. Maximal degree in co-relation 30181. Up to 6435 conditions per place. [2021-03-26 03:42:19,326 INFO L142 LiptonReduction]: Number of co-enabled transitions 5348 [2021-03-26 03:42:19,365 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:42:19,365 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:42:19,365 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1195 [2021-03-26 03:42:19,367 INFO L480 AbstractCegarLoop]: Abstraction has has 67 places, 222 transitions, 655 flow [2021-03-26 03:42:19,368 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 287.6666666666667) internal successors, (863), 3 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:42:19,368 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:42:19,368 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:42:19,368 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-26 03:42:19,368 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr14INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-26 03:42:19,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:42:19,368 INFO L82 PathProgramCache]: Analyzing trace with hash 1646851433, now seen corresponding path program 1 times [2021-03-26 03:42:19,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:42:19,369 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185218659] [2021-03-26 03:42:19,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:42:19,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:42:19,398 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:42:19,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:42:19,399 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:42:19,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:42:19,404 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:42:19,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:42:19,407 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 03:42:19,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185218659] [2021-03-26 03:42:19,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:42:19,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 03:42:19,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322507155] [2021-03-26 03:42:19,407 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:42:19,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:42:19,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:42:19,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:42:19,409 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 303 [2021-03-26 03:42:19,410 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 222 transitions, 655 flow. Second operand has 3 states, 3 states have (on average 287.6666666666667) internal successors, (863), 3 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:42:19,410 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:42:19,410 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 303 [2021-03-26 03:42:19,410 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:42:19,713 INFO L129 PetriNetUnfolder]: 8502/11001 cut-off events. [2021-03-26 03:42:19,713 INFO L130 PetriNetUnfolder]: For 2285/2285 co-relation queries the response was YES. [2021-03-26 03:42:19,733 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11130 conditions, 11001 events. 8502/11001 cut-off events. For 2285/2285 co-relation queries the response was YES. Maximal size of possible extension queue 503. Compared 50723 event pairs, 0 based on Foata normal form. 2179/13180 useless extension candidates. Maximal degree in co-relation 11112. Up to 1980 conditions per place. [2021-03-26 03:42:19,760 INFO L132 encePairwiseOnDemand]: 291/303 looper letters, 4 selfloop transitions, 1 changer transitions 0/211 dead transitions. [2021-03-26 03:42:19,760 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 211 transitions, 632 flow [2021-03-26 03:42:19,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:42:19,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:42:19,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 877 transitions. [2021-03-26 03:42:19,762 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9647964796479648 [2021-03-26 03:42:19,762 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 877 transitions. [2021-03-26 03:42:19,762 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 877 transitions. [2021-03-26 03:42:19,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:42:19,762 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 877 transitions. [2021-03-26 03:42:19,763 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 292.3333333333333) internal successors, (877), 3 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:42:19,764 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:42:19,765 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:42:19,765 INFO L185 Difference]: Start difference. First operand has 67 places, 222 transitions, 655 flow. Second operand 3 states and 877 transitions. [2021-03-26 03:42:19,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 211 transitions, 632 flow [2021-03-26 03:42:19,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 211 transitions, 631 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 03:42:19,768 INFO L241 Difference]: Finished difference. Result has 68 places, 211 transitions, 623 flow [2021-03-26 03:42:19,768 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=303, PETRI_DIFFERENCE_MINUEND_FLOW=621, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=623, PETRI_PLACES=68, PETRI_TRANSITIONS=211} [2021-03-26 03:42:19,768 INFO L343 CegarLoopForPetriNet]: 92 programPoint places, -24 predicate places. [2021-03-26 03:42:19,768 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:42:19,768 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 68 places, 211 transitions, 623 flow [2021-03-26 03:42:19,768 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 68 places, 211 transitions, 623 flow [2021-03-26 03:42:19,769 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 68 places, 211 transitions, 623 flow [2021-03-26 03:42:20,034 INFO L129 PetriNetUnfolder]: 8502/11001 cut-off events. [2021-03-26 03:42:20,035 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:42:20,050 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11023 conditions, 11001 events. 8502/11001 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 503. Compared 47146 event pairs, 0 based on Foata normal form. 0/11001 useless extension candidates. Maximal degree in co-relation 11006. Up to 1980 conditions per place. [2021-03-26 03:42:20,106 INFO L142 LiptonReduction]: Number of co-enabled transitions 5040 [2021-03-26 03:42:20,118 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:42:20,118 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:42:20,119 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 351 [2021-03-26 03:42:20,119 INFO L480 AbstractCegarLoop]: Abstraction has has 68 places, 211 transitions, 623 flow [2021-03-26 03:42:20,120 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 287.6666666666667) internal successors, (863), 3 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:42:20,120 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:42:20,120 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:42:20,120 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-26 03:42:20,120 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr14INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-26 03:42:20,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:42:20,121 INFO L82 PathProgramCache]: Analyzing trace with hash -945345547, now seen corresponding path program 1 times [2021-03-26 03:42:20,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:42:20,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922003881] [2021-03-26 03:42:20,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:42:20,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:42:20,135 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:42:20,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:42:20,136 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:42:20,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:42:20,138 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:42:20,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:42:20,139 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 03:42:20,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922003881] [2021-03-26 03:42:20,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:42:20,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 03:42:20,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605114234] [2021-03-26 03:42:20,140 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:42:20,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:42:20,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:42:20,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:42:20,140 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 303 [2021-03-26 03:42:20,141 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 211 transitions, 623 flow. Second operand has 3 states, 3 states have (on average 287.6666666666667) internal successors, (863), 3 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:42:20,141 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:42:20,141 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 303 [2021-03-26 03:42:20,141 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:42:20,311 INFO L129 PetriNetUnfolder]: 4371/5948 cut-off events. [2021-03-26 03:42:20,311 INFO L130 PetriNetUnfolder]: For 912/912 co-relation queries the response was YES. [2021-03-26 03:42:20,321 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6298 conditions, 5948 events. 4371/5948 cut-off events. For 912/912 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 27457 event pairs, 0 based on Foata normal form. 586/6534 useless extension candidates. Maximal degree in co-relation 6280. Up to 880 conditions per place. [2021-03-26 03:42:20,334 INFO L132 encePairwiseOnDemand]: 294/303 looper letters, 7 selfloop transitions, 1 changer transitions 0/203 dead transitions. [2021-03-26 03:42:20,334 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 203 transitions, 615 flow [2021-03-26 03:42:20,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:42:20,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:42:20,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 877 transitions. [2021-03-26 03:42:20,336 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9647964796479648 [2021-03-26 03:42:20,336 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 877 transitions. [2021-03-26 03:42:20,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 877 transitions. [2021-03-26 03:42:20,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:42:20,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 877 transitions. [2021-03-26 03:42:20,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 292.3333333333333) internal successors, (877), 3 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:42:20,338 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:42:20,339 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:42:20,339 INFO L185 Difference]: Start difference. First operand has 68 places, 211 transitions, 623 flow. Second operand 3 states and 877 transitions. [2021-03-26 03:42:20,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 203 transitions, 615 flow [2021-03-26 03:42:20,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 203 transitions, 614 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 03:42:20,341 INFO L241 Difference]: Finished difference. Result has 69 places, 203 transitions, 600 flow [2021-03-26 03:42:20,342 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=303, PETRI_DIFFERENCE_MINUEND_FLOW=598, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=600, PETRI_PLACES=69, PETRI_TRANSITIONS=203} [2021-03-26 03:42:20,342 INFO L343 CegarLoopForPetriNet]: 92 programPoint places, -23 predicate places. [2021-03-26 03:42:20,342 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:42:20,342 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 203 transitions, 600 flow [2021-03-26 03:42:20,342 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 203 transitions, 600 flow [2021-03-26 03:42:20,343 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 69 places, 203 transitions, 600 flow [2021-03-26 03:42:20,482 INFO L129 PetriNetUnfolder]: 4371/5948 cut-off events. [2021-03-26 03:42:20,482 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:42:20,492 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5971 conditions, 5948 events. 4371/5948 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 26030 event pairs, 0 based on Foata normal form. 0/5948 useless extension candidates. Maximal degree in co-relation 5954. Up to 880 conditions per place. [2021-03-26 03:42:20,524 INFO L142 LiptonReduction]: Number of co-enabled transitions 4816 [2021-03-26 03:42:20,533 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:42:20,533 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:42:20,533 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 191 [2021-03-26 03:42:20,534 INFO L480 AbstractCegarLoop]: Abstraction has has 69 places, 203 transitions, 600 flow [2021-03-26 03:42:20,535 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 287.6666666666667) internal successors, (863), 3 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:42:20,535 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:42:20,535 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:42:20,535 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-26 03:42:20,535 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr14INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-26 03:42:20,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:42:20,535 INFO L82 PathProgramCache]: Analyzing trace with hash -1105824269, now seen corresponding path program 1 times [2021-03-26 03:42:20,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:42:20,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169685508] [2021-03-26 03:42:20,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:42:20,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:42:20,546 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:42:20,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:42:20,547 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:42:20,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:42:20,549 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:42:20,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:42:20,550 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 03:42:20,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169685508] [2021-03-26 03:42:20,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:42:20,550 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 03:42:20,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237454022] [2021-03-26 03:42:20,550 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:42:20,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:42:20,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:42:20,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:42:20,551 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 303 [2021-03-26 03:42:20,552 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 203 transitions, 600 flow. Second operand has 3 states, 3 states have (on average 287.6666666666667) internal successors, (863), 3 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:42:20,552 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:42:20,552 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 303 [2021-03-26 03:42:20,552 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:42:20,608 INFO L129 PetriNetUnfolder]: 1174/1708 cut-off events. [2021-03-26 03:42:20,608 INFO L130 PetriNetUnfolder]: For 489/489 co-relation queries the response was YES. [2021-03-26 03:42:20,611 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1748 conditions, 1708 events. 1174/1708 cut-off events. For 489/489 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 6899 event pairs, 0 based on Foata normal form. 474/2182 useless extension candidates. Maximal degree in co-relation 1730. Up to 280 conditions per place. [2021-03-26 03:42:20,614 INFO L132 encePairwiseOnDemand]: 289/303 looper letters, 2 selfloop transitions, 1 changer transitions 0/190 dead transitions. [2021-03-26 03:42:20,615 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 190 transitions, 567 flow [2021-03-26 03:42:20,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:42:20,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:42:20,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 877 transitions. [2021-03-26 03:42:20,616 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9647964796479648 [2021-03-26 03:42:20,616 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 877 transitions. [2021-03-26 03:42:20,616 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 877 transitions. [2021-03-26 03:42:20,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:42:20,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 877 transitions. [2021-03-26 03:42:20,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 292.3333333333333) internal successors, (877), 3 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:42:20,619 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:42:20,619 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:42:20,619 INFO L185 Difference]: Start difference. First operand has 69 places, 203 transitions, 600 flow. Second operand 3 states and 877 transitions. [2021-03-26 03:42:20,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 190 transitions, 567 flow [2021-03-26 03:42:20,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 190 transitions, 566 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 03:42:20,622 INFO L241 Difference]: Finished difference. Result has 70 places, 190 transitions, 562 flow [2021-03-26 03:42:20,622 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=303, PETRI_DIFFERENCE_MINUEND_FLOW=560, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=562, PETRI_PLACES=70, PETRI_TRANSITIONS=190} [2021-03-26 03:42:20,622 INFO L343 CegarLoopForPetriNet]: 92 programPoint places, -22 predicate places. [2021-03-26 03:42:20,622 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:42:20,622 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 70 places, 190 transitions, 562 flow [2021-03-26 03:42:20,622 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 70 places, 190 transitions, 562 flow [2021-03-26 03:42:20,623 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 70 places, 190 transitions, 562 flow [2021-03-26 03:42:20,664 INFO L129 PetriNetUnfolder]: 1174/1708 cut-off events. [2021-03-26 03:42:20,664 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:42:20,667 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1732 conditions, 1708 events. 1174/1708 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 6752 event pairs, 0 based on Foata normal form. 0/1708 useless extension candidates. Maximal degree in co-relation 1715. Up to 280 conditions per place. [2021-03-26 03:42:20,676 INFO L142 LiptonReduction]: Number of co-enabled transitions 3512 [2021-03-26 03:42:20,684 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:42:20,684 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:42:20,684 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 62 [2021-03-26 03:42:20,685 INFO L480 AbstractCegarLoop]: Abstraction has has 70 places, 190 transitions, 562 flow [2021-03-26 03:42:20,685 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 287.6666666666667) internal successors, (863), 3 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:42:20,685 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:42:20,685 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:42:20,685 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-26 03:42:20,685 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr14INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-26 03:42:20,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:42:20,686 INFO L82 PathProgramCache]: Analyzing trace with hash 1433291429, now seen corresponding path program 1 times [2021-03-26 03:42:20,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:42:20,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617319082] [2021-03-26 03:42:20,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:42:20,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:42:20,696 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:42:20,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:42:20,697 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:42:20,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:42:20,699 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:42:20,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:42:20,699 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 03:42:20,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617319082] [2021-03-26 03:42:20,700 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:42:20,700 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 03:42:20,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985828941] [2021-03-26 03:42:20,700 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:42:20,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:42:20,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:42:20,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:42:20,701 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 303 [2021-03-26 03:42:20,701 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 190 transitions, 562 flow. Second operand has 3 states, 3 states have (on average 287.6666666666667) internal successors, (863), 3 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:42:20,701 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:42:20,702 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 303 [2021-03-26 03:42:20,702 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:42:20,728 INFO L129 PetriNetUnfolder]: 355/555 cut-off events. [2021-03-26 03:42:20,728 INFO L130 PetriNetUnfolder]: For 169/169 co-relation queries the response was YES. [2021-03-26 03:42:20,729 INFO L84 FinitePrefix]: Finished finitePrefix Result has 582 conditions, 555 events. 355/555 cut-off events. For 169/169 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2133 event pairs, 0 based on Foata normal form. 168/723 useless extension candidates. Maximal degree in co-relation 564. Up to 140 conditions per place. [2021-03-26 03:42:20,730 INFO L132 encePairwiseOnDemand]: 288/303 looper letters, 1 selfloop transitions, 1 changer transitions 0/126 dead transitions. [2021-03-26 03:42:20,730 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 126 transitions, 374 flow [2021-03-26 03:42:20,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:42:20,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:42:20,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 877 transitions. [2021-03-26 03:42:20,732 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9647964796479648 [2021-03-26 03:42:20,732 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 877 transitions. [2021-03-26 03:42:20,732 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 877 transitions. [2021-03-26 03:42:20,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:42:20,733 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 877 transitions. [2021-03-26 03:42:20,734 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 292.3333333333333) internal successors, (877), 3 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:42:20,735 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:42:20,735 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:42:20,735 INFO L185 Difference]: Start difference. First operand has 70 places, 190 transitions, 562 flow. Second operand 3 states and 877 transitions. [2021-03-26 03:42:20,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 126 transitions, 374 flow [2021-03-26 03:42:20,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 126 transitions, 373 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 03:42:20,737 INFO L241 Difference]: Finished difference. Result has 71 places, 126 transitions, 371 flow [2021-03-26 03:42:20,737 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=303, PETRI_DIFFERENCE_MINUEND_FLOW=369, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=371, PETRI_PLACES=71, PETRI_TRANSITIONS=126} [2021-03-26 03:42:20,737 INFO L343 CegarLoopForPetriNet]: 92 programPoint places, -21 predicate places. [2021-03-26 03:42:20,737 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:42:20,737 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 71 places, 126 transitions, 371 flow [2021-03-26 03:42:20,737 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 71 places, 126 transitions, 371 flow [2021-03-26 03:42:20,738 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 71 places, 126 transitions, 371 flow [2021-03-26 03:42:20,751 INFO L129 PetriNetUnfolder]: 355/555 cut-off events. [2021-03-26 03:42:20,751 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:42:20,752 INFO L84 FinitePrefix]: Finished finitePrefix Result has 580 conditions, 555 events. 355/555 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1896 event pairs, 0 based on Foata normal form. 0/555 useless extension candidates. Maximal degree in co-relation 563. Up to 140 conditions per place. [2021-03-26 03:42:20,755 INFO L142 LiptonReduction]: Number of co-enabled transitions 2240 [2021-03-26 03:42:20,759 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:42:20,759 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:42:20,759 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 22 [2021-03-26 03:42:20,760 INFO L480 AbstractCegarLoop]: Abstraction has has 71 places, 126 transitions, 371 flow [2021-03-26 03:42:20,760 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 287.6666666666667) internal successors, (863), 3 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:42:20,760 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:42:20,760 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:42:20,760 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-26 03:42:20,760 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr14INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-26 03:42:20,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:42:20,760 INFO L82 PathProgramCache]: Analyzing trace with hash -1901519683, now seen corresponding path program 1 times [2021-03-26 03:42:20,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:42:20,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530990234] [2021-03-26 03:42:20,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:42:20,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:42:20,770 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:42:20,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:42:20,771 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:42:20,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:42:20,773 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:42:20,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:42:20,787 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 03:42:20,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530990234] [2021-03-26 03:42:20,788 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:42:20,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 03:42:20,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67979580] [2021-03-26 03:42:20,788 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:42:20,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:42:20,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:42:20,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:42:20,789 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 303 [2021-03-26 03:42:20,790 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 126 transitions, 371 flow. Second operand has 3 states, 3 states have (on average 287.6666666666667) internal successors, (863), 3 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:42:20,790 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:42:20,790 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 303 [2021-03-26 03:42:20,790 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:42:20,804 INFO L129 PetriNetUnfolder]: 129/232 cut-off events. [2021-03-26 03:42:20,804 INFO L130 PetriNetUnfolder]: For 68/68 co-relation queries the response was YES. [2021-03-26 03:42:20,804 INFO L84 FinitePrefix]: Finished finitePrefix Result has 260 conditions, 232 events. 129/232 cut-off events. For 68/68 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 612 event pairs, 0 based on Foata normal form. 67/299 useless extension candidates. Maximal degree in co-relation 242. Up to 60 conditions per place. [2021-03-26 03:42:20,805 INFO L132 encePairwiseOnDemand]: 292/303 looper letters, 1 selfloop transitions, 1 changer transitions 0/76 dead transitions. [2021-03-26 03:42:20,805 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 76 transitions, 225 flow [2021-03-26 03:42:20,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:42:20,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:42:20,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 873 transitions. [2021-03-26 03:42:20,806 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9603960396039604 [2021-03-26 03:42:20,806 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 873 transitions. [2021-03-26 03:42:20,806 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 873 transitions. [2021-03-26 03:42:20,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:42:20,807 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 873 transitions. [2021-03-26 03:42:20,808 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 291.0) internal successors, (873), 3 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:42:20,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:42:20,809 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:42:20,809 INFO L185 Difference]: Start difference. First operand has 71 places, 126 transitions, 371 flow. Second operand 3 states and 873 transitions. [2021-03-26 03:42:20,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 76 transitions, 225 flow [2021-03-26 03:42:20,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 76 transitions, 224 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 03:42:20,810 INFO L241 Difference]: Finished difference. Result has 72 places, 76 transitions, 222 flow [2021-03-26 03:42:20,810 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=303, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=222, PETRI_PLACES=72, PETRI_TRANSITIONS=76} [2021-03-26 03:42:20,810 INFO L343 CegarLoopForPetriNet]: 92 programPoint places, -20 predicate places. [2021-03-26 03:42:20,810 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:42:20,810 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 72 places, 76 transitions, 222 flow [2021-03-26 03:42:20,810 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 72 places, 76 transitions, 222 flow [2021-03-26 03:42:20,811 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 72 places, 76 transitions, 222 flow [2021-03-26 03:42:20,817 INFO L129 PetriNetUnfolder]: 129/232 cut-off events. [2021-03-26 03:42:20,817 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:42:20,817 INFO L84 FinitePrefix]: Finished finitePrefix Result has 258 conditions, 232 events. 129/232 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 655 event pairs, 0 based on Foata normal form. 0/232 useless extension candidates. Maximal degree in co-relation 241. Up to 60 conditions per place. [2021-03-26 03:42:20,819 INFO L142 LiptonReduction]: Number of co-enabled transitions 1440 [2021-03-26 03:42:20,820 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:42:20,820 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:42:20,820 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 10 [2021-03-26 03:42:20,821 INFO L480 AbstractCegarLoop]: Abstraction has has 72 places, 76 transitions, 222 flow [2021-03-26 03:42:20,821 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 287.6666666666667) internal successors, (863), 3 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:42:20,822 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:42:20,822 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:42:20,822 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-26 03:42:20,822 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr14INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-26 03:42:20,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:42:20,822 INFO L82 PathProgramCache]: Analyzing trace with hash -1119967421, now seen corresponding path program 1 times [2021-03-26 03:42:20,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:42:20,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576997700] [2021-03-26 03:42:20,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:42:20,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:42:20,833 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:42:20,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:42:20,833 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:42:20,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:42:20,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:42:20,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:42:20,836 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 03:42:20,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576997700] [2021-03-26 03:42:20,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:42:20,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 03:42:20,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130395516] [2021-03-26 03:42:20,836 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:42:20,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:42:20,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:42:20,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:42:20,837 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 303 [2021-03-26 03:42:20,838 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 76 transitions, 222 flow. Second operand has 3 states, 3 states have (on average 287.6666666666667) internal successors, (863), 3 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:42:20,838 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:42:20,838 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 303 [2021-03-26 03:42:20,838 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:42:20,846 INFO L129 PetriNetUnfolder]: 54/131 cut-off events. [2021-03-26 03:42:20,846 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2021-03-26 03:42:20,847 INFO L84 FinitePrefix]: Finished finitePrefix Result has 165 conditions, 131 events. 54/131 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 278 event pairs, 0 based on Foata normal form. 26/157 useless extension candidates. Maximal degree in co-relation 146. Up to 30 conditions per place. [2021-03-26 03:42:20,847 INFO L132 encePairwiseOnDemand]: 298/303 looper letters, 2 selfloop transitions, 1 changer transitions 0/72 dead transitions. [2021-03-26 03:42:20,847 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 72 transitions, 216 flow [2021-03-26 03:42:20,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:42:20,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:42:20,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 868 transitions. [2021-03-26 03:42:20,848 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9548954895489549 [2021-03-26 03:42:20,848 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 868 transitions. [2021-03-26 03:42:20,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 868 transitions. [2021-03-26 03:42:20,849 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:42:20,849 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 868 transitions. [2021-03-26 03:42:20,850 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 289.3333333333333) internal successors, (868), 3 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:42:20,850 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:42:20,851 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:42:20,851 INFO L185 Difference]: Start difference. First operand has 72 places, 76 transitions, 222 flow. Second operand 3 states and 868 transitions. [2021-03-26 03:42:20,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 72 transitions, 216 flow [2021-03-26 03:42:20,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 72 transitions, 215 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 03:42:20,852 INFO L241 Difference]: Finished difference. Result has 73 places, 72 transitions, 211 flow [2021-03-26 03:42:20,852 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=303, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=211, PETRI_PLACES=73, PETRI_TRANSITIONS=72} [2021-03-26 03:42:20,852 INFO L343 CegarLoopForPetriNet]: 92 programPoint places, -19 predicate places. [2021-03-26 03:42:20,852 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:42:20,852 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 73 places, 72 transitions, 211 flow [2021-03-26 03:42:20,852 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 73 places, 72 transitions, 211 flow [2021-03-26 03:42:20,853 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 73 places, 72 transitions, 211 flow [2021-03-26 03:42:20,857 INFO L129 PetriNetUnfolder]: 54/131 cut-off events. [2021-03-26 03:42:20,857 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:42:20,857 INFO L84 FinitePrefix]: Finished finitePrefix Result has 158 conditions, 131 events. 54/131 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 292 event pairs, 0 based on Foata normal form. 0/131 useless extension candidates. Maximal degree in co-relation 145. Up to 30 conditions per place. [2021-03-26 03:42:20,858 INFO L142 LiptonReduction]: Number of co-enabled transitions 1288 [2021-03-26 03:42:20,859 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:42:20,859 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:42:20,859 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 7 [2021-03-26 03:42:20,860 INFO L480 AbstractCegarLoop]: Abstraction has has 73 places, 72 transitions, 211 flow [2021-03-26 03:42:20,860 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 287.6666666666667) internal successors, (863), 3 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:42:20,860 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:42:20,860 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:42:20,860 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-26 03:42:20,861 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr14INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-26 03:42:20,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:42:20,861 INFO L82 PathProgramCache]: Analyzing trace with hash -939585247, now seen corresponding path program 1 times [2021-03-26 03:42:20,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:42:20,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908045353] [2021-03-26 03:42:20,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:42:20,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:42:21,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:42:21,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:42:21,019 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:42:21,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 03:42:21,027 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-26 03:42:21,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 03:42:21,056 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-26 03:42:21,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 03:42:21,090 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-26 03:42:21,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 03:42:21,125 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-26 03:42:21,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-26 03:42:21,174 INFO L142 QuantifierPusher]: treesize reduction 36, result has 58.6 percent of original size [2021-03-26 03:42:21,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-03-26 03:42:21,224 INFO L142 QuantifierPusher]: treesize reduction 45, result has 59.1 percent of original size [2021-03-26 03:42:21,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-03-26 03:42:21,277 INFO L142 QuantifierPusher]: treesize reduction 54, result has 57.5 percent of original size [2021-03-26 03:42:21,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-03-26 03:42:21,336 INFO L142 QuantifierPusher]: treesize reduction 63, result has 54.3 percent of original size [2021-03-26 03:42:21,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-03-26 03:42:21,405 INFO L142 QuantifierPusher]: treesize reduction 72, result has 53.5 percent of original size [2021-03-26 03:42:21,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 83 [2021-03-26 03:42:21,492 INFO L142 QuantifierPusher]: treesize reduction 81, result has 52.9 percent of original size [2021-03-26 03:42:21,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 91 [2021-03-26 03:42:21,594 INFO L142 QuantifierPusher]: treesize reduction 90, result has 52.4 percent of original size [2021-03-26 03:42:21,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 99 [2021-03-26 03:42:21,703 INFO L142 QuantifierPusher]: treesize reduction 108, result has 48.8 percent of original size [2021-03-26 03:42:21,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-03-26 03:42:21,782 INFO L142 QuantifierPusher]: treesize reduction 117, result has 48.7 percent of original size [2021-03-26 03:42:21,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 111 [2021-03-26 03:42:21,875 INFO L142 QuantifierPusher]: treesize reduction 126, result has 47.3 percent of original size [2021-03-26 03:42:21,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 113 [2021-03-26 03:42:21,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 03:42:21,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908045353] [2021-03-26 03:42:21,954 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:42:21,954 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-26 03:42:21,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219366518] [2021-03-26 03:42:21,955 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-26 03:42:21,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:42:21,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-26 03:42:21,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2021-03-26 03:42:21,958 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 303 [2021-03-26 03:42:21,960 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 72 transitions, 211 flow. Second operand has 17 states, 17 states have (on average 271.94117647058823) internal successors, (4623), 17 states have internal predecessors, (4623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:42:21,960 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:42:21,960 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 303 [2021-03-26 03:42:21,960 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:42:52,078 INFO L129 PetriNetUnfolder]: 307504/366103 cut-off events. [2021-03-26 03:42:52,078 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:42:55,151 INFO L84 FinitePrefix]: Finished finitePrefix Result has 710210 conditions, 366103 events. 307504/366103 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 19032. Compared 1975330 event pairs, 98305 based on Foata normal form. 1/360671 useless extension candidates. Maximal degree in co-relation 710196. Up to 122881 conditions per place. [2021-03-26 03:42:57,116 INFO L132 encePairwiseOnDemand]: 287/303 looper letters, 119 selfloop transitions, 15 changer transitions 0/190 dead transitions. [2021-03-26 03:42:57,116 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 190 transitions, 715 flow [2021-03-26 03:42:57,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-03-26 03:42:57,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-03-26 03:42:57,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4742 transitions. [2021-03-26 03:42:57,122 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9205979421471558 [2021-03-26 03:42:57,122 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 4742 transitions. [2021-03-26 03:42:57,122 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 4742 transitions. [2021-03-26 03:42:57,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:42:57,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 4742 transitions. [2021-03-26 03:42:57,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 278.94117647058823) internal successors, (4742), 17 states have internal predecessors, (4742), 0 states have call successors, (0), 0 states 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 03:42:57,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 303.0) internal successors, (5454), 18 states have internal predecessors, (5454), 0 states have call successors, (0), 0 states 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 03:42:57,134 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 303.0) internal successors, (5454), 18 states have internal predecessors, (5454), 0 states have call successors, (0), 0 states 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 03:42:57,134 INFO L185 Difference]: Start difference. First operand has 73 places, 72 transitions, 211 flow. Second operand 17 states and 4742 transitions. [2021-03-26 03:42:57,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 190 transitions, 715 flow [2021-03-26 03:42:57,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 190 transitions, 714 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 03:42:57,141 INFO L241 Difference]: Finished difference. Result has 103 places, 86 transitions, 327 flow [2021-03-26 03:42:57,141 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=303, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=327, PETRI_PLACES=103, PETRI_TRANSITIONS=86} [2021-03-26 03:42:57,141 INFO L343 CegarLoopForPetriNet]: 92 programPoint places, 11 predicate places. [2021-03-26 03:42:57,141 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:42:57,141 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 103 places, 86 transitions, 327 flow [2021-03-26 03:42:57,141 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 103 places, 86 transitions, 327 flow [2021-03-26 03:42:57,142 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 103 places, 86 transitions, 327 flow [2021-03-26 03:42:57,174 INFO L129 PetriNetUnfolder]: 349/747 cut-off events. [2021-03-26 03:42:57,174 INFO L130 PetriNetUnfolder]: For 29/29 co-relation queries the response was YES. [2021-03-26 03:42:57,176 INFO L84 FinitePrefix]: Finished finitePrefix Result has 873 conditions, 747 events. 349/747 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 3986 event pairs, 0 based on Foata normal form. 0/638 useless extension candidates. Maximal degree in co-relation 845. Up to 183 conditions per place. [2021-03-26 03:42:57,181 INFO L142 LiptonReduction]: Number of co-enabled transitions 2284 [2021-03-26 03:42:57,183 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:42:57,183 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:42:57,183 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 42 [2021-03-26 03:42:57,184 INFO L480 AbstractCegarLoop]: Abstraction has has 103 places, 86 transitions, 327 flow [2021-03-26 03:42:57,185 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 271.94117647058823) internal successors, (4623), 17 states have internal predecessors, (4623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:42:57,185 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:42:57,186 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:42:57,186 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-26 03:42:57,186 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr14INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-26 03:42:57,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:42:57,186 INFO L82 PathProgramCache]: Analyzing trace with hash 1389179091, now seen corresponding path program 2 times [2021-03-26 03:42:57,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:42:57,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018487459] [2021-03-26 03:42:57,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:42:57,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:42:57,242 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:42:57,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:42:57,243 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:42:57,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 03:42:57,247 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:42:57,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 03:42:57,254 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-26 03:42:57,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 03:42:57,264 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-26 03:42:57,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 03:42:57,278 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-26 03:42:57,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 03:42:57,297 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-26 03:42:57,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-26 03:42:57,320 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-03-26 03:42:57,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-03-26 03:42:57,348 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-03-26 03:42:57,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-26 03:42:57,383 INFO L142 QuantifierPusher]: treesize reduction 63, result has 52.3 percent of original size [2021-03-26 03:42:57,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-03-26 03:42:57,426 INFO L142 QuantifierPusher]: treesize reduction 72, result has 51.7 percent of original size [2021-03-26 03:42:57,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-03-26 03:42:57,503 INFO L142 QuantifierPusher]: treesize reduction 81, result has 51.2 percent of original size [2021-03-26 03:42:57,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-03-26 03:42:57,563 INFO L142 QuantifierPusher]: treesize reduction 90, result has 50.8 percent of original size [2021-03-26 03:42:57,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 93 [2021-03-26 03:42:57,634 INFO L142 QuantifierPusher]: treesize reduction 99, result has 50.5 percent of original size [2021-03-26 03:42:57,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-03-26 03:42:57,704 INFO L142 QuantifierPusher]: treesize reduction 108, result has 50.2 percent of original size [2021-03-26 03:42:57,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 109 [2021-03-26 03:42:57,785 INFO L142 QuantifierPusher]: treesize reduction 126, result has 47.3 percent of original size [2021-03-26 03:42:57,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 113 [2021-03-26 03:42:57,855 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 03:42:57,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018487459] [2021-03-26 03:42:57,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:42:57,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-26 03:42:57,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462748744] [2021-03-26 03:42:57,856 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-26 03:42:57,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:42:57,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-26 03:42:57,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2021-03-26 03:42:57,859 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 303 [2021-03-26 03:42:57,861 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 86 transitions, 327 flow. Second operand has 17 states, 17 states have (on average 271.94117647058823) internal successors, (4623), 17 states have internal predecessors, (4623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:42:57,861 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:42:57,861 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 303 [2021-03-26 03:42:57,861 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:45:46,193 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2021-03-26 03:46:12,389 INFO L129 PetriNetUnfolder]: 662849/918161 cut-off events. [2021-03-26 03:46:12,390 INFO L130 PetriNetUnfolder]: For 558549/558926 co-relation queries the response was YES. [2021-03-26 03:46:24,489 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1901226 conditions, 918161 events. 662849/918161 cut-off events. For 558549/558926 co-relation queries the response was YES. Maximal size of possible extension queue 67309. Compared 8505366 event pairs, 135171 based on Foata normal form. 1/860560 useless extension candidates. Maximal degree in co-relation 1901197. Up to 172078 conditions per place. [2021-03-26 03:46:30,839 INFO L132 encePairwiseOnDemand]: 287/303 looper letters, 186 selfloop transitions, 24 changer transitions 0/266 dead transitions. [2021-03-26 03:46:30,839 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 266 transitions, 1605 flow [2021-03-26 03:46:30,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-03-26 03:46:30,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-03-26 03:46:30,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4742 transitions. [2021-03-26 03:46:30,853 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9205979421471558 [2021-03-26 03:46:30,853 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 4742 transitions. [2021-03-26 03:46:30,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 4742 transitions. [2021-03-26 03:46:30,855 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:46:30,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 4742 transitions. [2021-03-26 03:46:30,880 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 278.94117647058823) internal successors, (4742), 17 states have internal predecessors, (4742), 0 states have call successors, (0), 0 states 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 03:46:30,884 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 303.0) internal successors, (5454), 18 states have internal predecessors, (5454), 0 states have call successors, (0), 0 states 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 03:46:30,885 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 303.0) internal successors, (5454), 18 states have internal predecessors, (5454), 0 states have call successors, (0), 0 states 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 03:46:30,885 INFO L185 Difference]: Start difference. First operand has 103 places, 86 transitions, 327 flow. Second operand 17 states and 4742 transitions. [2021-03-26 03:46:30,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 266 transitions, 1605 flow [2021-03-26 03:46:31,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 266 transitions, 1590 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 03:46:31,269 INFO L241 Difference]: Finished difference. Result has 133 places, 108 transitions, 570 flow [2021-03-26 03:46:31,269 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=303, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=570, PETRI_PLACES=133, PETRI_TRANSITIONS=108} [2021-03-26 03:46:31,269 INFO L343 CegarLoopForPetriNet]: 92 programPoint places, 41 predicate places. [2021-03-26 03:46:31,270 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:46:31,270 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 133 places, 108 transitions, 570 flow [2021-03-26 03:46:31,270 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 133 places, 108 transitions, 570 flow [2021-03-26 03:46:31,270 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 133 places, 108 transitions, 570 flow [2021-03-26 03:46:31,417 INFO L129 PetriNetUnfolder]: 1124/2566 cut-off events. [2021-03-26 03:46:31,417 INFO L130 PetriNetUnfolder]: For 329/352 co-relation queries the response was YES. [2021-03-26 03:46:31,429 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3078 conditions, 2566 events. 1124/2566 cut-off events. For 329/352 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 20134 event pairs, 0 based on Foata normal form. 0/2100 useless extension candidates. Maximal degree in co-relation 3035. Up to 570 conditions per place. [2021-03-26 03:46:31,455 INFO L142 LiptonReduction]: Number of co-enabled transitions 3756 [2021-03-26 03:46:31,459 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:46:31,460 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:46:31,460 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 190 [2021-03-26 03:46:31,477 INFO L480 AbstractCegarLoop]: Abstraction has has 133 places, 108 transitions, 570 flow [2021-03-26 03:46:31,478 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 271.94117647058823) internal successors, (4623), 17 states have internal predecessors, (4623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:46:31,478 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:46:31,478 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:46:31,478 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-26 03:46:31,479 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr14INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-26 03:46:31,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:46:31,479 INFO L82 PathProgramCache]: Analyzing trace with hash -1824567843, now seen corresponding path program 3 times [2021-03-26 03:46:31,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:46:31,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153615915] [2021-03-26 03:46:31,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:46:31,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:46:31,617 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:46:31,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:46:31,619 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:46:31,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 03:46:31,640 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:46:31,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 03:46:31,648 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-26 03:46:31,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 03:46:31,658 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-26 03:46:31,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 03:46:31,671 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-26 03:46:31,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 03:46:31,698 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-26 03:46:31,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-26 03:46:31,733 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-03-26 03:46:31,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-03-26 03:46:31,767 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-03-26 03:46:31,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-26 03:46:31,816 INFO L142 QuantifierPusher]: treesize reduction 63, result has 52.3 percent of original size [2021-03-26 03:46:31,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-03-26 03:46:31,884 INFO L142 QuantifierPusher]: treesize reduction 72, result has 51.7 percent of original size [2021-03-26 03:46:31,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-03-26 03:46:31,944 INFO L142 QuantifierPusher]: treesize reduction 81, result has 51.2 percent of original size [2021-03-26 03:46:31,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-03-26 03:46:32,013 INFO L142 QuantifierPusher]: treesize reduction 90, result has 50.8 percent of original size [2021-03-26 03:46:32,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 93 [2021-03-26 03:46:32,101 INFO L142 QuantifierPusher]: treesize reduction 99, result has 50.5 percent of original size [2021-03-26 03:46:32,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-03-26 03:46:32,179 INFO L142 QuantifierPusher]: treesize reduction 117, result has 48.7 percent of original size [2021-03-26 03:46:32,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 111 [2021-03-26 03:46:32,272 INFO L142 QuantifierPusher]: treesize reduction 126, result has 47.3 percent of original size [2021-03-26 03:46:32,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 113 [2021-03-26 03:46:32,395 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 03:46:32,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153615915] [2021-03-26 03:46:32,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:46:32,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-26 03:46:32,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178098142] [2021-03-26 03:46:32,396 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-26 03:46:32,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:46:32,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-26 03:46:32,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2021-03-26 03:46:32,398 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 303 [2021-03-26 03:46:32,400 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 108 transitions, 570 flow. Second operand has 17 states, 17 states have (on average 271.94117647058823) internal successors, (4623), 17 states have internal predecessors, (4623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:46:32,400 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:46:32,400 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 303 [2021-03-26 03:46:32,400 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand