/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/mcr/example_13.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 17:53:08,257 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 17:53:08,258 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 17:53:08,281 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 17:53:08,282 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 17:53:08,284 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 17:53:08,286 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 17:53:08,290 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 17:53:08,292 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 17:53:08,295 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 17:53:08,295 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 17:53:08,296 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 17:53:08,296 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 17:53:08,298 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 17:53:08,299 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 17:53:08,300 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 17:53:08,301 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 17:53:08,302 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 17:53:08,304 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 17:53:08,310 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 17:53:08,311 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 17:53:08,312 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 17:53:08,312 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 17:53:08,314 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 17:53:08,318 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-25 17:53:08,321 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-25 17:53:08,322 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-25 17:53:08,323 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-25 17:53:08,323 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-25 17:53:08,324 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-25 17:53:08,324 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-25 17:53:08,324 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-25 17:53:08,325 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-25 17:53:08,325 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 17:53:08,325 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 17:53:08,325 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 17:53:08,326 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbe.epf [2021-03-25 17:53:08,358 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 17:53:08,358 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 17:53:08,360 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 17:53:08,361 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 17:53:08,361 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 17:53:08,361 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 17:53:08,361 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 17:53:08,361 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 17:53:08,361 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 17:53:08,361 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 17:53:08,362 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 17:53:08,362 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 17:53:08,362 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 17:53:08,362 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 17:53:08,362 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 17:53:08,363 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 17:53:08,363 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 17:53:08,363 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 17:53:08,363 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 17:53:08,363 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 17:53:08,363 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 17:53:08,363 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 17:53:08,364 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 17:53:08,364 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 17:53:08,364 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 17:53:08,364 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 17:53:08,364 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 17:53:08,364 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 17:53:08,364 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 17:53:08,364 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 17:53:08,610 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 17:53:08,623 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 17:53:08,625 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 17:53:08,626 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-25 17:53:08,626 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-25 17:53:08,627 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_13.bpl [2021-03-25 17:53:08,627 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_13.bpl' [2021-03-25 17:53:08,664 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 17:53:08,665 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-25 17:53:08,666 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 17:53:08,666 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 17:53:08,666 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 17:53:08,675 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 05:53:08" (1/1) ... [2021-03-25 17:53:08,682 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 05:53:08" (1/1) ... [2021-03-25 17:53:08,688 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 17:53:08,689 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 17:53:08,690 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 17:53:08,690 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 17:53:08,695 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 05:53:08" (1/1) ... [2021-03-25 17:53:08,696 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 05:53:08" (1/1) ... [2021-03-25 17:53:08,697 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 05:53:08" (1/1) ... [2021-03-25 17:53:08,697 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 05:53:08" (1/1) ... [2021-03-25 17:53:08,701 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 05:53:08" (1/1) ... [2021-03-25 17:53:08,701 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 05:53:08" (1/1) ... [2021-03-25 17:53:08,702 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 05:53:08" (1/1) ... [2021-03-25 17:53:08,703 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 17:53:08,704 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 17:53:08,704 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 17:53:08,704 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 17:53:08,705 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 05:53:08" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 17:53:08,771 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2021-03-25 17:53:08,771 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2021-03-25 17:53:08,772 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2021-03-25 17:53:08,773 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2021-03-25 17:53:08,773 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2021-03-25 17:53:08,773 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2021-03-25 17:53:08,773 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2021-03-25 17:53:08,773 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2021-03-25 17:53:08,773 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2021-03-25 17:53:08,773 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2021-03-25 17:53:08,773 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2021-03-25 17:53:08,774 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2021-03-25 17:53:08,774 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2021-03-25 17:53:08,774 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2021-03-25 17:53:08,774 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2021-03-25 17:53:08,774 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_9 given in one single declaration [2021-03-25 17:53:08,774 INFO L130 BoogieDeclarations]: Found specification of procedure set_9 [2021-03-25 17:53:08,775 INFO L138 BoogieDeclarations]: Found implementation of procedure set_9 [2021-03-25 17:53:08,775 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-25 17:53:08,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 17:53:08,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 17:53:08,776 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_12 given in one single declaration [2021-03-25 17:53:08,776 INFO L130 BoogieDeclarations]: Found specification of procedure set_12 [2021-03-25 17:53:08,776 INFO L138 BoogieDeclarations]: Found implementation of procedure set_12 [2021-03-25 17:53:08,776 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_5 given in one single declaration [2021-03-25 17:53:08,777 INFO L130 BoogieDeclarations]: Found specification of procedure set_5 [2021-03-25 17:53:08,777 INFO L138 BoogieDeclarations]: Found implementation of procedure set_5 [2021-03-25 17:53:08,777 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_6 given in one single declaration [2021-03-25 17:53:08,777 INFO L130 BoogieDeclarations]: Found specification of procedure set_6 [2021-03-25 17:53:08,777 INFO L138 BoogieDeclarations]: Found implementation of procedure set_6 [2021-03-25 17:53:08,778 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_10 given in one single declaration [2021-03-25 17:53:08,778 INFO L130 BoogieDeclarations]: Found specification of procedure set_10 [2021-03-25 17:53:08,778 INFO L138 BoogieDeclarations]: Found implementation of procedure set_10 [2021-03-25 17:53:08,778 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_7 given in one single declaration [2021-03-25 17:53:08,778 INFO L130 BoogieDeclarations]: Found specification of procedure set_7 [2021-03-25 17:53:08,778 INFO L138 BoogieDeclarations]: Found implementation of procedure set_7 [2021-03-25 17:53:08,778 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_11 given in one single declaration [2021-03-25 17:53:08,779 INFO L130 BoogieDeclarations]: Found specification of procedure set_11 [2021-03-25 17:53:08,779 INFO L138 BoogieDeclarations]: Found implementation of procedure set_11 [2021-03-25 17:53:08,779 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_8 given in one single declaration [2021-03-25 17:53:08,779 INFO L130 BoogieDeclarations]: Found specification of procedure set_8 [2021-03-25 17:53:08,779 INFO L138 BoogieDeclarations]: Found implementation of procedure set_8 [2021-03-25 17:53:08,780 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-25 17:53:08,970 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 17:53:08,971 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-25 17:53:08,972 INFO L202 PluginConnector]: Adding new model example_13.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 05:53:08 BoogieIcfgContainer [2021-03-25 17:53:08,972 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 17:53:08,973 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 17:53:08,973 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 17:53:08,975 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 17:53:08,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 05:53:08" (1/2) ... [2021-03-25 17:53:08,976 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7da2fe4b and model type example_13.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 05:53:08, skipping insertion in model container [2021-03-25 17:53:08,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_13.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 05:53:08" (2/2) ... [2021-03-25 17:53:08,977 INFO L111 eAbstractionObserver]: Analyzing ICFG example_13.bpl [2021-03-25 17:53:08,993 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 17:53:08,995 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 17:53:08,996 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 17:53:09,186 INFO L149 ThreadInstanceAdder]: Constructed 169 joinOtherThreadTransitions. [2021-03-25 17:53:09,199 INFO L253 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2021-03-25 17:53:09,221 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 17:53:09,221 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 17:53:09,221 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 17:53:09,221 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 17:53:09,221 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 17:53:09,221 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 17:53:09,222 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 17:53:09,222 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 17:53:09,231 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 108 places, 224 transitions, 1020 flow [2021-03-25 17:53:12,482 INFO L129 PetriNetUnfolder]: 45057/53290 cut-off events. [2021-03-25 17:53:12,482 INFO L130 PetriNetUnfolder]: For 53248/53248 co-relation queries the response was YES. [2021-03-25 17:53:12,752 INFO L84 FinitePrefix]: Finished finitePrefix Result has 106578 conditions, 53290 events. 45057/53290 cut-off events. For 53248/53248 co-relation queries the response was YES. Maximal size of possible extension queue 1912. Compared 211898 event pairs, 0 based on Foata normal form. 0/53289 useless extension candidates. Maximal degree in co-relation 49214. Up to 12012 conditions per place. [2021-03-25 17:53:12,752 INFO L82 GeneralOperation]: Start removeDead. Operand has 108 places, 224 transitions, 1020 flow [2021-03-25 17:53:13,062 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 93 places, 209 transitions, 964 flow [2021-03-25 17:53:13,063 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 17:53:13,073 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 93 places, 209 transitions, 964 flow [2021-03-25 17:53:13,079 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 93 places, 209 transitions, 964 flow [2021-03-25 17:53:13,081 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 93 places, 209 transitions, 964 flow [2021-03-25 17:53:15,819 INFO L129 PetriNetUnfolder]: 45057/53288 cut-off events. [2021-03-25 17:53:15,820 INFO L130 PetriNetUnfolder]: For 53248/53248 co-relation queries the response was YES. [2021-03-25 17:53:16,003 INFO L84 FinitePrefix]: Finished finitePrefix Result has 106576 conditions, 53288 events. 45057/53288 cut-off events. For 53248/53248 co-relation queries the response was YES. Maximal size of possible extension queue 1912. Compared 223878 event pairs, 0 based on Foata normal form. 0/53288 useless extension candidates. Maximal degree in co-relation 49214. Up to 12012 conditions per place. [2021-03-25 17:53:16,596 INFO L142 LiptonReduction]: Number of co-enabled transitions 8424 [2021-03-25 17:53:16,875 INFO L154 LiptonReduction]: Checked pairs total: 2262 [2021-03-25 17:53:16,875 INFO L156 LiptonReduction]: Total number of compositions: 13 [2021-03-25 17:53:16,877 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 3815 [2021-03-25 17:53:19,034 INFO L129 PetriNetUnfolder]: 45057/53274 cut-off events. [2021-03-25 17:53:19,035 INFO L130 PetriNetUnfolder]: For 53248/53248 co-relation queries the response was YES. [2021-03-25 17:53:19,035 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 17:53:19,035 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] [2021-03-25 17:53:19,036 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_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]=== [2021-03-25 17:53:19,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 17:53:19,039 INFO L82 PathProgramCache]: Analyzing trace with hash -1397032023, now seen corresponding path program 1 times [2021-03-25 17:53:19,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 17:53:19,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147403049] [2021-03-25 17:53:19,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 17:53:19,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 17:53:19,140 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:53:19,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 17:53:19,148 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:53:19,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 17:53:19,154 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:53:19,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 17:53:19,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 17:53:19,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147403049] [2021-03-25 17:53:19,157 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 17:53:19,157 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 17:53:19,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128758279] [2021-03-25 17:53:19,163 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 17:53:19,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 17:53:19,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 17:53:19,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 17:53:19,174 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 237 [2021-03-25 17:53:19,177 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 196 transitions, 938 flow. Second operand has 3 states, 3 states have (on average 223.66666666666666) internal successors, (671), 3 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:53:19,177 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 17:53:19,177 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 237 [2021-03-25 17:53:19,178 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 17:53:21,850 INFO L129 PetriNetUnfolder]: 27225/32933 cut-off events. [2021-03-25 17:53:21,851 INFO L130 PetriNetUnfolder]: For 43609/43609 co-relation queries the response was YES. [2021-03-25 17:53:21,917 INFO L84 FinitePrefix]: Finished finitePrefix Result has 67467 conditions, 32933 events. 27225/32933 cut-off events. For 43609/43609 co-relation queries the response was YES. Maximal size of possible extension queue 1309. Compared 155055 event pairs, 0 based on Foata normal form. 2510/35443 useless extension candidates. Maximal degree in co-relation 49180. Up to 6435 conditions per place. [2021-03-25 17:53:22,027 INFO L132 encePairwiseOnDemand]: 229/237 looper letters, 6 selfloop transitions, 1 changer transitions 0/189 dead transitions. [2021-03-25 17:53:22,027 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 189 transitions, 917 flow [2021-03-25 17:53:22,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 17:53:22,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 17:53:22,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 683 transitions. [2021-03-25 17:53:22,040 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.960618846694796 [2021-03-25 17:53:22,041 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 683 transitions. [2021-03-25 17:53:22,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 683 transitions. [2021-03-25 17:53:22,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 17:53:22,046 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 683 transitions. [2021-03-25 17:53:22,050 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 227.66666666666666) internal successors, (683), 3 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:53:22,055 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:53:22,056 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:53:22,057 INFO L185 Difference]: Start difference. First operand has 80 places, 196 transitions, 938 flow. Second operand 3 states and 683 transitions. [2021-03-25 17:53:22,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 189 transitions, 917 flow [2021-03-25 17:53:22,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 189 transitions, 567 flow, removed 0 selfloop flow, removed 26 redundant places. [2021-03-25 17:53:22,463 INFO L241 Difference]: Finished difference. Result has 56 places, 189 transitions, 555 flow [2021-03-25 17:53:22,468 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=553, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=555, PETRI_PLACES=56, PETRI_TRANSITIONS=189} [2021-03-25 17:53:22,469 INFO L343 CegarLoopForPetriNet]: 80 programPoint places, -24 predicate places. [2021-03-25 17:53:22,469 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 17:53:22,470 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 56 places, 189 transitions, 555 flow [2021-03-25 17:53:22,470 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 56 places, 189 transitions, 555 flow [2021-03-25 17:53:22,471 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 56 places, 189 transitions, 555 flow [2021-03-25 17:53:23,320 INFO L129 PetriNetUnfolder]: 27225/32933 cut-off events. [2021-03-25 17:53:23,321 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 17:53:23,356 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32949 conditions, 32933 events. 27225/32933 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1309. Compared 141858 event pairs, 0 based on Foata normal form. 0/32933 useless extension candidates. Maximal degree in co-relation 32930. Up to 6435 conditions per place. [2021-03-25 17:53:23,498 INFO L142 LiptonReduction]: Number of co-enabled transitions 3888 [2021-03-25 17:53:23,510 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 17:53:23,510 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 17:53:23,510 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1041 [2021-03-25 17:53:23,511 INFO L480 AbstractCegarLoop]: Abstraction has has 56 places, 189 transitions, 555 flow [2021-03-25 17:53:23,511 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 223.66666666666666) internal successors, (671), 3 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:53:23,512 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 17:53:23,512 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] [2021-03-25 17:53:23,512 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 17:53:23,512 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_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]=== [2021-03-25 17:53:23,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 17:53:23,512 INFO L82 PathProgramCache]: Analyzing trace with hash 1916037355, now seen corresponding path program 1 times [2021-03-25 17:53:23,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 17:53:23,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358294669] [2021-03-25 17:53:23,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 17:53:23,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 17:53:23,541 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:53:23,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 17:53:23,542 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:53:23,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 17:53:23,544 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:53:23,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 17:53:23,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 17:53:23,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358294669] [2021-03-25 17:53:23,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 17:53:23,545 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 17:53:23,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392026640] [2021-03-25 17:53:23,546 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 17:53:23,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 17:53:23,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 17:53:23,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 17:53:23,547 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 237 [2021-03-25 17:53:23,548 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 189 transitions, 555 flow. Second operand has 3 states, 3 states have (on average 223.66666666666666) internal successors, (671), 3 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:53:23,548 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 17:53:23,548 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 237 [2021-03-25 17:53:23,548 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 17:53:24,516 INFO L129 PetriNetUnfolder]: 27214/32921 cut-off events. [2021-03-25 17:53:24,516 INFO L130 PetriNetUnfolder]: For 2610/2610 co-relation queries the response was YES. [2021-03-25 17:53:24,545 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35548 conditions, 32921 events. 27214/32921 cut-off events. For 2610/2610 co-relation queries the response was YES. Maximal size of possible extension queue 1309. Compared 154692 event pairs, 0 based on Foata normal form. 1/32922 useless extension candidates. Maximal degree in co-relation 35527. Up to 6435 conditions per place. [2021-03-25 17:53:24,623 INFO L132 encePairwiseOnDemand]: 235/237 looper letters, 12 selfloop transitions, 1 changer transitions 0/188 dead transitions. [2021-03-25 17:53:24,623 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 188 transitions, 578 flow [2021-03-25 17:53:24,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 17:53:24,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 17:53:24,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 683 transitions. [2021-03-25 17:53:24,624 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.960618846694796 [2021-03-25 17:53:24,625 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 683 transitions. [2021-03-25 17:53:24,625 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 683 transitions. [2021-03-25 17:53:24,625 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 17:53:24,625 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 683 transitions. [2021-03-25 17:53:24,626 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 227.66666666666666) internal successors, (683), 3 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:53:24,627 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:53:24,627 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:53:24,628 INFO L185 Difference]: Start difference. First operand has 56 places, 189 transitions, 555 flow. Second operand 3 states and 683 transitions. [2021-03-25 17:53:24,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 188 transitions, 578 flow [2021-03-25 17:53:24,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 188 transitions, 577 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 17:53:24,635 INFO L241 Difference]: Finished difference. Result has 57 places, 188 transitions, 553 flow [2021-03-25 17:53:24,635 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=551, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=553, PETRI_PLACES=57, PETRI_TRANSITIONS=188} [2021-03-25 17:53:24,635 INFO L343 CegarLoopForPetriNet]: 80 programPoint places, -23 predicate places. [2021-03-25 17:53:24,636 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 17:53:24,636 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 57 places, 188 transitions, 553 flow [2021-03-25 17:53:24,636 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 57 places, 188 transitions, 553 flow [2021-03-25 17:53:24,637 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 57 places, 188 transitions, 553 flow [2021-03-25 17:53:25,569 INFO L129 PetriNetUnfolder]: 27214/32921 cut-off events. [2021-03-25 17:53:25,569 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 17:53:25,616 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32938 conditions, 32921 events. 27214/32921 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1309. Compared 141673 event pairs, 0 based on Foata normal form. 0/32921 useless extension candidates. Maximal degree in co-relation 32931. Up to 6435 conditions per place. [2021-03-25 17:53:25,770 INFO L142 LiptonReduction]: Number of co-enabled transitions 3864 [2021-03-25 17:53:25,782 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 17:53:25,782 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 17:53:25,782 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1146 [2021-03-25 17:53:25,783 INFO L480 AbstractCegarLoop]: Abstraction has has 57 places, 188 transitions, 553 flow [2021-03-25 17:53:25,784 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 223.66666666666666) internal successors, (671), 3 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:53:25,784 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 17:53:25,784 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] [2021-03-25 17:53:25,784 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 17:53:25,784 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_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]=== [2021-03-25 17:53:25,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 17:53:25,785 INFO L82 PathProgramCache]: Analyzing trace with hash 1008616503, now seen corresponding path program 1 times [2021-03-25 17:53:25,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 17:53:25,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357878603] [2021-03-25 17:53:25,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 17:53:25,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 17:53:25,807 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:53:25,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 17:53:25,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:53:25,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 17:53:25,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:53:25,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 17:53:25,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 17:53:25,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357878603] [2021-03-25 17:53:25,820 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 17:53:25,820 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 17:53:25,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986987695] [2021-03-25 17:53:25,821 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 17:53:25,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 17:53:25,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 17:53:25,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 17:53:25,823 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 237 [2021-03-25 17:53:25,823 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 188 transitions, 553 flow. Second operand has 3 states, 3 states have (on average 223.66666666666666) internal successors, (671), 3 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:53:25,823 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 17:53:25,824 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 237 [2021-03-25 17:53:25,824 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 17:53:26,808 INFO L129 PetriNetUnfolder]: 27094/32789 cut-off events. [2021-03-25 17:53:26,809 INFO L130 PetriNetUnfolder]: For 2609/2609 co-relation queries the response was YES. [2021-03-25 17:53:26,867 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35406 conditions, 32789 events. 27094/32789 cut-off events. For 2609/2609 co-relation queries the response was YES. Maximal size of possible extension queue 1309. Compared 157057 event pairs, 0 based on Foata normal form. 11/32800 useless extension candidates. Maximal degree in co-relation 35398. Up to 6435 conditions per place. [2021-03-25 17:53:26,963 INFO L132 encePairwiseOnDemand]: 234/237 looper letters, 11 selfloop transitions, 1 changer transitions 0/186 dead transitions. [2021-03-25 17:53:26,963 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 186 transitions, 571 flow [2021-03-25 17:53:26,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 17:53:26,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 17:53:26,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 683 transitions. [2021-03-25 17:53:26,967 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.960618846694796 [2021-03-25 17:53:26,968 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 683 transitions. [2021-03-25 17:53:26,968 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 683 transitions. [2021-03-25 17:53:26,968 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 17:53:26,968 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 683 transitions. [2021-03-25 17:53:26,969 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 227.66666666666666) internal successors, (683), 3 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:53:26,970 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:53:26,970 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:53:26,971 INFO L185 Difference]: Start difference. First operand has 57 places, 188 transitions, 553 flow. Second operand 3 states and 683 transitions. [2021-03-25 17:53:26,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 186 transitions, 571 flow [2021-03-25 17:53:26,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 186 transitions, 570 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 17:53:26,976 INFO L241 Difference]: Finished difference. Result has 58 places, 186 transitions, 548 flow [2021-03-25 17:53:26,976 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=546, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=548, PETRI_PLACES=58, PETRI_TRANSITIONS=186} [2021-03-25 17:53:26,976 INFO L343 CegarLoopForPetriNet]: 80 programPoint places, -22 predicate places. [2021-03-25 17:53:26,976 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 17:53:26,977 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 58 places, 186 transitions, 548 flow [2021-03-25 17:53:26,978 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 58 places, 186 transitions, 548 flow [2021-03-25 17:53:26,979 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 58 places, 186 transitions, 548 flow [2021-03-25 17:53:27,730 INFO L129 PetriNetUnfolder]: 27094/32789 cut-off events. [2021-03-25 17:53:27,730 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 17:53:27,788 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32807 conditions, 32789 events. 27094/32789 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1319. Compared 141707 event pairs, 0 based on Foata normal form. 0/32789 useless extension candidates. Maximal degree in co-relation 32800. Up to 6435 conditions per place. [2021-03-25 17:53:27,976 INFO L142 LiptonReduction]: Number of co-enabled transitions 3816 [2021-03-25 17:53:27,985 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 17:53:27,985 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 17:53:27,985 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1009 [2021-03-25 17:53:27,986 INFO L480 AbstractCegarLoop]: Abstraction has has 58 places, 186 transitions, 548 flow [2021-03-25 17:53:27,986 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 223.66666666666666) internal successors, (671), 3 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:53:27,987 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 17:53:27,987 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 17:53:27,987 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 17:53:27,987 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_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]=== [2021-03-25 17:53:27,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 17:53:27,987 INFO L82 PathProgramCache]: Analyzing trace with hash 1663597145, now seen corresponding path program 1 times [2021-03-25 17:53:27,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 17:53:27,987 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948292967] [2021-03-25 17:53:27,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 17:53:27,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 17:53:28,007 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:53:28,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 17:53:28,008 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:53:28,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 17:53:28,010 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:53:28,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 17:53:28,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 17:53:28,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948292967] [2021-03-25 17:53:28,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 17:53:28,011 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 17:53:28,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731352238] [2021-03-25 17:53:28,012 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 17:53:28,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 17:53:28,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 17:53:28,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 17:53:28,013 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 237 [2021-03-25 17:53:28,013 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 186 transitions, 548 flow. Second operand has 3 states, 3 states have (on average 223.66666666666666) internal successors, (671), 3 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:53:28,013 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 17:53:28,013 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 237 [2021-03-25 17:53:28,013 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 17:53:28,663 INFO L129 PetriNetUnfolder]: 20098/24770 cut-off events. [2021-03-25 17:53:28,664 INFO L130 PetriNetUnfolder]: For 2598/2598 co-relation queries the response was YES. [2021-03-25 17:53:28,702 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26376 conditions, 24770 events. 20098/24770 cut-off events. For 2598/2598 co-relation queries the response was YES. Maximal size of possible extension queue 1309. Compared 119923 event pairs, 0 based on Foata normal form. 1012/25782 useless extension candidates. Maximal degree in co-relation 26368. Up to 6435 conditions per place. [2021-03-25 17:53:28,768 INFO L132 encePairwiseOnDemand]: 230/237 looper letters, 7 selfloop transitions, 1 changer transitions 0/180 dead transitions. [2021-03-25 17:53:28,769 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 180 transitions, 546 flow [2021-03-25 17:53:28,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 17:53:28,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 17:53:28,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 683 transitions. [2021-03-25 17:53:28,770 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.960618846694796 [2021-03-25 17:53:28,770 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 683 transitions. [2021-03-25 17:53:28,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 683 transitions. [2021-03-25 17:53:28,771 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 17:53:28,771 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 683 transitions. [2021-03-25 17:53:28,772 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 227.66666666666666) internal successors, (683), 3 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:53:28,773 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:53:28,773 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:53:28,773 INFO L185 Difference]: Start difference. First operand has 58 places, 186 transitions, 548 flow. Second operand 3 states and 683 transitions. [2021-03-25 17:53:28,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 180 transitions, 546 flow [2021-03-25 17:53:28,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 180 transitions, 545 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 17:53:28,777 INFO L241 Difference]: Finished difference. Result has 59 places, 180 transitions, 531 flow [2021-03-25 17:53:28,777 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=529, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=531, PETRI_PLACES=59, PETRI_TRANSITIONS=180} [2021-03-25 17:53:28,777 INFO L343 CegarLoopForPetriNet]: 80 programPoint places, -21 predicate places. [2021-03-25 17:53:28,777 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 17:53:28,778 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 59 places, 180 transitions, 531 flow [2021-03-25 17:53:28,778 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 59 places, 180 transitions, 531 flow [2021-03-25 17:53:28,778 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 59 places, 180 transitions, 531 flow [2021-03-25 17:53:29,342 INFO L129 PetriNetUnfolder]: 20098/24770 cut-off events. [2021-03-25 17:53:29,343 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 17:53:29,378 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24789 conditions, 24770 events. 20098/24770 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1325. Compared 109686 event pairs, 0 based on Foata normal form. 0/24770 useless extension candidates. Maximal degree in co-relation 24782. Up to 6435 conditions per place. [2021-03-25 17:53:29,500 INFO L142 LiptonReduction]: Number of co-enabled transitions 3672 [2021-03-25 17:53:29,508 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 17:53:29,509 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 17:53:29,509 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 732 [2021-03-25 17:53:29,509 INFO L480 AbstractCegarLoop]: Abstraction has has 59 places, 180 transitions, 531 flow [2021-03-25 17:53:29,510 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 223.66666666666666) internal successors, (671), 3 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:53:29,510 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 17:53:29,510 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] [2021-03-25 17:53:29,510 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-25 17:53:29,510 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_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]=== [2021-03-25 17:53:29,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 17:53:29,510 INFO L82 PathProgramCache]: Analyzing trace with hash 1135598883, now seen corresponding path program 1 times [2021-03-25 17:53:29,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 17:53:29,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614144023] [2021-03-25 17:53:29,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 17:53:29,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 17:53:29,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:53:29,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 17:53:29,524 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:53:29,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 17:53:29,526 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:53:29,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 17:53:29,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 17:53:29,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614144023] [2021-03-25 17:53:29,527 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 17:53:29,527 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 17:53:29,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128220524] [2021-03-25 17:53:29,528 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 17:53:29,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 17:53:29,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 17:53:29,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 17:53:29,529 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 237 [2021-03-25 17:53:29,529 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 180 transitions, 531 flow. Second operand has 3 states, 3 states have (on average 223.66666666666666) internal successors, (671), 3 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:53:29,529 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 17:53:29,529 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 237 [2021-03-25 17:53:29,529 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 17:53:29,894 INFO L129 PetriNetUnfolder]: 10028/12809 cut-off events. [2021-03-25 17:53:29,894 INFO L130 PetriNetUnfolder]: For 1961/1961 co-relation queries the response was YES. [2021-03-25 17:53:29,912 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13624 conditions, 12809 events. 10028/12809 cut-off events. For 1961/1961 co-relation queries the response was YES. Maximal size of possible extension queue 723. Compared 63527 event pairs, 0 based on Foata normal form. 1167/13976 useless extension candidates. Maximal degree in co-relation 13616. Up to 2860 conditions per place. [2021-03-25 17:53:29,945 INFO L132 encePairwiseOnDemand]: 228/237 looper letters, 5 selfloop transitions, 1 changer transitions 0/172 dead transitions. [2021-03-25 17:53:29,946 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 172 transitions, 519 flow [2021-03-25 17:53:29,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 17:53:29,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 17:53:29,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 683 transitions. [2021-03-25 17:53:29,947 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.960618846694796 [2021-03-25 17:53:29,948 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 683 transitions. [2021-03-25 17:53:29,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 683 transitions. [2021-03-25 17:53:29,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 17:53:29,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 683 transitions. [2021-03-25 17:53:29,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 227.66666666666666) internal successors, (683), 3 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:53:29,950 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:53:29,951 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:53:29,951 INFO L185 Difference]: Start difference. First operand has 59 places, 180 transitions, 531 flow. Second operand 3 states and 683 transitions. [2021-03-25 17:53:29,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 172 transitions, 519 flow [2021-03-25 17:53:29,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 172 transitions, 518 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 17:53:29,953 INFO L241 Difference]: Finished difference. Result has 60 places, 172 transitions, 508 flow [2021-03-25 17:53:29,954 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=508, PETRI_PLACES=60, PETRI_TRANSITIONS=172} [2021-03-25 17:53:29,954 INFO L343 CegarLoopForPetriNet]: 80 programPoint places, -20 predicate places. [2021-03-25 17:53:29,954 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 17:53:29,954 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 60 places, 172 transitions, 508 flow [2021-03-25 17:53:29,954 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 60 places, 172 transitions, 508 flow [2021-03-25 17:53:29,955 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 60 places, 172 transitions, 508 flow [2021-03-25 17:53:30,304 INFO L129 PetriNetUnfolder]: 10028/12809 cut-off events. [2021-03-25 17:53:30,305 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 17:53:30,321 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12829 conditions, 12809 events. 10028/12809 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 770. Compared 57536 event pairs, 0 based on Foata normal form. 0/12809 useless extension candidates. Maximal degree in co-relation 12822. Up to 2860 conditions per place. [2021-03-25 17:53:30,390 INFO L142 LiptonReduction]: Number of co-enabled transitions 3480 [2021-03-25 17:53:30,398 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 17:53:30,398 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 17:53:30,398 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 444 [2021-03-25 17:53:30,399 INFO L480 AbstractCegarLoop]: Abstraction has has 60 places, 172 transitions, 508 flow [2021-03-25 17:53:30,399 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 223.66666666666666) internal successors, (671), 3 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:53:30,399 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 17:53:30,399 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] [2021-03-25 17:53:30,399 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-25 17:53:30,400 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_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]=== [2021-03-25 17:53:30,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 17:53:30,400 INFO L82 PathProgramCache]: Analyzing trace with hash 1920693199, now seen corresponding path program 1 times [2021-03-25 17:53:30,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 17:53:30,400 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159376321] [2021-03-25 17:53:30,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 17:53:30,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 17:53:30,410 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:53:30,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 17:53:30,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:53:30,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 17:53:30,413 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:53:30,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 17:53:30,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 17:53:30,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159376321] [2021-03-25 17:53:30,414 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 17:53:30,414 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 17:53:30,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918743130] [2021-03-25 17:53:30,415 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 17:53:30,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 17:53:30,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 17:53:30,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 17:53:30,416 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 237 [2021-03-25 17:53:30,416 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 172 transitions, 508 flow. Second operand has 3 states, 3 states have (on average 223.66666666666666) internal successors, (671), 3 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:53:30,416 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 17:53:30,416 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 237 [2021-03-25 17:53:30,417 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 17:53:30,562 INFO L129 PetriNetUnfolder]: 3131/4198 cut-off events. [2021-03-25 17:53:30,562 INFO L130 PetriNetUnfolder]: For 1040/1040 co-relation queries the response was YES. [2021-03-25 17:53:30,568 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4221 conditions, 4198 events. 3131/4198 cut-off events. For 1040/1040 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 19986 event pairs, 0 based on Foata normal form. 1039/5237 useless extension candidates. Maximal degree in co-relation 4213. Up to 660 conditions per place. [2021-03-25 17:53:30,579 INFO L132 encePairwiseOnDemand]: 224/237 looper letters, 1 selfloop transitions, 1 changer transitions 0/148 dead transitions. [2021-03-25 17:53:30,579 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 148 transitions, 440 flow [2021-03-25 17:53:30,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 17:53:30,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 17:53:30,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 683 transitions. [2021-03-25 17:53:30,581 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.960618846694796 [2021-03-25 17:53:30,581 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 683 transitions. [2021-03-25 17:53:30,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 683 transitions. [2021-03-25 17:53:30,581 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 17:53:30,581 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 683 transitions. [2021-03-25 17:53:30,582 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 227.66666666666666) internal successors, (683), 3 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:53:30,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:53:30,584 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:53:30,584 INFO L185 Difference]: Start difference. First operand has 60 places, 172 transitions, 508 flow. Second operand 3 states and 683 transitions. [2021-03-25 17:53:30,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 148 transitions, 440 flow [2021-03-25 17:53:30,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 148 transitions, 439 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 17:53:30,586 INFO L241 Difference]: Finished difference. Result has 61 places, 148 transitions, 437 flow [2021-03-25 17:53:30,587 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=435, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=437, PETRI_PLACES=61, PETRI_TRANSITIONS=148} [2021-03-25 17:53:30,587 INFO L343 CegarLoopForPetriNet]: 80 programPoint places, -19 predicate places. [2021-03-25 17:53:30,587 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 17:53:30,588 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 148 transitions, 437 flow [2021-03-25 17:53:30,588 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 61 places, 148 transitions, 437 flow [2021-03-25 17:53:30,588 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 61 places, 148 transitions, 437 flow [2021-03-25 17:53:30,693 INFO L129 PetriNetUnfolder]: 3131/4198 cut-off events. [2021-03-25 17:53:30,693 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 17:53:30,698 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4219 conditions, 4198 events. 3131/4198 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 17831 event pairs, 0 based on Foata normal form. 0/4198 useless extension candidates. Maximal degree in co-relation 4212. Up to 660 conditions per place. [2021-03-25 17:53:30,716 INFO L142 LiptonReduction]: Number of co-enabled transitions 2928 [2021-03-25 17:53:30,722 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 17:53:30,722 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 17:53:30,722 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 135 [2021-03-25 17:53:30,723 INFO L480 AbstractCegarLoop]: Abstraction has has 61 places, 148 transitions, 437 flow [2021-03-25 17:53:30,723 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 223.66666666666666) internal successors, (671), 3 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:53:30,723 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 17:53:30,723 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] [2021-03-25 17:53:30,723 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-25 17:53:30,723 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_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]=== [2021-03-25 17:53:30,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 17:53:30,724 INFO L82 PathProgramCache]: Analyzing trace with hash -287933799, now seen corresponding path program 1 times [2021-03-25 17:53:30,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 17:53:30,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901692303] [2021-03-25 17:53:30,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 17:53:30,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 17:53:30,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:53:30,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 17:53:30,738 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:53:30,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 17:53:30,740 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:53:30,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 17:53:30,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 17:53:30,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901692303] [2021-03-25 17:53:30,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 17:53:30,741 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 17:53:30,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884313454] [2021-03-25 17:53:30,741 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 17:53:30,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 17:53:30,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 17:53:30,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 17:53:30,742 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 237 [2021-03-25 17:53:30,742 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 148 transitions, 437 flow. Second operand has 3 states, 3 states have (on average 223.66666666666666) internal successors, (671), 3 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:53:30,742 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 17:53:30,742 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 237 [2021-03-25 17:53:30,742 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 17:53:30,789 INFO L129 PetriNetUnfolder]: 1080/1560 cut-off events. [2021-03-25 17:53:30,790 INFO L130 PetriNetUnfolder]: For 386/386 co-relation queries the response was YES. [2021-03-25 17:53:30,792 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1650 conditions, 1560 events. 1080/1560 cut-off events. For 386/386 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 6659 event pairs, 0 based on Foata normal form. 319/1879 useless extension candidates. Maximal degree in co-relation 1642. Up to 280 conditions per place. [2021-03-25 17:53:30,794 INFO L132 encePairwiseOnDemand]: 227/237 looper letters, 3 selfloop transitions, 1 changer transitions 0/139 dead transitions. [2021-03-25 17:53:30,795 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 139 transitions, 418 flow [2021-03-25 17:53:30,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 17:53:30,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 17:53:30,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 682 transitions. [2021-03-25 17:53:30,796 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9592123769338959 [2021-03-25 17:53:30,796 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 682 transitions. [2021-03-25 17:53:30,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 682 transitions. [2021-03-25 17:53:30,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 17:53:30,796 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 682 transitions. [2021-03-25 17:53:30,798 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 227.33333333333334) internal successors, (682), 3 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:53:30,799 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:53:30,799 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:53:30,799 INFO L185 Difference]: Start difference. First operand has 61 places, 148 transitions, 437 flow. Second operand 3 states and 682 transitions. [2021-03-25 17:53:30,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 139 transitions, 418 flow [2021-03-25 17:53:30,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 139 transitions, 417 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 17:53:30,801 INFO L241 Difference]: Finished difference. Result has 62 places, 139 transitions, 411 flow [2021-03-25 17:53:30,801 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=409, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=411, PETRI_PLACES=62, PETRI_TRANSITIONS=139} [2021-03-25 17:53:30,801 INFO L343 CegarLoopForPetriNet]: 80 programPoint places, -18 predicate places. [2021-03-25 17:53:30,801 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 17:53:30,801 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 62 places, 139 transitions, 411 flow [2021-03-25 17:53:30,802 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 62 places, 139 transitions, 411 flow [2021-03-25 17:53:30,802 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 62 places, 139 transitions, 411 flow [2021-03-25 17:53:30,838 INFO L129 PetriNetUnfolder]: 1080/1560 cut-off events. [2021-03-25 17:53:30,838 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 17:53:30,840 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1582 conditions, 1560 events. 1080/1560 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 6292 event pairs, 0 based on Foata normal form. 0/1560 useless extension candidates. Maximal degree in co-relation 1575. Up to 280 conditions per place. [2021-03-25 17:53:30,847 INFO L142 LiptonReduction]: Number of co-enabled transitions 2712 [2021-03-25 17:53:30,851 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 17:53:30,852 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 17:53:30,852 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 51 [2021-03-25 17:53:30,852 INFO L480 AbstractCegarLoop]: Abstraction has has 62 places, 139 transitions, 411 flow [2021-03-25 17:53:30,853 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 223.66666666666666) internal successors, (671), 3 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:53:30,853 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 17:53:30,853 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] [2021-03-25 17:53:30,853 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-25 17:53:30,853 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_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]=== [2021-03-25 17:53:30,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 17:53:30,853 INFO L82 PathProgramCache]: Analyzing trace with hash 1930560167, now seen corresponding path program 1 times [2021-03-25 17:53:30,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 17:53:30,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519918465] [2021-03-25 17:53:30,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 17:53:30,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 17:53:30,875 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:53:30,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 17:53:30,877 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:53:30,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 17:53:30,879 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:53:30,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 17:53:30,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 17:53:30,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519918465] [2021-03-25 17:53:30,880 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 17:53:30,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 17:53:30,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245001108] [2021-03-25 17:53:30,880 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 17:53:30,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 17:53:30,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 17:53:30,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 17:53:30,881 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 237 [2021-03-25 17:53:30,882 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 139 transitions, 411 flow. Second operand has 3 states, 3 states have (on average 223.66666666666666) internal successors, (671), 3 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:53:30,882 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 17:53:30,882 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 237 [2021-03-25 17:53:30,882 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 17:53:30,928 INFO L129 PetriNetUnfolder]: 940/1392 cut-off events. [2021-03-25 17:53:30,928 INFO L130 PetriNetUnfolder]: For 158/158 co-relation queries the response was YES. [2021-03-25 17:53:30,929 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1553 conditions, 1392 events. 940/1392 cut-off events. For 158/158 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 5996 event pairs, 0 based on Foata normal form. 21/1413 useless extension candidates. Maximal degree in co-relation 1545. Up to 280 conditions per place. [2021-03-25 17:53:30,932 INFO L132 encePairwiseOnDemand]: 233/237 looper letters, 9 selfloop transitions, 1 changer transitions 0/136 dead transitions. [2021-03-25 17:53:30,932 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 136 transitions, 422 flow [2021-03-25 17:53:30,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 17:53:30,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 17:53:30,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 682 transitions. [2021-03-25 17:53:30,933 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9592123769338959 [2021-03-25 17:53:30,933 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 682 transitions. [2021-03-25 17:53:30,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 682 transitions. [2021-03-25 17:53:30,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 17:53:30,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 682 transitions. [2021-03-25 17:53:30,935 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 227.33333333333334) internal successors, (682), 3 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:53:30,936 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:53:30,936 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:53:30,936 INFO L185 Difference]: Start difference. First operand has 62 places, 139 transitions, 411 flow. Second operand 3 states and 682 transitions. [2021-03-25 17:53:30,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 136 transitions, 422 flow [2021-03-25 17:53:30,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 136 transitions, 421 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 17:53:30,938 INFO L241 Difference]: Finished difference. Result has 63 places, 136 transitions, 403 flow [2021-03-25 17:53:30,938 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=401, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=403, PETRI_PLACES=63, PETRI_TRANSITIONS=136} [2021-03-25 17:53:30,938 INFO L343 CegarLoopForPetriNet]: 80 programPoint places, -17 predicate places. [2021-03-25 17:53:30,938 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 17:53:30,938 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 63 places, 136 transitions, 403 flow [2021-03-25 17:53:30,939 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 63 places, 136 transitions, 403 flow [2021-03-25 17:53:30,939 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 63 places, 136 transitions, 403 flow [2021-03-25 17:53:30,969 INFO L129 PetriNetUnfolder]: 940/1392 cut-off events. [2021-03-25 17:53:30,969 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 17:53:30,971 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1415 conditions, 1392 events. 940/1392 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 5643 event pairs, 0 based on Foata normal form. 0/1392 useless extension candidates. Maximal degree in co-relation 1408. Up to 280 conditions per place. [2021-03-25 17:53:30,976 INFO L142 LiptonReduction]: Number of co-enabled transitions 2640 [2021-03-25 17:53:30,981 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 17:53:30,981 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 17:53:30,981 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 43 [2021-03-25 17:53:30,981 INFO L480 AbstractCegarLoop]: Abstraction has has 63 places, 136 transitions, 403 flow [2021-03-25 17:53:30,982 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 223.66666666666666) internal successors, (671), 3 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:53:30,982 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 17:53:30,982 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] [2021-03-25 17:53:30,982 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-25 17:53:30,982 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_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]=== [2021-03-25 17:53:30,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 17:53:30,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1269193419, now seen corresponding path program 1 times [2021-03-25 17:53:30,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 17:53:30,983 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121737207] [2021-03-25 17:53:30,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 17:53:30,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 17:53:30,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:53:30,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 17:53:30,994 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:53:30,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 17:53:30,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:53:30,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 17:53:30,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 17:53:30,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121737207] [2021-03-25 17:53:30,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 17:53:30,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 17:53:30,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960339458] [2021-03-25 17:53:30,997 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 17:53:30,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 17:53:30,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 17:53:30,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 17:53:30,998 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 237 [2021-03-25 17:53:30,998 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 136 transitions, 403 flow. Second operand has 3 states, 3 states have (on average 223.66666666666666) internal successors, (671), 3 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:53:30,998 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 17:53:30,998 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 237 [2021-03-25 17:53:30,998 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 17:53:31,032 INFO L129 PetriNetUnfolder]: 611/972 cut-off events. [2021-03-25 17:53:31,032 INFO L130 PetriNetUnfolder]: For 137/137 co-relation queries the response was YES. [2021-03-25 17:53:31,033 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1064 conditions, 972 events. 611/972 cut-off events. For 137/137 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4185 event pairs, 0 based on Foata normal form. 70/1042 useless extension candidates. Maximal degree in co-relation 1056. Up to 165 conditions per place. [2021-03-25 17:53:31,035 INFO L132 encePairwiseOnDemand]: 231/237 looper letters, 7 selfloop transitions, 1 changer transitions 0/131 dead transitions. [2021-03-25 17:53:31,035 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 131 transitions, 404 flow [2021-03-25 17:53:31,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 17:53:31,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 17:53:31,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 682 transitions. [2021-03-25 17:53:31,036 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9592123769338959 [2021-03-25 17:53:31,036 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 682 transitions. [2021-03-25 17:53:31,036 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 682 transitions. [2021-03-25 17:53:31,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 17:53:31,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 682 transitions. [2021-03-25 17:53:31,038 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 227.33333333333334) internal successors, (682), 3 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:53:31,038 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:53:31,039 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:53:31,039 INFO L185 Difference]: Start difference. First operand has 63 places, 136 transitions, 403 flow. Second operand 3 states and 682 transitions. [2021-03-25 17:53:31,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 131 transitions, 404 flow [2021-03-25 17:53:31,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 131 transitions, 403 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 17:53:31,040 INFO L241 Difference]: Finished difference. Result has 64 places, 131 transitions, 389 flow [2021-03-25 17:53:31,041 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=389, PETRI_PLACES=64, PETRI_TRANSITIONS=131} [2021-03-25 17:53:31,041 INFO L343 CegarLoopForPetriNet]: 80 programPoint places, -16 predicate places. [2021-03-25 17:53:31,041 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 17:53:31,041 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 64 places, 131 transitions, 389 flow [2021-03-25 17:53:31,041 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 64 places, 131 transitions, 389 flow [2021-03-25 17:53:31,041 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 64 places, 131 transitions, 389 flow [2021-03-25 17:53:31,064 INFO L129 PetriNetUnfolder]: 611/972 cut-off events. [2021-03-25 17:53:31,064 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 17:53:31,065 INFO L84 FinitePrefix]: Finished finitePrefix Result has 996 conditions, 972 events. 611/972 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3996 event pairs, 0 based on Foata normal form. 0/972 useless extension candidates. Maximal degree in co-relation 989. Up to 165 conditions per place. [2021-03-25 17:53:31,068 INFO L142 LiptonReduction]: Number of co-enabled transitions 2520 [2021-03-25 17:53:31,072 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 17:53:31,072 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 17:53:31,073 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 32 [2021-03-25 17:53:31,073 INFO L480 AbstractCegarLoop]: Abstraction has has 64 places, 131 transitions, 389 flow [2021-03-25 17:53:31,073 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 223.66666666666666) internal successors, (671), 3 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:53:31,073 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 17:53:31,073 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] [2021-03-25 17:53:31,073 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-25 17:53:31,074 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_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]=== [2021-03-25 17:53:31,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 17:53:31,074 INFO L82 PathProgramCache]: Analyzing trace with hash -1323234069, now seen corresponding path program 1 times [2021-03-25 17:53:31,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 17:53:31,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274329178] [2021-03-25 17:53:31,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 17:53:31,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 17:53:31,084 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:53:31,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 17:53:31,084 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:53:31,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 17:53:31,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:53:31,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 17:53:31,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 17:53:31,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274329178] [2021-03-25 17:53:31,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 17:53:31,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 17:53:31,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745549623] [2021-03-25 17:53:31,087 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 17:53:31,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 17:53:31,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 17:53:31,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 17:53:31,088 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 237 [2021-03-25 17:53:31,089 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 131 transitions, 389 flow. Second operand has 3 states, 3 states have (on average 223.66666666666666) internal successors, (671), 3 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:53:31,089 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 17:53:31,089 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 237 [2021-03-25 17:53:31,089 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 17:53:31,119 INFO L129 PetriNetUnfolder]: 506/832 cut-off events. [2021-03-25 17:53:31,119 INFO L130 PetriNetUnfolder]: For 87/87 co-relation queries the response was YES. [2021-03-25 17:53:31,121 INFO L84 FinitePrefix]: Finished finitePrefix Result has 925 conditions, 832 events. 506/832 cut-off events. For 87/87 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3634 event pairs, 0 based on Foata normal form. 20/852 useless extension candidates. Maximal degree in co-relation 917. Up to 165 conditions per place. [2021-03-25 17:53:31,122 INFO L132 encePairwiseOnDemand]: 232/237 looper letters, 8 selfloop transitions, 1 changer transitions 0/127 dead transitions. [2021-03-25 17:53:31,122 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 127 transitions, 395 flow [2021-03-25 17:53:31,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 17:53:31,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 17:53:31,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 682 transitions. [2021-03-25 17:53:31,124 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9592123769338959 [2021-03-25 17:53:31,124 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 682 transitions. [2021-03-25 17:53:31,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 682 transitions. [2021-03-25 17:53:31,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 17:53:31,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 682 transitions. [2021-03-25 17:53:31,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 227.33333333333334) internal successors, (682), 3 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:53:31,126 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:53:31,126 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:53:31,126 INFO L185 Difference]: Start difference. First operand has 64 places, 131 transitions, 389 flow. Second operand 3 states and 682 transitions. [2021-03-25 17:53:31,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 127 transitions, 395 flow [2021-03-25 17:53:31,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 127 transitions, 394 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 17:53:31,128 INFO L241 Difference]: Finished difference. Result has 65 places, 127 transitions, 378 flow [2021-03-25 17:53:31,128 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=378, PETRI_PLACES=65, PETRI_TRANSITIONS=127} [2021-03-25 17:53:31,155 INFO L343 CegarLoopForPetriNet]: 80 programPoint places, -15 predicate places. [2021-03-25 17:53:31,156 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 17:53:31,156 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 65 places, 127 transitions, 378 flow [2021-03-25 17:53:31,156 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 65 places, 127 transitions, 378 flow [2021-03-25 17:53:31,156 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 65 places, 127 transitions, 378 flow [2021-03-25 17:53:31,187 INFO L129 PetriNetUnfolder]: 506/832 cut-off events. [2021-03-25 17:53:31,187 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 17:53:31,189 INFO L84 FinitePrefix]: Finished finitePrefix Result has 857 conditions, 832 events. 506/832 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3446 event pairs, 0 based on Foata normal form. 0/832 useless extension candidates. Maximal degree in co-relation 850. Up to 165 conditions per place. [2021-03-25 17:53:31,192 INFO L142 LiptonReduction]: Number of co-enabled transitions 2424 [2021-03-25 17:53:31,196 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 17:53:31,197 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 17:53:31,197 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 41 [2021-03-25 17:53:31,198 INFO L480 AbstractCegarLoop]: Abstraction has has 65 places, 127 transitions, 378 flow [2021-03-25 17:53:31,199 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 223.66666666666666) internal successors, (671), 3 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:53:31,199 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 17:53:31,199 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] [2021-03-25 17:53:31,199 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-25 17:53:31,199 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_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]=== [2021-03-25 17:53:31,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 17:53:31,200 INFO L82 PathProgramCache]: Analyzing trace with hash -1494861249, now seen corresponding path program 1 times [2021-03-25 17:53:31,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 17:53:31,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112868395] [2021-03-25 17:53:31,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 17:53:31,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 17:53:31,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:53:31,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 17:53:31,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:53:31,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 17:53:31,242 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:53:31,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 17:53:31,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 17:53:31,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112868395] [2021-03-25 17:53:31,242 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 17:53:31,242 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 17:53:31,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029536527] [2021-03-25 17:53:31,243 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 17:53:31,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 17:53:31,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 17:53:31,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 17:53:31,243 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 237 [2021-03-25 17:53:31,244 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 127 transitions, 378 flow. Second operand has 3 states, 3 states have (on average 223.66666666666666) internal successors, (671), 3 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:53:31,244 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 17:53:31,244 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 237 [2021-03-25 17:53:31,244 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 17:53:31,257 INFO L129 PetriNetUnfolder]: 55/150 cut-off events. [2021-03-25 17:53:31,257 INFO L130 PetriNetUnfolder]: For 67/67 co-relation queries the response was YES. [2021-03-25 17:53:31,257 INFO L84 FinitePrefix]: Finished finitePrefix Result has 178 conditions, 150 events. 55/150 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 418 event pairs, 0 based on Foata normal form. 66/216 useless extension candidates. Maximal degree in co-relation 170. Up to 20 conditions per place. [2021-03-25 17:53:31,258 INFO L132 encePairwiseOnDemand]: 225/237 looper letters, 1 selfloop transitions, 1 changer transitions 0/105 dead transitions. [2021-03-25 17:53:31,258 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 105 transitions, 316 flow [2021-03-25 17:53:31,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 17:53:31,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 17:53:31,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 682 transitions. [2021-03-25 17:53:31,259 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9592123769338959 [2021-03-25 17:53:31,259 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 682 transitions. [2021-03-25 17:53:31,259 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 682 transitions. [2021-03-25 17:53:31,259 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 17:53:31,259 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 682 transitions. [2021-03-25 17:53:31,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 227.33333333333334) internal successors, (682), 3 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:53:31,261 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:53:31,261 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:53:31,262 INFO L185 Difference]: Start difference. First operand has 65 places, 127 transitions, 378 flow. Second operand 3 states and 682 transitions. [2021-03-25 17:53:31,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 105 transitions, 316 flow [2021-03-25 17:53:31,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 105 transitions, 315 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 17:53:31,263 INFO L241 Difference]: Finished difference. Result has 66 places, 105 transitions, 313 flow [2021-03-25 17:53:31,263 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=311, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=313, PETRI_PLACES=66, PETRI_TRANSITIONS=105} [2021-03-25 17:53:31,263 INFO L343 CegarLoopForPetriNet]: 80 programPoint places, -14 predicate places. [2021-03-25 17:53:31,263 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 17:53:31,263 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 66 places, 105 transitions, 313 flow [2021-03-25 17:53:31,264 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 66 places, 105 transitions, 313 flow [2021-03-25 17:53:31,264 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 66 places, 105 transitions, 313 flow [2021-03-25 17:53:31,268 INFO L129 PetriNetUnfolder]: 55/150 cut-off events. [2021-03-25 17:53:31,268 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 17:53:31,269 INFO L84 FinitePrefix]: Finished finitePrefix Result has 176 conditions, 150 events. 55/150 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 403 event pairs, 0 based on Foata normal form. 0/150 useless extension candidates. Maximal degree in co-relation 169. Up to 20 conditions per place. [2021-03-25 17:53:31,269 INFO L142 LiptonReduction]: Number of co-enabled transitions 1258 [2021-03-25 17:53:31,272 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 17:53:31,272 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 17:53:31,272 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 9 [2021-03-25 17:53:31,272 INFO L480 AbstractCegarLoop]: Abstraction has has 66 places, 105 transitions, 313 flow [2021-03-25 17:53:31,273 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 223.66666666666666) internal successors, (671), 3 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:53:31,273 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 17:53:31,273 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 17:53:31,273 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-25 17:53:31,273 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_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]=== [2021-03-25 17:53:31,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 17:53:31,273 INFO L82 PathProgramCache]: Analyzing trace with hash 1712896609, now seen corresponding path program 1 times [2021-03-25 17:53:31,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 17:53:31,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912993504] [2021-03-25 17:53:31,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 17:53:31,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 17:53:31,292 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:53:31,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 17:53:31,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:53:31,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 17:53:31,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:53:31,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 17:53:31,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 17:53:31,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912993504] [2021-03-25 17:53:31,296 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 17:53:31,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 17:53:31,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025770906] [2021-03-25 17:53:31,297 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 17:53:31,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 17:53:31,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 17:53:31,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 17:53:31,298 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 237 [2021-03-25 17:53:31,298 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 105 transitions, 313 flow. Second operand has 3 states, 3 states have (on average 223.66666666666666) internal successors, (671), 3 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:53:31,298 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 17:53:31,298 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 237 [2021-03-25 17:53:31,298 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 17:53:31,309 INFO L129 PetriNetUnfolder]: 0/40 cut-off events. [2021-03-25 17:53:31,309 INFO L130 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2021-03-25 17:53:31,309 INFO L84 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 40 events. 0/40 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 27 event pairs, 0 based on Foata normal form. 10/50 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-25 17:53:31,309 INFO L132 encePairwiseOnDemand]: 226/237 looper letters, 1 selfloop transitions, 1 changer transitions 0/40 dead transitions. [2021-03-25 17:53:31,309 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 40 transitions, 122 flow [2021-03-25 17:53:31,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 17:53:31,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 17:53:31,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 681 transitions. [2021-03-25 17:53:31,310 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9578059071729957 [2021-03-25 17:53:31,310 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 681 transitions. [2021-03-25 17:53:31,310 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 681 transitions. [2021-03-25 17:53:31,311 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 17:53:31,311 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 681 transitions. [2021-03-25 17:53:31,312 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 227.0) internal successors, (681), 3 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:53:31,312 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:53:31,313 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:53:31,313 INFO L185 Difference]: Start difference. First operand has 66 places, 105 transitions, 313 flow. Second operand 3 states and 681 transitions. [2021-03-25 17:53:31,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 40 transitions, 122 flow [2021-03-25 17:53:31,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 40 transitions, 121 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 17:53:31,313 INFO L241 Difference]: Finished difference. Result has 67 places, 40 transitions, 119 flow [2021-03-25 17:53:31,314 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=119, PETRI_PLACES=67, PETRI_TRANSITIONS=40} [2021-03-25 17:53:31,314 INFO L343 CegarLoopForPetriNet]: 80 programPoint places, -13 predicate places. [2021-03-25 17:53:31,314 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 17:53:31,314 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 67 places, 40 transitions, 119 flow [2021-03-25 17:53:31,314 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 67 places, 40 transitions, 119 flow [2021-03-25 17:53:31,315 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 67 places, 40 transitions, 119 flow [2021-03-25 17:53:31,317 INFO L129 PetriNetUnfolder]: 0/40 cut-off events. [2021-03-25 17:53:31,317 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 17:53:31,317 INFO L84 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 40 events. 0/40 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 27 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2021-03-25 17:53:31,317 INFO L142 LiptonReduction]: Number of co-enabled transitions 468 [2021-03-25 17:53:31,318 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 17:53:31,318 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 17:53:31,318 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 4 [2021-03-25 17:53:31,319 INFO L480 AbstractCegarLoop]: Abstraction has has 67 places, 40 transitions, 119 flow [2021-03-25 17:53:31,319 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 223.66666666666666) internal successors, (671), 3 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:53:31,319 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 17:53:31,319 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] [2021-03-25 17:53:31,320 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-25 17:53:31,320 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_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]=== [2021-03-25 17:53:31,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 17:53:31,320 INFO L82 PathProgramCache]: Analyzing trace with hash -416277105, now seen corresponding path program 1 times [2021-03-25 17:53:31,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 17:53:31,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582974176] [2021-03-25 17:53:31,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 17:53:31,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 17:53:31,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:53:31,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 17:53:31,452 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:53:31,452 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:53:31,474 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-25 17:53:31,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 17:53:31,492 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-25 17:53:31,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-25 17:53:31,510 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-25 17:53:31,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-25 17:53:31,532 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-25 17:53:31,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-25 17:53:31,559 INFO L142 QuantifierPusher]: treesize reduction 36, result has 58.6 percent of original size [2021-03-25 17:53:31,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-03-25 17:53:31,593 INFO L142 QuantifierPusher]: treesize reduction 45, result has 59.1 percent of original size [2021-03-25 17:53:31,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-03-25 17:53:31,636 INFO L142 QuantifierPusher]: treesize reduction 54, result has 57.5 percent of original size [2021-03-25 17:53:31,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-03-25 17:53:31,687 INFO L142 QuantifierPusher]: treesize reduction 54, result has 59.4 percent of original size [2021-03-25 17:53:31,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-03-25 17:53:31,752 INFO L142 QuantifierPusher]: treesize reduction 63, result has 58.0 percent of original size [2021-03-25 17:53:31,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-03-25 17:53:31,840 INFO L142 QuantifierPusher]: treesize reduction 81, result has 52.9 percent of original size [2021-03-25 17:53:31,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 91 [2021-03-25 17:53:31,934 INFO L142 QuantifierPusher]: treesize reduction 99, result has 49.0 percent of original size [2021-03-25 17:53:31,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-03-25 17:53:32,011 INFO L142 QuantifierPusher]: treesize reduction 108, result has 47.3 percent of original size [2021-03-25 17:53:32,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-25 17:53:32,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 17:53:32,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582974176] [2021-03-25 17:53:32,079 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 17:53:32,079 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-03-25 17:53:32,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710151523] [2021-03-25 17:53:32,080 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-03-25 17:53:32,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 17:53:32,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-03-25 17:53:32,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2021-03-25 17:53:32,082 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 237 [2021-03-25 17:53:32,084 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 40 transitions, 119 flow. Second operand has 15 states, 15 states have (on average 209.93333333333334) internal successors, (3149), 15 states have internal predecessors, (3149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:53:32,084 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 17:53:32,084 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 237 [2021-03-25 17:53:32,084 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 17:53:35,141 INFO L129 PetriNetUnfolder]: 61443/74062 cut-off events. [2021-03-25 17:53:35,142 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 17:53:35,552 INFO L84 FinitePrefix]: Finished finitePrefix Result has 147831 conditions, 74062 events. 61443/74062 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4198. Compared 361876 event pairs, 20481 based on Foata normal form. 1/73084 useless extension candidates. Maximal degree in co-relation 147823. Up to 26625 conditions per place. [2021-03-25 17:53:35,784 INFO L132 encePairwiseOnDemand]: 223/237 looper letters, 90 selfloop transitions, 12 changer transitions 1/129 dead transitions. [2021-03-25 17:53:35,785 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 129 transitions, 503 flow [2021-03-25 17:53:35,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-03-25 17:53:35,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-03-25 17:53:35,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3239 transitions. [2021-03-25 17:53:35,790 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9111111111111111 [2021-03-25 17:53:35,790 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3239 transitions. [2021-03-25 17:53:35,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3239 transitions. [2021-03-25 17:53:35,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 17:53:35,791 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3239 transitions. [2021-03-25 17:53:35,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 215.93333333333334) internal successors, (3239), 15 states have internal predecessors, (3239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:53:35,799 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 237.0) internal successors, (3792), 16 states have internal predecessors, (3792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:53:35,800 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 237.0) internal successors, (3792), 16 states have internal predecessors, (3792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:53:35,800 INFO L185 Difference]: Start difference. First operand has 67 places, 40 transitions, 119 flow. Second operand 15 states and 3239 transitions. [2021-03-25 17:53:35,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 129 transitions, 503 flow [2021-03-25 17:53:35,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 129 transitions, 502 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 17:53:35,802 INFO L241 Difference]: Finished difference. Result has 93 places, 51 transitions, 213 flow [2021-03-25 17:53:35,802 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=213, PETRI_PLACES=93, PETRI_TRANSITIONS=51} [2021-03-25 17:53:35,802 INFO L343 CegarLoopForPetriNet]: 80 programPoint places, 13 predicate places. [2021-03-25 17:53:35,802 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 17:53:35,802 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 93 places, 51 transitions, 213 flow [2021-03-25 17:53:35,803 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 93 places, 51 transitions, 213 flow [2021-03-25 17:53:35,803 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 92 places, 51 transitions, 213 flow [2021-03-25 17:53:35,811 INFO L129 PetriNetUnfolder]: 0/174 cut-off events. [2021-03-25 17:53:35,811 INFO L130 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2021-03-25 17:53:35,811 INFO L84 FinitePrefix]: Finished finitePrefix Result has 284 conditions, 174 events. 0/174 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 868 event pairs, 0 based on Foata normal form. 0/154 useless extension candidates. Maximal degree in co-relation 0. Up to 13 conditions per place. [2021-03-25 17:53:35,812 INFO L142 LiptonReduction]: Number of co-enabled transitions 708 [2021-03-25 17:53:35,813 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 17:53:35,813 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 17:53:35,813 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 11 [2021-03-25 17:53:35,814 INFO L480 AbstractCegarLoop]: Abstraction has has 92 places, 51 transitions, 213 flow [2021-03-25 17:53:35,814 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 209.93333333333334) internal successors, (3149), 15 states have internal predecessors, (3149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:53:35,814 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 17:53:35,815 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] [2021-03-25 17:53:35,815 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-03-25 17:53:35,815 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_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]=== [2021-03-25 17:53:35,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 17:53:35,815 INFO L82 PathProgramCache]: Analyzing trace with hash 400787297, now seen corresponding path program 2 times [2021-03-25 17:53:35,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 17:53:35,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704858652] [2021-03-25 17:53:35,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 17:53:35,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 17:53:35,852 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:53:35,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 17:53:35,852 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:53:35,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:53:35,857 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:53:35,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 17:53:35,863 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-25 17:53:35,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 17:53:35,874 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-25 17:53:35,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-25 17:53:35,887 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-25 17:53:35,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-25 17:53:35,907 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-25 17:53:35,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-25 17:53:35,931 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-03-25 17:53:35,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-03-25 17:53:35,969 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-03-25 17:53:35,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-25 17:53:36,008 INFO L142 QuantifierPusher]: treesize reduction 63, result has 52.3 percent of original size [2021-03-25 17:53:36,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-03-25 17:53:36,055 INFO L142 QuantifierPusher]: treesize reduction 72, result has 51.7 percent of original size [2021-03-25 17:53:36,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-03-25 17:53:36,109 INFO L142 QuantifierPusher]: treesize reduction 81, result has 51.2 percent of original size [2021-03-25 17:53:36,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-03-25 17:53:36,173 INFO L142 QuantifierPusher]: treesize reduction 90, result has 50.8 percent of original size [2021-03-25 17:53:36,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 93 [2021-03-25 17:53:36,242 INFO L142 QuantifierPusher]: treesize reduction 108, result has 47.3 percent of original size [2021-03-25 17:53:36,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-25 17:53:36,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 17:53:36,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704858652] [2021-03-25 17:53:36,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 17:53:36,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-03-25 17:53:36,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188519539] [2021-03-25 17:53:36,314 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-03-25 17:53:36,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 17:53:36,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-03-25 17:53:36,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2021-03-25 17:53:36,318 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 237 [2021-03-25 17:53:36,324 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 51 transitions, 213 flow. Second operand has 15 states, 15 states have (on average 209.93333333333334) internal successors, (3149), 15 states have internal predecessors, (3149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:53:36,324 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 17:53:36,324 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 237 [2021-03-25 17:53:36,324 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 17:53:43,559 INFO L129 PetriNetUnfolder]: 82982/114212 cut-off events. [2021-03-25 17:53:43,560 INFO L130 PetriNetUnfolder]: For 122886/123119 co-relation queries the response was YES. [2021-03-25 17:53:44,620 INFO L84 FinitePrefix]: Finished finitePrefix Result has 323330 conditions, 114212 events. 82982/114212 cut-off events. For 122886/123119 co-relation queries the response was YES. Maximal size of possible extension queue 5315. Compared 783535 event pairs, 27651 based on Foata normal form. 1/113231 useless extension candidates. Maximal degree in co-relation 323309. Up to 36883 conditions per place. [2021-03-25 17:53:45,090 INFO L132 encePairwiseOnDemand]: 223/237 looper letters, 150 selfloop transitions, 21 changer transitions 3/200 dead transitions. [2021-03-25 17:53:45,090 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 200 transitions, 1289 flow [2021-03-25 17:53:45,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-03-25 17:53:45,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-03-25 17:53:45,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3239 transitions. [2021-03-25 17:53:45,095 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9111111111111111 [2021-03-25 17:53:45,095 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3239 transitions. [2021-03-25 17:53:45,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3239 transitions. [2021-03-25 17:53:45,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 17:53:45,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3239 transitions. [2021-03-25 17:53:45,100 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 215.93333333333334) internal successors, (3239), 15 states have internal predecessors, (3239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:53:45,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 237.0) internal successors, (3792), 16 states have internal predecessors, (3792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:53:45,103 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 237.0) internal successors, (3792), 16 states have internal predecessors, (3792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:53:45,103 INFO L185 Difference]: Start difference. First operand has 92 places, 51 transitions, 213 flow. Second operand 15 states and 3239 transitions. [2021-03-25 17:53:45,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 200 transitions, 1289 flow [2021-03-25 17:53:45,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 200 transitions, 1252 flow, removed 12 selfloop flow, removed 2 redundant places. [2021-03-25 17:53:45,239 INFO L241 Difference]: Finished difference. Result has 117 places, 71 transitions, 439 flow [2021-03-25 17:53:45,239 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=439, PETRI_PLACES=117, PETRI_TRANSITIONS=71} [2021-03-25 17:53:45,239 INFO L343 CegarLoopForPetriNet]: 80 programPoint places, 37 predicate places. [2021-03-25 17:53:45,239 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 17:53:45,239 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 117 places, 71 transitions, 439 flow [2021-03-25 17:53:45,240 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 117 places, 71 transitions, 439 flow [2021-03-25 17:53:45,240 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 116 places, 71 transitions, 439 flow [2021-03-25 17:53:45,298 INFO L129 PetriNetUnfolder]: 0/706 cut-off events. [2021-03-25 17:53:45,298 INFO L130 PetriNetUnfolder]: For 230/258 co-relation queries the response was YES. [2021-03-25 17:53:45,298 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1070 conditions, 706 events. 0/706 cut-off events. For 230/258 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 7239 event pairs, 0 based on Foata normal form. 0/621 useless extension candidates. Maximal degree in co-relation 0. Up to 76 conditions per place. [2021-03-25 17:53:45,303 INFO L142 LiptonReduction]: Number of co-enabled transitions 1086 [2021-03-25 17:53:45,305 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 17:53:45,305 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 17:53:45,305 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 66 [2021-03-25 17:53:45,305 INFO L480 AbstractCegarLoop]: Abstraction has has 116 places, 71 transitions, 439 flow [2021-03-25 17:53:45,306 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 209.93333333333334) internal successors, (3149), 15 states have internal predecessors, (3149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:53:45,306 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 17:53:45,306 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 17:53:45,306 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-03-25 17:53:45,306 INFO L428 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_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]=== [2021-03-25 17:53:45,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 17:53:45,307 INFO L82 PathProgramCache]: Analyzing trace with hash -1051676889, now seen corresponding path program 3 times [2021-03-25 17:53:45,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 17:53:45,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586054343] [2021-03-25 17:53:45,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 17:53:45,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 17:53:45,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:53:45,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 17:53:45,347 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:53:45,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:53:45,351 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:53:45,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 17:53:45,358 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-25 17:53:45,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 17:53:45,368 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-25 17:53:45,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-25 17:53:45,383 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-25 17:53:45,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-25 17:53:45,403 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-25 17:53:45,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-25 17:53:45,427 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-03-25 17:53:45,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-03-25 17:53:45,457 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-03-25 17:53:45,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-25 17:53:45,510 INFO L142 QuantifierPusher]: treesize reduction 63, result has 52.3 percent of original size [2021-03-25 17:53:45,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-03-25 17:53:45,565 INFO L142 QuantifierPusher]: treesize reduction 72, result has 51.7 percent of original size [2021-03-25 17:53:45,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-03-25 17:53:45,624 INFO L142 QuantifierPusher]: treesize reduction 90, result has 49.2 percent of original size [2021-03-25 17:53:45,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-03-25 17:53:45,689 INFO L142 QuantifierPusher]: treesize reduction 99, result has 49.0 percent of original size [2021-03-25 17:53:45,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-03-25 17:53:45,770 INFO L142 QuantifierPusher]: treesize reduction 108, result has 47.3 percent of original size [2021-03-25 17:53:45,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-25 17:53:45,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 17:53:45,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586054343] [2021-03-25 17:53:45,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 17:53:45,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-03-25 17:53:45,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109651519] [2021-03-25 17:53:45,842 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-03-25 17:53:45,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 17:53:45,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-03-25 17:53:45,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2021-03-25 17:53:45,845 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 237 [2021-03-25 17:53:45,846 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 71 transitions, 439 flow. Second operand has 15 states, 15 states have (on average 209.93333333333334) internal successors, (3149), 15 states have internal predecessors, (3149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:53:45,846 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 17:53:45,846 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 237 [2021-03-25 17:53:45,846 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 17:54:05,682 INFO L129 PetriNetUnfolder]: 124016/180624 cut-off events. [2021-03-25 17:54:05,683 INFO L130 PetriNetUnfolder]: For 512035/516426 co-relation queries the response was YES. [2021-03-25 17:54:07,706 INFO L84 FinitePrefix]: Finished finitePrefix Result has 662284 conditions, 180624 events. 124016/180624 cut-off events. For 512035/516426 co-relation queries the response was YES. Maximal size of possible extension queue 10377. Compared 1499116 event pairs, 29693 based on Foata normal form. 1/179633 useless extension candidates. Maximal degree in co-relation 662251. Up to 63529 conditions per place. [2021-03-25 17:54:08,398 INFO L132 encePairwiseOnDemand]: 223/237 looper letters, 152 selfloop transitions, 42 changer transitions 1/221 dead transitions. [2021-03-25 17:54:08,398 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 221 transitions, 1853 flow [2021-03-25 17:54:08,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-03-25 17:54:08,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-03-25 17:54:08,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3239 transitions. [2021-03-25 17:54:08,403 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9111111111111111 [2021-03-25 17:54:08,403 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3239 transitions. [2021-03-25 17:54:08,403 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3239 transitions. [2021-03-25 17:54:08,404 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 17:54:08,404 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3239 transitions. [2021-03-25 17:54:08,407 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 215.93333333333334) internal successors, (3239), 15 states have internal predecessors, (3239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:54:08,410 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 237.0) internal successors, (3792), 16 states have internal predecessors, (3792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:54:08,411 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 237.0) internal successors, (3792), 16 states have internal predecessors, (3792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:54:08,411 INFO L185 Difference]: Start difference. First operand has 116 places, 71 transitions, 439 flow. Second operand 15 states and 3239 transitions. [2021-03-25 17:54:08,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 221 transitions, 1853 flow [2021-03-25 17:54:14,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 221 transitions, 1785 flow, removed 27 selfloop flow, removed 3 redundant places. [2021-03-25 17:54:14,442 INFO L241 Difference]: Finished difference. Result has 140 places, 104 transitions, 916 flow [2021-03-25 17:54:14,443 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=431, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=916, PETRI_PLACES=140, PETRI_TRANSITIONS=104} [2021-03-25 17:54:14,443 INFO L343 CegarLoopForPetriNet]: 80 programPoint places, 60 predicate places. [2021-03-25 17:54:14,443 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 17:54:14,443 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 140 places, 104 transitions, 916 flow [2021-03-25 17:54:14,443 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 140 places, 104 transitions, 916 flow [2021-03-25 17:54:14,444 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 139 places, 104 transitions, 916 flow [2021-03-25 17:54:14,677 INFO L129 PetriNetUnfolder]: 0/1992 cut-off events. [2021-03-25 17:54:14,677 INFO L130 PetriNetUnfolder]: For 1636/1815 co-relation queries the response was YES. [2021-03-25 17:54:14,677 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3369 conditions, 1992 events. 0/1992 cut-off events. For 1636/1815 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 26360 event pairs, 0 based on Foata normal form. 3/1741 useless extension candidates. Maximal degree in co-relation 0. Up to 195 conditions per place. [2021-03-25 17:54:14,695 INFO L142 LiptonReduction]: Number of co-enabled transitions 1788 [2021-03-25 17:54:14,699 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 17:54:14,699 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 17:54:14,699 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 256 [2021-03-25 17:54:14,699 INFO L480 AbstractCegarLoop]: Abstraction has has 139 places, 104 transitions, 916 flow [2021-03-25 17:54:14,700 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 209.93333333333334) internal successors, (3149), 15 states have internal predecessors, (3149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:54:14,700 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 17:54:14,700 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] [2021-03-25 17:54:14,700 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-03-25 17:54:14,700 INFO L428 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_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]=== [2021-03-25 17:54:14,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 17:54:14,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1855409807, now seen corresponding path program 4 times [2021-03-25 17:54:14,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 17:54:14,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194170882] [2021-03-25 17:54:14,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 17:54:14,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 17:54:14,738 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:54:14,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 17:54:14,739 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:54:14,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:54:14,742 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:54:14,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 17:54:14,748 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-25 17:54:14,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 17:54:14,757 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-25 17:54:14,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-25 17:54:14,769 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-25 17:54:14,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-25 17:54:14,785 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-25 17:54:14,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-25 17:54:14,805 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-03-25 17:54:14,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-03-25 17:54:14,845 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-03-25 17:54:14,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-25 17:54:14,878 INFO L142 QuantifierPusher]: treesize reduction 63, result has 52.3 percent of original size [2021-03-25 17:54:14,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-03-25 17:54:14,920 INFO L142 QuantifierPusher]: treesize reduction 81, result has 49.4 percent of original size [2021-03-25 17:54:14,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-03-25 17:54:14,970 INFO L142 QuantifierPusher]: treesize reduction 90, result has 49.2 percent of original size [2021-03-25 17:54:14,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-03-25 17:54:15,027 INFO L142 QuantifierPusher]: treesize reduction 99, result has 49.0 percent of original size [2021-03-25 17:54:15,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-03-25 17:54:15,092 INFO L142 QuantifierPusher]: treesize reduction 108, result has 47.3 percent of original size [2021-03-25 17:54:15,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-25 17:54:15,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 17:54:15,147 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194170882] [2021-03-25 17:54:15,147 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 17:54:15,147 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-03-25 17:54:15,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195401680] [2021-03-25 17:54:15,147 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-03-25 17:54:15,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 17:54:15,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-03-25 17:54:15,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2021-03-25 17:54:15,149 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 237 [2021-03-25 17:54:15,151 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 104 transitions, 916 flow. Second operand has 15 states, 15 states have (on average 209.93333333333334) internal successors, (3149), 15 states have internal predecessors, (3149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:54:15,151 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 17:54:15,151 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 237 [2021-03-25 17:54:15,151 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 17:54:43,681 INFO L129 PetriNetUnfolder]: 169409/248969 cut-off events. [2021-03-25 17:54:43,681 INFO L130 PetriNetUnfolder]: For 1345372/1354226 co-relation queries the response was YES. [2021-03-25 17:54:46,585 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1126667 conditions, 248969 events. 169409/248969 cut-off events. For 1345372/1354226 co-relation queries the response was YES. Maximal size of possible extension queue 15179. Compared 2208981 event pairs, 48412 based on Foata normal form. 1/247782 useless extension candidates. Maximal degree in co-relation 1126623. Up to 85386 conditions per place. [2021-03-25 17:54:47,775 INFO L132 encePairwiseOnDemand]: 223/237 looper letters, 196 selfloop transitions, 63 changer transitions 1/286 dead transitions. [2021-03-25 17:54:47,775 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 286 transitions, 3088 flow [2021-03-25 17:54:47,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-03-25 17:54:47,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-03-25 17:54:47,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3239 transitions. [2021-03-25 17:54:47,779 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9111111111111111 [2021-03-25 17:54:47,779 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3239 transitions. [2021-03-25 17:54:47,779 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3239 transitions. [2021-03-25 17:54:47,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 17:54:47,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3239 transitions. [2021-03-25 17:54:47,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 215.93333333333334) internal successors, (3239), 15 states have internal predecessors, (3239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:54:47,786 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 237.0) internal successors, (3792), 16 states have internal predecessors, (3792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:54:47,787 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 237.0) internal successors, (3792), 16 states have internal predecessors, (3792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:54:47,787 INFO L185 Difference]: Start difference. First operand has 139 places, 104 transitions, 916 flow. Second operand 15 states and 3239 transitions. [2021-03-25 17:54:47,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 286 transitions, 3088 flow [2021-03-25 17:55:09,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 286 transitions, 3009 flow, removed 28 selfloop flow, removed 2 redundant places. [2021-03-25 17:55:09,020 INFO L241 Difference]: Finished difference. Result has 164 places, 153 transitions, 1747 flow [2021-03-25 17:55:09,021 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=901, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1747, PETRI_PLACES=164, PETRI_TRANSITIONS=153} [2021-03-25 17:55:09,021 INFO L343 CegarLoopForPetriNet]: 80 programPoint places, 84 predicate places. [2021-03-25 17:55:09,021 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 17:55:09,021 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 164 places, 153 transitions, 1747 flow [2021-03-25 17:55:09,021 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 164 places, 153 transitions, 1747 flow [2021-03-25 17:55:09,022 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 163 places, 153 transitions, 1747 flow [2021-03-25 17:55:09,430 INFO L129 PetriNetUnfolder]: 0/3469 cut-off events. [2021-03-25 17:55:09,430 INFO L130 PetriNetUnfolder]: For 4851/5296 co-relation queries the response was YES. [2021-03-25 17:55:09,431 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6497 conditions, 3469 events. 0/3469 cut-off events. For 4851/5296 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 51252 event pairs, 0 based on Foata normal form. 13/3030 useless extension candidates. Maximal degree in co-relation 0. Up to 330 conditions per place. [2021-03-25 17:55:09,463 INFO L142 LiptonReduction]: Number of co-enabled transitions 2812 [2021-03-25 17:55:09,469 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 17:55:09,469 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 17:55:09,469 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 448 [2021-03-25 17:55:09,469 INFO L480 AbstractCegarLoop]: Abstraction has has 163 places, 153 transitions, 1747 flow [2021-03-25 17:55:09,470 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 209.93333333333334) internal successors, (3149), 15 states have internal predecessors, (3149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:55:09,470 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 17:55:09,470 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] [2021-03-25 17:55:09,470 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-03-25 17:55:09,470 INFO L428 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_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]=== [2021-03-25 17:55:09,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 17:55:09,470 INFO L82 PathProgramCache]: Analyzing trace with hash -1005917905, now seen corresponding path program 5 times [2021-03-25 17:55:09,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 17:55:09,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483087172] [2021-03-25 17:55:09,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 17:55:09,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 17:55:09,499 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:55:09,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 17:55:09,500 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:55:09,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:55:09,505 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:55:09,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 17:55:09,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:55:09,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 17:55:09,521 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-25 17:55:09,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-25 17:55:09,534 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-25 17:55:09,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-25 17:55:09,551 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-25 17:55:09,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-25 17:55:09,574 INFO L142 QuantifierPusher]: treesize reduction 36, result has 58.6 percent of original size [2021-03-25 17:55:09,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-03-25 17:55:09,608 INFO L142 QuantifierPusher]: treesize reduction 45, result has 56.7 percent of original size [2021-03-25 17:55:09,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-03-25 17:55:09,644 INFO L142 QuantifierPusher]: treesize reduction 54, result has 55.4 percent of original size [2021-03-25 17:55:09,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-03-25 17:55:09,688 INFO L142 QuantifierPusher]: treesize reduction 72, result has 51.7 percent of original size [2021-03-25 17:55:09,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-03-25 17:55:09,748 INFO L142 QuantifierPusher]: treesize reduction 72, result has 53.5 percent of original size [2021-03-25 17:55:09,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 83 [2021-03-25 17:55:09,800 INFO L142 QuantifierPusher]: treesize reduction 90, result has 50.8 percent of original size [2021-03-25 17:55:09,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 93 [2021-03-25 17:55:09,861 INFO L142 QuantifierPusher]: treesize reduction 108, result has 47.3 percent of original size [2021-03-25 17:55:09,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-25 17:55:09,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 17:55:09,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483087172] [2021-03-25 17:55:09,915 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 17:55:09,915 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-03-25 17:55:09,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518590492] [2021-03-25 17:55:09,915 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-03-25 17:55:09,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 17:55:09,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-03-25 17:55:09,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2021-03-25 17:55:09,917 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 237 [2021-03-25 17:55:09,919 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 153 transitions, 1747 flow. Second operand has 15 states, 15 states have (on average 209.93333333333334) internal successors, (3149), 15 states have internal predecessors, (3149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:55:09,919 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 17:55:09,919 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 237 [2021-03-25 17:55:09,919 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand