/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/mcr/example_14.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 22:42:14,090 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 22:42:14,092 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 22:42:14,126 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 22:42:14,126 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 22:42:14,128 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 22:42:14,130 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 22:42:14,134 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 22:42:14,136 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 22:42:14,139 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 22:42:14,140 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 22:42:14,140 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 22:42:14,141 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 22:42:14,142 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 22:42:14,143 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 22:42:14,144 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 22:42:14,145 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 22:42:14,146 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 22:42:14,148 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 22:42:14,153 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 22:42:14,154 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 22:42:14,155 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 22:42:14,156 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 22:42:14,157 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 22:42:14,162 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-11 22:42:14,167 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 22:42:14,168 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 22:42:14,168 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 22:42:14,171 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2021-03-11 22:42:14,199 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 22:42:14,199 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 22:42:14,202 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 22:42:14,202 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 22:42:14,202 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 22:42:14,202 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 22:42:14,203 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 22:42:14,203 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 22:42:14,203 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 22:42:14,203 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 22:42:14,204 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 22:42:14,204 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 22:42:14,204 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 22:42:14,204 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 22:42:14,204 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 22:42:14,204 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 22:42:14,204 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 22:42:14,204 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 22:42:14,204 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 22:42:14,204 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 22:42:14,205 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 22:42:14,205 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 22:42:14,205 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 22:42:14,205 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 22:42:14,205 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 22:42:14,205 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 22:42:14,205 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 22:42:14,205 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-11 22:42:14,205 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 22:42:14,448 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 22:42:14,462 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 22:42:14,464 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 22:42:14,465 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-11 22:42:14,465 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-11 22:42:14,466 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_14.bpl [2021-03-11 22:42:14,466 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_14.bpl' [2021-03-11 22:42:14,485 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 22:42:14,489 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-11 22:42:14,490 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 22:42:14,490 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 22:42:14,490 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 22:42:14,498 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 10:42:14" (1/1) ... [2021-03-11 22:42:14,503 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 10:42:14" (1/1) ... [2021-03-11 22:42:14,507 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 22:42:14,508 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 22:42:14,508 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 22:42:14,508 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 22:42:14,513 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 10:42:14" (1/1) ... [2021-03-11 22:42:14,513 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 10:42:14" (1/1) ... [2021-03-11 22:42:14,514 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 10:42:14" (1/1) ... [2021-03-11 22:42:14,514 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 10:42:14" (1/1) ... [2021-03-11 22:42:14,516 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 10:42:14" (1/1) ... [2021-03-11 22:42:14,518 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 10:42:14" (1/1) ... [2021-03-11 22:42:14,519 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 10:42:14" (1/1) ... [2021-03-11 22:42:14,522 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 22:42:14,523 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 22:42:14,523 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 22:42:14,523 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 22:42:14,524 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 10:42:14" (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 [2021-03-11 22:42:14,576 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2021-03-11 22:42:14,576 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2021-03-11 22:42:14,576 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2021-03-11 22:42:14,576 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2021-03-11 22:42:14,577 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2021-03-11 22:42:14,577 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2021-03-11 22:42:14,577 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2021-03-11 22:42:14,577 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2021-03-11 22:42:14,577 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2021-03-11 22:42:14,577 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2021-03-11 22:42:14,577 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2021-03-11 22:42:14,577 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2021-03-11 22:42:14,577 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2021-03-11 22:42:14,577 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2021-03-11 22:42:14,577 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2021-03-11 22:42:14,577 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_9 given in one single declaration [2021-03-11 22:42:14,577 INFO L130 BoogieDeclarations]: Found specification of procedure set_9 [2021-03-11 22:42:14,578 INFO L138 BoogieDeclarations]: Found implementation of procedure set_9 [2021-03-11 22:42:14,578 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-11 22:42:14,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 22:42:14,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 22:42:14,578 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_12 given in one single declaration [2021-03-11 22:42:14,578 INFO L130 BoogieDeclarations]: Found specification of procedure set_12 [2021-03-11 22:42:14,578 INFO L138 BoogieDeclarations]: Found implementation of procedure set_12 [2021-03-11 22:42:14,578 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_5 given in one single declaration [2021-03-11 22:42:14,578 INFO L130 BoogieDeclarations]: Found specification of procedure set_5 [2021-03-11 22:42:14,578 INFO L138 BoogieDeclarations]: Found implementation of procedure set_5 [2021-03-11 22:42:14,578 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_13 given in one single declaration [2021-03-11 22:42:14,578 INFO L130 BoogieDeclarations]: Found specification of procedure set_13 [2021-03-11 22:42:14,579 INFO L138 BoogieDeclarations]: Found implementation of procedure set_13 [2021-03-11 22:42:14,579 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_6 given in one single declaration [2021-03-11 22:42:14,579 INFO L130 BoogieDeclarations]: Found specification of procedure set_6 [2021-03-11 22:42:14,579 INFO L138 BoogieDeclarations]: Found implementation of procedure set_6 [2021-03-11 22:42:14,579 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_10 given in one single declaration [2021-03-11 22:42:14,579 INFO L130 BoogieDeclarations]: Found specification of procedure set_10 [2021-03-11 22:42:14,579 INFO L138 BoogieDeclarations]: Found implementation of procedure set_10 [2021-03-11 22:42:14,579 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_7 given in one single declaration [2021-03-11 22:42:14,579 INFO L130 BoogieDeclarations]: Found specification of procedure set_7 [2021-03-11 22:42:14,579 INFO L138 BoogieDeclarations]: Found implementation of procedure set_7 [2021-03-11 22:42:14,579 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_11 given in one single declaration [2021-03-11 22:42:14,579 INFO L130 BoogieDeclarations]: Found specification of procedure set_11 [2021-03-11 22:42:14,579 INFO L138 BoogieDeclarations]: Found implementation of procedure set_11 [2021-03-11 22:42:14,580 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_8 given in one single declaration [2021-03-11 22:42:14,580 INFO L130 BoogieDeclarations]: Found specification of procedure set_8 [2021-03-11 22:42:14,580 INFO L138 BoogieDeclarations]: Found implementation of procedure set_8 [2021-03-11 22:42:14,580 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 22:42:14,743 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 22:42:14,743 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-11 22:42:14,744 INFO L202 PluginConnector]: Adding new model example_14.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 10:42:14 BoogieIcfgContainer [2021-03-11 22:42:14,744 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 22:42:14,745 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 22:42:14,745 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 22:42:14,747 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 22:42:14,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 10:42:14" (1/2) ... [2021-03-11 22:42:14,748 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@149b5428 and model type example_14.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 10:42:14, skipping insertion in model container [2021-03-11 22:42:14,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_14.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 10:42:14" (2/2) ... [2021-03-11 22:42:14,749 INFO L111 eAbstractionObserver]: Analyzing ICFG example_14.bpl [2021-03-11 22:42:14,752 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 22:42:14,754 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 22:42:14,755 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 22:42:15,043 INFO L149 ThreadInstanceAdder]: Constructed 196 joinOtherThreadTransitions. [2021-03-11 22:42:15,055 INFO L253 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2021-03-11 22:42:15,082 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 22:42:15,083 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-11 22:42:15,083 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 22:42:15,083 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 22:42:15,083 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 22:42:15,083 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 22:42:15,083 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 22:42:15,083 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 22:42:15,096 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 116 places, 255 transitions, 1168 flow [2021-03-11 22:42:21,721 INFO L129 PetriNetUnfolder]: 98305/114733 cut-off events. [2021-03-11 22:42:21,722 INFO L130 PetriNetUnfolder]: For 114688/114688 co-relation queries the response was YES. [2021-03-11 22:42:22,709 INFO L84 FinitePrefix]: Finished finitePrefix Result has 229464 conditions, 114733 events. 98305/114733 cut-off events. For 114688/114688 co-relation queries the response was YES. Maximal size of possible extension queue 3628. Compared 465637 event pairs, 0 based on Foata normal form. 0/114732 useless extension candidates. Maximal degree in co-relation 106563. Up to 24024 conditions per place. [2021-03-11 22:42:22,709 INFO L82 GeneralOperation]: Start removeDead. Operand has 116 places, 255 transitions, 1168 flow [2021-03-11 22:42:23,361 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 100 places, 239 transitions, 1108 flow [2021-03-11 22:42:23,364 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-11 22:42:23,370 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 100 places, 239 transitions, 1108 flow [2021-03-11 22:42:23,372 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 100 places, 239 transitions, 1108 flow [2021-03-11 22:42:23,372 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 100 places, 239 transitions, 1108 flow [2021-03-11 22:42:29,450 INFO L129 PetriNetUnfolder]: 98305/114731 cut-off events. [2021-03-11 22:42:29,450 INFO L130 PetriNetUnfolder]: For 114688/114688 co-relation queries the response was YES. [2021-03-11 22:42:30,220 INFO L84 FinitePrefix]: Finished finitePrefix Result has 229462 conditions, 114731 events. 98305/114731 cut-off events. For 114688/114688 co-relation queries the response was YES. Maximal size of possible extension queue 3628. Compared 480869 event pairs, 0 based on Foata normal form. 0/114731 useless extension candidates. Maximal degree in co-relation 106563. Up to 24024 conditions per place. [2021-03-11 22:42:32,256 INFO L116 LiptonReduction]: Number of co-enabled transitions 10556 [2021-03-11 22:42:32,441 INFO L131 LiptonReduction]: Checked pairs total: 65205 [2021-03-11 22:42:32,441 INFO L133 LiptonReduction]: Total number of compositions: 14 [2021-03-11 22:42:32,444 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 9083 [2021-03-11 22:42:37,862 INFO L129 PetriNetUnfolder]: 98305/114716 cut-off events. [2021-03-11 22:42:37,862 INFO L130 PetriNetUnfolder]: For 114688/114688 co-relation queries the response was YES. [2021-03-11 22:42:37,863 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:42:37,864 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:42:37,864 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-11 22:42:37,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:42:37,868 INFO L82 PathProgramCache]: Analyzing trace with hash 1089243361, now seen corresponding path program 1 times [2021-03-11 22:42:37,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:42:37,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512944516] [2021-03-11 22:42:37,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:42:37,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:42:37,953 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:42:37,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:42:37,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:42:37,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 22:42:37,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:42:37,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:42:37,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:42:37,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512944516] [2021-03-11 22:42:37,973 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:42:37,973 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 22:42:37,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544095156] [2021-03-11 22:42:37,979 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 22:42:37,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:42:37,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 22:42:37,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 22:42:37,989 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 269 [2021-03-11 22:42:37,991 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 225 transitions, 1080 flow. Second operand has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:42:37,992 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:42:37,992 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 269 [2021-03-11 22:42:37,992 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:42:44,568 INFO L129 PetriNetUnfolder]: 94418/110452 cut-off events. [2021-03-11 22:42:44,569 INFO L130 PetriNetUnfolder]: For 127186/127186 co-relation queries the response was YES. [2021-03-11 22:42:45,182 INFO L84 FinitePrefix]: Finished finitePrefix Result has 228734 conditions, 110452 events. 94418/110452 cut-off events. For 127186/127186 co-relation queries the response was YES. Maximal size of possible extension queue 3628. Compared 540288 event pairs, 0 based on Foata normal form. 378/110830 useless extension candidates. Maximal degree in co-relation 108761. Up to 24024 conditions per place. [2021-03-11 22:42:45,643 INFO L132 encePairwiseOnDemand]: 264/269 looper letters, 10 selfloop transitions, 1 changer transitions 0/221 dead transitions. [2021-03-11 22:42:45,643 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 221 transitions, 1082 flow [2021-03-11 22:42:45,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 22:42:45,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 22:42:45,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 777 transitions. [2021-03-11 22:42:45,655 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9628252788104089 [2021-03-11 22:42:45,656 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 777 transitions. [2021-03-11 22:42:45,656 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 777 transitions. [2021-03-11 22:42:45,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:42:45,659 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 777 transitions. [2021-03-11 22:42:45,662 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 259.0) internal successors, (777), 3 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:42:45,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:42:45,666 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:42:45,667 INFO L185 Difference]: Start difference. First operand has 86 places, 225 transitions, 1080 flow. Second operand 3 states and 777 transitions. [2021-03-11 22:42:45,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 221 transitions, 1082 flow [2021-03-11 22:42:46,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 221 transitions, 670 flow, removed 0 selfloop flow, removed 28 redundant places. [2021-03-11 22:42:46,702 INFO L241 Difference]: Finished difference. Result has 60 places, 221 transitions, 650 flow [2021-03-11 22:42:46,703 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=648, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=650, PETRI_PLACES=60, PETRI_TRANSITIONS=221} [2021-03-11 22:42:46,703 INFO L335 CegarLoopForPetriNet]: 86 programPoint places, -26 predicate places. [2021-03-11 22:42:46,704 INFO L480 AbstractCegarLoop]: Abstraction has has 60 places, 221 transitions, 650 flow [2021-03-11 22:42:46,704 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:42:46,704 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:42:46,704 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:42:46,704 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 22:42:46,704 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-11 22:42:46,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:42:46,705 INFO L82 PathProgramCache]: Analyzing trace with hash 1560919833, now seen corresponding path program 1 times [2021-03-11 22:42:46,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:42:46,705 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898050417] [2021-03-11 22:42:46,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:42:46,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:42:46,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:42:46,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:42:46,724 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:42:46,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 22:42:46,727 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:42:46,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:42:46,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:42:46,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898050417] [2021-03-11 22:42:46,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:42:46,729 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 22:42:46,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431688872] [2021-03-11 22:42:46,729 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 22:42:46,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:42:46,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 22:42:46,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 22:42:46,731 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 269 [2021-03-11 22:42:46,731 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 221 transitions, 650 flow. Second operand has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:42:46,732 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:42:46,732 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 269 [2021-03-11 22:42:46,732 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:42:48,233 INFO L129 PetriNetUnfolder]: 43300/51599 cut-off events. [2021-03-11 22:42:48,234 INFO L130 PetriNetUnfolder]: For 7893/7893 co-relation queries the response was YES. [2021-03-11 22:42:48,395 INFO L84 FinitePrefix]: Finished finitePrefix Result has 51996 conditions, 51599 events. 43300/51599 cut-off events. For 7893/7893 co-relation queries the response was YES. Maximal size of possible extension queue 1912. Compared 251982 event pairs, 0 based on Foata normal form. 7515/59114 useless extension candidates. Maximal degree in co-relation 51982. Up to 12012 conditions per place. [2021-03-11 22:42:48,711 INFO L132 encePairwiseOnDemand]: 258/269 looper letters, 4 selfloop transitions, 1 changer transitions 0/211 dead transitions. [2021-03-11 22:42:48,711 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 211 transitions, 630 flow [2021-03-11 22:42:48,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 22:42:48,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 22:42:48,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 777 transitions. [2021-03-11 22:42:48,713 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9628252788104089 [2021-03-11 22:42:48,713 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 777 transitions. [2021-03-11 22:42:48,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 777 transitions. [2021-03-11 22:42:48,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:42:48,714 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 777 transitions. [2021-03-11 22:42:48,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 259.0) internal successors, (777), 3 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:42:48,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:42:48,717 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:42:48,717 INFO L185 Difference]: Start difference. First operand has 60 places, 221 transitions, 650 flow. Second operand 3 states and 777 transitions. [2021-03-11 22:42:48,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 211 transitions, 630 flow [2021-03-11 22:42:48,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 211 transitions, 629 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 22:42:48,725 INFO L241 Difference]: Finished difference. Result has 61 places, 211 transitions, 621 flow [2021-03-11 22:42:48,725 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=619, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=621, PETRI_PLACES=61, PETRI_TRANSITIONS=211} [2021-03-11 22:42:48,726 INFO L335 CegarLoopForPetriNet]: 86 programPoint places, -25 predicate places. [2021-03-11 22:42:48,726 INFO L480 AbstractCegarLoop]: Abstraction has has 61 places, 211 transitions, 621 flow [2021-03-11 22:42:48,726 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:42:48,726 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:42:48,726 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:42:48,726 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 22:42:48,726 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-11 22:42:48,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:42:48,727 INFO L82 PathProgramCache]: Analyzing trace with hash -680332543, now seen corresponding path program 1 times [2021-03-11 22:42:48,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:42:48,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413161737] [2021-03-11 22:42:48,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:42:48,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:42:48,744 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:42:48,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:42:48,744 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:42:48,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 22:42:48,747 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:42:48,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:42:48,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:42:48,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413161737] [2021-03-11 22:42:48,748 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:42:48,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 22:42:48,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324402239] [2021-03-11 22:42:48,748 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 22:42:48,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:42:48,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 22:42:48,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 22:42:48,749 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 269 [2021-03-11 22:42:48,750 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 211 transitions, 621 flow. Second operand has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:42:48,750 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:42:48,750 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 269 [2021-03-11 22:42:48,750 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:42:50,176 INFO L129 PetriNetUnfolder]: 37404/44976 cut-off events. [2021-03-11 22:42:50,177 INFO L130 PetriNetUnfolder]: For 3943/3943 co-relation queries the response was YES. [2021-03-11 22:42:50,304 INFO L84 FinitePrefix]: Finished finitePrefix Result has 48377 conditions, 44976 events. 37404/44976 cut-off events. For 3943/3943 co-relation queries the response was YES. Maximal size of possible extension queue 1912. Compared 220956 event pairs, 0 based on Foata normal form. 562/45538 useless extension candidates. Maximal degree in co-relation 48363. Up to 12012 conditions per place. [2021-03-11 22:42:50,431 INFO L132 encePairwiseOnDemand]: 263/269 looper letters, 9 selfloop transitions, 1 changer transitions 0/206 dead transitions. [2021-03-11 22:42:50,431 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 206 transitions, 626 flow [2021-03-11 22:42:50,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 22:42:50,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 22:42:50,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 777 transitions. [2021-03-11 22:42:50,433 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9628252788104089 [2021-03-11 22:42:50,433 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 777 transitions. [2021-03-11 22:42:50,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 777 transitions. [2021-03-11 22:42:50,433 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:42:50,433 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 777 transitions. [2021-03-11 22:42:50,435 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 259.0) internal successors, (777), 3 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:42:50,436 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:42:50,436 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:42:50,436 INFO L185 Difference]: Start difference. First operand has 61 places, 211 transitions, 621 flow. Second operand 3 states and 777 transitions. [2021-03-11 22:42:50,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 206 transitions, 626 flow [2021-03-11 22:42:50,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 206 transitions, 625 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 22:42:50,442 INFO L241 Difference]: Finished difference. Result has 62 places, 206 transitions, 607 flow [2021-03-11 22:42:50,442 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=605, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=607, PETRI_PLACES=62, PETRI_TRANSITIONS=206} [2021-03-11 22:42:50,442 INFO L335 CegarLoopForPetriNet]: 86 programPoint places, -24 predicate places. [2021-03-11 22:42:50,442 INFO L480 AbstractCegarLoop]: Abstraction has has 62 places, 206 transitions, 607 flow [2021-03-11 22:42:50,443 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:42:50,443 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:42:50,443 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:42:50,443 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 22:42:50,443 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-11 22:42:50,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:42:50,444 INFO L82 PathProgramCache]: Analyzing trace with hash 637998275, now seen corresponding path program 1 times [2021-03-11 22:42:50,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:42:50,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160115910] [2021-03-11 22:42:50,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:42:50,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:42:50,460 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:42:50,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:42:50,461 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:42:50,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 22:42:50,463 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:42:50,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:42:50,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:42:50,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160115910] [2021-03-11 22:42:50,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:42:50,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 22:42:50,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893245220] [2021-03-11 22:42:50,464 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 22:42:50,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:42:50,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 22:42:50,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 22:42:50,466 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 269 [2021-03-11 22:42:50,466 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 206 transitions, 607 flow. Second operand has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:42:50,466 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:42:50,466 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 269 [2021-03-11 22:42:50,466 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:42:51,979 INFO L129 PetriNetUnfolder]: 36944/44460 cut-off events. [2021-03-11 22:42:51,979 INFO L130 PetriNetUnfolder]: For 3437/3437 co-relation queries the response was YES. [2021-03-11 22:42:52,088 INFO L84 FinitePrefix]: Finished finitePrefix Result has 47862 conditions, 44460 events. 36944/44460 cut-off events. For 3437/3437 co-relation queries the response was YES. Maximal size of possible extension queue 1912. Compared 221464 event pairs, 0 based on Foata normal form. 56/44516 useless extension candidates. Maximal degree in co-relation 47847. Up to 12012 conditions per place. [2021-03-11 22:42:52,206 INFO L132 encePairwiseOnDemand]: 265/269 looper letters, 11 selfloop transitions, 1 changer transitions 0/203 dead transitions. [2021-03-11 22:42:52,206 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 203 transitions, 622 flow [2021-03-11 22:42:52,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 22:42:52,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 22:42:52,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 777 transitions. [2021-03-11 22:42:52,208 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9628252788104089 [2021-03-11 22:42:52,208 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 777 transitions. [2021-03-11 22:42:52,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 777 transitions. [2021-03-11 22:42:52,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:42:52,209 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 777 transitions. [2021-03-11 22:42:52,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 259.0) internal successors, (777), 3 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:42:52,211 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:42:52,212 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:42:52,212 INFO L185 Difference]: Start difference. First operand has 62 places, 206 transitions, 607 flow. Second operand 3 states and 777 transitions. [2021-03-11 22:42:52,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 203 transitions, 622 flow [2021-03-11 22:42:52,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 203 transitions, 621 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 22:42:52,216 INFO L241 Difference]: Finished difference. Result has 63 places, 203 transitions, 599 flow [2021-03-11 22:42:52,216 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=597, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=599, PETRI_PLACES=63, PETRI_TRANSITIONS=203} [2021-03-11 22:42:52,216 INFO L335 CegarLoopForPetriNet]: 86 programPoint places, -23 predicate places. [2021-03-11 22:42:52,216 INFO L480 AbstractCegarLoop]: Abstraction has has 63 places, 203 transitions, 599 flow [2021-03-11 22:42:52,217 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:42:52,217 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:42:52,217 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:42:52,217 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 22:42:52,217 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-11 22:42:52,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:42:52,218 INFO L82 PathProgramCache]: Analyzing trace with hash 145334185, now seen corresponding path program 1 times [2021-03-11 22:42:52,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:42:52,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001933315] [2021-03-11 22:42:52,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:42:52,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:42:52,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:42:52,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:42:52,237 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:42:52,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 22:42:52,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:42:52,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:42:52,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:42:52,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001933315] [2021-03-11 22:42:52,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:42:52,241 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 22:42:52,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813239272] [2021-03-11 22:42:52,241 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 22:42:52,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:42:52,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 22:42:52,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 22:42:52,242 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 269 [2021-03-11 22:42:52,243 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 203 transitions, 599 flow. Second operand has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:42:52,243 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:42:52,243 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 269 [2021-03-11 22:42:52,243 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:42:53,009 INFO L129 PetriNetUnfolder]: 18413/22925 cut-off events. [2021-03-11 22:42:53,009 INFO L130 PetriNetUnfolder]: For 3391/3391 co-relation queries the response was YES. [2021-03-11 22:42:53,042 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23820 conditions, 22925 events. 18413/22925 cut-off events. For 3391/3391 co-relation queries the response was YES. Maximal size of possible extension queue 988. Compared 116085 event pairs, 0 based on Foata normal form. 2518/25443 useless extension candidates. Maximal degree in co-relation 23808. Up to 5544 conditions per place. [2021-03-11 22:42:53,095 INFO L132 encePairwiseOnDemand]: 260/269 looper letters, 6 selfloop transitions, 1 changer transitions 0/195 dead transitions. [2021-03-11 22:42:53,095 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 195 transitions, 589 flow [2021-03-11 22:42:53,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 22:42:53,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 22:42:53,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 777 transitions. [2021-03-11 22:42:53,097 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9628252788104089 [2021-03-11 22:42:53,097 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 777 transitions. [2021-03-11 22:42:53,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 777 transitions. [2021-03-11 22:42:53,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:42:53,097 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 777 transitions. [2021-03-11 22:42:53,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 259.0) internal successors, (777), 3 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:42:53,100 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:42:53,100 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:42:53,100 INFO L185 Difference]: Start difference. First operand has 63 places, 203 transitions, 599 flow. Second operand 3 states and 777 transitions. [2021-03-11 22:42:53,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 195 transitions, 589 flow [2021-03-11 22:42:53,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 195 transitions, 588 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 22:42:53,103 INFO L241 Difference]: Finished difference. Result has 64 places, 195 transitions, 576 flow [2021-03-11 22:42:53,104 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=574, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=576, PETRI_PLACES=64, PETRI_TRANSITIONS=195} [2021-03-11 22:42:53,104 INFO L335 CegarLoopForPetriNet]: 86 programPoint places, -22 predicate places. [2021-03-11 22:42:53,104 INFO L480 AbstractCegarLoop]: Abstraction has has 64 places, 195 transitions, 576 flow [2021-03-11 22:42:53,104 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:42:53,104 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:42:53,105 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:42:53,105 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-11 22:42:53,105 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-11 22:42:53,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:42:53,105 INFO L82 PathProgramCache]: Analyzing trace with hash -2096925875, now seen corresponding path program 1 times [2021-03-11 22:42:53,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:42:53,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191165425] [2021-03-11 22:42:53,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:42:53,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:42:53,118 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:42:53,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:42:53,119 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:42:53,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 22:42:53,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:42:53,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:42:53,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:42:53,122 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191165425] [2021-03-11 22:42:53,122 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:42:53,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 22:42:53,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379486901] [2021-03-11 22:42:53,122 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 22:42:53,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:42:53,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 22:42:53,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 22:42:53,123 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 269 [2021-03-11 22:42:53,124 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 195 transitions, 576 flow. Second operand has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:42:53,124 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:42:53,124 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 269 [2021-03-11 22:42:53,124 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:42:53,852 INFO L129 PetriNetUnfolder]: 18349/22852 cut-off events. [2021-03-11 22:42:53,852 INFO L130 PetriNetUnfolder]: For 1806/1806 co-relation queries the response was YES. [2021-03-11 22:42:53,886 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24672 conditions, 22852 events. 18349/22852 cut-off events. For 1806/1806 co-relation queries the response was YES. Maximal size of possible extension queue 988. Compared 114949 event pairs, 0 based on Foata normal form. 9/22861 useless extension candidates. Maximal degree in co-relation 24659. Up to 5544 conditions per place. [2021-03-11 22:42:53,937 INFO L132 encePairwiseOnDemand]: 266/269 looper letters, 12 selfloop transitions, 1 changer transitions 0/193 dead transitions. [2021-03-11 22:42:53,937 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 193 transitions, 596 flow [2021-03-11 22:42:53,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 22:42:53,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 22:42:53,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 777 transitions. [2021-03-11 22:42:53,938 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9628252788104089 [2021-03-11 22:42:53,939 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 777 transitions. [2021-03-11 22:42:53,939 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 777 transitions. [2021-03-11 22:42:53,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:42:53,939 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 777 transitions. [2021-03-11 22:42:53,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 259.0) internal successors, (777), 3 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:42:53,941 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:42:53,942 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:42:53,942 INFO L185 Difference]: Start difference. First operand has 64 places, 195 transitions, 576 flow. Second operand 3 states and 777 transitions. [2021-03-11 22:42:53,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 193 transitions, 596 flow [2021-03-11 22:42:53,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 193 transitions, 595 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 22:42:53,945 INFO L241 Difference]: Finished difference. Result has 65 places, 193 transitions, 571 flow [2021-03-11 22:42:53,945 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=569, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=571, PETRI_PLACES=65, PETRI_TRANSITIONS=193} [2021-03-11 22:42:53,945 INFO L335 CegarLoopForPetriNet]: 86 programPoint places, -21 predicate places. [2021-03-11 22:42:53,945 INFO L480 AbstractCegarLoop]: Abstraction has has 65 places, 193 transitions, 571 flow [2021-03-11 22:42:53,946 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:42:53,946 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:42:53,946 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:42:53,946 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-11 22:42:53,946 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-11 22:42:53,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:42:53,946 INFO L82 PathProgramCache]: Analyzing trace with hash -362982841, now seen corresponding path program 1 times [2021-03-11 22:42:53,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:42:53,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100084706] [2021-03-11 22:42:53,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:42:53,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:42:53,958 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:42:53,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:42:53,959 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:42:53,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 22:42:53,966 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:42:53,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:42:53,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:42:53,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100084706] [2021-03-11 22:42:53,967 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:42:53,967 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 22:42:53,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653560330] [2021-03-11 22:42:53,967 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 22:42:53,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:42:53,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 22:42:53,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 22:42:53,968 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 269 [2021-03-11 22:42:53,968 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 193 transitions, 571 flow. Second operand has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:42:53,969 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:42:53,969 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 269 [2021-03-11 22:42:53,969 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:42:54,449 INFO L129 PetriNetUnfolder]: 13596/17307 cut-off events. [2021-03-11 22:42:54,450 INFO L130 PetriNetUnfolder]: For 1798/1798 co-relation queries the response was YES. [2021-03-11 22:42:54,489 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18666 conditions, 17307 events. 13596/17307 cut-off events. For 1798/1798 co-relation queries the response was YES. Maximal size of possible extension queue 814. Compared 87272 event pairs, 0 based on Foata normal form. 463/17770 useless extension candidates. Maximal degree in co-relation 18656. Up to 3960 conditions per place. [2021-03-11 22:42:54,534 INFO L132 encePairwiseOnDemand]: 262/269 looper letters, 8 selfloop transitions, 1 changer transitions 0/187 dead transitions. [2021-03-11 22:42:54,535 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 187 transitions, 571 flow [2021-03-11 22:42:54,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 22:42:54,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 22:42:54,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 777 transitions. [2021-03-11 22:42:54,536 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9628252788104089 [2021-03-11 22:42:54,536 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 777 transitions. [2021-03-11 22:42:54,536 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 777 transitions. [2021-03-11 22:42:54,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:42:54,537 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 777 transitions. [2021-03-11 22:42:54,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 259.0) internal successors, (777), 3 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:42:54,539 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:42:54,539 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:42:54,539 INFO L185 Difference]: Start difference. First operand has 65 places, 193 transitions, 571 flow. Second operand 3 states and 777 transitions. [2021-03-11 22:42:54,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 187 transitions, 571 flow [2021-03-11 22:42:54,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 187 transitions, 570 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 22:42:54,542 INFO L241 Difference]: Finished difference. Result has 66 places, 187 transitions, 554 flow [2021-03-11 22:42:54,542 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=552, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=554, PETRI_PLACES=66, PETRI_TRANSITIONS=187} [2021-03-11 22:42:54,542 INFO L335 CegarLoopForPetriNet]: 86 programPoint places, -20 predicate places. [2021-03-11 22:42:54,542 INFO L480 AbstractCegarLoop]: Abstraction has has 66 places, 187 transitions, 554 flow [2021-03-11 22:42:54,543 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:42:54,543 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:42:54,543 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:42:54,543 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-11 22:42:54,543 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-11 22:42:54,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:42:54,543 INFO L82 PathProgramCache]: Analyzing trace with hash 667977215, now seen corresponding path program 1 times [2021-03-11 22:42:54,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:42:54,544 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105538467] [2021-03-11 22:42:54,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:42:54,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:42:54,555 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:42:54,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:42:54,556 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:42:54,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 22:42:54,559 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:42:54,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:42:54,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:42:54,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105538467] [2021-03-11 22:42:54,560 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:42:54,560 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 22:42:54,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698387210] [2021-03-11 22:42:54,560 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 22:42:54,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:42:54,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 22:42:54,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 22:42:54,561 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 269 [2021-03-11 22:42:54,562 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 187 transitions, 554 flow. Second operand has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:42:54,562 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:42:54,562 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 269 [2021-03-11 22:42:54,562 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:42:54,716 INFO L129 PetriNetUnfolder]: 4157/5613 cut-off events. [2021-03-11 22:42:54,716 INFO L130 PetriNetUnfolder]: For 1336/1336 co-relation queries the response was YES. [2021-03-11 22:42:54,725 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5730 conditions, 5613 events. 4157/5613 cut-off events. For 1336/1336 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 26968 event pairs, 0 based on Foata normal form. 1244/6857 useless extension candidates. Maximal degree in co-relation 5720. Up to 1320 conditions per place. [2021-03-11 22:42:54,737 INFO L132 encePairwiseOnDemand]: 257/269 looper letters, 3 selfloop transitions, 1 changer transitions 0/176 dead transitions. [2021-03-11 22:42:54,737 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 176 transitions, 529 flow [2021-03-11 22:42:54,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 22:42:54,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 22:42:54,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 777 transitions. [2021-03-11 22:42:54,738 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9628252788104089 [2021-03-11 22:42:54,738 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 777 transitions. [2021-03-11 22:42:54,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 777 transitions. [2021-03-11 22:42:54,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:42:54,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 777 transitions. [2021-03-11 22:42:54,740 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 259.0) internal successors, (777), 3 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:42:54,741 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:42:54,741 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:42:54,741 INFO L185 Difference]: Start difference. First operand has 66 places, 187 transitions, 554 flow. Second operand 3 states and 777 transitions. [2021-03-11 22:42:54,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 176 transitions, 529 flow [2021-03-11 22:42:54,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 176 transitions, 528 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 22:42:54,743 INFO L241 Difference]: Finished difference. Result has 67 places, 176 transitions, 522 flow [2021-03-11 22:42:54,743 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=522, PETRI_PLACES=67, PETRI_TRANSITIONS=176} [2021-03-11 22:42:54,744 INFO L335 CegarLoopForPetriNet]: 86 programPoint places, -19 predicate places. [2021-03-11 22:42:54,744 INFO L480 AbstractCegarLoop]: Abstraction has has 67 places, 176 transitions, 522 flow [2021-03-11 22:42:54,744 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:42:54,744 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:42:54,744 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:42:54,744 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-11 22:42:54,744 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-11 22:42:54,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:42:54,745 INFO L82 PathProgramCache]: Analyzing trace with hash 1104883851, now seen corresponding path program 1 times [2021-03-11 22:42:54,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:42:54,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716266413] [2021-03-11 22:42:54,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:42:54,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:42:54,754 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:42:54,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:42:54,755 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:42:54,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 22:42:54,757 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:42:54,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:42:54,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:42:54,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716266413] [2021-03-11 22:42:54,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:42:54,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 22:42:54,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731647619] [2021-03-11 22:42:54,758 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 22:42:54,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:42:54,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 22:42:54,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 22:42:54,759 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 269 [2021-03-11 22:42:54,760 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 176 transitions, 522 flow. Second operand has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:42:54,760 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:42:54,760 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 269 [2021-03-11 22:42:54,760 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:42:54,810 INFO L129 PetriNetUnfolder]: 1042/1539 cut-off events. [2021-03-11 22:42:54,810 INFO L130 PetriNetUnfolder]: For 468/468 co-relation queries the response was YES. [2021-03-11 22:42:54,812 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1566 conditions, 1539 events. 1042/1539 cut-off events. For 468/468 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 7109 event pairs, 0 based on Foata normal form. 467/2006 useless extension candidates. Maximal degree in co-relation 1556. Up to 360 conditions per place. [2021-03-11 22:42:54,815 INFO L132 encePairwiseOnDemand]: 255/269 looper letters, 1 selfloop transitions, 1 changer transitions 0/150 dead transitions. [2021-03-11 22:42:54,815 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 150 transitions, 448 flow [2021-03-11 22:42:54,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 22:42:54,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 22:42:54,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 777 transitions. [2021-03-11 22:42:54,817 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9628252788104089 [2021-03-11 22:42:54,817 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 777 transitions. [2021-03-11 22:42:54,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 777 transitions. [2021-03-11 22:42:54,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:42:54,817 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 777 transitions. [2021-03-11 22:42:54,818 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 259.0) internal successors, (777), 3 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:42:54,819 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:42:54,819 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:42:54,819 INFO L185 Difference]: Start difference. First operand has 67 places, 176 transitions, 522 flow. Second operand 3 states and 777 transitions. [2021-03-11 22:42:54,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 150 transitions, 448 flow [2021-03-11 22:42:54,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 150 transitions, 447 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 22:42:54,821 INFO L241 Difference]: Finished difference. Result has 68 places, 150 transitions, 445 flow [2021-03-11 22:42:54,822 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=443, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=445, PETRI_PLACES=68, PETRI_TRANSITIONS=150} [2021-03-11 22:42:54,822 INFO L335 CegarLoopForPetriNet]: 86 programPoint places, -18 predicate places. [2021-03-11 22:42:54,822 INFO L480 AbstractCegarLoop]: Abstraction has has 68 places, 150 transitions, 445 flow [2021-03-11 22:42:54,822 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:42:54,822 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:42:54,822 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:42:54,822 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-11 22:42:54,822 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-11 22:42:54,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:42:54,823 INFO L82 PathProgramCache]: Analyzing trace with hash -1350757879, now seen corresponding path program 1 times [2021-03-11 22:42:54,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:42:54,823 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343966544] [2021-03-11 22:42:54,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:42:54,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:42:54,832 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:42:54,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:42:54,833 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:42:54,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 22:42:54,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:42:54,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:42:54,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:42:54,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343966544] [2021-03-11 22:42:54,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:42:54,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 22:42:54,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229171597] [2021-03-11 22:42:54,836 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 22:42:54,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:42:54,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 22:42:54,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 22:42:54,840 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 269 [2021-03-11 22:42:54,840 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 150 transitions, 445 flow. Second operand has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:42:54,840 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:42:54,840 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 269 [2021-03-11 22:42:54,840 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:42:54,863 INFO L129 PetriNetUnfolder]: 249/455 cut-off events. [2021-03-11 22:42:54,863 INFO L130 PetriNetUnfolder]: For 143/143 co-relation queries the response was YES. [2021-03-11 22:42:54,864 INFO L84 FinitePrefix]: Finished finitePrefix Result has 495 conditions, 455 events. 249/455 cut-off events. For 143/143 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1698 event pairs, 0 based on Foata normal form. 130/585 useless extension candidates. Maximal degree in co-relation 485. Up to 84 conditions per place. [2021-03-11 22:42:54,865 INFO L132 encePairwiseOnDemand]: 259/269 looper letters, 4 selfloop transitions, 1 changer transitions 0/141 dead transitions. [2021-03-11 22:42:54,865 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 141 transitions, 428 flow [2021-03-11 22:42:54,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 22:42:54,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 22:42:54,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 776 transitions. [2021-03-11 22:42:54,866 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9615861214374225 [2021-03-11 22:42:54,866 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 776 transitions. [2021-03-11 22:42:54,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 776 transitions. [2021-03-11 22:42:54,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:42:54,867 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 776 transitions. [2021-03-11 22:42:54,868 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 258.6666666666667) internal successors, (776), 3 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:42:54,868 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:42:54,869 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:42:54,869 INFO L185 Difference]: Start difference. First operand has 68 places, 150 transitions, 445 flow. Second operand 3 states and 776 transitions. [2021-03-11 22:42:54,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 141 transitions, 428 flow [2021-03-11 22:42:54,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 141 transitions, 427 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 22:42:54,871 INFO L241 Difference]: Finished difference. Result has 69 places, 141 transitions, 419 flow [2021-03-11 22:42:54,871 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=419, PETRI_PLACES=69, PETRI_TRANSITIONS=141} [2021-03-11 22:42:54,871 INFO L335 CegarLoopForPetriNet]: 86 programPoint places, -17 predicate places. [2021-03-11 22:42:54,871 INFO L480 AbstractCegarLoop]: Abstraction has has 69 places, 141 transitions, 419 flow [2021-03-11 22:42:54,871 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:42:54,871 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:42:54,871 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:42:54,871 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-11 22:42:54,872 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-11 22:42:54,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:42:54,872 INFO L82 PathProgramCache]: Analyzing trace with hash -590843599, now seen corresponding path program 1 times [2021-03-11 22:42:54,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:42:54,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634213599] [2021-03-11 22:42:54,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:42:54,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:42:54,883 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:42:54,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:42:54,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:42:54,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 22:42:54,906 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:42:54,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:42:54,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:42:54,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634213599] [2021-03-11 22:42:54,907 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:42:54,907 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 22:42:54,907 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061112440] [2021-03-11 22:42:54,907 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 22:42:54,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:42:54,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 22:42:54,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 22:42:54,908 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 269 [2021-03-11 22:42:54,908 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 141 transitions, 419 flow. Second operand has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:42:54,908 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:42:54,909 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 269 [2021-03-11 22:42:54,909 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:42:54,939 INFO L129 PetriNetUnfolder]: 30/102 cut-off events. [2021-03-11 22:42:54,939 INFO L130 PetriNetUnfolder]: For 42/42 co-relation queries the response was YES. [2021-03-11 22:42:54,940 INFO L84 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 102 events. 30/102 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 200 event pairs, 0 based on Foata normal form. 41/143 useless extension candidates. Maximal degree in co-relation 121. Up to 14 conditions per place. [2021-03-11 22:42:54,940 INFO L132 encePairwiseOnDemand]: 256/269 looper letters, 1 selfloop transitions, 1 changer transitions 0/79 dead transitions. [2021-03-11 22:42:54,940 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 79 transitions, 237 flow [2021-03-11 22:42:54,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 22:42:54,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 22:42:54,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 776 transitions. [2021-03-11 22:42:54,942 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9615861214374225 [2021-03-11 22:42:54,942 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 776 transitions. [2021-03-11 22:42:54,942 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 776 transitions. [2021-03-11 22:42:54,942 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:42:54,942 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 776 transitions. [2021-03-11 22:42:54,943 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 258.6666666666667) internal successors, (776), 3 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:42:54,944 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:42:54,944 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:42:54,944 INFO L185 Difference]: Start difference. First operand has 69 places, 141 transitions, 419 flow. Second operand 3 states and 776 transitions. [2021-03-11 22:42:54,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 79 transitions, 237 flow [2021-03-11 22:42:54,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 79 transitions, 236 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 22:42:54,945 INFO L241 Difference]: Finished difference. Result has 70 places, 79 transitions, 234 flow [2021-03-11 22:42:54,946 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=234, PETRI_PLACES=70, PETRI_TRANSITIONS=79} [2021-03-11 22:42:54,946 INFO L335 CegarLoopForPetriNet]: 86 programPoint places, -16 predicate places. [2021-03-11 22:42:54,946 INFO L480 AbstractCegarLoop]: Abstraction has has 70 places, 79 transitions, 234 flow [2021-03-11 22:42:54,946 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:42:54,946 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:42:54,946 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:42:54,946 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-11 22:42:54,947 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-11 22:42:54,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:42:54,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1579714719, now seen corresponding path program 1 times [2021-03-11 22:42:54,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:42:54,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95060590] [2021-03-11 22:42:54,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:42:54,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:42:54,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:42:54,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:42:54,977 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:42:54,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 22:42:54,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:42:54,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:42:54,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:42:54,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95060590] [2021-03-11 22:42:54,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:42:54,981 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 22:42:54,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904695154] [2021-03-11 22:42:54,981 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 22:42:54,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:42:54,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 22:42:54,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 22:42:54,982 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 269 [2021-03-11 22:42:54,983 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 79 transitions, 234 flow. Second operand has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:42:54,983 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:42:54,983 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 269 [2021-03-11 22:42:54,983 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:42:54,993 INFO L129 PetriNetUnfolder]: 1/45 cut-off events. [2021-03-11 22:42:54,993 INFO L130 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2021-03-11 22:42:54,994 INFO L84 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 45 events. 1/45 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 24 event pairs, 0 based on Foata normal form. 8/53 useless extension candidates. Maximal degree in co-relation 65. Up to 2 conditions per place. [2021-03-11 22:42:54,994 INFO L132 encePairwiseOnDemand]: 261/269 looper letters, 1 selfloop transitions, 1 changer transitions 0/45 dead transitions. [2021-03-11 22:42:54,994 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 45 transitions, 136 flow [2021-03-11 22:42:55,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 22:42:55,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 22:42:55,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 771 transitions. [2021-03-11 22:42:55,004 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9553903345724907 [2021-03-11 22:42:55,004 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 771 transitions. [2021-03-11 22:42:55,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 771 transitions. [2021-03-11 22:42:55,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:42:55,005 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 771 transitions. [2021-03-11 22:42:55,006 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 257.0) internal successors, (771), 3 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:42:55,006 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:42:55,007 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:42:55,007 INFO L185 Difference]: Start difference. First operand has 70 places, 79 transitions, 234 flow. Second operand 3 states and 771 transitions. [2021-03-11 22:42:55,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 45 transitions, 136 flow [2021-03-11 22:42:55,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 45 transitions, 135 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 22:42:55,007 INFO L241 Difference]: Finished difference. Result has 71 places, 45 transitions, 133 flow [2021-03-11 22:42:55,008 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=133, PETRI_PLACES=71, PETRI_TRANSITIONS=45} [2021-03-11 22:42:55,008 INFO L335 CegarLoopForPetriNet]: 86 programPoint places, -15 predicate places. [2021-03-11 22:42:55,008 INFO L480 AbstractCegarLoop]: Abstraction has has 71 places, 45 transitions, 133 flow [2021-03-11 22:42:55,008 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:42:55,008 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:42:55,008 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:42:55,008 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-11 22:42:55,008 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-11 22:42:55,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:42:55,024 INFO L82 PathProgramCache]: Analyzing trace with hash 1840990945, now seen corresponding path program 1 times [2021-03-11 22:42:55,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:42:55,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826945610] [2021-03-11 22:42:55,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:42:55,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:42:55,125 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:42:55,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:42:55,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:42:55,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:42:55,135 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:42:55,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 22:42:55,147 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 22:42:55,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 22:42:55,178 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 22:42:55,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 22:42:55,210 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 22:42:55,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 22:42:55,252 INFO L142 QuantifierPusher]: treesize reduction 27, result has 64.5 percent of original size [2021-03-11 22:42:55,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:42:55,299 INFO L142 QuantifierPusher]: treesize reduction 36, result has 61.3 percent of original size [2021-03-11 22:42:55,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-03-11 22:42:55,368 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-03-11 22:42:55,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-11 22:42:55,409 INFO L142 QuantifierPusher]: treesize reduction 63, result has 52.3 percent of original size [2021-03-11 22:42:55,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-03-11 22:42:55,457 INFO L142 QuantifierPusher]: treesize reduction 72, result has 51.7 percent of original size [2021-03-11 22:42:55,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-03-11 22:42:55,512 INFO L142 QuantifierPusher]: treesize reduction 81, result has 51.2 percent of original size [2021-03-11 22:42:55,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-03-11 22:42:55,605 INFO L142 QuantifierPusher]: treesize reduction 90, result has 50.8 percent of original size [2021-03-11 22:42:55,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 93 [2021-03-11 22:42:55,682 INFO L142 QuantifierPusher]: treesize reduction 108, result has 48.8 percent of original size [2021-03-11 22:42:55,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-03-11 22:42:55,765 INFO L142 QuantifierPusher]: treesize reduction 117, result has 47.3 percent of original size [2021-03-11 22:42:55,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-03-11 22:42:55,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:42:55,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826945610] [2021-03-11 22:42:55,831 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:42:55,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 22:42:55,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720971309] [2021-03-11 22:42:55,832 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 22:42:55,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:42:55,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 22:42:55,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2021-03-11 22:42:55,834 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 269 [2021-03-11 22:42:55,836 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 45 transitions, 133 flow. Second operand has 16 states, 16 states have (on average 239.9375) internal successors, (3839), 16 states have internal predecessors, (3839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:42:55,836 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:42:55,836 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 269 [2021-03-11 22:42:55,836 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:43:04,415 INFO L129 PetriNetUnfolder]: 135695/164069 cut-off events. [2021-03-11 22:43:04,415 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 22:43:05,964 INFO L84 FinitePrefix]: Finished finitePrefix Result has 323856 conditions, 164069 events. 135695/164069 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8255. Compared 848898 event pairs, 45057 based on Foata normal form. 1/162339 useless extension candidates. Maximal degree in co-relation 323846. Up to 57345 conditions per place. [2021-03-11 22:43:06,633 INFO L132 encePairwiseOnDemand]: 254/269 looper letters, 104 selfloop transitions, 14 changer transitions 0/148 dead transitions. [2021-03-11 22:43:06,634 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 148 transitions, 575 flow [2021-03-11 22:43:06,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-03-11 22:43:06,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-03-11 22:43:06,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3943 transitions. [2021-03-11 22:43:06,639 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9161245353159851 [2021-03-11 22:43:06,639 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3943 transitions. [2021-03-11 22:43:06,639 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3943 transitions. [2021-03-11 22:43:06,640 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:43:06,640 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3943 transitions. [2021-03-11 22:43:06,645 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 246.4375) internal successors, (3943), 16 states have internal predecessors, (3943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:43:06,648 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 269.0) internal successors, (4573), 17 states have internal predecessors, (4573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:43:06,649 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 269.0) internal successors, (4573), 17 states have internal predecessors, (4573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:43:06,649 INFO L185 Difference]: Start difference. First operand has 71 places, 45 transitions, 133 flow. Second operand 16 states and 3943 transitions. [2021-03-11 22:43:06,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 148 transitions, 575 flow [2021-03-11 22:43:06,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 148 transitions, 574 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 22:43:06,655 INFO L241 Difference]: Finished difference. Result has 99 places, 58 transitions, 241 flow [2021-03-11 22:43:06,655 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=241, PETRI_PLACES=99, PETRI_TRANSITIONS=58} [2021-03-11 22:43:06,655 INFO L335 CegarLoopForPetriNet]: 86 programPoint places, 13 predicate places. [2021-03-11 22:43:06,655 INFO L480 AbstractCegarLoop]: Abstraction has has 99 places, 58 transitions, 241 flow [2021-03-11 22:43:06,656 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 239.9375) internal successors, (3839), 16 states have internal predecessors, (3839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:43:06,656 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:43:06,656 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:43:06,656 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-03-11 22:43:06,656 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-11 22:43:06,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:43:06,657 INFO L82 PathProgramCache]: Analyzing trace with hash 1946437383, now seen corresponding path program 2 times [2021-03-11 22:43:06,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:43:06,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582971506] [2021-03-11 22:43:06,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:43:06,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:43:06,713 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:43:06,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:43:06,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:43:06,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:43:06,722 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:43:06,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 22:43:06,730 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:43:06,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:43:06,743 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:43:06,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:43:06,758 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 22:43:06,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 22:43:06,780 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:43:06,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:43:06,807 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-03-11 22:43:06,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-03-11 22:43:06,838 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-03-11 22:43:06,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-11 22:43:06,879 INFO L142 QuantifierPusher]: treesize reduction 63, result has 52.3 percent of original size [2021-03-11 22:43:06,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-03-11 22:43:06,929 INFO L142 QuantifierPusher]: treesize reduction 72, result has 51.7 percent of original size [2021-03-11 22:43:06,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-03-11 22:43:06,989 INFO L142 QuantifierPusher]: treesize reduction 81, result has 51.2 percent of original size [2021-03-11 22:43:06,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-03-11 22:43:07,050 INFO L142 QuantifierPusher]: treesize reduction 90, result has 50.8 percent of original size [2021-03-11 22:43:07,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 93 [2021-03-11 22:43:07,119 INFO L142 QuantifierPusher]: treesize reduction 99, result has 50.5 percent of original size [2021-03-11 22:43:07,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-03-11 22:43:07,206 INFO L142 QuantifierPusher]: treesize reduction 117, result has 47.3 percent of original size [2021-03-11 22:43:07,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-03-11 22:43:07,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:43:07,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582971506] [2021-03-11 22:43:07,278 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:43:07,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 22:43:07,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382251151] [2021-03-11 22:43:07,279 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 22:43:07,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:43:07,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 22:43:07,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2021-03-11 22:43:07,282 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 269 [2021-03-11 22:43:07,284 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 58 transitions, 241 flow. Second operand has 16 states, 16 states have (on average 239.9375) internal successors, (3839), 16 states have internal predecessors, (3839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:43:07,284 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:43:07,284 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 269 [2021-03-11 22:43:07,284 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:43:31,832 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2021-03-11 22:43:33,008 INFO L129 PetriNetUnfolder]: 190870/258422 cut-off events. [2021-03-11 22:43:33,008 INFO L130 PetriNetUnfolder]: For 264262/291710 co-relation queries the response was YES. [2021-03-11 22:43:35,253 INFO L84 FinitePrefix]: Finished finitePrefix Result has 713273 conditions, 258422 events. 190870/258422 cut-off events. For 264262/291710 co-relation queries the response was YES. Maximal size of possible extension queue 11446. Compared 1874160 event pairs, 61443 based on Foata normal form. 1/256724 useless extension candidates. Maximal degree in co-relation 713249. Up to 80013 conditions per place. [2021-03-11 22:43:36,345 INFO L132 encePairwiseOnDemand]: 254/269 looper letters, 146 selfloop transitions, 20 changer transitions 0/196 dead transitions. [2021-03-11 22:43:36,345 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 196 transitions, 1208 flow [2021-03-11 22:43:36,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-03-11 22:43:36,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-03-11 22:43:36,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3943 transitions. [2021-03-11 22:43:36,349 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9161245353159851 [2021-03-11 22:43:36,349 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3943 transitions. [2021-03-11 22:43:36,350 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3943 transitions. [2021-03-11 22:43:36,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:43:36,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3943 transitions. [2021-03-11 22:43:36,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 246.4375) internal successors, (3943), 16 states have internal predecessors, (3943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:43:36,358 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 269.0) internal successors, (4573), 17 states have internal predecessors, (4573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:43:36,358 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 269.0) internal successors, (4573), 17 states have internal predecessors, (4573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:43:36,358 INFO L185 Difference]: Start difference. First operand has 99 places, 58 transitions, 241 flow. Second operand 16 states and 3943 transitions. [2021-03-11 22:43:36,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 196 transitions, 1208 flow [2021-03-11 22:43:36,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 196 transitions, 1194 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 22:43:36,493 INFO L241 Difference]: Finished difference. Result has 127 places, 76 transitions, 438 flow [2021-03-11 22:43:36,493 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=438, PETRI_PLACES=127, PETRI_TRANSITIONS=76} [2021-03-11 22:43:36,494 INFO L335 CegarLoopForPetriNet]: 86 programPoint places, 41 predicate places. [2021-03-11 22:43:36,494 INFO L480 AbstractCegarLoop]: Abstraction has has 127 places, 76 transitions, 438 flow [2021-03-11 22:43:36,494 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 239.9375) internal successors, (3839), 16 states have internal predecessors, (3839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:43:36,494 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:43:36,494 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:43:36,494 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-03-11 22:43:36,495 INFO L428 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-11 22:43:36,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:43:36,495 INFO L82 PathProgramCache]: Analyzing trace with hash 1021586865, now seen corresponding path program 3 times [2021-03-11 22:43:36,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:43:36,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297628760] [2021-03-11 22:43:36,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:43:36,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:43:36,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:43:36,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:43:36,554 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:43:36,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:43:36,557 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:43:36,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 22:43:36,563 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:43:36,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:43:36,573 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:43:36,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:43:36,585 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 22:43:36,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 22:43:36,601 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:43:36,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:43:36,628 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-03-11 22:43:36,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-03-11 22:43:36,655 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-03-11 22:43:36,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-11 22:43:36,689 INFO L142 QuantifierPusher]: treesize reduction 63, result has 52.3 percent of original size [2021-03-11 22:43:36,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-03-11 22:43:36,732 INFO L142 QuantifierPusher]: treesize reduction 72, result has 51.7 percent of original size [2021-03-11 22:43:36,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-03-11 22:43:36,780 INFO L142 QuantifierPusher]: treesize reduction 81, result has 51.2 percent of original size [2021-03-11 22:43:36,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-03-11 22:43:36,835 INFO L142 QuantifierPusher]: treesize reduction 99, result has 49.0 percent of original size [2021-03-11 22:43:36,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-03-11 22:43:36,915 INFO L142 QuantifierPusher]: treesize reduction 108, result has 48.8 percent of original size [2021-03-11 22:43:36,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-03-11 22:43:36,993 INFO L142 QuantifierPusher]: treesize reduction 117, result has 47.3 percent of original size [2021-03-11 22:43:36,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-03-11 22:43:37,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:43:37,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297628760] [2021-03-11 22:43:37,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:43:37,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 22:43:37,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923808168] [2021-03-11 22:43:37,059 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 22:43:37,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:43:37,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 22:43:37,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2021-03-11 22:43:37,061 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 269 [2021-03-11 22:43:37,063 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 76 transitions, 438 flow. Second operand has 16 states, 16 states have (on average 239.9375) internal successors, (3839), 16 states have internal predecessors, (3839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:43:37,063 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:43:37,063 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 269 [2021-03-11 22:43:37,063 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand